List of longest streams of Oregon

Rogue River (seventh longest) near Indian Mary Park in Josephine County

Seventy-seven rivers and creeks of at least 50 miles (80 km) in total length are the longest streams of the U.S. state of Oregon. All of these streams originate in the United States except the longest, the Columbia, which begins in the Canadian province of British Columbia and flows 1,249 miles (2,010 km) to the sea near Astoria. The second-longest, the Snake River, which at 1,078 miles (1,735 km) is the only other stream of more than 1,000 miles (1,600 km) on the list, begins in Wyoming and flows through parts of Idaho and Washington, as well as Oregon. Some of the other streams also cross borders between Oregon and California, Nevada, Idaho, or Washington, but the majority flow entirely within Oregon.

The Atlas of Oregon ranks 31 rivers in the state by average streamflow; the top five are the Columbia, Snake, Willamette, Santiam, and Umpqua.^[1] Not all Oregon rivers with high average flows are on this list of longest streams because neither their main stems nor any of their tributaries (including what are called "forks") are at least 50 miles (80 km) long. High-flow streams mentioned in the Atlas but not included in this long-stream list are the Metolius, Hood, Youngs, and Coos rivers. On the other hand, the list includes four low-flow intermittent streams—Dry River, Rattlesnake Creek, Rock Creek, and Dry Creek—that cross parts of the Oregon High Desert.

The direction of Oregon stream flow is influenced by four major drainage divides: the Oregon Coast Range on the west, the Cascade Range further inland, the Klamath–Siskiyou Mountains in the southwest, and the Blue Mountains in the northeast. One set of streams, including the Nehalem River, flows directly into the Pacific Ocean or into larger streams flowing directly to the Pacific; other streams, such as the Deschutes River, flow into the Columbia River or its tributaries. A third set, including the Klamath River and its tributaries, originates in Oregon, but its waters eventually flow into northern California before reaching the ocean. Other streams like the Donner und Blitzen River flow into closed basins, such as Malheur Lake, that have no outlet to the sea.^[1]

Source data for the table below came from topographic maps created by the United States Geological Survey and published on-line by TopoQuest,^[2] and from the Atlas of Oregon;^[1] the Oregon Atlas and Gazetteer;^[3] two federally produced geographic information system (GIS) datasets—the National Hydrography Dataset and the National Watershed Boundary Dataset—and other sources as noted. In the table, total lengths are given in miles (mi) and kilometers (km), and elevations are in feet (ft) and meters (m).

Rivers and creeks

Sandy River, 63rd longest  McKenzie River, 26th longest  Columbia River, longest  North Umpqua River, 18th longest  Snake River, 2nd longest  Nestucca River, 67th longest

