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Texas Water Science Center

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Current streamflow conditions map.
View a detailed map.





USGS Water Science Centers are located in each state.

There is a USGS Water Science Center office in each State. Washington Oregon California Idaho Nevada Montana Wyoming Utah Colorado Arizona New Mexico North Dakota South Dakota Nebraska Kansas Oklahoma Texas Minnesota Iowa Missouri Arkansas Louisiana Wisconsin Illinois Mississippi Michigan Indiana Ohio Kentucky Tennessee Alabama Pennsylvania West Virginia Georgia Florida Caribbean Alaska Hawaii New York Vermont New Hampshire Maine Massachusetts South Carolina North Carolina Rhode Island Virginia Connecticut New Jersey Maryland-Delaware-D.C.

Water Resources of Texas

The U.S. Geological Survey (USGS) Texas Water Science Center works in cooperation with approximately 100 municipalities, river authorities, groundwater districts, and State and Federal agencies in Texas to provide reliable, impartial scientific information to resource managers, planners, and other customers. This information is gathered by the USGS Texas Water Science Center to minimize the loss of life and property from natural disasters, to contribute to the conservation and sound economic and physical development of the Nation's natural resources, and to enhance the quality of life by monitoring water, biological, energy, and mineral resources.

The USGS provides real-time stream stage and stream flow, water quality, and groundwater levels for more than 650 sites in Texas.


USGS WaterAlert

Receive instant, customized updates about water conditions by subscribing to WaterAlert.

Quick Link to Real-Time Data

View site list: SW | GW | QW
TX Basins

Click on the map for links to real-time sites by river basin


Spotlight on: Water Science Seminars

10 Years of USGS Texas Water Science Seminars!

Since 2004, the USGS Texas Water Science Center has provided 100 free public seminars!

These informal Science Seminars serve to broadly share information about water issues pertinent to Texas by:

  • Highlighting activities being done in the Texas Water Science Center
  • Exploring scientific research results from the USGS and other agencies
  • Hosting national and international subject matter experts

See upcoming seminars or browse the seminar archive at

To be alerted to upcoming seminars and other USGS information, email

Spotlight on: Texas Projects

Contaminants in Streambed and Suspended-Sediments in Bexar County

    Hydrologic Technician Brian Petri

    Elevated concentrations of sediment-associated contaminants are typically associated with urban areas, and San Antonio is the seventh most populous city in the U.S. During 2007–09, the USGS collected streambed sediment samples during baseflow and suspended-sediment samples during stormwater runoff at 20 sites in the Medio Creek, Medina River, Elm Creek, Martinez Creek, Chupaderas Creek, Leon Creek, Salado Creek, and San Antonio River watersheds. The samples were analyzed for major and trace elements and organic compounds including halogenated compounds and polycyclic aromatic hydrocarbons (PAHs). Concentrations were mostly low compared to consensus-based sediment-quality guidelines and compared to samples collected during previous USGS studies in the Austin and Fort Worth areas. The overall degree of sediment contamination was highest in samples collected from four sites in Leon Creek and one site in the San Antonio River.

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Developed and powered by the Texas WSC

Walker River Basin Hydro Mapper

Walker Basin Hydromapper Screenshot

The newly released web-based Walker Basin Hydro Mapper aims to provide real-time visualization of streamflow, and waterbody stage and volume in the Walker River Basin.

Real-time hydrologic data are used to monitor floods and droughts, inform water supply and agricultural water-use management decisions, and monitor and track restoration efforts in the basin.

Features include:

  • USGS streamflow-gaging stations symbolized using near real-time streamflow data
  • Reservoir capacity and current volume
  • Time slider with data back to 2008
  • Dynamic hydrographs for lakes and reservoirs and stream gages

Learn more:

Developed and Powered by TXWSC

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2014 Water Data Now Available

Beginning with the 2014 water year, on-demand water-year summary reports are available from NWISWeb.

To retrieve Water Year Summaries

  • This takes you to the NWIS Web home page for the state. Several search options are available from there, including a 'Current Conditions' list of active real-time sites and the NWIS Mapper.
  • The various search options will help you find individual sites.
  • Once at the site page, select "Water-Year Summary" from the 'Available data for this site' pull-down menu.
    For example, Site 07300000 water-year summary

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Page Last Modified: Friday, 13-Mar-2015 16:29:29 EDT