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Mr. Pinney described the nature and scope of the current study with the Soi I Conservation Service, which is limited to the,Arkansas River Drainage Basin in Kansas. One of the major por'tions of this study is the assessment of the watershed potential across the area. This phase of the study is being done by the Soil Conservation Service. A second phase of the study is being done by the Economic Research Service, under the direction of Mr. Robert Fletcher at Oklahoma State University. Mr. Fletcher is us ing a general ized analytica.1 model developed to . analyze and project agricultural production patterns by land resource area in the Missouri River Basin. The model was reprogrammed for the State of Kansas. Projected production patterns are based on the capabi i'hy of the soi I. Projections of crop yields and feeding efficiencies were based on careful consideration of the development and appl ication of improved production, technology, continued appl ication and improvement of soil and water conservation practices, and intensification of production practices. The projections were made for Kansas by Dr. Orville W. Bidwell, Kansas State University, and Charles W. Nauheim, U.S. Depart- ment of Agriculture. The work was coordinated by an ad hoc committee of the Great Plains Agricultural Council. The minimum cost linear programming model is a tool for simulating decisions with respect to land use when certain levels of demand for food and fiber are assumed. In the operation of the model, the cropping pattern is selected from possible cropping alternatives that minimize the cost of achieving the level of production with the restraints 1 ikely to confront agriculture. All analysis is done on the basis of land resource areas and the associated resource groups. The principal purpose of this model is to project patterns of use at given levels of production which might be expected in future time periods. One study will allocate production based' on an allocation of the national food and fiber requirements developed by the Economic Research Service for the national. river basin framework studies. A second will reduce the yields developed by Dr. Bidwell to test the sensitivity of the linear program model. A th.ird one will incorporate the irrigation projections developed by the Water Resources Board in its report. "Irrigation in Kansas.". Th~ fourth study removes most constraints on production to see what capability'the state h'as for production. Mr. Fletcher has been coordinating his efforts with Dr. Emerson. Mr. Russell Herpich outlines the historical development of irrigation, extension programs, the effect of the :programs, .and finally possibfe changes he saw in management and technology in the future. He stated that in the mid-1800's irrigation began by diverting water from the Republican, the Arkansas, and the Smoky Hill rivers. In the late 1800's, pumping from wells was initiated. Usu~lly wind power was 4. "