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Hank Johnson

Team Lead-Hydrologist

Contact Info


Short Biography

Hank Johnson is a hydrologist with the U.S. Geological Survey at the Oregon Water Science Center in Portland, Oregon. He received his M.S. in Environmental Science and Engineering from Oregon Graduate Institute in 1996, and a B.S. in Geology from Virginia Tech (1992). Mr. Johnson joined the USGS as a student in 1996 to help develop a ground-water flow model for the upper Deschutes River basin in Oregon. He has spent much of his career studying the fate and transport of agricultural chemicals in surface and ground water through field studies and modeling. He has worked with the National Water Quality Assessment Program (NAWQA) since 1999. Mr. Johnson is currently a member of the NAWQA surface water trends team, a diverse group of environmental chemists, statisticians, and ecologists working to quantify and explain trends in nutrients, carbon, sediment, pesticides, and major ions in streams across the United States.

Current Studies

Water-Quality Analyst, Surface Water Trends Team, National Water-Quality Assessment Program (NAWQA)

Project Lead, Modeling nitrogen in streams draining arid and irrigated lands in Central Washington, Central Oregon, and Western Idaho using SPARROW

Co-investigator, Modeling in-stream nutrient loads in monitored and unmonitored streams of the Pacific Northwest using SPARROW, a geospatial multivariate regression model





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My Science Topics


Science Topic
Subtopic
Environmental Issuesground-water quality
Environmental Issuesnonpoint-source pollution
Environmental Issuespesticides and herbicides
Environmental Issuessurface water quality
Environmental Issueswater quality
Techniques and Methodsmathematical modeling
Techniques and Methodsmathematical simulation
Techniques and Methodsstatistical analysis
Techniques and Methodsgeographic information systems (GIS)



My USGS Science Strategy Areas

Understanding Ecosystems & Predicting Ecosystems Change

The Role of Environment and Wildlife in Human Health

Contaminant Fate and Transport

Surficial and subsurface transport and transformation of pesticides and nutrients

Applications of isotopes and anthropogenic contaminants as hydrologic tracers

Hydrology of irrigated agricultural systems

 

 


Contact Information

Hank Johnson
2130 SW 5th Avenue
Portland, OR 97201
503-251-3472
503-251-3470 - Fax
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