Summary:  The Tatwin Wildlife Area was established in September 1998 by the Confederated Tribes of the Umatilla Indian Reservation (CTUIR) pursuant to the Columbia Basin Fish and Wildlife Program, and the Washington Interim Wildlife Mitigation Agreement (BPA et al., 1993).  The purpose of the project is to protect and enhance fish and wildlife resources, and mitigate the impacts of development of the John Day and McNary hydroelectric dams.  This contract provides funding to the CTUIR to operate and manage the Tatwin Wildlife Area to maintain, protect, and enhance fish and wildlife habitat.  

Background:  Tatwin is located in southeastern Washington approximately 8 miles south of Dayton [Township 7 North, Range 39 East, all or portions of Sections 4, 5, 6, 7, 8, and 9; and Township 8 North, Range 39 East, all or portions of Sections 4, 5, 8, 9, 17, 19, 20, 21, 27, 28, 29, 31, 32, 33, and 34, and  Township 9 North, Range 39 East. portions of Sections 28, 32, and 33, Willamette Meridian, Latitude 46.12.30, Longitude 117.57.30].   The area was selected by the CTUIR and BPA as a regional mitigation project because of its large size, location in the upper headwaters of the Touchet River watershed, and its ability to provide anadromous fish, resident fish, and wildlife benefits in a holistic watershed management context.  In 2009-2010, the Tribe and BPA made significant additional land purchases that added approximately 2400 acres to the pre-2009 Tatwin Wildlife Area boundary.  

Status:  The now nearly 11,000-acre Wildlife project area comprises a significant portion of the upper South Fork Touchet River drainage in the Walla Walla River subbasin, adjacent to the Umatilla National Forest.  The project includes approximately 8,300 acres of upland and riparian coniferous forest, 2,500 acres of native and native-like grasslands, and 200 acres of deciduous riparian habitat.  The Wildlife Area also provides 10 miles of headwater spawning and rearing habitat for Threatened summer steelhead, bull trout, and resident trout.  Currently, based on HEP surveys conducted in 2012-2013 the project provides 8,417 baseline Habitat Units (HU's) on the original wildlife area (~8500 acres) and 3,571 HUs on the ~2400 acres acquired after 2009.  Habitat Units were measured for seven target mitigation species.  

Purpose: This contract continues support for CTUIR efforts to help the Bonneville Power Administration meet Columbia River Basin mitigation obligations and objectives within the Ceded Lands of the Confederated Tribes of the Umatilla Indian Reservation (CTUIR).  Management actions undertaken as part of this contract are designed to promote watershed health, support recovery of ESA fish species, and nurture self-sustaining ecosystem features and habitat function.    

Ongoing: This SOW reflects a continuation of prior management activities on the Wildlife Area, and provides direction for additional actions planned for implementation in subsequent contract periods. Contract activities include project planning and implementation management; ongoing site operations and maintenance; and limited assessment that is specific to evaluation of management strategies on the wildlife area and not part of a larger basin-wide data-gathering or monitoring effort. Specific contract support in the current performance period encompasses:
•    Administration and operation of the wildlife area;
•    Maintenance of existing fence lines to prevent cattle trespass on Robinette Mountain and Jasper Mountain.
•    Controlling bark beetle outbreaks, and promoting healthy stands of timbered habitat through ongoing forest thinning, burning, and other strategies;
•    Continuing a weed management program which includes limited herbicide treatment along roads and ridgelines;  
•    Continued onsite monitoring of the temperature of the South Fork Touchet River, and Griffin Forks, to determine the status and trend of the river;

Emphases (FY 2026 and 2027): Planning and implementation management activities in the current contract period also begin or continue the following tasks and initiatives:
•    Clearing and thinning of woody brush and other slope-side vegetation to improve fire-proofing of the Wildlife Area and Field Office location.
The large wood loading project planned for the South Touchet in 2026-2027 will be constructed through the 1996-046-01 WALLA WALLA BASIN FISH HABITAT ENHANCEMENT project.