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photo of 3 women beside Long Island road measuring groundwater with instrumentation
Groundwater Sampling on Long Island
Groundwater Sampling on Long Island
Groundwater Sampling on Long Island

Groundwater sampling for water quality on Long Island, New York

Groundwater sampling for water quality on Long Island, New York

White tanks used to hold the tracer injection solutions with tubing going to injection wells
Antibiotics in Groundwater Tracer Injection
Antibiotics in Groundwater Tracer Injection
Antibiotics in Groundwater Tracer Injection

U.S. Geological Survey (USGS) scientists conducted a unique study, which demonstrated that the ecology of natural groundwater bacteria changed after exposure of the bacteria to the antibiotic sulfamethoxazole (SMX).

U.S. Geological Survey (USGS) scientists conducted a unique study, which demonstrated that the ecology of natural groundwater bacteria changed after exposure of the bacteria to the antibiotic sulfamethoxazole (SMX).

Aerial view of Assateague Island
Aerial view of Assateague Island
Aerial view of Assateague Island
Aerial view of Assateague Island

Aerial view of Assateague Island, looking north. Ocean City, Maryland, is visible in the far distance at top. Sinepuxent Bay lies between the island’s western shore and the Delmarva Peninsula to the upper left. Photograph taken in 1998 

Aerial view of Assateague Island, looking north. Ocean City, Maryland, is visible in the far distance at top. Sinepuxent Bay lies between the island’s western shore and the Delmarva Peninsula to the upper left. Photograph taken in 1998 

Image: Lewy Lake Station 01019300
Lewy Lake Station 01019300
Lewy Lake Station 01019300
Lewy Lake Station 01019300

USGS lake elevation gage on Lewy Lake at Princeton, Maine, station 01019300. 

USGS lake elevation gage on Lewy Lake at Princeton, Maine, station 01019300. 

Image: Kennebec River at The Forks
Kennebec River at The Forks
Kennebec River at The Forks
Kennebec River at The Forks

The view of the river from the USGS gaging station on the Kennebec River at The Forks, station 01042500. 

The view of the river from the USGS gaging station on the Kennebec River at The Forks, station 01042500. 

Image: Spednic Lake Sunrise
Spednic Lake Sunrise
Spednic Lake Sunrise
Spednic Lake Sunrise

Sunrise on the shore of Spednic Lake before heading out on the lake to collect data for a study. 

Sunrise on the shore of Spednic Lake before heading out on the lake to collect data for a study. 

Image: Kenduskeag Stream
Kenduskeag Stream
Kenduskeag Stream
Kenduskeag Stream

Six Mile Falls on Kenduskeag Stream at USGS station 01037000.

Six Mile Falls on Kenduskeag Stream at USGS station 01037000.

Connecticut River, Holyoke Dam during flood of March 1936
Connecticut River, Holyoke Dam during flood of March 1936
Connecticut River, Holyoke Dam during flood of March 1936
Connecticut River, Holyoke Dam during flood of March 1936

Connecticut River Holyoke Dam, Holyoke Water Power Company, during flood of March 1936.

Connecticut River Holyoke Dam, Holyoke Water Power Company, during flood of March 1936.

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