Unified Interior Regions

Region 6: Arkansas-Rio Grande-Texas-Gulf

Regions L2 Landing Page Tabs

Filter Total Items: 261
Image: Oklahoma Groundwater Efforts

Oklahoma Groundwater Efforts

Photo of observation well, pressure transducer, and electric water-level tape in Norman, Oklahoma.

Image: Oklahoma Groundwater Efforts

Oklahoma Groundwater Efforts

USGS Hydrologists using the USGS Well Flowmeter and Downhole Sampler on a well in Moore, Oklahoma. More info can be found in Fact Sheet 2005-3111 (PDF).

Image: Oklahoma Groundwater Efforts

Oklahoma Groundwater Efforts

USGS Student Jessica Magers examining outcrop of the Rush Springs aquifer in Caddo County, Oklahoma for arsenic and other metals concentration.

Image: USGS staff verify measurments taken on the San Saba River in Texas

USGS staff verify measurments taken on the San Saba River in Texas

USGS staff checking the streamgage equipment on the San Saba River in Texas.

Image: Texas Orthorectified Landsat State Mosaic

Texas Orthorectified Landsat State Mosaic

This image was created using Tri-Decadal Global Landsat Orthorectified ETM+ Pan-Sharpened data, and draped with National Elevation Dataset (NED) data.

Visit the Landsat Missions website to learn more about Landsat.

Image: Early USGS streamgage on the San Saba river in Texas

Early USGS streamgage on the San Saba river in Texas

An early streamgage is used to measure water levels on San Saba River. USGS crews would visit this equipment to collect water level readings.

Image: Sinkhole in Daisetta, Texas

Sinkhole in Daisetta, Texas

Collapse sinkhole in a salt dome in Daisetta, Texas (September 2008). Salt is particularly susceptible to rapid dissolution causing large bowl-shaped sinkholes. Injection of fluids into this salt dome increased the dissolution of the salt causing a 60-foot deep sinkhole that covered several acres and destroyed many buildings.

Illinois River Floatcam

Illinois River Floatcam

The Illinois River Floatcam is located at USGS station 07196320 on the Illinois River near Moodys, OK (Combs Bridge), about 36 miles downstream from the Arkansas state line. This station does not provide continuous monitoring of flow and stage, but these measurements are

...