Okanogan Watershed Plan

The Okanogan Conservation District was the lead entity for the development of the Okanogan Watershed Plan as appointed by the three Initiating Governments. The Initiating Governments by statute (RCW 90.82) were Okanogan County, City of Omak, and the Oroville-Tonasket Irrigation District.

The District coordinated the activities of the Planning Unit which was comprised of local citizens who are irrigators, business owners, recreationalists, environmentalists, and others. The Planning Unit was tasked with developing a series of recommendations on how policy and decision makers should manage water in the Okanogan River Watershed in Washington State.

The Planning Unit began the process in 2004. The Okanogan County Commissioners approved the plan as presented in April 2010.

Due to extremely tight budgets hard copies of the plan will only be available at public libraries and the Okanogan Conservation District office. However, you may download, read, or print sections of the plan by clicking on appropriate links below. Every chapter and appendix submitted to the Commissioners as part of the plan are listed below for your review.

If you have questions about the project please call Bob Clark at the District office at (509) 422-0855 ext. 122.

Okanogan Watershed Plan

• Table of Contents
• Acknowledgments
• Glossary
• Executive Summary
• Chapter One: Planning Process
• Chapter Two: Overview
• Chapter Three: Recommendations
• Chapter Four: Water Balance
• References

Maps

• Main Watershed Map
• Temperature Map
• Northeast Watersheds
• East Central Watersheds
• Southeast Watersheds
• Southwest Watersheds
• Salmon and Johnson Creeks with Brown Lake Watersheds
• Spectacle, Aeneas, North Fork Pine Creek Watersheds
• Sinlahekin, Toats Coulee, and Wanacut Lake Watersheds
• Smilkameen River
• Pasayten and Ashnola Rivers
• South Okanogan River Interfluve
• Middle Okanogan River Interfluve
• North Okanogan River Interfluve

Assessments

• Technical Assessment
• Okanogan River Erosion Survey

Erosion Treatment Diagrams

• Cattle Damage
• Fine Silt Sharp Bends
• Fine Silt Moderate Bends
• Fine Silt Broad Bends
• Gravel All Bends
• Gravel All Bends Scour Limited

Aerial Maps - Okanogan River Erosion Study (North to South)

• Map 1
• Map 2
• Map 3
• Map 4
• Map 5
• Map 6
• Map 7
• Map 8
• Map 9
• Map 10
• Map 11
• Map 12
• Map 13
• Map 14
• Map 15
• Map 16
• Map 17
• Map 18
• Map 19
• Map 20
• Map 21
• Map 22
• Map 23
• Map 24

Final Assessments

• Water Storage Assessment
• Revised Water Budget
• Water Balance
• USGS Ground and Surface Water Interactions
• Water Quality Impairments