Water from the Casper aquifer, which makes up 60 percent of Laramie’s water supply in a normal year, and possibly up to 100 percent in potential drought conditions in the future, requires minimal transportation and treatment before it’s consumed. It
The Federal Energy Regulatory Commission last week rejected a Colorado entrepreneur's proposal to pump millions of gallons of fresh water from the Green River Basin in Wyoming to Colorado's Rocky Mountain Front. Developer Aaron Million calls the decision a temporary setback.
"First in time, first in right" guides how water is divvied up within states but doesn't always apply across borders. Wyoming and Montana instead rely on the 1950 Yellowstone River Compact, which governs how the states share four Yellowstone tributaries -- the Powder, Tongue, Bighorn and Clarks Fork -- in times of scarcity. It guarantees both states continued access to any rights issued before 1950. To satisfy later rights, the states are promised fractions of each river's remaining flow.