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Texas

Central Texas Coastal

Left: the Central Texas Coastal basin (WBD HUC4 1210) with its NHDPlus HR network, its larger lakes, reservoirs and coastal bays as water, and our two models (USGS 08178800 and USGS 08185000) in orange. Right: the USGS 08185000 model drawn large, every one of its channels, with its water bodies in blue.
Left: the Central Texas Coastal basin, with our two models (USGS 08178800 and USGS 08185000) in orange and its larger lakes, reservoirs and coastal bays in blue. Right: the USGS 08185000 model drawn large, its channels in orange and its water bodies in blue.
  • 2 published SWAT+ models
  • NHDPlus HR: 52,938 km of network flow paths in its Texas HUC8s, 2.27x NHDPlus V2.1's 23,370 km, over catchment areas that differ by 11.4 % between the two datasets
  • 75 USGS gauges with a 90 % daily record, 2014-2024, in its Texas HUC8s (15 of 17 HUC8s covered)
  • 17 HUC8s mostly in Texas, 46,360.1 km² in all (WBD HUC12 sum)

Basin: HUC4 1210 (Central Texas Coastal) of the USGS Watershed Boundary Dataset.

Our models in this basin

Upper San Antonio · USGS 08178800 (Salado Creek at Loop 13, San Antonio)

Cibolo · USGS 08185000 (Cibolo Creek at Selma)

NHDPlus HR, not Version 2, in this basin

020,00040,00060,00080,000100,000020,00040,00060,00080,000100,000NHDPlus Version 2.1, kmNHDPlus HR, kmLower CanadianNorth CanadianRed HeadwatersRed-Washita River BasinRed-SulphurSabineNeches River BasinTrinity River BasinGalveston Bay-San JacintoBrazos HeadwatersMiddle BrazosLower BrazosUpper ColoradoLower Colorado-San Bernard CoastalNueces-Southwestern Texas CoastalRio Grande-AmistadRio Grande Closed BasinsLower PecosRio Grande-FalconCentral Texas CoastalCentral Texas Coastal
Each point is one basin (WBD HUC4), over its HUC8s that lie mostly in Texas: its network flow paths in NHDPlus Version 2.1 (across) and in NHDPlus HR (up), filled with canals and ditches in both counts, hollow without them. On the line, the two would be equal. Ringed: the two datasets' areas for this basin differ by more than 5 %: Galveston Bay-San Jacinto, Brazos Headwaters, Lower Brazos, Upper Colorado, Lower Colorado-San Bernard Coastal, Central Texas Coastal, Rio Grande Closed Basins, Lower Pecos and Rio Grande-Falcon. In this figure, this basin's points are orange.

A model of your Texas watershed

We build a SWAT+ model for a USGS stream gauge in Texas, from national data. You download it as files you open in SWAT+ Editor and run, and you keep the files.

Free, $0, to try it on a real station. Starter, $50 / month USD. MAX, $100 / month USD. Cloud calibration is pay as you go, on every plan including Free.

See the plans and order

Texas: all our models and work · Lower Colorado-San Bernard Coastal · Neches River Basin · Nueces-Southwestern Texas Coastal · Red-Washita River Basin · Trinity River Basin