Latitude: 40.118333° N,
Longitude: 99.516944° W,
Horizontal Datum:
NAD83
River Stage Reference Frame |
Gauge Height |
Flood Stage |
Uses |
NWS stage |
0 ft |
19 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 |
1966.53 ft |
1985.53 ft |
Survey grade GPS equipment, FEMA flood plain maps, newer USGS topographic maps |
NGVD 29 |
Not Available |
Not Available |
Older USGS topographic maps, NGVD29 benchmarks |
MSL |
Not Available |
Not Available |
Older USGS topographic maps, MSL benchmarks |
Other |
Not Available |
Not Available |
Vertical datum changed from NGVD29 to NAVD88 in 2007. Then in 2009 the vertical datum changed from NAVD88 2001.02 to NAVD88 1966.53 |
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