Wyoming Framework Water Plan - Living Rivers Home Page

6.0 PROJECTIONS
Table 6-8 Projected Municipal and Domestic Water Use
River Basin
High
Scenario
30-Year Projections
Mid
Scenario
Surface Water (ac-ft)
Low
Scenario
Bear 4,700 3,400 2,400
Green 24,500 22,500 21,000
Northeast 0 0 0
Platte 33,500 28,400 26,600
Powder/Tongue 10,000 9,300 8,600
Snake/Salt 0 0 0
Wind/Bighorn 18,000 14,900 14,200
Total 90,700 78,500 72,800
Groundwater (ac-ft)
Bear 1,500 1,100 900
Green 3,700 3,500 3,000
Northeast 15,900 12,700 11,600
Platte 11,200 9,500 8,900
Powder/Tongue 3,300 3,200 2,800
Snake/Salt 18,600 11,500 7,200
Wind/Bighorn 8,500 7,000 6,700
Total 62,700 48,500 41,100
Note: None of the municipal or rural domestic water systems in the Northeast Wyoming River Basin
or in the Snake/Salt River Basin use surface water.
Source: River basin plans and associated technical memoranda.
Under the Mid Scenario, it is projected that in 30 years the state will require about 64,000 acrefeet
of surface water to satisfy the municipal and domestic water demands. The largest basin in terms of
municipal and domestic water demand is the Platte River Basin, and it will annually need to supply over
28,000 acre-feet of consumptive use.
Municipal and domestic groundwater use for the state under the Mid Scenario will require about
48,500 acre-feet to satisfy the projected municipal and domestic water demand. The largest basin in
terms of municipal and domestic consumptive groundwater demand is the Northeast Wyoming River
Basin with a Mid Scenario demand of about 12,700 acre-feet annually in 30 years.
As can be seen from Table 6-8, the state will need to supply a considerably larger amount of both
surface water and groundwater under the High Scenario to satisfy municipal and domestic needs and
demands over the 30-year planning horizon.
6.4 INDUSTRIAL DEMAND PROJECTIONS
Current industrial water uses are described in Chapter 5. This section presents projections of
industrial water needs for the 30-year planning period. These projections provide a basis for gauging the
adequacy of current water supplies in the individual river basin planning areas and the state to meet
potential future needs. Projections were developed for high, mid, and low level growth scenarios.
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