USGS Scientists Taking Field Measurements
![Image: USGS Scientists Taking Field Measurements](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/full_width/public/17_0.jpg?itok=IQ7ghzM_)
Detailed Description
USGS scientists (from left) Judy Drexler, Tamara Kraus and Bryan Downing and Katy O’Donnell preparing to take spot field measurements in the San Francisco estuary.
Location: Northern San Francisco Estuary, CA
Sources/Usage
Public Domain.