West Hemlock Creek

West Hemlock Creek

West Hemolock Creek near its mouth looking upstream
Origin valley in eastern West Hemlock Township, Montour County, Pennsylvania
Mouth Hemlock Creek in Hemlock Township, Columbia County, Pennsylvania
41°01′14″N 76°30′19″W / 41.02051°N 76.50534°W / 41.02051; -76.50534Coordinates: 41°01′14″N 76°30′19″W / 41.02051°N 76.50534°W / 41.02051; -76.50534
Progression Hemlock Creek → Fishing Creek → Susquehanna River → Chesapeake Bay
Length 3.7 mi (6.0 km)
Mouth elevation 567 ft (173 m)
Basin area 2.80 sq mi (7.3 km2)

West Hemlock Creek is a tributary of Hemlock Creek in Montour County and Columbia County, in Pennsylvania, in the United States. It is approximately 3.7 miles (6.0 km) long and flows through West Hemlock Township, Montour County and Hemlock Township, Columbia County.[1] The creek has at least one unnamed tributary. West Hemlock Creek and its unnamed tributary are considered by the Pennsylvania Department of Environmental Protection to be impaired. The watershed of the creek has an area of 2.80 square miles (7.3 km2). The creek is designated as a coldwater fishery. Rock formations in the watershed include the Catskill Formation and the Trimemrs Rock Formation.

Course

West Hemlock Creek begins in a valley in eastern West Hemlock Township, near Hedge Road. It flows east for a short distance to the edge of the township and then flows along the township line for some distance. The creek then turns southeast into Hemlock Township, Columbia County.[1]

In Hemlock Township, the valley of West Hemlock Creek gets deeper. The creek continues southeast and east for a few miles. It then leaves the valley and almost immediately reaches its confluence with Hemlock Creek near the community of Buckhorn.[1]

West Hemlock Creek joins Hemlock Creek 3.02 miles (4.86 km) upstream of its mouth.[2]

Tributaries

Tributaries of West Hemlock Creek include the unnamed tributary UNT 65640353.[3]

Hydrology, geography, and geology

3.7 miles (6.0 km) of West Hemlock Creek is considered by the Pennsylvania Department of Environmental Protection to be impaired.[4] The cause of the impairment is siltation due to agricultural activity. 0.5 miles (0.80 km) of an unnamed tributary of the creek also experience the same impairment for the same reason.[3]

The elevation of West Hemlock Creek near its mouth is 567 feet (173 m) above sea level.[5] The lower reaches of the creek lie over rock of the Trimmers Rock Formation. The upper reaches are on rock of the Irish Valley Member of the Catskill Formation. It is also near the West Hemlock Creek Fault.[6]

The areas along West Hemlock Creek that are a hazard for floods are mostly not developed.[7]

Watershed

The watershed of West Hemlock Creek has an area of 2.80 square miles (7.3 km2).[2] The land between the creek and Interstate 80 is forested.[8]

Biology

West Hemlock Creek is designated as a coldwater fishery.[4] The slopes of the valley of West Hemlock Creek contain a riparian buffer that is composed mainly of eastern hemlock. There are also forested seeps on the creek. According to the Columbia County Natural Areas Inventory, these may contain "sensitive ecological features".[8]

See also

References

  1. 1 2 3 United States Geological Survey, The National Map Viewer, retrieved July 23, 2014
  2. 1 2 Pennsylvania Gazetteer of Streams (PDF), November 2, 2001, retrieved July 23, 2014
  3. 1 2 Pennsylvania Department of Environmental Protection (January 8, 2013), HEMLOCK CREEK WATERSHED TMDL Columbia and Montour Counties (PDF), retrieved July 23, 2014
  4. 1 2 Columbia County, Pennsylvania CHESAPEAKE BAY TRIBUTARY STRATEGY (PDF), March 2013, retrieved July 23, 2014
  5. ↑ Topographic Map Stream Features in Columbia County, Pennsylvania, retrieved July 23, 2014
  6. ↑ James H. Dolimpio (1990), Bedrock geologic map of the Washingtonville and Millville quadrangles, Montour, Columbia, and Northumberland counties, Pennsylvania, retrieved July 22, 2014
  7. ↑ APPENDIX C FEMA STUDY (PDF), February 4, 2008, retrieved July 23, 2014
  8. 1 2 The Pennsylvania Science Office of The Nature Conservancy (2004), Columbia County Natural Areas Inventory 2004 (PDF), retrieved July 23, 2014
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