Key
Stream is not entirely within the state

Longest streams of Oregon

Name	Mouth[4]	Total length	Watershed area	Mouth coordinates[5]	Mouth elevation[5]	Source coordinates[5]	Source elevation[6]	Source and mouth locations[4]
Columbia River	Pacific Ocean	1,249 mi 2,010 km[7][n 1]	258,000 mi^2 668,000 km^2[7]	46°14′39″N 124°03′29″W / 46.24417°N 124.05806°W[9]	0 ft 0 m	50°13′00″N 115°51′00″W / 50.21667°N 115.85000°W[10]	2,657 ft 810 m	Source at Columbia Lake, British Columbia, mouth near Astoria
Snake River	Columbia River	1,078 mi 1,674 km[11][n 2]	108,000 mi^2 280,000 km^2[7]	46°11′10″N 119°01′43″W / 46.18611°N 119.02861°W	358 ft 109 m	44°07′49″N 110°13′10″W / 44.13028°N 110.21944°W[12]	9,199 ft 2,804 m	Source in Absaroka Range, Wyoming, mouth near Tri-Cities, Washington
Owyhee River	Snake River	346 mi 557 km[11][n 3]	11,049 mi^2 28,617 km^2[14]	43°48′46″N 117°01′32″W / 43.81278°N 117.02556°W	3,185 ft 666 ft	41°30′17″N 115°44′30″W / 41.50472°N 115.74167°W[15]	6,918 ft 2,109 m	Source in Independence Mountains of Nevada, mouth near Nyssa
Klamath River	Pacific Ocean	287 mi 462 km[16][n 4]	15,700 mi^2 40,700 km^2[16]	41°32′49″N 124°05′00″W / 41.54694°N 124.08333°W	0 ft 0 m	42°11′29″N 121°46′58″W / 42.19139°N 121.78278°W[17]	4,090 ft 1,247 m	Source at Upper Klamath Lake, mouth near Crescent City, California
John Day River	Columbia River	284 mi 457 km[18]	8,100 mi^2 21,000 km^2[19]	45°43′57″N 120°38′57″W / 45.73250°N 120.64917°W	269 ft 82 m	44°14′44″N 118°33′08″W / 44.24556°N 118.55222°W[20]	6,676 ft 2,035 m	Source in Strawberry Range, mouth near Rufus
Deschutes River	Columbia River	251 mi 405 km[21]	10,400 mi^2 26,939 km^2[21]	45°38′07″N 120°54′52″W / 45.63528°N 120.91444°W	164 ft 50 m	43°54′33″N 121°45′40″W / 43.90917°N 121.76111°W[22]	4,747 ft 1,447 m	Source in Cascade Range, mouth near Biggs Junction
Rogue River	Pacific Ocean	215 mi 346 km[23]	5,200 mi^2 13,400 km^2[24]	42°25′21″N 124°25′45″W / 42.42250°N 124.42917°W	0 ft 0 m	43°03′57″N 122°13′56″W / 43.06583°N 122.23222°W[25]	5,320 ft 1,622 m	Source in Cascade Range, mouth near Gold Beach
Malheur River	Snake River	190 mi 306 km[26]	5,000 mi^2 11,940 km^2[26]	44°03′33″N 116°58′31″W / 44.05917°N 116.97528°W	2,133 ft 650 m	44°08′05″N 118°37′14″W / 44.13472°N 118.62056°W[27]	4,958 ft 1,511 m	Source in Strawberry Range, mouth near Ontario
Willamette River	Columbia River	187 mi 301 km[28]	11,400 mi^2 30,000 km^2[7]	45°39′10″N 122°45′53″W / 45.65278°N 122.76472°W	10 ft 3 m	44°01′23″N 123°01′25″W / 44.02306°N 123.02361°W[29]	438 ft 134 m	Source near Eugene, mouth near Portland
Grande Ronde River	Snake River	182 mi 339 km[11][n 5]	4,000 mi^2 10,240 km^2[31]	46°04′49″N 116°58′47″W / 46.08028°N 116.97972°W	820 ft 250 m	44°57′34″N 118°15′38″W / 44.95944°N 118.26056°W[32]	7,446 ft 2,270 m	Source in Blue Mountains, mouth on Washington–Idaho border
Powder River	Snake River	153 mi 246 km[11]	1,720 mi^2 4,455 km^2[33]	44°44′37″N 117°02′56″W / 44.74361°N 117.04889°W	2,064 ft 629 m	44°44′30″N 118°12′22″W / 44.74167°N 118.20611°W[34]	4,402 ft 1,342 m	Source in Blue Mountains, mouth near Richland
Crooked River	Deschutes River	125 mi 201 km[35]	4,300 mi^2 11,137 km^2[21]	44°34′25″N 121°16′19″W / 44.57361°N 121.27194°W	1,949 ft 594 m	44°06′05″N 120°03′04″W / 44.10139°N 120.05111°W[36]	3,624 ft 1,105 m	Source near Ochoco Mountains, mouth near Culver
Middle Fork Willamette River	Willamette River	122 mi 196 km[7][37]	1,355 mi^2 3,510 km^2[28]	44°01′23″N 123°01′25″W / 44.02306°N 123.02361°W	436 ft 133 m	43°24′28″N 122°06′20″W / 43.40778°N 122.10556°W[38]	5,552 ft 1,692 m	Source in Calapooya Mountains, mouth near Springfield
Nehalem River	Pacific Ocean	119 mi 192 km[39]	855 mi^2 2,214 km^2[39]	45°39′29″N 123°56′04″W / 45.65806°N 123.93444°W	0 ft 0 m	45°43′53″N 123°25′26″W / 45.73139°N 123.42389°W[40]	2,420 ft 740 m	Source in Northern Oregon Coast Range, mouth near Wheeler
North Fork John Day River	John Day River	117 mi 188 km[18]	600 mi^2 1,554 km^2[18]	44°45′22″N 119°38′19″W / 44.75611°N 119.63861°W	1,834 ft 559 m	44°51′48″N 118°14′13″W / 44.86333°N 118.23694°W[41]	7,420 ft 2,260 m	Source in Elkhorn Mountains, mouth near Kimberly
Umpqua River	Pacific Ocean	112 mi 180 km[42]	4,685 mi^2 12,133 km^2[43]	43°40′09″N 124°12′18″W / 43.66917°N 124.20500°W	0 ft 0 m	43°16′05″N 123°26′46″W / 43.26806°N 123.44611°W[44]	362 ft 110 m	Source near Roseburg, mouth near Reedsport
Siuslaw River	Pacific Ocean	110 mi 180 km[45]	773 mi^2 2,000 km^2[46]	44°01′01″N 124°08′14″W / 44.01694°N 124.13722°W	0 ft 0 m	43°49′23″N 123°15′42″W / 43.82306°N 123.26167°W[47]	632 ft 193 m	Source in Central Oregon Coast Range, mouth at Florence
North Umpqua River	Umpqua River	110 mi 170 km[48]	1,373 mi^2 3,560 km^2[49]	43°16′05″N 123°26′45″W / 43.26806°N 123.44583°W	361 ft 110 m	43°15′24″N 122°00′03″W / 43.25667°N 122.00083°W[50]	5,985 ft 1,824 m	Source in Cascade Range, mouth near Roseburg
South Umpqua River	Umpqua River	110 mi 170 km[48]	1,800 mi^2  4,700 km^2[51]	43°16′04″N 123°26′46″W / 43.26778°N 123.44611°W	361 ft 110 m	43°06′26″N 122°35′22″W / 43.10722°N 122.58944°W[52]	2,009 ft 612 m	Source in Cascade Range, mouth near Roseburg
Jordan Creek	Owyhee River	99 mi 159 km[11] [n 6]	1,305 mi^2 3,380 km^2[53]	42°51′45″N 117°38′29″W / 42.86250°N 117.64139°W	3,363 ft 1,025 m	42°58′21″N 116°44′39″W / 42.97250°N 116.74417°W[54]	7,551 ft 2,302 m	Source in Owyhee Mountains of Idaho, mouth near Rome
Burnt River	Snake River	98 mi 158 km[11]	1,090 mi^2 2,823 km^2[33]	44°21′54″N 117°13′34″W / 44.36500°N 117.22611°W	2,073 ft 632 m	44°30′15″N 118°10′51″W / 44.50417°N 118.18083°W[55]	3,824 ft 1,166 m	Source in Blue Mountains, mouth near Huntington
Silvies River	Malheur Lake	95 mi 153 km[56]	1,273 mi^2 3,300 km^2[57]	43°34′05″N 119°02′04″W / 43.56806°N 119.03444°W	4,150 ft 1,265 m	44°07′19″N 119°13′53″W / 44.12194°N 119.23139°W[58]	5,649 ft 1,722 m	Source in Blue Mountains, mouth near Burns
North Santiam River	Santiam River	92 mi 148 km[59]	766 mi^2 1,984 km^2[59]	44°41′12″N 123°00′24″W / 44.68667°N 123.00667°W	217 ft 66 m	44°28′39″N 121°53′04″W / 44.47750°N 121.88444°W[60]	5,133 ft 1,565 m	Source in Cascade Range, mouth in Willamette Valley
Little Deschutes River	Deschutes River	92 mi 146 km[61]	1,020 mi^2 2,642 km^2[21]	43°51′14″N 121°27′14″W / 43.85389°N 121.45389°W	4,163 ft 1,269 m	43°18′25″N 121°59′43″W / 43.30694°N 121.99528°W[62]	6,219 ft 1,896 m	Source in Cascade Range, mouth near Sunriver
Smith River	Umpqua River	90 mi 140 km[63]	218 mi^2 565 km^2[64]	43°44′13″N 124°04′43″W / 43.73694°N 124.07861°W	0 mi 0 km	43°44′25″N 123°20′22″W / 43.74028°N 123.33944°W[65]	1,406 ft 429 m	Source in Central Oregon Coast Range, mouth near Reedsport
