Caspar Creek:
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Check out research at Caspar Creek.
Since 1962, researchers have been studying the impacts of logging
operations on hydrology, erosion, and sedimentation in northern California
watersheds. TTS was first implemented in water year 1996 at 8 gaging stations in the
Caspar Creek watersheds. One new gaging station (XYZ) was added in 2000
and 10 new stations began operation in water year 2001.
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North Fork 120-degree compound V-notch weir and sampling bridge
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The bridge-mounted boom on the North Fork weir suspends
the turbidity probe in pond. The pumping sampler intake
line is mounted on the face of the weir and samples are
pumped from the V-notch.
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The fiberglass Montana flume at flume at the XYZ tributary
is a rated hydraulic structure with a known stage-discharge
relationship. Stage is measure with a pressure transducer
mounted in an attached stilling well. The pumping sampler
intake is mounted in the center of the flume floor near the
downstream lip.
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Montana flume at Caspar Creek tributary XYZ. From
this angle, the boom is upstream of the flume. The boom is used
to suspend the turbidity probe in the water.
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Close up view of the same boom at XYZ. The boards channel the water
towards the suspended turbidity probe at low flow. This allows the
turbidity probe to be submerged and functional at low flows.
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Last updated on January 24, 2000, by
Rand Eads
Research is being conducted by:
Cumulative Effects of Forest Mgmt on Hillslope
Processes, Fishery Resources, and Downstream Environments
(RWU-4351)
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