| 16.0 | THE BRIDGE AT THE GAGING LOCATION IS OVERTOPPED THE BIG SIOUX RIVER WILL BE ABOUT 1 MILE WIDE AND MANY FARM BUILDINGS AROUND CASTLEWOOD WILL BE FLOODED | | 15.0 | THE WATER REACHES THE BOTTOM OF THE BRIDGE 1 MILE SOUTH OF CASTLEWOOD | | 12.9 | THE WATER REACHES THE BOTTOM OF THE BRIDGE AT THE GAGE | | 11.7 | SIGNIFICANT AMOUNTS OF PASTURE AND OTHER AGRICULTURAL LAND WILL BE FLOODED | | 11.0 | SIGNIFICANT AMOUNTS OF PASTURE AND OTHER AGRICULTURAL LANDS WILL BE FLOODED | | 9.2 | THE ROAD ON THE SOUTHWEST SIDE OF CASTLEWOOD IS OVERTOPPED | | 8.0 | MINOR FLOODING OF LOW-LYING AGRICULTURAL LANDS ALONG THE RIVER WILL BEGIN | | 7.5 | THE WATER LEVEL IS ABOVE THE TOP OF THE CULVERTS ON THE SOUTHWEST SIDE OF CASTLEWOOD |
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1) 12.87 ft on 04/11/1997
2) 12.27 ft on 04/08/2001
3) 11.73 ft on 03/30/1986
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Low water records are unavailable.
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