Latitude: 28.792778° N,
Longitude: 97.012778° W,
Horizontal Datum:
NAD83
River Stage
Reference Frame |
Gauge Height |
Flood Stage |
Uses |
| NWS stage |
21 ft |
21 ft |
Interpreting hydrographs and NWS watch, warnings, and forecasts, and inundation maps |
| Vertical Datum |
Elevation
(gauge height = 21) |
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 |
29.15 |
Not Available |
Older USGS topographic maps, NGVD29 benchmarks |
| MSL |
Not Available |
Not Available |
Older USGS topographic maps, MSL benchmarks |
| Other |
29.15 ft |
50.15 ft |
|
|