In 1990, the U.S. Congress authorized the U.S. Army Corps of Engineers (Corps) to conduct the Jackson Hole, Wyoming, Environmental Restoration Feasibility Study (Feasibility Study) through the General Investigations Program. The purpose of the study was to investigate the feasibility of restoring fish and wildlife habitat that was lost as a result of construction, operation, and maintenance of the Jackson Hole Flood Control Project levees completed in 1964. The study area is located in and along the Snake River near Jackson, Wyoming, in Teton County See plates 1 and 2 in the Jackson Hole, Wyoming, Environmental Restoration Feasibility Report (Feasibility Report) for vicinity and project location maps. The primary local sponsor is Teton County, Wyoming. The study area borders the National Elk Refuge and is in close proximity to Grand Teton and Yellowstone National Parks.

In 1990, the U.S. Congress authorized the U.S. Army Corps of Engineers (Corps) to conduct the Jackson Hole, Wyoming, Environmental Restoration Feasibility Study (Feasibility Study) through the General Investigations Program. The purpose of the study was to investigate the feasibility of restoring fish and wildlife habitat that was lost as a result of construction, operation, and maintenance of the Jackson Hole Flood Control Project levees completed in 1964. The study area is located in and along the Snake River near Jackson, Wyoming, in Teton County See plates 1 and 2 in the Jackson Hole, Wyoming, Environmental Restoration Feasibility Report (Feasibility Report) for vicinity and project location maps. The primary local sponsor is Teton County, Wyoming. The study area borders the National Elk Refuge and is in close proximity to Grand Teton and Yellowstone National Parks.

The Jackson Hole, Wyoming, Environmental Restoration Feasibility Report Draft April 200015 the draft product of a 4-year, cost sharing feasibility study conducted by the U.S. Army Corps of Engineers, Walla Walla District, in partnership with Teton County, Wyoming, and Teton Conservation District, Wyoming. The report recommends an environmental restoration project on a 22-mile reach of the upper Snake River from Grand Teton National Park to South Park Elk Feedgrounds. The goal of the recommended project is to restore diverse and sustainable aquatic, wetland, riverside, and terrestrial habitats within the study area. If you would like additional of the final version of the report copies (free of charge until no longer available), please contact, Mr. Stan Heller, Project Manager, U.S. Army Corps of Engineers, 201 North Third Avenue, Walla Walla, Washington 99362 (or send e-mail to: Stanley.G.Hellernww01.usace. army.mil.or telephone at 509-527-7258). The EA (Appendix H) of the report is also available at website: http://www.nwwusace.army.mil/reports/jackson.

The Jackson Hole, Wyoming, Environmental Restoration Feasibility Report Draft April 2000 is the draft product of a 4-year, cost sharing feasibility study conducted by the U.S. Army Corps of Engineers, Walla Walla District, in partnership with Teton County, Wyoming, and Teton Conservation District, Wyoming. The report recommends an environmental restoration project on a 22-mile reach of the upper Snake River from Grand Teton National Park to South Park Elk Feedgrounds. The goal of the recommended project is to restore diverse and sustainable aquatic, wetland, riverside, and terrestrial habitats within the study area. If you would like additional copies of the final version of the report (free of charge until no longer available), please contact, Mr. Stan Heller, Project Manager, U.S. Army Corps of Engineers, 201 North Third Avenue, Walla Walla, Washington 99362 (or send e-mail to: Stanley.G.Hellernww01 .usace. army.mil or telephone at 509-527-7258). The EA (Appendix H) of the report is also available at website: http://www. nwwusace.army. mil/reports/jackson.

In the early 1990's concerns were raised by residence in the Westbank area. At that time, there was basically no documentation of ground water elevations in the area. The Wyoming State Engineer's Office and the Teton County Commission initiated the Observation Well System north of f Highway 22 and west of the Snake River channel which included thirty (30) wells. Additionally, the Teton County Resource District through a co-op arrangement with the USGS installed a surface water gauging system. The Wyoming State Engineer's Office Surface Water Division installed a more expanded gauging system that monitored additional stream sites as well an irrigation diversions. In 1997, the Wyoming State Engineer's Office Ground Water Division in co-operation with the Teton County Commission installed an additional twelve (12) observation wells south of Hwy. 22 and west of the Snake River channel. This completed the system as it exist today with the exception of the eight (8) reference wells located along the east bank of the Snake River channel, bringing the total number of wells to fifty (50). The purpose of this appendix is to provide technical support in the area of ground water elevations within the study area that could be affected by restoration measures. The Monitoring System targets the area down gradient of Study Sites 10, 9, 4, and 1 on the Westbank of the Snake River.