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Explore water-related photography, imagery, and illustrations.
As part of the Regional Stream Quality Assessments (RSQA), hydrologists, ecologists, and technicians did ecological surveys of aquatic biota and stream habitat. Here, two hydrologic technicians record characteristics of stream habitat.
As part of the Regional Stream Quality Assessments (RSQA), hydrologists, ecologists, and technicians did ecological surveys of aquatic biota and stream habitat. Here, two hydrologic technicians record characteristics of stream habitat.
Biofilms take up pesticides in streams. Here, a hydrologic technician collects a sample of biofilm that has colonized an unglazed ceramic tile over 60-90 days. Learn more about biofilms as integrative samplers of pesticides here.
Biofilms take up pesticides in streams. Here, a hydrologic technician collects a sample of biofilm that has colonized an unglazed ceramic tile over 60-90 days. Learn more about biofilms as integrative samplers of pesticides here.
Biofilms take up pesticides in streams. Here, a hydrologic technician collects a sample of biofilm that has colonized an unglazed ceramic tile over 60-90 days. Learn more about biofilms as integrative samplers of pesticides here.
Biofilms take up pesticides in streams. Here, a hydrologic technician collects a sample of biofilm that has colonized an unglazed ceramic tile over 60-90 days. Learn more about biofilms as integrative samplers of pesticides here.
Biofilms take up pesticides in streams. Here, a hydrologic technician hold ups an unglazed ceramic tile that has been colonized by biofilm over 60-90 days. Learn more about biofilms as integrative samplers of pesticides here.
Biofilms take up pesticides in streams. Here, a hydrologic technician hold ups an unglazed ceramic tile that has been colonized by biofilm over 60-90 days. Learn more about biofilms as integrative samplers of pesticides here.
Flowers and graffiti turn urban Sausal Creek into a bizarre wonderland. Water-quality and ecological surveys were done at the creek as part of the USGS Regional Stream Quality Assessment (RSQA) in the summer of 2016.
Flowers and graffiti turn urban Sausal Creek into a bizarre wonderland. Water-quality and ecological surveys were done at the creek as part of the USGS Regional Stream Quality Assessment (RSQA) in the summer of 2016.
As part of the Regional Stream Quality Assessments (RSQA), hydrologists, ecologists, and technicians did ecological surveys of aquatic biota and stream habitat. Here, a hydrologic technician records characteristics of the habitat of a highly urbanized stream.
As part of the Regional Stream Quality Assessments (RSQA), hydrologists, ecologists, and technicians did ecological surveys of aquatic biota and stream habitat. Here, a hydrologic technician records characteristics of the habitat of a highly urbanized stream.
Sausal Creek in central Oakland, California, is an urban creek that has been extensively modified for flood control. The USGS Regional Stream Quality Assessment assessed the water quality and ecological integrity of small streams like Sausal Creek in five major regions of the country.
Sausal Creek in central Oakland, California, is an urban creek that has been extensively modified for flood control. The USGS Regional Stream Quality Assessment assessed the water quality and ecological integrity of small streams like Sausal Creek in five major regions of the country.
A hydrotech prepares to collect a water-quality sample at urban Sausal Creek, with its distinctive graffiti. Water-quality and ecological surveys were done at the creek as part of the USGS Regional Stream Quality Assessment (RSQA) in the summer of 2016.
A hydrotech prepares to collect a water-quality sample at urban Sausal Creek, with its distinctive graffiti. Water-quality and ecological surveys were done at the creek as part of the USGS Regional Stream Quality Assessment (RSQA) in the summer of 2016.
As part of the Regional Stream Quality Assessments (RSQA), hydrologists, ecologists, and technicians did ecological surveys of aquatic biota and stream habitat. Here, a hydrologist carefully folds a filter used to collect a sample for analysis of eDNA.
As part of the Regional Stream Quality Assessments (RSQA), hydrologists, ecologists, and technicians did ecological surveys of aquatic biota and stream habitat. Here, a hydrologist carefully folds a filter used to collect a sample for analysis of eDNA.
Sausal Creek in central Oakland, California, is an urban creek that has been extensively modified for flood control. The USGS Regional Stream Quality Assessment assessed the water quality and ecological integrity of small streams like Sausal Creek in five major regions of the country.
Sausal Creek in central Oakland, California, is an urban creek that has been extensively modified for flood control. The USGS Regional Stream Quality Assessment assessed the water quality and ecological integrity of small streams like Sausal Creek in five major regions of the country.
As part of the Regional Stream Quality Assessments (RSQA), hydrologists, ecologists, and technicians did ecological surveys of aquatic biota and stream habitat. Here, a geolomorphologist assesses stream banks.
As part of the Regional Stream Quality Assessments (RSQA), hydrologists, ecologists, and technicians did ecological surveys of aquatic biota and stream habitat. Here, a geolomorphologist assesses stream banks.
A helicopter towing a large, cylindrical sensor will make low-level flights over parts of Cedar Rapids, Iowa, as part of a groundwater survey in May 2017.
A helicopter towing a large, cylindrical sensor will make low-level flights over parts of Cedar Rapids, Iowa, as part of a groundwater survey in May 2017.
Research Hydrologist Neil Terry (USGS) collects ground-penetrating radar (GPR) data. Using hydrogeophysical tools such as GPR enables scientists to collect images of the structure and conditions of the ice below them. (April 2017)
Research Hydrologist Neil Terry (USGS) collects ground-penetrating radar (GPR) data. Using hydrogeophysical tools such as GPR enables scientists to collect images of the structure and conditions of the ice below them. (April 2017)
A helicopter towing a large, cylindrical sensor will make low-level flights over parts of Cedar Rapids, Iowa, as part of a groundwater survey in May 2017.
A helicopter towing a large, cylindrical sensor will make low-level flights over parts of Cedar Rapids, Iowa, as part of a groundwater survey in May 2017.
The Colorado River in Grand Canyon taken from Grand Canyon Village, Arizona.
The Colorado River in Grand Canyon taken from Grand Canyon Village, Arizona.
A helicopter towing a large, cylindrical sensor will make low-level flights over parts of Cedar Rapids, Iowa, as part of a groundwater survey in May 2017.
A helicopter towing a large, cylindrical sensor will make low-level flights over parts of Cedar Rapids, Iowa, as part of a groundwater survey in May 2017.
USGS employee Aaron Walsh performing wire weight measurement in record flood at gage 7018500 Big River at Byrnesville, MO
USGS employee Aaron Walsh performing wire weight measurement in record flood at gage 7018500 Big River at Byrnesville, MO
A helicopter towing a large, cylindrical sensor will make low-level flights over parts of Cedar Rapids, Iowa, as part of a groundwater survey in May 2017.
A helicopter towing a large, cylindrical sensor will make low-level flights over parts of Cedar Rapids, Iowa, as part of a groundwater survey in May 2017.
Shenandoah mobile laboratory fathead minnow experiment station
Shenandoah mobile laboratory fathead minnow experiment station
USGS hydrologic technician measures floodwaters along Flat Creek near Jenkins, Missouri using an Acoustic Doppler Current Profiling instrument.
USGS hydrologic technician measures floodwaters along Flat Creek near Jenkins, Missouri using an Acoustic Doppler Current Profiling instrument.
USGS hydrologic technician Christopher Rowden verifies the accuracy of streamgage information at the Jacks Fork River at Eminence, Missouri.
USGS hydrologic technician Christopher Rowden verifies the accuracy of streamgage information at the Jacks Fork River at Eminence, Missouri.