Setting reference marks

​USGS employees use a GPS to set reference marks next to a damn near St. Johnsbury, VT.

Detailed Description

​​Surface Water Modeling for FEMA Flood Insurance Rate Maps. 

USGS employees use a GPS to set reference marks next to a damn near St. Johnsbury, VT.​​​

Details

Image Dimensions: 1920 x 1080

Date Taken:

Location Taken: VT, US