| Flood Impacts |
| 53.8 | CREST OF RECORD WHICH OCCURRED IN DECEMBER 1982. INCREDIBLE FLOODING EXPERIENCED AND ALL BRIDGES ACROSS THE LOWER RIVER OVERTOPPED. TOWN OF GILBERT FLOODED. |
| 50.0 | HIGHWAY 65 FLOODS AND WILL BE CLOSED. SOME FLOODING IN GILBERT. |
| 42.0 | CREST OF THE MAY 1990 FLOOD EVENT. EXPECT SIMILAR DAMAGES AND IMPACTS. |
| 35.0 | ALL OF TYLER BEND ACCESS AREA IS FLOODED. BACKWATER UP BEAR, MILL, AND CALF CREEKS FLOOD AN EXTENSIVE AREA OF THE VALLEY. |
| 27.0 | TYLER BEND ACCESS AREA BEGINS TO FLOOD. SOME CAMPSITES ARE UNDER WATER AND A COMFORT STATION IS FLOODED. |
| 20.0 | LIMITED IMPACTS DUE TO THE LACK OF PRIVATE PROPERTY ALONG THE RIVER. SOME ACCESS POINTS AND PUBLIC FACILITIES WILL BE EFFECTED. THE NATIONAL PARK SERVICE HAS RECOMMENDED THAT FLOAT ACTIVITIES STOP WELL BELOW THIS FLOW LEVEL AND CONDITIONS ARE DANGEROUS TO RECREATIONAL FLOATERS. FLOODPLAIN ALONG THE NORTH BANK BEGINS TO FLOOD. |
