Images

A close-up view of the top part of one of the oldest streamgage structures constructed in Texas.

One of the oldest versions of a streamgage structure constructed in Texas.

Nearly completed construction of a streamgage structure in 1955 at Elm Fork Trinity River near Carollton, Texas.

Modern-day USGS streamgage at Elm Fork Trinity River near Carrollton, Texas.

In the earlier years of streamgaging, large “stilling wells” were constructed to contain the equipment needed to collect streamflow data. Historically, most of the streamflow equipment may have been located in these large structures, which were placed in the middle or next to the stream.

Looking upstream from gage site at Trinity River at Commerce Street Bridge.

This 1922 photo shows an early USGS streamgage on the Trinity River in Dallas.

This 2014 photo shows the new location of the USGS streamgage that measures high flows on the Trinity River in Dallas. The gage was once located on a pier, but in 1975 was moved next to the stream. 

Using shortwave infrared, near infrared, and visible bands, these Landsat images provide a before and after look at the 350 Complex and Anderson Creek fires.

Cool, clear rivers of the Texas Hill Country attract visitors for many recreational opportunities. Here, a family enjoys paddleboarding at Schreiner Park during spring break in Kerrville, Texas.

USGS scientist Jimmy Hopkins takes a streamflow measurement on the Sabine River on March 12 near Bon Weir, Texas.

A large-volume public supply well in San Antonio, Texas.  This well is being sampled for water-quality constituents as part of the NAWQA Enhanced Trend Network project.

USGS hydrologist Jason Ramage collects a groundwater-level measurement using a steel tape in Freeport, Texas. 

A new interactive web application illustrates how groundwater, sediment compaction and land-elevation change are related in the Houston-Galveston region in Texas. 

A sample of finchite, a newly discovered uranium mineral. Finchite is the yellow material on the surface of the rock. Finchite is found in the late Pleistocene sediments deposited during the Illinoian glacial stage.

Between Lamesa and Big Spring, Texas, runs the Sulfur Spring Draw, a dry creek. It's the site of an economic calcrete-type uranium deposit, the Sulfur Springs Draw Deposit, where a new mineral was discovered in 2015.

The Southern High Plains of New Mexico, Oklahoma, and Texas. USGS conducted a uranium assessment in this region in 2015.

A uranium-vanadate mineral in calcrete. This sample came from near the Sulfur Springs Draw in Texas. USGS conducted an assessment of uranium resources in this region in 2015.

A sample of finchite, a newly discovered uranium mineral. Finchite is the yellow material on the surface of the rock. Finchite is found in the late Pleistocene sediments deposited during the Illinoian glacial stage.

USGS scientist Bradley Van Gosen examines rock layers for the newly discovered mineral finchite near Lamesa, Texas.

A scanning electron microscope image of the newly discovered mineral finchite. The Denver Microbeam Lab provided this scan of finchite in order to help describe and identify the mineral as a new one. Finchite is a uranium mineral first observed in Martin County, Texas.

A calcrete outcropping near Sulfur Springs Draw in Texas. This deposit dates to the Pliocene and Pleistocene, and hosts uranium-vanadate minerals.