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Sample Design: Limnological Evaluation of Lake Roosevelt
  • ID: 16429
  • State: Published
  • Owner: Alex Kain
  • Spatial Design Category: Simple Random Sample, Stratified
  • Version History: v1.0 Published (12/5/2019)

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The details of this Sample Design, including all the parameters used to generate it, are included below. Sample designs must belong to a Study Design.

Description

Sample sites are selected based on a stratified random design by dividing the reservoir into five reaches; mainstem upper, middle, and lower, Spokane River Arm, and Sanpoil River Arm, and subdividing reaches into sections that correspond with fish sampling under the LRFEP. The three mainstem reaches, the Spokane Arm, and the Sanpoil Arm are each assigned three sites. Sample sites are then randomly selected by river mile within each reach. Sampling is conducted throughout the reservoir. Sampling is conducted in the thalweg at each site. Macronutrient and chlorophyll samples are composited from the approximate top, middle and bottom of the photic zone. Physiochemical profiles and zooplankton tows are taken from the full water column.

Sampling is conducted at each site monthly from May to October. Exact number of sites may vary. Currently, 15 sites are sampled for 6 months producing a total of 90 sampling events annually.

Start Year

2019

End Year

2020

Study Design

Lake Roosevelt Fisheries Evaluation Program’s Annual Monitoring (1994-043-00) v1.0

Data Repositories

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Documents

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Area of Inference

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AOI Notes

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Sample Sites
These are the unique sites that are participating in this sample design over the time period covered by the design.

Map of Sites

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Sampling Schedule
This section describes which sites are scheduled to be sampled in any given year, and (if applicable) the panel and stratum that the sample site belongs to.

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Relevant acts include the Organic Act, 43 U.S.C. 31 et seq., 1879; Fish and Wildlife Coordination Act, 1934; Fish and Wildlife Act, 1956; Migratory Bird Treaty Act, 1918; Migratory Bird Conservation Act, 1900; Federal Land Policy and Management Act, 1976; Fish and Wildlife Improvement Act, 1978; Endangered Species Act, 1973; Marine Mammal Protection Act, 1972; Great Lakes Fishery Act, 1956; Nonindigenous Aquatic Nuisance Prevention and Control Act, 1990; Water Resources Development Act, 1990; and other authorizations conveyed to the U.S. Geological Survey.

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