Studying Marsh Subsidence
![Image: Studying Marsh Subsidence](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/full_width/public/Biomes_WaterWetlands_Wetlands_00053.jpg?itok=MDz60brK)
Detailed Description
National Wetlands Research Center workers set bench marks to study marsh subsidence.
Sources/Usage
Public Domain.
National Wetlands Research Center workers set bench marks to study marsh subsidence.
Public Domain.