USGS staff collecting water samples from the catwalk on Conowingo Dam

(Public domain.)
Detailed Description
USGS staff Dave Brower and Jeff Klein collecting water samples from the catwalk on Conowingo Dam. Streamgage 01578310 Susquehanna River at Conowingo, MD
Details
Image Dimensions: 5673 x 2763
Date Taken:
Location Taken: US