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I I I I I I I I I I I I I I I I I I I r"I'~ r: ~ ',J J "\..: ._:... ".- ',' ,) alternative to be considered in meeting long-term water supply needs in their respective states. A potential diversion of about 200,000 acre-feet per year from the South Platte River for use in the High Plains Region of northeastern Colorado, the Trans-County Project, has been considered and is undergoing further study by Colorado agencies but was not included by the state in its research for this Study. Texas had included in its state plan of 1969 an importation to the High Plains of water diverted from the river basins in northeast Texas supplemented by diversion from the Mississippi River in Loui si ana. However, based on subsequent studi es, Texas researchers deter- mined that current projections of long-term demands for the water in the eastern basins for inbasin uses and for municipal and industrial purposes in the nearby river basins of Central Texas do not leave sufficient remaining surpluses available for diversion to the High Plains Region. As a result of studies for the Kansas State Water Plan, the State of Kansas had previously determined that there was no surplus surface water available in eastern and central Kansas for transfer to western Kansas. There is very little, if any, water available in New Mexico that might be transferred to the High Plains of eastern New Mexico. Management Strategy Four - State Plans Nebraska Three conceptual schemes for intrastate interbasin diversion and trans- fers of surpl us water from the Niobrara and/or Loup River basins to the Platte, Republican, and Big and Little Blue River basins were developed and evaluated by the Nebraska Natural Resources Commission. These were modifica- tions of schemes originally set forth in the Report on the Nebraska Framework Study, May 1971. Each scheme contains a feature that would transfer water from Lake McConaughy on the North Platte River to the upper part of the Republ i can River basi n. Water di verted from Lake McConaughy woul d be re- placed by water transferred southerly from the Niobrara or Loup River basins. The physical elements of these three single purpose schemes, together with areas that would be served with irrigation water are shown conceptually on Figures 4-1, 4-2, and 4-3. 25