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Photo of a camera system that will be tested to measure water level an

By Water Resources Mission Area 2019 (approx.)
Photo of a camera system that will be tested to measure water level and surface velocity
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Detailed Description

Example of a camera system that will be tested to measure water level and surface velocity at the East Branch Brandywine Creek below Downingtown, PA. Photo Credit: USGS staff. This technology is part of the USGS Next Generation Water Observing System in the Delaware River Basin.

Sources/Usage

Public Domain.