Researchers set up block nets to perform population estimates. (Thumb)

(Credit: Jill Hardiman, USGS - Western Fisheries Research Center. Public domain.)
Detailed Description
Sam Doak (center) and scientists from the Confederated Tribes and Bands of the Yakama Nation set up block nets to perform population estimates of fish in a pool on Rock Creek, WA.
Details
Image Dimensions: 250 x 250
Date Taken:
Location Taken: Rock Creek, WA, US
Credits
Jill Hardiman, USGS