Skip to main content
U.S. flag

An official website of the United States government

Scientist Emeritus Stewart Rounds

Detailed Description

While carrying out a water-quality study on Henry Hagg Lake in the Tualatin River Basin of northwestern Oregon, we needed to collect samples from various depths in the lake.  This photo shows me working to lower a Van Dorn sampling bottle into the lake using a downrigger apparatus.  

Sources/Usage

Public Domain.