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Digging pit for the soil moisture sensors

By California Water Science Center
A team member helps dig the pit for the soil moisture sensors. Inset: close-up of soil removed from Squirrel Creek pit.
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Detailed Description

A team member helps dig the pit for the soil moisture sensors in the Plumas National Forest in California. Inset: close-up of soil removed from Squirrel Creek pit. 

Sources/Usage

Public Domain.