Hydrology: What does a hydrologist do?

Detailed Description
Russ Buesing using a cable car to access a gage (05104500) in winter (March 26) on the Roseau River near Malun, MN
Sources/Usage
Public Domain.
Russ Buesing using a cable car to access a gage (05104500) in winter (March 26) on the Roseau River near Malun, MN
Public Domain.