McKenzie River	Willamette River	90 mi 145 km[28]	1,300 mi^2 3,367 km^2[66]	44°07′32″N 123°06′20″W / 44.12556°N 123.10556°W	371 ft 113 m	44°21′37″N 121°59′39″W / 44.36028°N 121.99417°W[67]	3,570 ft 1,088 m	Source in Cascade Range, mouth near Eugene
Umatilla River	Columbia River	89 mi 143 km[68]	2,540 mi^2 6,579 km^2[68]	45°55′09″N 119°21′20″W / 45.91917°N 119.35556°W	269 ft 82 m	45°43′32″N 118°11′17″W / 45.72556°N 118.18806°W[69]	2,332 ft 711 m	Source in Blue Mountains, mouth at Umatilla
Dry River (intermittent)	Crooked River	88 mi 142 km[11]	752 mi^2 1,948 km^2[70]	44°20′10″N 121°02′50″W / 44.33611°N 121.04722°W	2,782 ft 848 m	43°46′56″N 120°16′44″W / 43.78222°N 120.27889°W[71]	5,886 ft 1,794 m	Source in Hampton Buttes near Brothers, mouth upstream of Smith Rock
Silver Creek	Harney Lake	87 mi 140 km[11]	1,700 mi^2 4,403 km^2[72]	43°15′47″N 119°11′21″W / 43.26306°N 119.18917°W	4,101 ft 1,250 m	43°56′28″N 119°33′25″W / 43.94111°N 119.55694°W[73]	5,830 ft 1,777 m	Source in Malheur National Forest, mouth at Harney Lake
Sprague River	Williamson River	84 mi 135 km[74]	1,560 mi^2 4,050 km^2[74]	42°34′16″N 121°52′28″W / 42.57111°N 121.87444°W	4,163 ft 1,269 m	42°26′16″N 121°06′34″W / 42.43778°N 121.10944°W[75]	4,326 ft 1,319 m	Source on high plateau of eastern Klamath County, mouth near Chiloquin
Clackamas River	Willamette River	83 mi 134 km[76]	940 mi^2 2,435 km^2[28]	45°22′21″N 122°36′31″W / 45.37250°N 122.60861°W	10 ft 3 m	44°49′17″N 121°47′47″W / 44.82139°N 121.79639°W[77]	4,904 ft 1,496 m	Source in Cascade Range, mouth at Gladstone and Oregon City
Tualatin River	Willamette River	83 mi 134 km[78]	712 mi^2 1,844 km^2[78]	45°20′17″N 122°39′05″W / 45.33806°N 122.65139°W	59 ft 18 m	45°28′55″N 123°24′21″W / 45.48194°N 123.40583°W[79]	1,978 ft 603 m	Source in Northern Oregon Coast Range, mouth near West Linn
Rock Creek	John Day River	82 mi 132 km[11]	507 mi^2 1,313 km^2[70]	45°34′36″N 120°24′17″W / 45.57667°N 120.40472°W	404 ft 123 m	45°02′00″N 119°34′35″W / 45.03333°N 119.57639°W[80]	4,351 ft 1,326 m	Source in Umatilla National Forest, mouth east of Wasco
Willow Creek	Columbia River	79 mi 127 km[81]	880 mi^2 2,279 km^2[81]	45°48′21″N 120°00′24″W / 45.80583°N 120.00667°W	269 ft 82 m	45°09′56″N 119°20′29″W / 45.16556°N 119.34139°W[82]	4,918 ft 1,499 m	Source in Umatilla National Forest, mouth upstream of Arlington
South Fork Crooked River	Crooked River	76 mi 123 km[11]	1,530 mi^2 4,000 km^2[83]	44°06′05″N 120°03′04″W / 44.10139°N 120.05111°W	3,622 ft 1,104 m	43°38′55″N 120°23′40″W / 43.64861°N 120.39444°W[84]	4,779 ft 1,457 m	Source southeast of Brothers, mouth near Ochoco Mountains
Middle Fork John Day River	North Fork John Day River	75 mi 121 km[18]	321 mi^2 833 km^2[18]	44°54′59″N 119°18′08″W / 44.91639°N 119.30222°W	2,198 ft 670 m	44°35′05″N 118°25′48″W / 44.58472°N 118.43000°W[85]	4,253 ft 1,296 m	Source in Blue Mountains, mouth near Monument
Cow Creek	South Umpqua River	75 mi 121 km[86]	456 mi^2 1,181 km^2[87]	42°56′49″N 123°20′16″W / 42.94694°N 123.33778°W	636 ft 194 m	42°48′09″N 122°59′30″W / 42.80250°N 122.99167°W[88]	2,404 ft 733 m	Source in Umpqua National Forest, mouth at Canyonville
Sycan River	Sprague River	75 mi 121 km[11]	559 mi^2 1,450 km^2[89]	42°27′40″N 121°17′13″W / 42.46111°N 121.28694°W	4,311 ft 1,314 m	42°38′50″N 120°44′08″W / 42.64722°N 120.73556°W[90]	7,075 ft 2,156 m	Source on high plateau of eastern Klamath County, mouth at Beatty
Imnaha River	Snake River	73 mi 117 km[11]	855 mi^2 2,214 km^2[91]	45°49′03″N 116°45′53″W / 45.81750°N 116.76472°W	945 ft 288 m	45°06′47″N 117°07′31″W / 45.11306°N 117.12528°W[92]	6,641 ft 2,024 m	Source in Wallowa Mountains, mouth on Idaho border
Calapooia River	Willamette River	72 mi 116 km[28]	365 mi^2 945 km^2[28]	44°38′20″N 123°06′36″W / 44.63889°N 123.11000°W	180 ft 55 m	44°15′54″N 122°19′25″W / 44.26500°N 122.32361°W[93]	4,552 ft 1,387 m	Source in Cascade Range, mouth at Albany
Williamson River	Klamath River	70 mi 110 km[94]	3,000 mi^2 7,800 km^2[95]	42°27′53″N 121°57′25″W / 42.46472°N 121.95694°W	4,147 ft 1,264 m	42°42′15″N 121°20′24″W / 42.70417°N 121.34000°W[96]	5,100 ft 1,600 m	Source on high plateau of eastern Klamath County, mouth at Upper Klamath Lake
Succor Creek	Snake River	67 mi 108 km[97][n 7]	494 mi^2 1,279 km^2[98]	43°37′55″N 116°56′47″W / 43.63194°N 116.94639°W	2,211 ft 674 m	43°05′45″N 116°50′18″W / 43.09583°N 116.83833°W[99]	6,976 ft 2,126 m	Source in Owyhee Mountains, mouth near Homedale, both in Idaho
Siletz River	Pacific Ocean	67 mi 108 km[100]	373 mi^2 970 km^2[101]	44°54′12″N 124°00′41″W / 44.90333°N 124.01139°W	0 ft 0 m	44°52′48″N 123°42′40″W / 44.88000°N 123.71111°W[102]	708 ft 216 m	Source in Central Oregon Coast Range, mouth near Lincoln City
South Santiam River	Santiam River	66 mi 106 km [103]	1,040 mi^2 2,694 km^2[104]	44°41′12″N 123°00′24″W / 44.68667°N 123.00667°W	217 ft 66 m	44°22′27″N 122°13′05″W / 44.37417°N 122.21806°W[105]	1,932 ft 589 m	Source in Cascade Range, mouth in Willamette Valley
South Fork Coquille River	Coquille River	63 mi 101 km[106]	288 mi^2 746 km^2[106]	43°04′49″N 124°08′29″W / 43.08028°N 124.14139°W	13 ft 4 m	42°50′24″N 123°52′30″W / 42.84000°N 123.87500°W[107]	3,472 ft 1,058 m	Source in Siskiyou National Forest, mouth near Myrtle Point
West Little Owyhee River	Owyhee River	63 mi 101 km[11]	310 mi^2 803 km^2[70]	42°27′10″N 117°12′34″W / 42.45278°N 117.20944°W	4,373 ft 1,333 m	42°06′30″N 117°35′03″W / 42.10833°N 117.58417°W[108]	6,508 ft 1,984 m	Source near McDermitt, mouth in Owyhee Desert
Pudding River	Molalla River	62 mi 100 km[109]	531 mi^2 1,375 km^2[110]	45°17′54″N 122°43′07″W / 45.29833°N 122.71861°W	62 ft 19 m	44°53′51″N 122°44′42″W / 44.89750°N 122.74500°W[111]	950 ft 290 m	Source in Waldo Hills, mouth near Canby
Luckiamute River	Willamette River	62 mi 100 km[112]	315 mi^2 816 km^2[113]	44°45′15″N 123°08′54″W / 44.75417°N 123.14833°W	164 ft 50 m	44°47′28″N 123°32′45″W / 44.79111°N 123.54583°W[114]	2,684 ft 818 m	Source in Central Oregon Coast Range, mouth near Buena Vista
Bully Creek	Malheur River	62 mi 99 km[11]	540 mi^2 1,560 km^2[115]	43°58′30″N 117°14′24″W / 43.97500°N 117.24000°W	2,244 ft 684 m	44°05′25″N 118°05′55″W / 44.09028°N 118.09861°W[116]	4,278 ft 1,304 m	Source in Malheur County, mouth near Vale
South Fork John Day River	John Day River	60 mi 97 km[18]	607 mi^2 1,570 km^2[117]	44°28′26″N 119°32′10″W / 44.47389°N 119.53611°W	2,329 ft 710 m	43°55′09″N 119°19′17″W / 43.91917°N 119.32139°W[118]	5,400 ft 1,600 m	Source in Ochoco Mountains, mouth near Dayville
Lost River	Tule Lake	60 mi 97 km[119][n 8]	2,998 mi^2 7,760 km^2[120]	41°56′24″N 121°30′19″W / 41.94000°N 121.50528°W	4,035 ft 1,230 m	41°55′34″N 121°04′33″W / 41.92611°N 121.07583°W[121]	4,479 ft 1,365 m	Source at Clear Lake Reservoir, mouth at Tule Lake, both in California
