Sampling invertebrates on the Colorado River downstream of Davis Dam with a Hess sampler
![USGS researcher standing in a river holding a metal Hess sampler to sample aquatic invertebrates](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/full_width/public/thumbnails/image/02-%20Hess%20sampling.png?itok=AjuMzTb7)
Detailed Description
Sampling invertebrates on “Casino Row” at Laughlin, Nevada, just downstream of Davis Dam on the Colorado River, September 7, 2015.
Sources/Usage
Public Domain.