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Pump hoist truck at Shavano Park at Fawn Drive
Comal 1 spring run
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Groundwater sampling equipment at AY-68-27-610 (Parkwood Park).
Groundwater sampling equipment at AY-68-27-610 (Parkwood Park).Back cover photo from
Nitrate sensor at the Frio River at Concan, Tex.
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Comal spring run
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Frio Stilling well
Photo from pages 8 and 9 of
Photo from pages 8 and 9 of
Dry Frio below Concan
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Helotes flood
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A crest-stage gage provides a one-time measure of a flood peak height.
A crest-stage gage provides a one-time measure of a flood peak height.A Crest Stage Gage
Here is a low-tech device made of solely of a metal pipe, a wooden pole, and crushed cork that is invaluable to providing a one-time measurement of the maximum height (stage) that a stream hits during a high-water event.
A crest-stage gage provides a one-time measure of a flood peak height.
A crest-stage gage provides a one-time measure of a flood peak height.A Crest Stage Gage
Here is a low-tech device made of solely of a metal pipe, a wooden pole, and crushed cork that is invaluable to providing a one-time measurement of the maximum height (stage) that a stream hits during a high-water event.
Taking a High-Water Mark after Hurricane Harvey
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.
Taking a High-Water Mark after Hurricane Harvey
USGS scientist Steve Hannes marks high water marks along the Colorado River after flooding from Harvey in Matagorda County, Texas.
USGS scientist Steve Hannes marks high water marks along the Colorado River after flooding from Harvey in Matagorda County, Texas.
Taking a High-Water Mark after Hurricane Harvey
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.
Taking a High-Water Mark after Hurricane Harvey
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.
Recording high water marks after Harvey
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 near Corpus Christi, Texas.
Recording high water marks following Harvey
USGS scientist David Rodriguez records high water marks from storm surge following Harvey near Corpus Christi, Texas.
USGS scientist David Rodriguez records high water marks from storm surge following Harvey near Corpus Christi, Texas.
High Water Mark Surveying
USGS scientist Alec McDonald surveying high water marks from storm surge from Hurricane Harvey at Packery Channel near Corpus Christi, Texas.
USGS scientist Alec McDonald surveying high water marks from storm surge from Hurricane Harvey at Packery Channel near Corpus Christi, Texas.
Surveying High Water Marks following Harvey
USGS scientist Vidal Mendoza surveying high water marks from storm surge from Hurricane Harvey near Port Aransas, Texas.
USGS scientist Vidal Mendoza surveying high water marks from storm surge from Hurricane Harvey near Port Aransas, Texas.
Pre- and post-Harvey photos for Sargent, 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%.
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%.
Collecting Water Quality Samples following 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 scientists Lisa Ashmore and Lee Bodkin collect water-quality samples on Lake Houston in response to the high flow conditions that resulted from Harvey.
Servicing a water-quality monitor following Harvey
Servicing a water-quality monitor following HarveyUSGS scientist Lisa Ashmore services a water-quality monitor on Lake Houston. These instruments stayed afloat and collected data throughout Harvey.
Servicing a water-quality monitor following Harvey
Servicing a water-quality monitor following HarveyUSGS scientist Lisa Ashmore services a water-quality monitor on Lake Houston. These instruments stayed afloat and collected data throughout Harvey.
Water Quality Sampling Planning Following Hurricane Harvey
Water Quality Sampling Planning Following Hurricane HarveyA 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
Water Quality Sampling Planning Following Hurricane Harvey
Water Quality Sampling Planning Following Hurricane HarveyA 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