Update: Understanding Tumalo Creek Flows &
Deschutes Water Alliance Sub-basin Plans
September 21, 2011
City of Bend, Oregon 1 City Website – Project Information www.ci.bend.or.us
City of Bend, Oregon 2 How Tumalo Creek Works 2009 Council Presentation
City of Bend, Oregon 3 Bend-USFS Municipal Watershed
City of Bend, Oregon 4 Existing Water Diversion
UPPER DIVERSION NOT PART OF PROJECT
Spring flow splits here
Fixed flow here
City of Bend, Oregon 5 Where the spring flow splits
City of Bend, Oregon 6 Flow to Middle Fork
City of Bend, Oregon 7 Flow to Middle Fork of Tumalo Ck
City of Bend, Oregon 8 Flow to Middle Fork
City of Bend, Oregon 9 Flow to Bridge Creek
City of Bend, Oregon 10 Diversion canal into Bridge Creek
City of Bend, Oregon 11 How Water Flows
Bridge Creek Falls City of Bend, Oregon 12 How Water Flows
Bridge Creek Falls City of Bend, Oregon 13 Bridge Creek Falls Tumalo Creek Falls
City of Bend, Oregon 14 History of Bridge Creek Trail
City of Bend, Oregon 15 Tumalo Creek Flows
Tumalo Creek 1923 - 1987 Deschutes County, Oregon Hydrologic Unit Code 17070301 Latitude 44°05'16", Longitude 121°22'18" NAD27
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City of Bend, Oregon 16 Bridge Creek Flows
City of Bend, Oregon 17 Tumalo Creek Water Rights
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0 Tumalo City of City of Senior Junior State Irrigation Bend Bend Flow Flow Instream District Senior (junior Protected Protected Water Rights right) Instream Instream Right (Project) (August) Series1 211 21 15 7.8 7.8 32
City of Bend, Oregon 18 Water Distributed by Seniority
City of Bend, Oregon 19 Tumalo Creek Blue Whale
City of Bend, Oregon 20 100 Years of History
• Bend Surface Water Project does not alter existing flows at upper diversion in any way
• Creek flow and senior water rights control restoration opportunities – biggest limiting factor is low flow in “Reach B”
• Plans exists for restoring Reach B, additional scenarios being developed (see Bulletin Article from 2007, DWA report). City of Bend, Oregon 21 • Questions / Discussion
City of Bend, Oregon 22
Deschutes Water Alliance (DWA) Update Subbasin Scenarios
September 21, 2011
City of Bend, Oregon 23 Preliminary Sub-basin Work Groups
• Whychus Creek • Tumalo Creek • Deschutes River (above Pelton) • Crooked River
“Blue Whales by Sub-basin”
City of Bend, Oregon 24 Next Steps
• DWA Subbasin Workgroups begin to meet now through October
• Next Full DWA Meeting November 1, 2011
• Refinement of DWA Water Supply Scenarios – Determine regional priorities – Determine funding strategies
City of Bend, Oregon 25 Aylward / DWA Tumalo Goals
• Flow restoration goals identified in 2006 DWA Study on Instream Flows • http://www.deschutesriver.org/CEDocuments/Downloads_GetFile.aspx?id=195614&fd=0 • Bulletin Article 2007 – flow restoration scenario, DRC, DWA • More flow restoration scenarios exist with more potential for environmental benefit – Will not incur pumping / energy use – Those of benefit will share costs
City of Bend, Oregon 26 Achievable Flow Restoration
City of Bend, Oregon 27 Flow Restoration Scenarios - DWA
Piping Project
Source Swaps
TID Dual Source
City of Bend, Oregon 28 Continued DWA Solutions
City of Bend, Oregon 29 DWA: Proven Results
City of Bend, Oregon 30 • Questions / Discussion
City of Bend, Oregon 31