Wyoming State Water Plan, Wyoming Water Development Office
Rafting on Snake River Lake Marie, Snowy Mountains Wyoming Wind River Range picture

STATEWIDE FRAMEWORK PLAN: Updated Data Tables
2007: Data Tables

Total Annual Flow from Most Recent Update1,2,3
Basin Area Ratio Based on
Normal
Conditions		 Yield
Wet Normal Dry
acres4 ac-ft/ac ac-ft ac-ft ac-ft
GREAT BASIN
  Bear River (2011)   960,000   0.43   783,400   408,538   135,348 
COLORADO RIVER
  Green River (2010)4   10,975,618   0.22   3,553,316   2,381,316   1,452,316 
MISSOURI RIVER
  Northeast Wyoming (2003)5   7,680,000   0.03   407,000   240,500   138,000 
  Powder/Tongue River (2002)   7,232,000   0.14   1,418,000   982,600   694,000 
  Platte River (2006)6   15,424,000   0.08   2,249,000   1,307,000   1,105,000 
  Wind/Bighorn River (2010)   12,853,000   0.34   5,103,300   4,393,200   3,106,100 
  Yellowstone River (2010)7   1,790,000   1.79   3,862,800   3,205,800   2,558,800 
COLUMBIA RIVER
  Snake/Salt River (2014)8   3,273,932   1.17   5,654,715   3,821,438   2,506,613 
Total (2007)  62,720,000   0.27   23,234,000   16,992,100   11,781,000 

Values in RED indicate basins updated since previous statewide plan.
  1. Estimates are based on outflow plus depletions from the current river basin plans.
  2. Depletion estimates are from the current river basin plans.
  3. Depleted flows are based on outflow estimates from the current river basin plans.
  4. Wyoming's Share of Green River Basin flows under the Colorado River Compact were not prepared in basin plan
  5. Excludes the flows for the Little Missouri and Niobrara Rivers.
  6. The Platte River system is fully appropriated. Estimates exclude the flows and depletions from the Horse Creek and South Platte Drainages
  7. Drainage are is within Yellowstone National Park and includes estimates for the Madison, Gibbon, Firehole and Gallatin Rivers.
  8. Excludes the flows for the Henrys Fork and Teton Rivers.