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<br />The demands for water for thermal-electric power
<br />production are projected to grow from 1,724,000
<br />acre-feet in 1965 to 4,878,000 acre-feet in 2020.
<br />Total municipal, domestic, and industrial demand will
<br />grow from the present diversion rate of 3,274,000
<br />acre-feet per year to a 2020 diversion of 10.129,000
<br />acre-feet if all projected demands are to be met.
<br />
<br />INCREASED MUNiCIPAL AND INDUSTRIAL
<br />WATER NEEDS
<br />1980 2000 2020
<br />(Cumukltive Above
<br />Current 1,000 AF)
<br />
<br />Withdrawal Requirements 2,485 4,624 6,855
<br />
<br />At the present time, 18 percent of the municipal, do-
<br />mestic, and industrial total demand is met from ground
<br />water and 82 percent from surface water diversions,
<br />Approximately 60 percent of the municipal, domestic,
<br />and industrial water demands are met by diversions of
<br />flow which in some part have returned to a river from a
<br />previous upstream municipal or industrial use. The
<br />percentages of surface and ground-water utilization are
<br />considered to remain about the same in the future.
<br />Reuse of return flow may increase in the future, but the
<br />current level of technology suggests that, with an
<br />increasing degree of waste treatment, consumptive use of
<br />water may also increase.
<br />Of the present 1,773 municipal water systems, 140
<br />are inadequate when compared with framework planning
<br />criteria adopted for this study. Six of the systems rated
<br />inadequate require additional capacity and 134 have
<br />poor water quality. In addition, improvements would be
<br />desirable for 435 other communities.
<br />
<br />ELECTRIC POWER
<br />
<br />In 1965, electric power installations and production
<br />in the Missouri Basin were 10,2 million kilowatts and
<br />39.0 billion kilowatt-hours, respectively. Installation
<br />capacity exceeded peak basin demands by 2.4 million
<br />\ kilowatts. Enetgy production exceeded the demand by
<br />2.1 billion kilowatt-hours, the net export from the basin.
<br />By the year 2020, basin power demands will increase to
<br />125.9 million kilowatts and 637.0 billion kilowatt-hours.
<br />The power supply and production by 2020 will exceed
<br />that of 1965 by 135.0 million kilowatts and 615.9
<br />billion kilowatt-hours. About 97 percent of the 2020
<br />capacity will be supplied by thermal generation, and the
<br />remainder by hydro-generation, About 41 percent of the
<br />thermal installations in 2020 will be nuclear plants,
<br />which are expected to show a marked increase in
<br />installed capacity after ] 980. Most of these plants will
<br />be located near population centers in the lower portion
<br />of the basin. Many of the remaining thermal installations
<br />
<br />4
<br />
<br />will be fossil-fuel plants, most of which will be located in
<br />the Yellowstone and Western Dakota subbasins because
<br />of the availability of coal and potentially adequate water
<br />su pplies.
<br />Cooling water needs for thermal generation will
<br />increase from a diversion rate of J ,724,000 acre-feet per
<br />year with an associated consumptive use of 36,800
<br />acre-feet in J 965, to a diversion of 4,878,000 acre-feet
<br />per year with an associated consumptive use of 590, J 00
<br />acre-feet by 2020, An estimated J 4 percent of the
<br />increase in consumptive use of water will occur by ] 980
<br />and 56 percent by 2000.
<br />
<br />ELECTRIC POWER PRODUCTION NEEDS
<br />
<br />Feature Unit 1980 2000 2020
<br />
<br />(Cumulative Above Current)
<br />
<br />Installed Capacity
<br />Hydro MW
<br />Thermal MW
<br />
<br />Total MW
<br />
<br />3,267
<br />12,934
<br />16,201
<br />
<br />3,267
<br />62,730
<br />65,997
<br />
<br />3,267
<br />131,790
<br />135,057
<br />
<br />ELECTRIC POWER WATER REQUIREMENTS
<br />
<br />Feature
<br />
<br />Unit
<br />
<br />1980
<br />
<br />2000
<br />
<br />2020
<br />
<br /> (Cumulative Above Current)
<br />Condenser AFI
<br />Cooling year 6,119,800 23,063,000 40,652,300
<br />Streamflow AFI
<br />Diversions year 1,398,400 2,576,500 3,1 54 ,000
<br />Cooling Water AFI
<br />Consumption year 78,700 308,900 553,300
<br />
<br />FISH AND WILDLIFE
<br />
<br />About 97 percent of the entire basin area is used to
<br />some extent by fish or wildlife; however, only 0.3
<br />percent of the area is totally devoted to this use. An
<br />additional 2,7 percent of the basin area serves a primary
<br />use for fish and wildlife,
<br />The basin provides 43,500 miles of streams and 1.4
<br />million acres of ponded waters. Streams and lakes of the
<br />mountainous west and Black Hills provide excellent
<br />trout fishing. Some of these streams, such as the Upper
<br />North Platte, Madison, and Yellowstone rivers, are
<br />known nationally and support a substantial non-resident
<br />demand. Pike and bass and various other warm-water
<br />species provide fishing in the streams and lakes of the
<br />plains area. Put-and-take trout fishing is maintained at a
<br />few favorable locations. Bass and several other warm-
<br />water species are of primary importance in the warm-
<br />water areas of the basin. The basin supporb a smail
<br />commercial fishery, principally at the larger impound-
<br />ments.
<br />The total Missouri Basin demand for sport fishing of
<br />about 28 million fisherman-days is presently less than
<br />the capacity of the habitat that will sustain good fishing,
<br />but demand will exceed that capacity shortly before
<br />J 990. In the Middle Missouri and Lower Missouri,
<br />
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