Stormwater Needs Assessment Program - SNAP

SNAP Reports

The Stormwater Needs Assessment Program (SNAP) is a five-year effort to systematically assess and describe stream and storm drainage conditions in Clark County stream basins. The program assesses watershed resources, identifies stormwater-related issues and opportunities, and recommends specific projects or actions to help protect water quality through improved stormwater management.

Field staff locate infrastructure, such as this abandoned outfall, to update inventories of the county's stormwater system.

The purpose of the program is to identify sites for potential stormwater or streamside restoration projects, update inventories of the county storm sewer system, screen and identify sources of pollution, and note areas of severe erosion.

Stormwater and habitat projects identified by the assessments are evaluated for potential funding and construction by the county's Stormwater Capital Improvement Program.

Ten to fifteen stream basins with existing county roads and storm drainage systems will be assessed each year, allowing the program to complete review of all targeted basins by the end of 2011.

Areas scheduled for stormwater needs assessments in 2008 include: lower Salmon Creek and several tributaries in the lower Salmon Creek watershed, unincorporated areas of lower Burnt Bridge Creek, and a number of subwatersheds throughout the East Fork Lewis River watershed. The Vancouver Lake and Lake River subwatersheds will also be assessed. See the map link below for names of specific subwatersheds scheduled for 2008.

Stormwater Needs Assessment Program Summary (PDF 129K)

Map of watersheds scheduled for assessment 2006-2011 (PDF 184K)

2009 SNAP Scope of Work (PDF 1176K)

2008 SNAP Reports (Note - these are very large files)

2008 SNAP Executive Summaries (PDF 1.6 MB) Big Tree Creek / East Fork Lewis River (RM 26.30)/King Creek (PDF 1.7MB) Breezee Creek / Jenny Creek (PDF 2.5MB) Cedar Creek (East Fork) / Lower Rock Creek (South)/ Upper Rock Creek (South) (PDF 1.2MB) Dean Creek / East Fork Lewis River (RM 07.25) (PDF 3.7MB) East Fork Lewis River (RM 00.00) / East Fork Lewis River (RM 03.19) / McCormick Creek (PDF 5.3MB) Lower Burnt Bridge Creek (PDF 2MB) Rock Creek (North) / East Fork Lewis River (RM 15.75) (PDF 4.8MB) Salmon Creek (RM 03.83) / Cougar Creek (PDF 5.9MB) Appendices (PDF 5.6MB) Vancouver Lake / Lake River (PDF 863K) Yacolt Creek / East Fork Lewis River (RM 21.40) (PDF 1.2MB)

2007 SNAP Reports (Note - these are very large files)

2007 SNAP Executive Summaries (783K) Allen Canyon (PDF 3.1MB) Allen Canyon Stream Geomorphology and Hydrology (PDF 3MB) Curtin Creek (PDF 6.7MB) Curtin Creek Stream Geomorphology and Hydrology (PDF 1.9MB) Gee Creek (PDF 5MB) Gee Creek Stream Geomorphology and Hydrology (PDF 1.7MB) Gibbons Creek (4MB) Lockwood Creek (3.4MB) Mason Creek (2.8MB) Mill Creek - East Fork (2MB) Mill Creek Stream Geomorphology and Hydrology (PDF 4.7MB) Mill Creek (5.4MB)

 

Whipple Creek Reports
2005 Whipple Creek Stream Assessment (PDF - 1.2 MB)
2006 Whipple Creek Technical Memo - Final (PDF - 3 MB)

For more information on the Stormwater Needs Assessment Program:

Rod Swanson, Monitoring Coordinator - (360) 397-6118, ext. 4581 rod.swanson@clark.wa.gov

Jeff Schnabel, Natural Resources Specialist - (360) 397-6118, ext. 4583 jeff.schnabel@clark.wa.gov

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