Donner und Blitzen River	Malheur Lake	60 mi 97 km[122]	791 mi^2 2,050 km^2[123]	43°17′30″N 118°49′12″W / 43.29167°N 118.82000°W	4,101 ft 1,250 m	42°32′02″N 118°43′52″W / 42.53389°N 118.73111°W[124]	6,526 ft 1989 m	Source near Steens Mountain, mouth at Malheur Lake
South Yamhill River	Yamhill River	60 mi 97 km[125]	492 mi^2 1,274 km^2[126]	45°13′33″N 123°08′41″W / 45.22583°N 123.14472°W	75 ft 23 m	45°06′38″N 123°43′40″W / 45.11056°N 123.72778°W[127]	551 ft 168 m	Source in Northern Oregon Coast Range, mouth near McMinnville
North Fork Malheur River	Malheur River	59 mi 95 km[128]	550 mi^2 1,424 km^2[129]	43°45′25″N 118°03′40″W / 43.75694°N 118.06111°W	2,923 ft 891 m	44°21′58″N 118°24′16″W / 44.36611°N 118.40444°W[130]	6,884 ft 2,098 m	Source in Strawberry Range, mouth near Juntura
Yaquina River	Pacific Ocean	59 mi 95 km[131]	253 mi^2 660 km^2[131]	44°36′44″N 124°01′04″W / 44.61222°N 124.01778°W	0 ft 0 m	44°44′57″N 123°36′06″W / 44.74917°N 123.60167°W[132]	2,137 ft 651 m	Source in Central Oregon Coast Range, mouth at Newport
Butter Creek	Umatilla River	57 mi 92 km[133]	465 mi^2 1,204 km^2[133]	45°47′41″N 119°19′44″W / 45.79472°N 119.32889°W	535 ft 163 m	45°12′24″N 119°10′25″W / 45.20667°N 119.17361°W[134]	5,034 ft 1,534 m	Source in Umatilla National Forest, mouth upstream of Hermiston
Rattlesnake Creek (intermittent)	Crooked Creek	57 mi 92 km[11]	298 mi^2 772 km^2[70]	42°43′24″N 117°47′42″W / 42.72333°N 117.79500°W	3,770 ft 1,149 m	42°16′55″N 117°40′10″W / 42.28194°N 117.66944°W[135]	6,439 ft 1,963 m	Source in desert north of McDermitt, mouth near Burns Junction
Willow Creek	Malheur River	57 mi 92 km[136]	787 mi^2 2,038 km^2[137]	43°59′14″N 117°13′51″W / 43.98722°N 117.23083°W	2,234 ft 681 m	44°20′08″N 117°56′15″W / 44.33556°N 117.93750°W[138]	3,724 ft 1,135 m	Source near Ironside, mouth near Vale
Chetco River	Pacific Ocean	56 mi 90 km[139]	352 mi^2 912 km^2[139]	42°02′43″N 124°16′14″W / 42.04528°N 124.27056°W	0 ft 0 m	42°07′47″N 123°52′39″W / 42.12972°N 123.87750°W[140]	3,201 ft 976 m	Source in Klamath Mountains, mouth near Brookings
Illinois River	Rogue River	56 mi 97 km[141]	983 mi^2 2,546 km^2[142]	42°33′00″N 124°03′58″W / 42.55000°N 124.06611°W	102 ft 31 m	42°09′35″N 123°39′33″W / 42.15972°N 123.65917°W[143]	1,275 ft 389 m	Source near Cave Junction (between Klamath Mountains and Siskiyou Mountains), mouth near Agness
Rock Creek (intermittent)	Catlow Valley	56 mi 90 km[11]	269 mi^2 697 km^2[70]	42°39′41″N 119°10′08″W / 42.66139°N 119.16889°W	4,557 ft 1,389 m	42°26′57″N 119°41′33″W / 42.44917°N 119.69250°W[144]	6,896 ft 2,102 m	Source on Hart Mountain, mouth in Catlow Valley
Wallowa River	Grande Ronde River	55 mi 89 km[145]	956 mi^2 2,480 km^2[146]	45°43′31″N 117°47′09″W / 45.72528°N 117.78583°W	2,316 ft 706 m	45°16′28″N 117°12′42″W / 45.27444°N 117.21167°W[147]	4,498 ft 1,371 m	Source in Wallowa Mountains, mouth downstream of Wallowa
Sandy River	Columbia River	55 mi 89 km[148]	508 mi^2 1,316 km^2[148]	45°34′05″N 122°24′03″W / 45.56806°N 122.40083°W	10 ft 3 m	45°22′32″N 121°43′45″W / 45.37556°N 121.72917°W[149]	5,225 ft 1,593 m	Source in Cascade Range, mouth near Troutdale
Long Tom River	Willamette River	55 mi 89 km[150]	410 mi^2 1,062 km^2[151]	44°22′48″N 123°14′54″W / 44.38000°N 123.24833°W	256 ft 78 m	44°13′12″N 123°26′39″W / 44.22000°N 123.44417°W[152]	1,400 ft 427 m	Source near Low Pass, mouth north of Monroe
Fifteenmile Creek	Columbia River	54 mi 87 km[11]	373 mi^2 966 km^2[153]	45°36′50″N 121°07′22″W / 45.61389°N 121.12278°W	95 ft 29 m	45°20′35″N 121°31′18″W / 45.34306°N 121.52167°W[154]	6,178 ft 1,883 m	Source in Mount Hood National Forest, mouth near The Dalles
Dry Creek (intermittent)	Crooked Creek	54 mi 86 km[11]	499 mi^2 1,184 km^2[70]	42°47′42″N 117°44′47″W / 42.79500°N 117.74639°W	3,570 ft 1,088 m	42°30′31″N 117°17′44″W / 42.50861°N 117.29556°W[155]	5,000 ft 1,524 m	Source near Five Points, mouth near Burns Junction
Nestucca River	Pacific Ocean	53 mi 85 km[156]	370 mi^2 960 km^2[157]	45°11′03″N 123°57′26″W / 45.18417°N 123.95722°W	0 ft 0 m	45°16′23″N 123°23′33″W / 45.27306°N 123.39250°W[158]	2,246 ft 685 m	Source in Northern Oregon Coast Range, mouth near Pacific City
Warm Springs River	Deschutes River	53 mi 85 km[11]	541 mi^2 1,401 km^2[70]	44°51′28″N 121°04′09″W / 44.85778°N 121.06917°W	1,240 ft 378 m	44°57′39″N 121°47′21″W / 44.96083°N 121.78917°W[159]	4,023 ft 1,226 m	Source in Cascade Range, mouth near Kahneeta
North Fork Coquille River	Coquille River	53 mi 85 km[106]	154 mi^2 399 km^2[106]	43°04′49″N 124°08′29″W / 43.08028°N 124.14139°W	13 ft 4 m	43°16′54″N 123°51′14″W / 43.28167°N 123.85389°W[160]	1,647 ft 502 m	Source in central Coast Range, mouth near Myrtle Point
Chewaucan River	Abert Lake	53 mi 86 km[11]	651 mi^2 1,686 km^2[70]	42°31′21″N 120°14′59″W / 42.52250°N 120.24972°W	4,258 ft 1,298 m	42°27′49″N 120°36′38″W / 42.46361°N 120.61056°W[161]	5,151 ft 1,570 m	Source in Fremont National Forest, mouth at Abert Lake
Applegate River	Rogue River	51 mi 82 km[162][n 9]	767 mi^2 1,990 km^2[163]	42°25′44″N 123°26′59″W / 42.42889°N 123.44972°W	850 ft 259 m	41°58′23″N 123°11′08″W / 41.97306°N 123.18556°W[164]	2,534 ft 772 m	Source in Siskiyou Mountains in California, mouth near Grants Pass
Trout Creek	Deschutes River	51 mi 82 km[11]	692 mi^2 1,792 km^2[165]	44°49′17″N 121°05′19″W / 44.82139°N 121.08861°W	1,283 ft 391 m	44°30′42″N 120°33′20″W / 44.51167°N 120.55556°W[166]	5,593 ft 1,705 m	Source in Ochoco Mountains, mouth at Jefferson–Wasco county line
Cow Creek	Jordan Creek	51 mi 82 km[11] [n 10]	330 mi^2 855 km^2[167]	42°56′51″N 117°20′38″W / 42.94750°N 117.34389°W	4,216 ft 1,285 m	43°04′23″N 116°50′23″W / 43.07306°N 116.83972°W[168]	7,048 ft 2,148 m	Source near De Lamar, Idaho, mouth at Danner
Crooked Creek	Owyhee River	51 mi 82 km[169]	1,340 mi^2 3,500 km^2[170]	42°52′57″N 117°41′52″W / 42.88250°N 117.69778°W	3,343 ft 1,019 m	42°40′32″N 117°54′33″W / 42.67556°N 117.90917°W[171]	3,921 ft 1,195 m	Source at Crooked Creek Spring, mouth near Rome
Minam River	Wallowa River	51 mi 82 km[11]	239 mi^2 618 km^2[172]	45°37′17″N 117°43′14″W / 45.62139°N 117.72056°W	2,536 ft 773 m	45°10′07″N 117°21′28″W / 45.16861°N 117.35778°W[173]	7,684 ft 2,342 m	Source in the Eagle Cap Wilderness, mouth at Minam
Molalla River	Willamette River	50 mi 80 km[174]	877 mi^2 2,270 km^2[28]	45°17′23″N 122°43′18″W / 45.28972°N 122.72167°W	69 ft 21 m	44°54′12″N 122°16′01″W / 44.90333°N 122.26694°W[175]	3,304 ft 1,007 m	Source in Cascade Range, mouth near Canby
Walla Walla River	Columbia River	50 mi 80 km[176][n 11]	1,758 mi^2 4,453 km^2[68]	46°03′27″N 118°54′40″W / 46.05750°N 118.91111°W	404 ft 123 m	45°53′54″N 118°18′28″W / 45.89833°N 118.30778°W[177]	1,360 ft 410 m	Source near Milton-Freewater, mouth near Wallula, Washington

