Indeed, Lyons notes that evaporation rates can double in some years.
"So much water is wasted to evaporation," he says.
Stock tanks that are very deep and have less surface area, do not suffer as much evaporation as shallow tanks and ponds with a large surface area, Lyons notes.
Wheat this winter
Market uncertainties and weather could impact wheat growers in Texas this winter, says a Texas A&M AgriLife Extension Service marketing expert.
Much of the uncertainty stems from whether the drought is over, the grain market, and how much wheat will be available for grazing.
Dr. Mark Waller, Texas A&M AgriLife Extension economist in grain marketing and policy, College Station, says most of the state's winter wheat got a boost from late-summer and early-fall rains. A lot of wheat emerged to a good stand, and by late October was even providing forage for grazing by some stocker cattle.
But some producers may opt to go for grazing and grain—or even solely grain production, if prices remain strong.
"From a traditional standpoint, grain prices are high," he says. "We've been trading in a kind of sideways pattern since June, if you look at future market prices. A lot of that is because grain supplies are tight, and not only wheat supplies. If you look at what happened with the drought in the Midwest, we're likely to see pressure for more wheat to go toward feeding because there is a shorter corn crop."
"Some of those look like relatively profitable decisions right now," Waller adds. "With prices at these levels, they at least have something to consider—it's better than having low prices, but there's a lot of uncertainty right now."