Data

Current and historical conditions, daily data, statistics, peak-flow data, and field measurements from the USGS National Water Information System (NWIS).

Current and historical conditions, statistics, and field/lab samples from the USGS National Water Information System (NWIS).

Real-time water-quality conditions from more than 80 sites across Texas.

Well locations, current and historical water levels, and statistics from the USGS National Water Information System (NWIS).

Use the map to find active wells in Texas with links to site information, statistics, and data.

Sites in Texas that have annual groundwater data for 20 years or more.

Real-time groundwater levels from more than 40 sites across Texas.

Real-time streamflow conditions from more than 600 sites across Texas.

This data release consists of three geophysical data sets measured in the lower Guadalupe River channel, south-central Texas, and one supplementary geophysical data set measured in a laboratory. The lower Guadalupe River is incised into the outcrop of the Carrizo-Wilcox aquifer in south-central Texas. The river and the aquifer are hydraulically connected across the outcrop, although the

Dispersal, establishment, and spread of aquatic invasive species such as the zebra mussel (Dreissena polymorpha) can be influenced by riverine velocities and volumetric flows in invaded lake-stream ecosystems. Zebra mussels, which have a planktonic larval form (veliger), disperse rapidly downstream from a source population. Concentrations, dispersal, and body conditions of zebra mussel...

Hydrologic water-budgets were calculated for the Medina and Diversion Lake system near San Antonio, Texas for periods between March 1955 and June 2002. The hydrologic-budgets were calculated from daily hydrologic data that included precipitation, evaporation, streamflow, and change in reservoir storage. The residual of the hydrologic budgets represent ground-water outflow from the Medina...

In February 2017, the Grand River Dam Authority filed to relicense the Pensacola Hydroelectric Project with the Federal Energy Regulatory Commission. The predominant feature of the Pensacola Hydroelectric Project is Pensacola Dam, which impounds Grand Lake O the Cherokees (locally called Grand Lake) in northeastern Oklahoma. Identification of information gaps and assessment of project...