From the University of Denver Water Law Review (Jeremy Frankel):
The grain-growing region in the High Plains of America—known as America’s breadbasket—relies entirely on the Ogallala Aquifer. But long term unsustainable use of the aquifer is forcing states in the region to face the prospect of a regional economic disaster. As the High Plains states reach the verge of a major crisis, the states have taken different approaches to conservation with varying results.
The Ogallala Aquifer supports an astounding one-sixth of the world’s grain produce, and it has long been an essential component of American agriculture. The High Plains region—where the aquifer lies—relies on the aquifer for residential and industrial uses, but the aquifer’s water is used primarily for agricultural irrigation. The agricultural demands for Ogallala water in the region are immense, with the aquifer ultimately being responsible for thirty percent of all irrigation in the United States. The Ogallala Aquifer has long been unable to keep up with these agricultural demands, as the aquifer recharges far slower than water is withdrawn.
Aside from the obvious agricultural ramifications from the Ogallala’s depletion, recent studies have shown that groundwater depletion also has a severe effect on freshwater ecosystems in the region. Each state has had to confront the issue in their own way, but the depletion of the aquifer has become severe enough to warrant the attention of the federal government as well. At the state level, the focus has been on maintaining an orderly depletion of the aquifer rather than developing a plan for sustainable use. However, some states have achieved some level of success in slowing down the aquifer’s depletion. Kansas, for example, has recently achieved mild success by adopting a program that put conservation in the hands of the State’s farmers. On the other hand, Nebraska has seen more success than Kansas by being tougher on farmers and exercising its enforcement powers. The federal government has also set up financial and technical assistance for farmers who commit to conservation and is funding large-scale pipeline projects to bring in water to the more desperate areas of the High Plains.
When early explorers Zebulon Pike and Francisco de Coronado came upon the High Plains, they described it as a desert — an impossible region to farm.
Irrigation changed that. It allowed residents to pull water from the Ogallala Aquifer, and grow crops nearly anywhere. The first irrigation wells in Kansas were drilled east of Garden City in 1908.
The Ogallala is a massive, underground sponge, spanning from South Dakota and Wyoming, down through the High Plains to west Texas and New Mexico. Over 27,000 of the total 35,000 wells with active water rights in Kansas overlie the Ogallala, with 87 percent used for irrigation.
But decades of pumping water out, with little return, has taken its toll.
After 110 years of drilling and draining, the world’s largest aquifer is drying up.
The Ogallala is the primary source of water for western Kansas farms, ranches and some communities, but projections indicate several areas that will go dry within 25 to 50 years at current usage rates. Some regions in Haskell County may have a decade or less…
The Ogallala Aquifer Summit was organized by Colorado State University’s Ogallala Water CAP Program — a coordinated agriculture project funded by the United States Department of Agriculture – National Institute of Food and Agriculture. The summit brought together scientists, government agents and producers from the eight states situated over the Ogallala to discuss shared challenges and current initiatives to preserve the aquifer.
Conversations between states had a rocky start, partly because they were spurred out of litigation regarding the Republican River basin along the Colorado, Nebraska and Kansas borders. The conflict led to monthly meetings of the Republican River Compact Administration — comprised of one member from each state — to change the approach and improve water management.
“No offense to those that are here, but I’m just excited to come to an interstate water conference that doesn’t have more lawyers than it does farmers and ranchers,” Kansas Secretary of Agriculture Jackie McClaskey said to applause from the summit crowd.
Nebraska Natural Resources Program Director Jesse Bradley and Colorado Commissioner of Agriculture Don Brown joined McClaskey for the first panel of the summit, discussing the cultivation of interstate conversations.
Brown joked that the whole problem was Nebraska’s fault — Nebraska native Frank Zybach invented center pivot irrigation while living in Colorado — and Bradley fired back that ‘you always blame the upstream state.’
She credits interstate conversations regarding the Republican River as a critical factor for changing the tone of the discussion. Instead of fighting over the water, the group is now working together to preserve water.
“The biggest way we learned this lesson is from the complete 180 we’ve done on the Republican River discussions,” McClaskey said. “In July 2014, we started meeting month-to-month and created a true, long-term agreement, and are using those lessons to expand to all the states.
“Now, I would call my colleagues from Nebraska and Colorado friends, which may not seem like a big deal, but it’s a lot easier to solve a problem with a friend than with an enemy.”
The Bureau of Reclamation has scheduled a North Platte River Water Information Meeting in Scottsbluff, Nebraska.
