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I I I I I I I I I I I I I I I I I I I 0rl~ 1')'):) :'~" 'L'.i....1 oJ would be necessary to install wells to recapture the addi- tional water placed in the underlying formations and a system to distribute the water to irrigated areas, generally at some distance. Acquisition of water rights to the water conserved would be necessary. Another option would be to acquire the water rights of the overlying noncultivated lands, particularly those for marginal or otherwise low productive lands. Acqui red ri ghts to the water al ready in storage in the underlying Ogallala, and the development of that water as a source of supply for irrigated lands by installation of wells and conveyance facilities to nearby cultivated areas could substantially increase available irrigation water supplies. 4) Reallocation of Ground Water Resources from Marginal lands - in each of the six states there are large areas of non-prime lands, underlain by ground water in the Ogallala and associated aquifers, much of which is classified as nonirrigable, which wquld be of marginal productivity if placed under irrigation, as compared to currently irri- gated lands and presently noni rrigated prime lands. The table on the following page presents a summary of relevant land classification and use data for the High Plains area in each state. Reallocation of the ground water resources underlying those presently nonirrigated lands of low irrigated agricultural productivity potential to the presently irrigated lands (or currently nonirrigated prime lands) could offer significant overall economic and water supply advantages by increasing the duration of availability of irrigation water supply for these lands. Carefully designed well fields and conveyance 13