Scientist collects well water sample to test for isotopic age tracers. Well locations represent different flow paths in the aquifer system.
Michael J Sarantou (Former Employee)
Science and Products
National Water-Quality Assessment (NAWQA)
Our surface water, groundwater, and aquatic ecosystems are priceless resources, used by people across the Nation for drinking, irrigation, industry, and recreation. The National Water-Quality Assessment (NAWQA) Project is a leading source of scientific data and knowledge for development of science-based policies and management strategies to improve and protect our water resources.
Tualatin River Basin Water Quality Assessment
In 1990, the USGS began assessing water-quality in the Tualatin River. More then 30 years later, we are still monitoring conditions in the basin and conducting investigations to better understand stream processes within the basin.
Yakima River Water-Quality Studies
From 1986 to 2009, the USGS studied various aspects of watershed health in the Yakima River Basin. The results from these studies have been published and are available online.
Well water samples in the Umatilla River Basin
Scientist collects well water sample to test for isotopic age tracers. Well locations represent different flow paths in the aquifer system.
Science and Products
National Water-Quality Assessment (NAWQA)
Our surface water, groundwater, and aquatic ecosystems are priceless resources, used by people across the Nation for drinking, irrigation, industry, and recreation. The National Water-Quality Assessment (NAWQA) Project is a leading source of scientific data and knowledge for development of science-based policies and management strategies to improve and protect our water resources.
Tualatin River Basin Water Quality Assessment
In 1990, the USGS began assessing water-quality in the Tualatin River. More then 30 years later, we are still monitoring conditions in the basin and conducting investigations to better understand stream processes within the basin.
Yakima River Water-Quality Studies
From 1986 to 2009, the USGS studied various aspects of watershed health in the Yakima River Basin. The results from these studies have been published and are available online.
Well water samples in the Umatilla River Basin
Scientist collects well water sample to test for isotopic age tracers. Well locations represent different flow paths in the aquifer system.
Scientist collects well water sample to test for isotopic age tracers. Well locations represent different flow paths in the aquifer system.