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Show No. 3. The Missouri Table Page 1. Estimated electric power demand, 1970.....176 2. Existing hydroelectric power developments. ... 177 3. Federal hydroelectric developments-under con- struction, authorized, and recommended or con- templated.................178 4. Tentative list of hydroelectric power possibilities other than at projects under construction, author- ized, and recommended or contemplated . . . . 179 5. Analyses common to numerous North and South Dakota municipal water supplies from ground water sources...............185 6. Tentative allocation of costs, Corps of Engineers projects, October 1950. . ... . . . . . . . 189 7. Repayment history of older Bureau of Reclamation projects in the Missouri Basin.........190 8. Degree of land deterioration..........208 9. Federal and State-owned lands, by areas.....208 10. Estimated approximate land use conversion needed.................209 11. Estimated approximate area in land-capability classes, by land use.............209 12. Progress and accomplishments in soil conservation districts and other program areas, with Soil Con- servation Service assistance, to 1950 ......210 13. Sedimentation rates as developed from reservoir surveys..................218 14. Lands lost by Indians to specified Federal projects, and Indian lands benefited..........235 15. Population changes, 1920-50.........263 Table Page 8. The lower Colorado River Basin's long-run average water supply and distribution thereof among the States of the basin, according to views expressed by California and Arizona......392 9. Summary of survey of land holdings larger than 160 irrigable acres per ownership on Bureau of Reclamation projects in the Colorado River Basin receiving water in 1946........394 10. Approximate acreage of public lands by major agencies in Colorado Basin..........408 11. Precipitation and runoff for forest and nonforest areas in the Colorado Basin..........418 12. Annual water yield..............418 13. Annual water and silt volumes measured on Colo- rado River................418 14. Percentage of farms by types according to source of income (1939) in upper basin States.....419 15. Federal grazing district lands in Colorado Basin States (1948)...............420 16. Cattle and sheep numbers in Colorado River Basin States (average 1924-41)...........424 17. Source of forage in western Colorado......424 18. Erosion in Colorado River lands........431 19. Colorado River Storage Project facilities, as pro- posed by the Bureau of Reclamation......459 No. 6. The Connecticut 1. Present hydroelectric power facilities.......475 2. Undeveloped hydroelectric power possibilities . . 478 No. 4. The Rio Grande 1. Existing and potential hydroelectric develop- ments ..................309 2. Multiple-purpose aspects of Federal projects . . . 312 3. Area and ownership of land in Rio Grande Basin in New Mexico above Elephant Butte, 1938 . . 328 No. 7. The Alabama-Coosa 1. Existing hydroelectric power development .... 534 2. Undeveloped hydroelectric power possibilities . . 535 3. Residential sales, average annual use, average price per kilowatt-hour, average annual bill, Alabama, TVA power market area, United States,! 940-49.. 546 No. 5. The Colorado 1. Area of the Colorado River Basin by States . . . . 357 2. Hydroelectric power developments-existing, under constx-uction, and authorized.........370 3. Undeveloped hydroelectric power possibilities other than at projects under construction and author- ized ...................372 4. Existing and planned potential multiple-purpose projects..................379 5. Existing water resources development projects . . 380 6. Potential water resources development projects . . 381 7. Existing and potential fish and wildlife water re- sources development projects........386 No. 8. The Potomac 1. Existing and undeveloped hydroelectric power projects..................587 No. 9. The Ohio 1. Metropolitan areas in Ohio River Basin.....628 2. Per capita income payments in Ohio Basin States . 629 3. Percentage of income payments from major sources in Ohio Basin States, 1949..........629 4. Value added by manufacture in Ohio Basin States...................630 XIV |