In a letter to city officials, the transit agency provided a list of cities that would not be able to use their allocation.
High energy users could then buy them - motorists who had used their allocation would still be able to buy petrol, with the carbon points drawn from the bank and the cost added to their fuel bills.
(vi Commercial tour operators may decide whether to use their daily allocations of transportation events for snowmobiles or snowcoaches, subject to the limits in this section.
"If cooperating jurisdictions cannot use their annual allocations," she wrote, "the funds should revert to the county and be reallocated to areas of highest need".
Lake Powell, fed by rain and snowmelt that create the Colorado and tributaries, has risen more than 60 feet from a 2004 low because the upper basin states, Colorado, New Mexico, Wyoming and Utah, do not use their full allocations.
People who did not use their full allocation, such as families who do not own a car, would be able to sell their surplus carbon points into a central bank.
"What has saved us so far is that the upper Colorado river states Wyoming, Colorado, Utah and New Mexico don't use their full allocation [of water] yet," says Mr Papelis.
Farmers who do not use their full allocation can sell the remainder; indeed, anyone can take part in the water market, and water rights are now increasingly being separated from the land they came with.There is, however, a catch.
General Abel says this was achieved by cutting imports, even for re-exporters, by limiting the remittances abroad of trading companies to $50,000 a month, and by insisting that government departments use their dollar budget allocations, rather than hang on to them, and sell their kyat at the market rate.
