Unified Interior Regions

Region 6: Arkansas-Rio Grande-Texas-Gulf

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Photo of two of the main spring discharge points of Comal springs.
April 11, 2013

Two of the main spring discharge points of Comal springs, Texas

Two of the main spring discharge points of Comal springs.

A new website now provides important information about streamflow in the Comal and San Marcos Rivers and springflow at Comal and San Marcos Springs.

Travertine deposits near site 4 (Post Oak Falls near Tow, Texas, October 31, 2012).
October 31, 2012

Travertine deposits, Post Oak Falls near Tow, Texas

Travertine deposits near site 4 (Post Oak Falls near Tow, Texas, October 31, 2012) (photograph by Jennifer Wilson, U.S. Geological Survey).

SIR 2015–5098

Faulting in limestone outcrop downstream from where Greenwood Creek flows into the Colorado River.
October 31, 2012

Faulting in limestone outcrop, Greenwood Creek

Faulting in limestone outcrop downstream from where Greenwood Creek flows into the Colorado River, October 31, 2012 (photograph by Jennifer Wilson, U.S. Geological Survey).

SIR 2015–5098

Seeps along limestone outcrop downstream from where Jim John Creek flows into the Colorado River
October 31, 2012

Seeps along limestone outcrop, Jim John Creek

Seeps along limestone outcrop downstream from where Jim John Creek flows into the Colorado River, October 31, 2012 (photograph by Jennifer Wilson, U.S. Geological Survey).

SIR 2015–5098

Sam Rayburn Lake, September 2012
September 18, 2012

Sam Rayburn Lake

Sam Rayburn Lake, September 2012. Photograph by David LaRue, U.S. Army Corps of Engineers.

SIR 2012–5202

Filter Total Items: 175
USGS
January 21, 1999

Nutrients from the Mississippi River Basin are believed to be responsible, at least in part, for the large hypoxic zone that develops on the Louisiana-Texas shelf in the Gulf of Mexico each summer, according to Don Goolsby, a hydrologist with the U.S.Geological Survey in Denver, Colo.

USGS
October 22, 1998

After enduring a summer full of sweltering temperatures, tropical storms, and floods, 20 inches of rain suddenly fell in areas of south central and eastern Texas this past week causing weather turmoil once again. Flooding from these rains has teams of scientists from the U.S. Geological Survey (USGS) mobilized to take water level and discharge measurements at rain-swollen streams.

USGS
September 24, 1998

U.S. Geological Survey (USGS) scientist, Katherine Kendall, will be awarded the National Park Service’s Natural Resource Research Award on September 28, at the Service’s annual Natural Resources Stewardship and Science Meeting in Austin, Texas.

USGS
April 16, 1998

A 5-year study of water quality in the Rio Grande Valley, from its headwaters in Colorado to near El Paso, Texas, has been completed by the U.S. Geological Survey (USGS). The study focused on ground water in the flood plain of the Rio Grande and surface water in the Rio Grande and selected tributaries.

USGS
November 21, 1996

The gasoline additive MTBE (methyl tert-butyl ether) was detected in some urban stormwater samples collected in 16 cities and metropolitan areas by the U.S. Geological Survey, but all detections of MTBE were less than the lower limit of the U.S. Environmental Protection Agency’s draft lifetime health advisory for drinking water.

USGS
November 21, 1995

A quick computer search of the nearly 2 million official place names in the United States shows that Texas is still the state with the most geographic features named "Turkey." From "Turkey Creek" to "Turkeyroost Mountain," Texas has 175 features named after the holiday bird, an addition of one since the last check in 1982. Arizona is second with 134 turkey names.