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10 YELLOWSTONE SUBBASIN 20. Most of the Yellowstone's near-term needs for ex- panded irrigated acreage should be satisfied by carry- ing out the identified elements which address this function. Fundamental to achieving this functional ob- jective is implementation of numerous small rehabilita- tion and development projects, three identified irriga- tion projects on Indian reservations, the Polecat Bench Unit and Riverton Unit Rehabilitation, and other identified projects and studies designed to enhance ir- rigated agriculture, Expansion of Montana and Wyom- ing programs to provide technical and financial assist- ance for water resource development is further rec- ommended. 21. Near- term municipal, industrial and rural water supply needs are adequately addressed by recom- mended plan elements, especially the Bureau of Re- clamation's Billings Water Supply Study and continua- tion of the Farmers Home Administration's rural water systems program, For satisfying industrial water de- mands, the States of Montana and Wyoming and the Bureau of Reclamation should continue their studies of additional water storage sites on Yellowstone tributaries, especially the Bureau's potential Moorhead Dam and Reservoir. 22. The results of the Commission's Yellowstone Level B Study will provide general direction for Fed- eral agency and State planning. There are many obvi- ous requirements for continued attention to develop- ment of specific plans for and implementation in ob- taining adequate soil and water management to al- leviate erosion, conserve soil moisture, and assure sustained optimum production consistent with good resource management. Certain identified, ongoing and proposed State and Federal planning efforts, satisfy near-term needs and are recommended for timely completion. WESTERN DAKOTAS SUBBASIN 23. Plan elements for the Western Dakotas Subbasin will meet its near. and mid-term needs for irrigation and related development. Essential to fulfillment of this objective is the implementation of three Bureau of Reclamation projects--Oahe, Garrison and Pollock-Herreid; two Bureau of Indian Affairs' projects-Crow Creek and Grass Rope; and South Dakota's Shamrock Irrigation Unit and .other similar projects. Also recommended is further study for the Apple Creek and Pine Ridge units and continued State programs designed to enhance irrigated agricul- ture. 24. The subbasin's need for municipal and rural water supplies, an urgent problem in the Western Dakotas, can be partially fulfilled by implementing the plan ele- ments serving this function. Critical municipal water demands necessitate continued study of municipal supply facilities associated with the Oahe and Garri. son irrigation units and timely development of the Dic- kinson unit municipal supply and Farmers Home Administration's selected rural systems. To more fully determine these needs and potential solutions, the Corps of Engineers' Western South Dakota River Basin Study is recommended for a 1979 start. It should be closely coordinated with the results of the ongoing U.S. Department of Agriculture cooperative study In western South Dakota. 25. Plan elements designed to meet the \!rea's grow- ing demands for electric power, complemented by other public and private developments, respond 'adequately if implemented as proposed. Recom- mendations for expansion of hydroelectric power capacity by the Corps of Engineers at Missouri River main stem dams constitute important elements of the plan. Associated with these hydroelectric power de- velopments is the need for implementing several bank stabilization projects along the Missouri River main stem. 26. Several elements in the area of comprehensive water planning which are underway or proposed prior to 1985 are nearly adequate in their response to near-term needs of this type. However, the Commis- sion's subregional analyses for the Little Missouri, Cheyenne and Missouri-Oahe water resource subreg- ions should be programmed within the next decade to coordinate the results of other efforts. A subregional analysis for the White-Bad River Basin is recom- mended before 1985. In addition, interstate negotia- tions and considerations by the Yellowstone Compact Commission to quantify and clarify terms of the Yel- lowstone River Compact are important for on-going water administration within and between the states concerned. EASTERN DAKOTAS SUBBASIN 27. One of the major objectives for the subbasin- expanded irrigation and related development-will be satisfied effectively by the recommended plan elements. Fundamental to fulfilling this objective is implementation of two plan elements in particular-the Oahe and Garrison diversion units. 28. In the area of municipal and rural water supply, plan elements will meet most of the subbasin's needs. Elements address the critical water supply needs of Sioux Falls, Huron, and Mitchell, South Dakota, and other urban and rural residents. Even with full implementation of these elements, some water supply needs may go unmet. State and Fed- eral planning programs focusing on these problems