Ur (root)

Ur is the Basque word for 'water'.

This root may be found in many place names and some derivates as:

• uharre / ugarre 'torrent'
• uhaitz / ugaitz 'torrential river' (French gave).
• urtz-◂ Ourse > Ousse, Urtzaran, Ossau Valley < valis ursaliensis (1127), Oursbelille

House names (thus family names)

• Uhalde or Ugalde, from ur alde 'water side'; Family names: Duhalde, Uhalt, Duhalt.
• Uharte or Ugarte, from ur arte 'between water' ('between two brooks'; 'island'); Family names: Duhart, Duarte'.

River names (thus village names)

• Urola, from ur ola 'hut of the water', coastal river in Azpeitia and Zumaia (Spain)
• Urrobi, from ur hobi 'water hole', tributary of the Irati River, in Navarre
• Ugaran, from ur haran 'water valley', in Zugarramurdi
• Uhabia, from ur habia 'water hole', coastal river in Bidart (France)
• Uhaneko erreka, right tributary of the Nive in Cambo-les-Bains
• Uhanki, brook in Saint-Michel
• Urontho (= Urondo) tributary of Ur Handia between Jatxou and Villefranque
• Ur Handia 'big brook', brooks in Larrau and tributary of the Ardanabia in Hasparren
• Ur Gaitza (Urgatxa) 'dangerous brook', tributary of the Ardanabia in Urcuit
• Ur Ona (Uroneko erreka) 'good water', brook in Ahetze
• Ur Xuria (Urtxuria) 'white water', tributary of the Irati River from the Larrau Pass
• Ur Beltza, Ur Beltxa 'black water', brook in Aldudes
• Urepel 'tepid water', commune of the Pyrénées-Atlantiques
• Urcuray, river and village of the commune of Hasparren

and probably:

• Urioko erreka, tributary of the Figareliko erreka in Sare (Uri, tributary of the Harane in Sare).
• Oria, coastal river in Lasarte-Oria.
• Urlo, tributary of the Haltzabala from Espelette and Souraïde.
• Urma, tributary of the Nivelle from Ainhoa.