Watershed Management Plan - Mason County

WRIA 16
Watershed Management Plan
Table of Contents
1. Introduction and Background............................................. 3
1.1. Watershed Planning in WRIA 16......................................................3
1.2. WRIA 16 Planning Unit.....................................................................4
1.3. Document Organization ....................................................................8
2. WRIA 16: State of the Watershed........................................ 9
2.1. Water Quantity...................................................................................10
2.2. Water Quality .....................................................................................20
2.3. Habitat.................................................................................................27
2.4. Instream Flow....................................................................................32
3. Recommendations: Water Quantity................................. 34
3.1. Data Needs.........................................................................................34
3.2. Water Conservation ..........................................................................35
3.3. Water Supply and Use ......................................................................35
4. Recommendations: Water Quality ................................... 37
4.1. Data Needs.........................................................................................38
4.2. On-site Septic Systems .....................................................................39
4.3. Animal Waste .....................................................................................40
4.4. Stormwater .........................................................................................40
4.5. Other ...................................................................................................41
5. Recommendations: Habitat ............................................. 42
6. Other Recommendations .................................................. 44
6.1. Hood Canal ........................................................................................44
6.2. Funding ...............................................................................................48
6.3. Education and Outreach ..................................................................48
6.4. Enforcement ......................................................................................49
6.5. Support for Ongoing Activities.......................................................50
6.6. Information Gathering .....................................................................51
6.7. Plan Implementation.........................................................................52
Final Plan for County Adoption – May 11, 2006 page 1