Latitude: 31.836944° N,
Longitude: 99.003611° W,
Horizontal Datum:
Not Available
River Stage Reference Frame |
Gauge Height |
Flood Stage |
Uses |
NWS stage |
0 ft |
Not Available |
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 |
Not Available |
Not Available |
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 |
NULL |
NULL |
Prior to February 23, 1999, Historical Crests are based on a local datum (Reservoir Datum) that is approximately 0.5 ft higher than NGVD 1929. |
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