The Willamette River (10th longest) runs through the center of Portland, Oregon.

Map

Image map of all Oregon streams more than 50 miles (80 kilometers) long. Each label is wikilinked to an article. Click on the small rectangles to the right of the caption for a larger map.

See also

• List of rivers of Oregon
• List of longest rivers in the United States by state

Notes and references

Notes

1. Only 309 miles (497 km) of the Columbia River flow through Oregon.^[8]
2. Only 233 miles (375 km) of the Snake River flow through Oregon.^[8]
3. Only 186 miles (299 km) of the Owyhee River flow through Oregon.^[13]
4. Only 79 miles (127 km) of the Klamath River flow through Oregon. Calculated by subtracting the river mileage (208) at the Oregon–California border from the total length (287).^[8]
5. Only about 144 miles (232 km) of the Grande Ronde River flow through Oregon. The river leaves Oregon and enters Washington at about river mile 39, reenters Oregon at river mile 38, and flows back into Washington at river mile 37. The distance within Oregon is the total length, 182 miles (293 km), minus the distance 38 miles (61 km) in Washington.^[30]
6. Only 52 miles (84 km) of Jordan Creek flow through Oregon. The creek enters Oregon at about river mile 52.^[11]
7. Only 39 miles (63 km) of Succor Creek flow through Oregon. The creek enters Oregon at about river mile 44 and leaves it at about river mile 5.^[11]
8. Only about 46 miles (74 km) of the Lost River flow through Oregon. The river enters Oregon at about river mile 48 and leaves it at about river mile 2.^[119]
9. About 50 miles (80 km) of the Applegate River flow through Oregon. This is the sum of the 46 miles (74 km) marked on topo maps plus the remaining distance to the California border, measured by map scale and ruler.^[162]
10. Only 36 miles (58 km) of Cow Creek flow through Oregon. The creek enters Oregon at about river mile 36.^[11]
11. Only about 10 miles (16 km) of the Walla Walla River flow through Oregon. The river leaves the state and enters Washington at about river mile 40.^[176]

