WASHINGTON, Oct. 28, 2015 - A group of
northwest Texas farmers is working to do more with less with water from the
Ogallala Aquifer and hopeful that their efforts - through the Texas Alliance for Water Conservation
- will slow the draw from the 225,000 square-mile underground water body.
According to the USDA’s
Natural Resources Conservation Service (NRCS), the current use of groundwater
from the aquifer is “unsustainable;” withdrawals exceed the natural recharge of
the aquifer, which provides groundwater to parts of South Dakota, Wyoming,
Nebraska, Colorado, Kansas, Oklahoma, New Mexico and Texas. For Texas
agriculture, that’s a problem due to the high number of irrigated acres in the
part of the state that draws from the Ogallala.
“We don’t have any more water, so I
think it’s more important for us to make every drop count of the water that we
do have, and the technology is going to improve,” said Glenn Schur, who farms
“a little bit of everything” near Plainview, Texas. Schur is one of the 22
farmers involved in the project.
As part of the project, producers keep
meticulous records about things ranging from water use and soil moisture to
crop productivity and return on investment. Rick Kellison, project director
with TAWC, said the initiative currently covers more than 7,000 acres across 31
sites in nine counties.
“The goal of the project is to help
producers determine ways that they can use less water and still be economically
viable,” he said. “Where water is our primary limiting factor every year as far
as our ability to make a crop, that’s a pretty significant undertaking.”
Eddie Teeter, who’s been farming in the
area for 50 years, said his participation involves two sites, one on
center-pivot irrigation and the other using drip irrigation. He said he can’t
put a finger on the exact amount of water he’s saved after switching from row
water irrigation, but he knows that “what water I’ve use has been more
efficient.”
The switch to drip irrigation and
center pivot irrigation allows for more targeted water use, therefore requiring
less than what was once necessary under more traditional row water or flood
irrigation techniques. Under those methods, water was dispersed in greater
quantities, usually in the rows between plants or flooded across the field.
According
to Kellison, the project was originally an eight-year program authorized by the
Texas legislature and it recently received another round of funding. Results
demonstrated in the first round included 569 acre-feet of water conserved across
all sites from 2006-2012. An acre foot is the volume of water that would
cover an acre of ground with a foot of water.
NRCS also has an initiative to ease the
burden on the Ogallala, but its focus is on the entire aquifer rather than
focused on Texas. Part of that plan involves a goal of improving efficiency on
20 percent of the 3.7 million acres of irrigated farmland fed by the aquifer.
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