UMIS NAWQA

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USGS IN YOUR STATE

USGS Water Science Centers are located in each state.

Fish Community

During 1997-2005 over 90 fish species were collected from streams in the UMIS Study Unit.

Fish in the study unit are primarily warm- and cool-water species derived from the lower Mississippi River refugium during late Pleistocene and early Holocene periods (Underhill, 1989). Waterfalls at St. Anthony, on the Mississippi River, and at St. Croix Falls, on the St. Croix River physically separate the fish fauna of the two rivers into upper and lower reaches. There are approximately 70 species of fish found in the Mississippi River above St. Anthony's Falls and about 120 found below the falls. In the St. Croix River there are about 75 species found above St. Croix Falls and about 90 below (Eddy and Underhill, 1974; Becker, 1983; Underhill, 1989). The Minnesota River Basin has 84 native species of fish (Eddy and Underhill, 1974; Becker, 1983; Underhill, 1989).

List of species collected at each site.

List of characteristics of fish species.

Fish abundance data for each site at the USGS NAWQA Data Warehouse page.

References:

Becker, G.C., 1983, Fishes of Wisconsin: University of Wisconsin Press, Madison, Wisconsin, 1052 p.

Eddy, S., and Underhill, J.C., 1974, Northern Fishes, with special reference to the Upper Mississippi Valley. University of Minnesota Press, Minneapolis, Minn., 414 p.

Underhill, J.C., 1989, The distribution of Minnesota fishes and late Pleistocene glaciation. Journal of the Minnesota Academy of Sciences, v. 55, p. 32-37.