References

1. Loy, et al., pp. 162–169
2. United States Geological Survey. "United States Geological Survey Topographic Map". TopoQuest. Retrieved August 19, 2010.
3. Oregon Atlas & Gazetteer. Freeport, Maine: Delorme Mapping. 1991. ISBN 978-0-89933-235-2.
4. Based on information in United States Geological Survey maps published on the Internet by TopoQuest, the Oregon Atlas, and the Oregon Atlas & Gazetteer. Locations are in Oregon except as noted.
5. The mouth coordinates, mouth elevation, and source coordinates are from the Geographic Names Information System (United States Geological Survey) listing for each river except for the source coordinates of the Columbia River, which are from the Canadian Geographical Names Data Base.
6. Derived from Google Earth search using Geographic Names Information System (GNIS) source coordinates.
7. Kammerer, J.C. (May 1990). "Largest Rivers in the United States". United States Geological Survey. Retrieved August 5, 2010.
8. "Oregon's Publicly-Owned Waterways". Oregon Department of State Lands. March 16, 2009. Retrieved September 20, 2010.
9. "Columbia River". Geographic Names Information System. United States Geological Survey. November 28, 1980. Retrieved August 5, 2010.
10. "Columbia Lake". Natural Resources Canada. Retrieved January 31, 2011.
11. "National Hydrography Dataset". United States Geological Survey. Retrieved September 3, 2010.
12. "Snake River". Geographic Names Information System (GNIS). United States Geological Survey. September 10, 1979. Retrieved August 6, 2010.
13. "Owyhee River". Oregon Environmental Council. Retrieved September 20, 2010.
14. Benke and Cushing, Chapter 13, p. 647
15. "Owyhee River". Geographic Names Information System (GNIS). United States Geological Survey. November 28, 1980. Retrieved August 13, 2010.
16. Benke and Cushing, Chapter 12, p. 563
17. "Klamath River". Geographic Names Information System. United States Geological Survey (USGS). January 19, 1981. Retrieved August 16, 2010.
18. "Bull Trout Recovery Plan: Columbia River/Klamath (2002), Chapter 9: John Day River" (PDF). United States Fish and Wildlife Service. pp. iv–3. Retrieved August 12, 2010.
19. "John Day River". Bureau of Land Management. Retrieved August 11, 2010.
20. "John Day River". Geographic Names Information System (GNIS). United States Geological Survey. November 28, 1980. Retrieved August 12, 2010.
21. "Bull Trout Recovery Plan: Columbia River/Klamath (2002), Chapter 7: Deschutes River" (PDF). United States Fish and Wildlife Service. pp. iv–4. Retrieved August 13, 2010.
22. "Deschutes River". Geographic Names Information System. United States Geological Survey (USGS). November 28, 1980. Retrieved August 16, 2010.
23. United States Geological Survey (USGS). "United States Geological Survey Topographic Map: Hamaker Butte, Oregon quad". TopoQuest. Retrieved August 8, 2010. The Hamaker, Oregon, quadrant map includes a river mile (RM) marker for RM 211 (river kilometer 346) near the confluence of the Rogue River with Mazama Creek. The remaining 4 miles (6 km) is an estimate based on map scale and ruler.
24. Benke and Cushing, Chapter 12, p. 569
25. "Rogue River". Geographic Names Information System (GNIS). United States Geological Survey. November 28, 1980. Retrieved August 8, 2010.
26. "Bull Trout Recovery Plan: Columbia River/Klamath (2002), Chapter 11: Malheur River" (PDF). United States Fish and Wildlife Service. p. 1. Retrieved August 12, 2010.
27. "Malheur River". Geographic Names Information System. United States Geological Survey (USGS). November 28, 1980. Retrieved August 16, 2010.
28. "Tributaries". Willamette Riverkeeper. Retrieved August 9, 2011.
29. "Willamette River". Geographic Names Information System (GNIS). United States Geological Survey. November 28, 1980. Retrieved August 6, 2010.
30. United States Geological Survey (August 9, 2011). "United States Geological Survey Topographic Map" (Map). TopoQuest. Sunset Dynamics. Retrieved August 9, 2011.
31. "Bull Trout Recovery Plan: Columbia River/Klamath (2002), Chapter 11: Grande Ronde River" (PDF). United States Fish and Wildlife Service. p. 5. Retrieved August 12, 2010.
32. "Grande Ronde River". Geographic Names Information System. United States Geological Survey (USGS). September 10, 1979. Retrieved August 16, 2010.
33. "Bull Trout Recovery Plan: Columbia River/Klamath (2002), Chapter 13: Hells Canyon" (PDF). United States Fish and Wildlife Service. p. 2. Retrieved August 13, 2010.
34. "Powder River". Geographic Names Information System. United States Geological Survey (USGS). November 28, 1980. Retrieved August 16, 2010.
35. United States Geological Survey (USGS). "United States Geological Survey Topographic Map". TopoQuest. Retrieved August 18, 2010. Map quadrants show river mileage from mouth to source.
36. "Crooked River". Geographic Names Information System. United States Geological Survey (USGS). November 28, 1980. Retrieved August 16, 2010.
37. Length derived by subtracting the main stem length of 187 miles (301 km) from the United States Geological Survey figure of 309 miles (497 km) for the main stem plus the Middle Fork
38. "Middle Fork Willamette River". Geographic Names Information System (GNIS). United States Geological Survey. November 28, 1980. Retrieved August 9, 2010.
39. Johnson, Jill; Maser, Joseph (ed.). "Nehalem River Watershed Assessment 1.0 Introduction". Environmental Sciences and Resources Department, Portland State University. Retrieved August 16, 2010. Cite uses deprecated parameter |coauthors= (help)
40. "Nehalem River". Geographic Names Information System. United States Geological Survey (USGS). November 28, 1980. Retrieved August 16, 2010.
41. "North Fork John Day River". Geographic Names Information System (GNIS). United States Geological Survey (USGS). November 28, 1980. Retrieved August 15, 2010.
42. United States Geological Survey (USGS). "United States Geological Survey Topographic Map". TopoQuest. Retrieved August 12, 2010. The map quadrants include river mile markers from mouth to source.
43. Benke and Cushing, Chapter 12, p. 585
44. "Umpqua River". Geographic Names Information System. United States Geological Survey (USGS). November 28, 1980. Retrieved August 16, 2010.
45. United States Geological Survey (USGS). "United States Geological Survey Topographic Map". TopoQuest. Retrieved August 17, 2010. Map quadrangles show river mileage from mouth to source.
46. Ame, John (2007). "Siuslaw Watershed". Oregon State University. Retrieved October 17, 2010.
47. "Siuslaw River". Geographic Names Information System. United States Geological Survey (USGS). November 28, 1980. Retrieved August 16, 2010.
48. "Summary of Environmental Information on the Umpqua River Basin". National Oceanic and Atmospheric Administration. Archived from the original on January 17, 2013. Retrieved August 16, 2010.
49. "North Umpqua – 17100301: 8-Digit Hydrologic Unit Profile" (PDF). National Resources Conservation Service, United States Department of Agriculture. May 2006. Retrieved August 17, 2010.
50. "North Umpqua River". Geographic Names Information System. United States Geological Survey (USGS). November 28, 1980. Retrieved August 16, 2010.
51. "South Umpqua – 17100302: 8-Digit Hydrologic Unit Profile" (PDF). National Resources Conservation Service, United States Department of Agriculture. May 2006. Retrieved August 16, 2010.
52. "South Umpqua River". Geographic Names Information System. United States Geological Survey (USGS). November 28, 1980. Retrieved August 16, 2010.
53. "Jordan – 17050108, 8 Digit Hydrologic Unit Profile" (PDF). National Resources Conservation Service. p. 2. Retrieved August 28, 2010.
54. "Jordan Creek". Geographic Names Information System. United States Geological Survey. November 28, 1980. Retrieved August 28, 2010.
55. "Burnt River". Geographic Names Information System. United States Geological Survey (USGS). November 28, 1980. Retrieved August 16, 2010.
56. Sheehan, p. 290
57. "Silvies – 17120002 8-Digit Hydrologic Unit Profile" (PDF). Natural Resources Conservation Service (NRCS). 2006. p. 1. Retrieved August 14, 2010.
58. "Silvies River". Geographic Names Information System (GNIS). United States Geological Survey (USGS). November 28, 1980. Retrieved August 14, 2010.
59. "About the Watershed". North Santiam Watershed Council. Archived from the original on March 10, 2012. Retrieved August 9, 2010.
60. "North Santiam River". Geographic Names Information System (GNIS). United States Geological Survey. November 28, 1980. Retrieved August 8, 2010.
61. "Decision Notice and Finding of No Significant Impact (FONSI): Big Marsh Creek and Little Deschutes River Wild and Scenic River Plans". United States Forest Service. 2001. Archived from the original (PDF) on October 18, 2012. Retrieved August 26, 2010.
62. "Little Deschutes River". Geographic Names Information System. United States Geological Survey (USGS). November 28, 1980. Retrieved August 16, 2010.
63. United States Geological Survey (USGS). "United States Geological Survey Topographic Map". TopoQuest. Retrieved August 14, 2010. The maps include river mile markers for the lower 88 miles (142 km) of the river. The remaining distance is an estimate based on map scale and ruler.
64. "Smith River Watershed". Smith River Watershed Council. Retrieved August 14, 2010.
65. "Smith River". Geographic Names Information System (GNIS). United States Geological Survey (USGS). November 28, 1980. Retrieved August 14, 2010.
66. "Watershed Facts". McKenzie Watershed Council. Retrieved August 8, 2010.
67. "McKenzie River". Geographic Names Information System (GNIS). United States Geological Survey. November 28, 1980. Retrieved August 7, 2010.
68. "Bull Trout Recovery Plan: Columbia River/Klamath (2002), Chapter 10: Umatilla–Walla Walla" (PDF). United States Fish and Wildlife Service. pp. 2–4. Retrieved August 12, 2010.
