Washington Master Sample

The sampling design described on page 12 of the Quality Assurance Monitoring Plan makes use of a common set of random sites. These sites can be used for comparable, complementary monitoring on non-federal lands among separate monitoring organizations and across geographic scales. The Plan’s master site list is available below in MS-Excel spreadsheet format, parsed among separate zip files for each of the 62 Water Resource Inventory Areas (WRIAs) of Washington. The list was generated with help from the U.S. EPA, Corvallis, Oregon, who used a Generalized Random Tessellation Stratified (GRTS) survey design for linear resources. The zip file linked below for each WRIA also contains WRIA-specific documentation in MS-Word format.

For all surveys, users should evaluate the list in order of SITEID. Each site should be evaluated to determine its size class and its target class before moving up the list. Stop when enough sites are available to satisfy your study objectives. Be sure to check around to see if others are monitoring with the same site list for your WRIA. You may be able to save expenses by sharing data and not repeating efforts. In order to determine the site weight (length of stream that it represents in the survey) map lengths will need to be measured for each stream subpopulation (e.g. Strahler order within a WRIA).

Puget Sound SRR

WRIA 01 - Nooksack
WRIA 02 - San Juan

WRIA 03 - Lower Skagit/Samish

WRIA 04 - Upper Skagit

WRIA 05 - Stillaguamish

WRIA 06 - Island

WRIA 07 - Snohomish

WRIA 08 - Cedar/Sammamish

WRIA 09 - Duwamish/Green

WRIA 10 - Puyallup/White

WRIA 11 - Nisqually

WRIA 12 - Chambers/Clover

WRIA 13 - Deschutes

WRIA 14 - Kennedy/Goldsborough

WRIA 15 - Kitsap

WRIA 16 - Skokomish/Dosewallips

WRIA 17 - Quilcene/Snow

WRIA 18 - Elwah/Dungeness

Washington Coastal & Lake Ozette SRRs

WRIA 19 - Lyre/Hoko

WRIA 20 - Solduc

WRIA 21 - Queets/Quinault

WRIA 22 - Lower Chehalis

WRIA 23 - Upper Chehalis

WRIA 24 - Willapa

Lower Columbia SRR

WRIA 25 - Grays/Elochoman

WRIA 26 - Cowlitz

WRIA 27 - Lewis

WRIA 28 - Salmon/Washougal

WRIA 29 - Wind/White Salmon

Mid-Columbia SRR

WRIA 30 - Klickitat

WRIA 31 - Rock/Glade

WRIA 37 - Lower Yakima

WRIA 38 - Naches

WRIA 39 - Upper Yakima

Upper Columbia SRR

WRIA 44 - Moses Coulee

WRIA 45 - Wenatchee

WRIA 46 - Entiat

WRIA 48 - Methow

WRIA 49 - Okanogan

WRIA 50 - Foster

Northeast Washington SRR

WRIA 53 - Lower Lake Roosevelt

WRIA 54 - Lower Spokane

WRIA 58 - Middle Lake Roosevelt

WRIA 60 - Kettle

WRIA 61 - Upper Lake Roosevelt

WRIA 62 - Pend Oreille

Snake River SRR

WRIA 32 - Walla Walla

WRIA 33 - Lower Snake

WRIA 35 - Middle Snake

Unlisted Washington

WRIA 34 - Palouse

WRIA 36 - Esquatzel Coulee

WRIA 40 - Alkaki/Squilchuck

WRIA 41 - Lower Crab

WRIA 42 - Grand Coulee

WRIA 43 - Upper Crab/Wilson

WRIA 47 - Chelan

WRIA 51 - Nespelem

WRIA 52 - Sanpoil

WRIA 55 - Little Spokane

WRIA 56 - Hangman

WRIA 57 - Middle Spokane

WRIA 59 - Colville

Questions?

If questions, contact Glenn Merritt, (360) 407-6777, gmer461@ecy.wa.gov.