Implement Actions to Reduce Water Temperatures in the

Implement Actions to Reduce Water Temperatures in the Teanaway Basin BPA FY 2002 Columbia Plateau Province Proposal Project ID # 25021

Introduction The Teanaway River has a history of elevated stream temperatures n This project will mitigate some of the causes of high water temperatures n

Maximum, Mean and Hourly Water Temperatures for the North Fork Teanaway River (7/1/98 - 10/7/98)

Elevated Water Temperatures are Harmful to Salmonids Decreased oxygen supply n Disrupted metabolism n Increased susceptibility to toxins n Increased vulnerability to disease n Reduced ability to avoid predators n Reduced food supply n

“Threatened” Teanaway Salmonids n In 1999, certain Teanaway salmonids were listed as “threatened” under the Endangered Species Act: – Bull Trout – Steelhead

How Can We Reduce Teanaway Water Temperatures? 1) Restore riparian vegetation -increase shade and stabilize banks 2) Increase instream flows -- greater water volume stays cooler 3) Reduce sediment inputs -- restore more natural width/depth ratios, deeper water stays cooler

Objective 1: Increase irrigation efficiency Task A: Move points of diversion on two properties in lower Teanaway Basin n Task B: Upgrade irrigation equipment from rill to sprinkler n Benefits: n – Save ~2. 25 cfs of instream water – Reduce ag. runoff from rill irrigation n Cost: $130, 300 - FY 02, $18, 000 - FY 03

Objective 2: Stabilize streambanks Task A: Install rock barbs at three sites in lower Teanaway River n Benefits: n – Reduce sediment input to river, restore width/depth ratio – Prevent annual loss of ~400 cubic yards of bank material per site n Cost: $12, 000 - FY 02, $118, 525 - FY 03/04

Objective 3: Restore riparian vegetation Task A: Plant native trees in riparian areas n Benefits: n – Increase stream side shading – Increase bank stability n Cost: $15, 700 - FY 02

Objective 4: Upgrade Stafford Creek Road Task A: Upgrade stream crossings n Task B: Repair portions of road, narrow road to widen riparian buffer n Benefits: n – Reduce sediment input to river, restoring width/depth ratio – Wider riparian buffer increases shading n Cost: $96, 500 - FY 02

Objective 5: Replace culvert at Jack Creek Task A: Replace inadequate culvert (currently eroding and perched ) n Benefits: n – Reduce sediment input to river, restoring width/depth ratio – Removal of fish passage barrier will allow use of Jack Creek habitat by smolts from adjacent acclimation facility n Cost: $15, 000 - FY 02, $84, 000 - FY 03

Objective 6: Monitor project effectiveness Tasks A-D: Monitor effectiveness of irrigation improvements, bank stabilization, tree planting and road improvements/culvert replacements. n Benefits: n – Findings will direct modifications in project activities to make best use of funding – Findings will help plan future activities n Cost: $7, 000 - FY 02, $12, 000 - FY 03/04

Objective 7: Additional monitoring Task A: Collect water temperature and sediment data in Teanaway Basin n Task B: Determine sediment loading and identify primary sediment sources n Benefits: n – Provide baseline data for future studies – Identify additional causes of temperature impairment, so they can be corrected n Cost: $61, 500 - FY 02, $81, 500 - FY 03/04

Our Subcontractors are Our Local Partners n Subcontractors are: – Kittitas County Conservation District – Natural Resources Conservation Service – Kittitas County – US Forest Service (Cle Elum RD) n All subcontractors are members of the Teanaway Temperature TMDL workgroup

In Closing. . . The Teanaway River has high summer water temperatures, harmful to salmonids n High water temperatures can be corrected by n – More riparian vegetation – Increased bank stability – Reduced sediment input n This project uses the above methods to reduce water temperatures