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| 33.3 |
This is the RECORD FLOOD LEVEL that was reached on December 6 1982. |
| 30.6 |
This flood level was reached on September 28 1993. |
| 30.0 |
Major flooding begins. |
| 25.0 |
Moderate flooding begins. |
| 20.0 |
FLOOD STAGE. Right bank overflows. Also, State Highway D begins flooding near the Cooper Hill Conservation Area. |
| 19.5 |
State Route N north of US Highway 50 and north of Freedom begins flooding near this height. |
| 17.0 |
State Route RA begins flooding near this level. |
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Latitude: 38.389000° N,
Longitude: 91.821000° W,
Horizontal Datum:
NAD83
River Stage Reference Frame |
Gauge Height |
Flood Stage |
Uses |
| NWS stage |
0 ft |
20 ft |
Interpreting hydrographs and NWS watch, warnings, and forecasts, and inundation maps |
| Vertical Datum |
Elevation (gauge height = 0) |
Elevation (gauge height = flood stage) |
Elevation information source |
| NAVD88 |
N/A |
N/A |
Survey grade GPS equipment, FEMA flood plain maps, newer USGS topographic maps |
| NGVD 29 |
553.7 ft |
573.7 ft |
Older USGS topographic maps, NGVD29 benchmarks |
| MSL |
N/A |
N/A |
Older USGS topographic maps, MSL benchmarks |
| Other |
N/A |
N/A |
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Hydrologic Resources
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Additional Resources
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The National Weather Service prepares its forecasts and other services in collaboration with agencies like the US Geological Survey, US Bureau of Reclamation, US Army Corps of Engineers, Natural Resource Conservation Service, National Park Service, ALERT Users Group, Bureau of Indian Affairs, and many state and local emergency managers across the country. For details, please click here. |
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NWS Information |
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