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Survey Structures that use Panels of sites

Often the objectives of estimates for large regions (entire State) and sufficient sample sizes within subpopulations, combined with available annual funding lead to two different approaches:

Rotating Panels

Permits annual coverage and estimate for entire State
Build up of sample size attains precision requirements after a few years

4 year rotating panel example - Oregon Coastal Watersheds

Rotation Basins

Supports adequate sample size within area surveyed (basins)
Entire State covered after a few years

3 year rotating basin example - West Virginia Streams

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