69. "Umatilla River". Geographic Names Information System (GNIS). United States Geological Survey (USGS). November 28, 1980. Retrieved August 14, 2010.
70. "Watershed Boundary Dataset". USDA, NRCS, National Cartography and Geospatial Center. Retrieved September 4, 2010. ArcExplorer GIS data viewer.
71. "Dry River". Geographic Names Information System. United States Geological Survey. November 28, 1980. Retrieved September 3, 2010.
72. Harney County Watershed Council (May 2000). "Silver Creek Subbasin Assessment" (PDF). Oregon State University. Retrieved August 24, 2010.
73. "Silver Creek". Geographic Names Information System. United States Geological Survey. November 28, 1980. Retrieved August 5, 2010.
74. McDowell, P.F.; O'Connor, J.E.; Lind, P. (2005). "Sprague River geomorphology studies, Klamath Basin, Oregon (abstract #H31H-06)". The Smithsonian/NASA Astrophysics Data System (Smithsonian Astrophysical Observatory). Bibcode:2005AGUFM.H31H..06M. Retrieved April 11, 2011.
75. "Sprague River". Geographic Names Information System. United States Geological Survey (USGS). November 28, 1980. Retrieved August 16, 2010.
76. Taylor, Barbara (1999). "Indian Use" (PDF). Salmon and Steelhead Runs and Related Events of the Clackamas River Basin: A Historical Perspective. Portland General Electric. p. 5. Archived from the original (PDF) on March 11, 2006. Retrieved August 6, 2010.
77. "Clackamas River, Oregon". Geographic Names Information System. United States Geological Survey. 1980. Retrieved August 7, 2010.
78. Tualatin River Watershed Council. "Frequently Asked Questions". Tualatin River Watershed Council. Archived from the original on July 17, 2012. Retrieved August 6, 2010.
79. "Tualatin River". Geographic Names Information System (GNIS). United States Geological Survey. November 28, 1980. Retrieved August 6, 2010.
80. "Rock Creek". Geographic Names Information System (GNIS). United States Geological Survey. November 28, 1980. Retrieved September 3, 2010.
81. The Willow Creek Local Advisory Committee (March 5, 2008). "Willow Creek Agricultural Water Quality Management Area Plan" (PDF). Oregon Department of Agriculture. p. 11. Retrieved August 9, 2011.
82. "Willow Creek". Geographic Names Information System. United States Geological Survey. November 28, 1980. Retrieved August 23, 2010.
83. "South Fork Crooked – 17070303 8-Digit Hydrologic Unit Profile" (PDF). National Resources Conservation Service (NRCS). May 2005. Retrieved September 3, 2010.
84. "South Fork Crooked River". Geographic Names Information System. United States Geological Survey (USGS). November 28, 1980. Retrieved September 3, 2010.
85. "Middle Fork John Day River". Geographic Names Information System. United States Geological Survey. November 28, 1980. Retrieved August 12, 2010.
86. United States Geological Survey (USGS). "United States Geological Survey Topographic Map". TopoQuest. Retrieved August 24, 2010. The maps include river mile markers for the lower 73 miles (117 km) of the river. The remaining distance is an estimate based on map scale and ruler.
87. "USGS Gage #14310000 on Cow Creek near Riddle, Oregon –– Water-Data Report 2009" (PDF). National Water Information System. United States Geological Survey. 2009. Retrieved August 23, 2010.
88. "Cow Creek". Geographic Names Information System (GNIS). United States Geological Survey (USGS). November 28, 1980. Retrieved August 18, 2010.
89. "Lower Sycan Watershed Analysis" (PDF). United States Forest Service. 2005. p. 2. Retrieved August 20, 2010.
90. "Sycan River". Geographic Names Information System (GNIS). United States Geological Survey (USGS). November 28, 1980. Retrieved August 13, 2010.
91. "Imnaha River – 17060102: 8-Digit Hydrologic Unit Profile" (PDF). National Resources Conservation Service, United States Department of Agriculture. March 2006. Retrieved August 12, 2010.
92. "Imnaha River". Geographic Names Information System (GNIS). United States Geological Survey. November 28, 1980. Retrieved June 29, 2009.
93. "Calapooia River". Geographic Names Information System (GNIS). United States Geological Survey. November 28, 1980. Retrieved August 7, 2010.
94. Sheehan 2005, pp. 298–99.
95. Risley, John C.; Laenen, Antonius (1999). "Upper Klamath Lake Basin Nutrient-Loading Study—Assessment of Historic flows in the Williamson and Sprague Rivers". United States Geological Survey (USGS). Retrieved August 14, 2010.
96. "Williamson River". Geographic Names Information System. United States Geological Survey (USGS). November 28, 1980. Retrieved August 16, 2010.
97. "Mid Snake River/Succor Creek Watershed" (PDF). Idaho Department of Environmental Quality. June 2005. p. 63. Archived from the original (PDF) on November 29, 2010. Retrieved August 31, 2010.
98. "USGS 13173500 Succor Creek At Mouth Nr Homedale ID". United States Geological Survey. Retrieved August 31, 2010.
99. "Succor Creek". Geographic Names Information System. United States Geological Survey (USGS). November 28, 1980. Retrieved August 31, 2010.
100. United States Geological Survey (USGS). "United States Geological Survey Topographic Map". TopoQuest. Retrieved August 18, 2010. Map quadrants show river mileage from mouth to source.
101. Ame, John (2007). "Siletz Watershed". Oregon State University. Retrieved October 17, 2010.
102. "Siletz River". Geographic Names Information System. United States Geological Survey (USGS). November 28, 1980. Retrieved August 16, 2010.
103. United States Geological Survey. "United States Geological Survey Topographic Map". TopoQuest. Retrieved August 7, 2010. The map quadrants include river-mile markers for the stream's entire length.
104. "Watershed Issues". South Santiam Watershed Council. Retrieved August 9, 2010.
105. "South Santiam River". Geographic Names Information System (GNIS). United States Geological Survey. November 28, 1980. Retrieved August 7, 2010.
106. "Introduction to the Coquille Watershed". Coquille Watershed Association. Retrieved August 25, 2010.
107. "South Fork Coquille River". Geographic Names Information System (GNIS). United States Geological Survey. November 28, 1980. Retrieved August 25, 2010.
108. "West Little Owyhee River". Geographic Names Information System. United States Geological Survey (USGS). November 28, 1980. Retrieved August 31, 2010.
109. United States Geological Survey. "United States Geological Survey Topographic Map". TopoQuest. The map quadrants include river-mile (RM) markers to RM 59 (river kilometer 95). The remaining distance is an estimate based on map scale and ruler.
110. "Organizational Overview". Pudding River Watershed Council. Retrieved August 6, 2010.
111. "Pudding River". Geographic Names Information System (GNIS). United States Geological Survey. November 28, 1980. Retrieved August 10, 2010.
112. United States Geological Survey. "United States Geological Survey Topographic Map". TopoQuest. Retrieved September 2, 2010. The map quadrants include river-mile (RM) markers to RM 52 (river kilometer 84). The remaining distance is an estimate based on map scale and ruler.
113. "Luckiamute Watershed". Luckiamute Watershed Council. Archived from the original on September 8, 2015. Retrieved October 4, 2015.
114. "Luckiamute River". Geographic Names Information System (GNIS). United States Geological Survey. November 28, 1980. Retrieved September 2, 2010.
115. Bully Creek Watershed Coalition; et al. (1997). "Bully Creek Watershed Assessment and Strategy" (PDF). Oregon Department of Fish and Wildlife. p. 9. Retrieved October 3, 2015.
116. "Bully Creek". Geographic Names Information System. United States Geological Survey. November 28, 1980. Retrieved August 27, 2010.
117. Cole, Michael B.; Blaha, Rich J.; Lemke, Jena L.; ABR, Inc., Environmental Research & Services (November 2003). "Upper South Fork of the John Day River Watershed Assessment" (PDF). Oregon Department of Fish and Wildlife. Retrieved August 21, 2010. Cite uses deprecated parameter |coauthors= (help)
118. "South Fork John Day River". Geographic Names Information System (GNIS). United States Geological Survey (USGS). November 28, 1980. Retrieved August 12, 2010.
119. United States Geological Survey (USGS). "United States Geological Survey Topographic Map". TopoQuest. Retrieved August 17, 2010. Map quadrants show river mileage from mouth to source.
120. "Lost River Subbasin Agricultural Water Quality Management Area Plan" (PDF). Oregon Department of Agriculture. 2006. p. 12. Archived from the original (PDF) on October 12, 2012. Retrieved August 9, 2011.
121. "Lost River". Geographic Names Information System. United States Geological Survey (USGS). November 28, 1980. Retrieved August 16, 2010.
122. "Environmental Assessment for the Blitzen River Fish Passage Improvement Project" (PDF). U.S. Fish and Wildlife Service. March 2010. pp. 15–16. Retrieved August 14, 2010.
123. "Donner und Blitzen – 17120003 8-Digit Hydrologic Unit Profile" (PDF). National Resources Conservation Service (NRCS). 2006. Retrieved August 14, 2010.
124. "Donner und Blitzen River". Geographic Names Information System. United States Geological Survey (USGS). November 28, 1980. Retrieved August 16, 2010.
125. United States Geological Survey. "United States Geological Survey Topographic Map". TopoQuest. Retrieved August 8, 2010. The map quadrants include river mile (RM) markers from the mouth to RM 55 (river kilometer 89), upstream of Grand Ronde, Oregon. The remaining distance is an estimate based on map scale and ruler.
126. "Map 1: The Yamhill River Basin & the Chehalem Valley" (PDF). Yamhill Basin Council. 2002. Archived from the original (PDF) on December 26, 2004. Retrieved August 9, 2011. The total is the sum of five subwatersheds: Upper Yamhill, Mill Creek, Salt Creek, Lower South Yamhill/Deer Creek, and Willamina Creek.
127. "South Yamhill River". Geographic Names Information System. United States Geological Survey. November 28, 1980. Retrieved August 9, 2010.
