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Dalgylch? Neu a yw'n fwy na 'catchment area'? Berwyn ----- Original Message ----- From: Pennawd Cyf. To: Berwyn Prys Jones Sent: Monday, October 11, 2004 10:26 AM Subject: watershed Nid 'cefn deuddwr' na 'gwahanfa ddwr', ond yr holl dir mae'r dwr oddi arno ac oddi tano yn draenio i afon neu lyn neu gorff dwr arall. Diffiniadau o'r We: "The specific land area that drains water into a river system or other body of water. " "..all the land that serves as a drainage for a specific stream or river. In urban watershed management, a watershed is seen as all the land which contributes runoff to a particular water body..." A oes term cydnabyddedig?