Atlas recording spawning and nursery areas of fish in the Great Lakes and associated rivers listed by area and then by species. A 14-volume atlas in PDF format. Published in 1982 by the U.S. Fish and Wildlife Service.
Web site for an Internet Map Service (IMS) serving base cartographic data, USGS data, science applications and real time modelling analyses for the Columbia River basin using geospatial analysis technology.
Interactive maps and databases showing geospatial, biologic, and ecological aspects of the upper Mississippi River. Includes water quality, fish species, and vegetation distribution as well as geographic reference information.
Interactive databases providing detailed information on fish and macroinvertebrate abundance and diversity over time in pools of the upper Mississippi River basin.
U.S. Department of the Interior |
U.S. Geological Survey