128. Fenton, Jason. ""Use of Radio Telemetry to Document Movements of Bull Trout in the North Fork Malheur River, Oregon 2002" in Evaluation of the Life History of Native Salmonids in the Malheur River Basin" (PDF). Bonneville Power Administration. p. 5. Retrieved August 26, 2010.
129. Malheur Watershed Council; Burns Paiute Tribe (May 2004). "Malheur River Subbasin Assessment and Management Plan For Fish and Wildlife Mitigation" (PDF). Northwest Power and Conservation Council. Retrieved August 26, 2010.
130. "North Fork Malheur River". Geographic Names Information System. United States Geological Survey. November 28, 1980. Retrieved August 26, 2010.
131. Ame, John (2007). "Yaquina Watershed". Oregon State University. Retrieved October 17, 2010.
132. "Yaquina River". Geographic Names Information System (GNIS). United States Geological Survey (USGS). November 28, 1980. Retrieved August 14, 2010.
133. Maudlin, Michael (December 2000). "Umatilla Sub-Basin Assessment" Check |url= value (help) (PDF). Washington State University. Retrieved August 24, 2010.
134. "Butter Creek". Geographic Names Information System (GNIS). United States Geological Survey (USGS). November 28, 1980. Retrieved August 24, 2010.
135. "Rattlesnake Creek". Geographic Names Information System (GNIS). United States Geological Survey (USGS). November 28, 1980. Retrieved September 3, 2010.
136. "Malheur River Basin Agricultural Water Quality Management Area Plan". Oregon Department of Agriculture. February 15, 2001. p. 9. Archived from the original (PDF) on September 5, 2010. Retrieved March 5, 2011. Reference states that Willow Creek is dammed 41 miles (66 km) from its mouth. The remaining distance is an estimate based on map scale and ruler.
137. Malheur Watershed Council; Burns Paiute Tribe (May 2004). "Malheur River Subbasin Assessment and Management Plan For Fish and Wildlife Mitigation" (PDF). Northwest Power and Conservation Council. p. 14. Retrieved March 5, 2011.
138. "Willow Creek". Geographic Names Information System (GNIS). United States Geological Survey (USGS). November 28, 1980. Retrieved August 24, 2010.
139. Maguire, Mike (June 2001). "Chetco River Watershed Assessment" (PDF). South Coast Watershed Council. Retrieved August 17, 2010.
140. "Chetco River". Geographic Names Information System. United States Geological Survey (USGS). November 28, 1980. Retrieved August 16, 2010.
141. "Illinois River, Oregon". National Wild and Scenic Rivers. Archived from the original on June 10, 2010. Retrieved September 1, 2010. The distance between the source and the upstream boundary of the Wild and Scenic section, which begins at river mile (RM) 50.4 (river kilometer 81.1) and ends at the mouth, is an estimate based on map scale and ruler.
142. Hickman, O. Eugene. "Potential Natural (Historic?) Vegetation of the Central Illinois River Valley". Oregon Department of Fish and Wildlife. Retrieved May 22, 2009. The document is Appendix E of the Illinois Appendices in zipped PDF format.
143. "Illinois River". Geographic Names Information System. United States Geological Survey (USGS). November 28, 1980. Retrieved August 16, 2010.
144. "Rock Creek". Geographic Names Information System. United States Geological Survey (USGS). November 28, 1980. Retrieved September 3, 2010.
145. United States Geological Survey. "United States Geological Survey Topographic Map". TopoQuest. Retrieved August 18, 2010. The map quadrants include river mile (RM) markers from the mouth to RM 50 (river kilometer 74.5). The remaining distance is an estimate based on map scale and ruler.
146. "Wallowa River—17060105: 8-Digit Hydrologic Unit Profile" (PDF). National Resources Conservation Service, United States Department of Agriculture. March 2006. Retrieved August 20, 2010.
147. "Wallowa River". Geographic Names Information System. United States Geological Survey (USGS). November 28, 1980. Retrieved August 16, 2010.
148. "Bull Trout Recovery Plan: Columbia River/Klamath (2002), Chapter 6: Hood River" (PDF). United States Fish and Wildlife Service. p. 4. Retrieved August 13, 2010.
149. "Sandy River". Geographic Names Information System. United States Geological Survey (USGS). November 28, 1980. Retrieved August 16, 2010.
150. "Long Tom Subbasin Fish Management Plan" (PDF). Oregon Department of Fish and Wildlife. March 1992. Retrieved September 3, 2010.
151. "Long Tom Watershed Assessment" (PDF). Long Tom Watershed Council. January 2000. Retrieved September 3, 2010.
152. "Long Tom River". Geographic Names Information System (GNIS). United States Geological Survey (USGS). November 28, 1980. Retrieved September 3, 2010.
153. "Fifteenmile Creek Basin Aquatic Habitat Restoration Strategy" (PDF). United States Forest Service. May 2010. Retrieved September 3, 2010.
154. "Fifteenmile Creek". Geographic Names Information System (GNIS). United States Geological Survey (USGS). November 28, 1980. Retrieved September 3, 2010.
155. "Dry Creek". Geographic Names Information System (GNIS). United States Geological Survey. November 28, 1980. Retrieved March 13, 2011.
156. United States Geological Survey (USGS). "United States Geological Survey Topographic Map". TopoQuest. Retrieved August 17, 2010. Map quadrangles show river mileage from the mouth to 49.7 miles (80.0 km). The remaining distance is an estimate based on map scale and ruler.
157. "Nestucca Bay Watershed TMDLs and Water Quality Management Plan" (PDF). Oregon Department of Environmental Quality. Retrieved August 20, 2010. Includes the watershed of the Little Nestucca River, which is a tributary of Nestucca Bay but not the Nestucca River main stem.
158. "Nestucca River". Geographic Names Information System. United States Geological Survey (USGS). November 28, 1980. Retrieved August 16, 2010.
159. "Warm Springs River". Geographic Names Information System. United States Geological Survey (USGS). November 28, 1980. Retrieved September 3, 2010.
160. "North Fork Coquille River". Geographic Names Information System (GNIS). United States Geological Survey. November 28, 1980. Retrieved August 25, 2010.
161. "Chewaucan River". Geographic Names Information System (GNIS). United States Geological Survey. November 28, 1980. Retrieved September 3, 2010.
162. "United States Geological Survey Topographic Map". Geographic Names Information System. TopoQuest. Retrieved August 17, 2010. Map quadrants show river mileage from the mouth to river mile (RM) 46 or river kilometer (RK) 74 near the intake for Applegate Dam. The remaining distance is an estimate based on map scale and ruler.
163. "Little Applegate River Watershed Analysis" (PDF). Bureau of Land Management. May 1995. p. 1. Retrieved August 18, 2010.
164. "Applegate River". Geographic Names Information System. United States Geological Survey (USGS). November 28, 1980. Retrieved August 16, 2010.
165. "Trout Creek Watershed Assessment" (PDF). Oregon Department of Fish and Wildlife. August 2002. Retrieved September 3, 2010.
166. "Trout Creek". Geographic Names Information System. United States Geological Survey (USGS). November 28, 1980. Retrieved September 3, 2010.
167. "USGS 13180000 Cow Creek At Danner,Oreg". United States Geological Survey. Retrieved September 3, 2010.
168. "Cow Creek". Geographic Names Information System. United States Geological Survey (USGS). November 28, 1980. Retrieved September 3, 2010.
169. "Vmap0". GIS-Lab. Retrieved September 3, 2010.
170. "Oregon Hydrologic Units". United States Geological Survey. 1996. Retrieved September 3, 2010.
171. "Crooked Creek". Geographic Names Information System (GNIS). United States Geological Survey. November 28, 1980. Retrieved September 3, 2010.
172. "Minam River Spring Chinook Population" (PDF). Northwest Fisheries Science Center of the National Oceanic and Atmospheric Administration. p. 2. Retrieved August 17, 2010.
173. "Minam River". Geographic Names Information System (GNIS). United States Geological Survey (USGS). November 28, 1980. Retrieved August 16, 2010.
174. United States Geological Survey. "United States Geological Survey Topographic Map". TopoQuest. Retrieved August 9, 2010. The map quadrants include river mile (RM) markers from the mouth to RM 46.3 (river kilometer 74.5). The remaining distance is an estimate based on map scale and ruler.
175. "Molalla River". Geographic Names Information System (GNIS). United States Geological Survey. November 28, 1980. Retrieved August 9, 2010.
176. United States Geological Survey (USGS). "United States Geological Survey Topographic Map". TopoQuest. Retrieved August 18, 2010. The maps include river mile markers for the lower 46 miles (74 km) of the river. The remaining distance is an estimate based on map scale and ruler.
177. "Walla Walla River". Geographic Names Information System (GNIS). United States Geological Survey (USGS). November 28, 1980. Retrieved August 14, 2010.

Works cited

• Benke, Arthur C., ed., and Cushing, Colbert E., ed.; Carter, James L.; Resh, Vincent H. (2005). "Chapter 12: Pacific Coast Rivers of the Coterminous United States" in Rivers of North America. Burlington, Massachusetts: Elsevier Academic Press. ISBN 978-0-12-088253-3.
• Benke, Arthur C., ed., and Cushing, Colbert E., ed.; Stanford, Jack A.; Gregory, Stanley V.; Hauer, F. Richard; Snyder, Eric B. (2005). "Chapter 13: Columbia River Basin" in Rivers of North America. Burlington, Massachusetts: Elsevier Academic Press. ISBN 978-0-12-088253-3.
• Loy, William G., ed.; Allan, Stuart; Buckley, Aileen R.; Meacham, James E. (2001) [1976]. Atlas of Oregon, 2nd edition. Eugene, Oregon: University of Oregon Press. ISBN 978-0-87114-101-9.
• Sheehan, Madelynne Diness (2005). Fishing in Oregon: The Complete Oregon Fishing Guide (10th ed.). Scappoose, Oregon: Flying Pencil Publications. ISBN 978-0-916473-15-0.

External links

• Map of Oregon drainage basins published by State of Oregon Water Resources Department