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| 15.0 |
Evacuation of a trailer court in Janesville may be required |
| 14.0 |
Town area south of 8th street is threatened. |
| 13.0 |
Much of the city park is flooded with nearby gravel roads affected. |
| 12.0 |
Significant lowland flooding occurs, especially within the city park. The flooding covers approximately 6000 acres. |
| 11.0 |
Lowland flooding of the city park occurs. |
| 10.0 |
The base of the gage house is surrounded by water. |
| 8.0 |
Water covers very low areas of the left bank. |
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Latitude: 42.648316° N,
Longitude: 92.465186° W,
Horizontal Datum:
NAD83
River Stage
Reference Frame |
Gauge Height |
Flood Stage |
Uses |
| NWS stage |
0 ft |
11 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 |
868.26 ft |
879.26 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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weather.gov 
