Images

USGS scientist Steve Hannes marks high water marks along the Colorado River after flooding from Hurricane Harvey in Wharton County, Texas.

USGS scientist Steve Hannes marks high water marks along the Colorado River after flooding from Hurricane Harvey in Wharton County, Texas.

USGS scientist Steve Hannes marks high water marks along the Colorado River after flooding from Hurricane Harvey in Wharton County, Texas.

USGS scientist Steve Hannes marks high water marks along the Colorado River after flooding from Harvey in Matagorda County, Texas.

USGS scientist David Rodriguez records high water marks from storm surge near Corpus Christi, Texas. 

USGS scientist David Rodriguez records high water marks from storm surge following Harvey near Corpus Christi, Texas. 

Location 4. Sand dunes along this stretch of coast in Sargent, Texas, were overwashed by large waves during the storm. Sand from the beach and dunes is covering the roadway behind the dunes and which may be impassable. The predicted probability of overwash in this area was 94%.

USGS scientist Vidal Mendoza surveying high water marks from storm surge from Hurricane Harvey near Port Aransas, Texas.

USGS scientist Alec McDonald surveying high water marks from storm surge from Hurricane Harvey at Packery Channel near Corpus Christi, Texas.

Extensive flooding inundated the Gulf Coast of Texas after Hurricane Harvey made landfall as a Category 4 hurricane on August 25, 2017. Among the many waterways in southeastern Texas that exceeded flood stage was the Brazos River, which flows past Houston to its west and to the Gulf of America at Freeport.

USGS scientist Jimmy Hopkins repairs a streamgage downstream of Addicks reservoir at Buffalo Bayou after flooding from Hurricane Harvey. This gauge is normally accessed on land from a platform on the side of a bridge.

A peek into a USGS planning meeting to coordinate water-quality sampling efforts in response to Harvey. This sampling effort is part of the federal government’s broad efforts to ensure public health and to support the state, tribal, and local response to the storm

A USGS field crew takes water-quality samples on Lake Houston following Harvey.

USGS scientist Lisa Ashmore services a water-quality monitor on Lake Houston. These instruments stayed afloat and collected data throughout the storm.

Photograph of USGS hydrologists Lisa Ashmore and Lee Bodkin collecting water quality data on Lake Houston after Hurricane Harvey

USGS scientists Lisa Ashmore and Lee Bodkin collect water-quality samples on Lake Houston in response to the high flow conditions that resulted from Harvey. 

USGS scientist Lisa Ashmore services a water-quality monitor on Lake Houston. These instruments stayed afloat and collected data throughout Harvey. 

USGS scientist Alec MacDonald takes flood measurements on the Guadalupe River in Victoria, Texas.

USGS scientist Tom Pistillo services the streamgage at Addicks Reservoir to ensure that accurate reservoir water-level data are being measured, which are critical for helping the U.S. Army Corps of Engineers and Harris County Flood Control District make informed reservoir operation decisions.

USGS field crew measure reservoir water-level data at Addicks Reservoir, which are critical for helping the U.S. Army Corps of Engineers make informed reservoir operation decisions.

USGS field crew measure reservoir water-level data at Addicks Reservoir, which are critical for helping the U.S. Army Corps of Engineers make informed reservoir operation decisions.