Publication Summary

This is the study plan for Audubon Lake's Connection to Upper Crab Creek (Lincoln County): Source Assessment.

Each study conducted by the Washington State Department of Ecology (Ecology) must have an approved Quality Assurance Project Plan. The plan describes the objectives of the study and the procedures to be followed to achieve those objectives. After completion of the study, a final report describing the study results will be posted to the Internet.

Ecology is planning to conduct a Total Maximum Daily Load (TMDL; water cleanup plan) study for the upper Crab Creek watershed in the near future. Audubon Lake lies at the headwaters of the Crab Creek watershed, but there is no documented direct outflow from the lake to the uppermost channels of Crab Creek.

Ecology scheduled this survey to determine if water from snowmelt causes the lake to overflow into surface channels that connect to upper Crab Creek. Photo-documentation and water quality samples will be used to determine if the connection exists and if nutrient loading to the creek is significant.

If a surface water connection between Audubon Lake and Crab Creek exists, the lake and Reardan Wastewater Treatment Plant will be included in the Quality Assurance Project Plan for the Upper Crab Creek TMDL Study.

Link to EIM data for User Study ID jjoy0006