Thurston County Development Services

You are currently view the Critical Areas Regulations' Best Available Science page

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Best Available Science

The state requirement that the County include best available science in developing regulations for Critical Areas poses new challenges and constraints for the Board. The state’s Critical Areas Assistance Handbook, 11/2003 states:

“While science is not the sole criterion to be used in developing critical areas regulations, …science plays a central role in delineating critical areas, identifying their functions and values, and recommending strategies to protect the functions and values.  Local governments must substantively consider the best available science when adopting regulations to designate or protect critical areas.”

The adopted policies and regulations must protect the functions and values of critical areas.

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Drafts of the Best Available Science related to the various critical area categories is available in Adobe Acrobat format.

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Critical Aquifer Recharge Areas  (PDF 22Mb)

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Geologic Hazard Areas  (PDF 401Kb, posted 7/26/05)

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Flooding and Channel Migration Hazards  (PDF 888Kb, posted 7/26/05)

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Important Habitats and Species  (PDF 861Kb, posted 7/26/05)

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Wetlands

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Freshwater Wetlands in Washington Vol 1: A synthesis of the Science - Draft 2003
(PDF 3.7Mb)

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Best Available Science - Wetlands Draft  (PDF 1.8Mb)

Thurston County Development Services
2000 Lakeridge Drive SW
Olympia, WA 98502-6045 USA.
(360) 786-5490 TDD line: (360) 754-2933

Email: permit@co.thurston.wa.us