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Show 9. Reimbursability of allocations for fish and wildlife and recreation. E. Interrelations Among Proposed Programs, and Their Relation to Existing Developments 1. Adaptation of projects and programs to exist- ing improvements and programs. 2. Proper rate of construction of flood control facilities. 3. Integration of mosquito control measures with other elements of water programs. 4. Industrial development in relation to the economy and the water resources program. 5. Conflicts of fishery, wildlife, and recreation interests with other water developments. 6. Planning and construction in areas previously dedicated to scenic values. 7. Uniform policy on providing recreation facil- ities in reservoir areas. 8. Problems of international coordination. 9. Uniform reporting procedures on progress. A. The Character of Development 1. Deficiencies in Analyses and Data Required for Planned Development The Problem Major deficiencies in data required for planning and programing water developments in the basin. The Situation All available data have been used in preparing present plans for the conservation and use of the water resources of the Missouri Basin. Deficiencies in planning have been met in part by translations of data from other areas, by making sample studies and statistical checks, and by using judgment. As a result it has been possible to prepare generalized over-all plans and definite plans for some specific projects. It has also resulted in expansion of data collection in areas of greatest concern and in ac- tivities where information was weak. Most of the available information on the water resources has been obtained in the past 25 years, although records for certain hydrologic elements are available for longer periods.1 Statistical in- terpolations of partial or shiort-time records have made possible an extension in the use of available data both for a longer time and into areas where data were meager. Results of various studies have given a considerable degree of confidence in such matters as frequencies and extremes of precipita- tion and runoff. In addition, observations at a number of key hydrologic stations encompassed both the great drought of tlie 1930's and the wet period of the 1940's. The la.tter included a variety of unusual conditions like bxeavy snowfall, intense rains, and major storms. Accretion of data in the 5-year period from 1944 to 1949 greatly changed plans both as to the num- ber of reservoirs and their storage capacities. For example, in the 1944 irrigation plan for the basin, 86 reservoirs were contemplated; the number now has grown to 117. The original storage capacity has simultaneously increased from 20,764,000 to 26,391,000 acre-feet. New acreage to be irrigated rose from 4,766,000 acres to 5,302,000, and sup- plemental irrigation from 520,000 acres to 891,000 acres. As additional data fcecome known, other major changes may be necessary. Increments of data may also have indirect as well as direct effects on water resources planning. For instance, the Bureau of Reclamation notes that the additional storage provided in its changed plan resulting from new data may materially affect the operating features of the downstream reservoir program of the Army Engineers, by reducing the amount of storage needed for flood control. This will also affect power production and perhaps the plans for navigation as well. A survey of the needs for hydrologic data was undertaken in this basin by the Hydrologic Sub- committee of the Federal Inter-Agency River Basin Committee. It revealed that some types of hydro- logic data for various parts of the basin and for particular phases were adequate for general plan- ning purposes in the lower third of the basin, but were decidedly deficient in the headwater tribu- taries. It also disclosed that data analysis and com- pilation had not kept pace with collection. A greatly expanded program to meet these needs was prepared. Precipitation.-A reasonably adequate network of precipitation stations is now available. It is much more complete in the lower half of the basin 1 The stream gage at Yankton, S. Dak., has a 50-year record, regarded by the Geological Survey as "fair" (ap- proximately 20 percent margin of error). 194 |
