Missouri River Adjacent to Iowa
Pottawattamie County 1890
WoodBury County 1890
Pottwattamie and WoodBury County 1976
Summary of Changes in Missouri River Channel Features in 1879-1976
| year | river miles | channel area total | channel area Iowa (Nebr.) |
water area total | water area Iowa (Nebr.) |
|---|---|---|---|---|---|
| 1879 | 211.3 | 80,975 | 45,104 (35,871) |
57,756 | 32,279 (25,477) |
| 1890 | 214.9 | 71,889 | 41,737 (30,152) |
36,617 | 20,288 (16,329) |
| 1923 | 200.7 | 77,129 | 42,790 (34,338) |
45,647 | 24,739 (20,908) |
| 1947(total) | 197.7 | 49,483 | 23,702 (25,781) |
23,295 | 10,542 (12,752) |
| 1947(active) | 197.7 | 18.791 | 9,307 (9,484) |
15,671 | 7,612 (8,059) |
| 1976 | 182.7 | 15,477 | 7,672 (7,806) |
15,420 | 7,629 (7,791) |
| 1976(backwater) | 2,007 | 1,483 (524) |
Changes in the Channel Area of the Missouri River in Iowa, 1879-1876, Hallberg, G.R., Harbaugh, J.M. and Witinok, P.M. 1979. Iowa Geological Survey Special Rept. Series #1, 32p.
www.igsb.uiowa.edu
