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Wetland Resources of Eastern South Dakota

Results and Discussion

Eastern South Dakota Wetlands and Deepwater Habitats

Surface water (depressional and riverine wetlands) covers approximately 9.8% or 2,222,113 ac (899,277 ha) of the 35,390 mi² (90,600 km²) of eastern South Dakota (Fig. 9). Composition of the total area of surface water in eastern South Dakota is 80.1% palustrine wetlands, 16.8% lacustrine wetlands and deepwater habitats, and 3.1% riverine wetlands (Fig. 10). In the following discussion, total area for each system is partitioned by Cowardin et al. (1979) subsystems, classes, water regimes, and special modifiers. These acreages are presented for each eastern South Dakota county, USGS 8-digit hydrologic unit, and physiographic region in Appendices B-D.


Figure 9. Approximately 2,222,113 ac (899,277 ha) of wetlands were delineated by the NWI in the 35,390 mi² (90,600 km²) that comprise eastern South Dakota.	Figure 10. Acres of eastern South Dakota wetlands delineated by the NWI using the Cowardin et al. (1979) system.

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