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Level III Ecoregions of South Dakota

Revised April 2000
National Health and Environmental Effects Research Laboratory
U.S. Environmental Protection Agency

level III ecoregions of South Dakota region 17   17. Middle Rockies
region 25   25. Western High Plains
region 42   42. Northwestern Glaciated Plains
region 43   43. Northwestern Great Plains
region 44   44. Nebraska Sand Hill Plains
region 46   46. Northern Glaciated Plains
region 47   47. Western Corn Belt Plains
region 48   48. Lake Agassiz Plain