Rafting on Snake River Lake Marie, Snowy Mountains Wyoming Wind River Range picture

STATEWIDE FRAMEWORK PLAN: Updated Data Tables
UPDATED: Data Table

Table 5-5 Estimated Average Annual Irrigation Water Supply-Limited Consumptive Use (Depletions)
River Basin 1973 Total
CU
Current Total
CU
Active
Irrigated
Lands
Unit CU Total CU
Wet Normal Dry
ac-ft ac-ft acres ac-ft/ac ac-ft
 Bear  65,000   94,000   64,000   1.47          
 Green   243,000   401,000   331,000   1.21   432,000   401,000   375,000 
 Northeast   160,000   86,000   77,000   1.12   88,000   86,000   76,000 
 Platte  686,000   550,000   612,000   0.9   527,000   566,000   515,000 
 Powder/Tongue     184,000   161,000   1.14   194,000   184,000   178,000 
 Snake/Salt   84,000   102,000   99,000   1.03   105,000   102,000   94,000 
 Wind/Bighorn2,3   1,041,000   1,039,000   600,000   1.73          
 Total  2,279,000   2,456,000   1,944,000   1.234      
  1. In 1973 Framework Plan, Powder/Tongue Basin is included in Northeast Wyoming Basin. Also, the 1973 Wind/Bighorn Basin included the Little Bighorn subbasin, but the Little Bighorn is in the 2002 Powder/Tongue Basin.
  2. Bear, Platte, and Wind/Bighorn values are overall averages, Bear and Wind/Bighorn Basin Plans did not provide normal, dry, and wet year scenarios for consumptive use estimates. Current total CU for other basins taken from "normal" year averages.
  3. Wind/Bighorn River Basin Plan provided full-supply consumptive irrigation requirement but not supply-limited consumptive use. Table value was estimated by multiplying historical diversions by overall efficiency and does not include Tribal Futures projects.
  4. Average unit CU.