StreamNet Fish and Hydrology Data for U.S. Pacific Northwest

StreamNet is a cooperative information management and dissemination project focused on fisheries and aquatic related data in the Columbia River basin and the Pacific Northwest. The project provides a variety of kinds of data related to fish resources through their online GIS data page.

http://www.arcgis.com/home/item.html?id=3be91b0a32a9488a901c3885bbfc2b0b

http://www.streamnet.org/data/interactive-maps-and-gis-data/