Latitude 30°07'45.38", Longitude -96°11'12.78" - NAD27
Washington County, Texas
Hydrologic Unit 12070101

Drainage Area: 43,880 square miles
Contributing Drainage Area: 34,314 square miles
Datum of Gauge: 107.90 feet above NGVD29
Data Source 1: http://waterdata.usgs.gov/tx/nwis/uv?site_no=08111500
Data Source 2: http://water.weather.gov/ahps2/hydrograph.php?wfo=hgx&gage=hpdt2