Wetland Resources of Eastern South Dakota

Table 7

Table 7. Acres of eastern South Dakota permanent basins by water regime and size class.

Size Class (ac) N^a D^b I^c
≤ 0.5 <1 (<1%) 15 (<1%) 1 (<1%)

0.5-1.0 <1 (<1%) 29 (<1%) 7 (<1%)

1.0-2.0 4 (<1%) 125 (2%) 13 (<1%)

2.0-5.0 15 (<1%) 378 (7%) 110 (<1%)

5.0-10.0 30 (<1%) 550 (11%) 434 (<1%)

10.0-100.0 14,417 (7%) 2,011 (39%) 6,764 (3%)

>100 179,571 (93%) 2,092 (40%) 256,826 (97%)

^a Natural permanent basins
^b Basins with permanent water regimes due to presence of an excavated feature such as a dugout
^c Permanent impoundments

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Size Class (ac)	N^a	D^b	I^c
≤ 0.5	<1 (<1%)	15 (<1%)	1 (<1%)
0.5-1.0	<1 (<1%)	29 (<1%)	7 (<1%)
1.0-2.0	4 (<1%)	125 (2%)	13 (<1%)
2.0-5.0	15 (<1%)	378 (7%)	110 (<1%)
5.0-10.0	30 (<1%)	550 (11%)	434 (<1%)
10.0-100.0	14,417 (7%)	2,011 (39%)	6,764 (3%)
>100	179,571 (93%)	2,092 (40%)	256,826 (97%)