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| 28.6 |
FLOOD OF RECORD DURING HURRICANE AGNES. |
| 27.0 |
NEAR RECORD FLOODING BEGINS. |
| 23.0 |
RICHMOND CITY WATER FILTRATION PLANT ENDANGERED. |
| 22.0 |
MAJOR FLOODING BEGINS. DOWNSTREAM INDUSTRIES, SHOPS AND STREETS ALONG THE RIVERFRONT ARE FLOODED AT AND ABOVE THIS LEVEL. |
| 18.2 |
C&O RAILROAD TRACKS FLOODED. |
| 15.0 |
BEGIN MODERATE FLOODING. RESIDENCES NEAR GAGE THREATENED WITH SOME DRIVEWAYS UNDER ONE TO ONE AND A HALF FEET OF WATER. |
| 13.0 |
APPROXIMATELY 20 ACRES OF LOWLAND FLOODED IN VICINITY OF GAGE. |
| 12.0 |
FLOOD STAGE. MINOR FLOODING ALONG BOTH BANKS...NO DAMAGE AT THIS LEVEL. |
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Latitude: 37.563100° N,
Longitude: 77.547200° W,
Horizontal Datum:
NAD83
River Stage Reference Frame |
Gauge Height |
Flood Stage |
Uses |
| NWS stage |
0 ft |
12 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 |
98.82 ft |
110.82 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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