The meeting will be held at 10:00 a.m., on Wednesday, April 11, at the Scottsbluff Panhandle Station Auditorium, Scottsbluff, Nebraska. The meeting is being held to apprise water users and other interested parties of the reservoir storage and current water supply conditions. Information regarding snowmelt runoff and expected reservoir operations for water year 2018 will be presented.
The Platte River is formed in western Nebraska east of the city of North Platte, Nebraska by the confluence of the North Platte and the South Platte Rivers, which both arise from snowmelt in the eastern Rockies east of the Continental Divide. Map via Wikimedia.
The plan is to divert excess Platte water via canal, culvert and pipeline over the Platte-Republican divide near Smithfield in south-central Nebraska’s Gosper County and run it south into the Republican via Turkey Creek, the Omaha World-Herald reported.
The 25-mile-long stream is a tributary of the Republican starting about 3 miles west of Smithfield. It empties into the Republican between Edison and Oxford. The Republican River rises in Colorado and crosses southern Nebraska before flowing into Kansas.
The primary objective is to help ensure the state’s compliance with an interstate compact that allocates certain percentages of the Republican River’s flows to Nebraska, Kansas and Colorado, said John Thorburn, general manager of the Tri-Basin Natural Resources District in Holdrege. Although the states have been working in harmony on managing the river in recent years, disputes among the three have escalated to the U.S. Supreme Court.
After three years of active planning, project proponents submitted their initial permit paperwork to the Nebraska Department of Natural Resources last week.
Tri-Basin partnered with the Alma-based Lower Republican NRD to develop the $1.4 million to $1.9 million enterprise known as the Platte Republican Diversion Project. It would tap Platte water from a canal owned by the Holdrege-based Central Nebraska Public Power and Irrigation District. The district stores North Platte River water in Lake McConaughy in western Nebraska and delivers it downstream and into canals for delivery to farmers to irrigate cropland.
“This is precedent-setting for Nebraska,” Thorburn said. “We’d be taking otherwise ‘wasted’ water to be put to good use for a beneficial purpose.”
Thorburn and others expect resistance from environmental organizations that have raised concerns, saying there really isn’t extra water in the Platte and that it’s all precious in providing habitat for endangered bird species, including the whooping crane, piping plover and least tern.
The Platte’s floodwater — the excess flows that would be diverted at times — scrubs trees and other vegetation from sand bars and other important habitat for sandhill cranes. Downstream near Lincoln and Omaha, the river replenishes aquifers and well fields providing drinking water to the state’s two largest cities.
The diversion would not occur during the June-through-August irrigation season, Thorburn said.
The potential economic impact of the project in the Republican basin would range from $14.2 million to $33 million, depending on how much of the water required to meet interstate agreements and obligations comes from the diversion versus other sources, according to a study by the Bureau of Business Research at the University of Nebraska-Lincoln.
The Platte in central Nebraska is designated by the Natural Resources Department as over appropriated, meaning there is more demand for the water than the river can provide. It is the state’s only over appropriated river. Still, there are times when floods funnel high water down the river’s usually shallow channels.
An engineering study by Olsson Associates of Lincoln for the project partners indicated that under two scenarios a potential 57,000 to nearly 140,000 acre-feet of unallocated water could have been diverted from the Platte into the Republican during the period of 2013 to 2016. An acre-foot is the volume of water that would cover an acre of land 12 inches deep.
The peak scenario would require 100 cubic feet per second of water to flow down Turkey Creek at times. A cubic foot is like a box of water measuring one foot by one foot by one foot. It contains around 7½ gallons. This rate of flow is a bit less than the volume of water Omahans see in Big Papillion Creek at Q Street in a typical March.
Turkey Creek’s current base flow is about 12 cubic feet per second. Erosion-control measures and other improvements would allow the creek to handle diverted flows up to 100 cubic feet per second without damaging the surrounding land in Gosper and Furnas Counties, according to the engineering study. The draft application calls for diverting 275 cubic feet per second from the Platte in order to provide up to 100 cubic feet per second into Turkey Creek.
Platte River photo credit US Bureau of Reclamation.
Here’s the release from the US Bureau of Reclamation (Brock Merrill):
The Bureau of Reclamation is preparing an environmental assessment (EA) for the Platte River Recovery Implementation Program, Proposed First Increment Extension. Reclamation, working with the states of Wyoming, Colorado, and Nebraska, water users, and environmental and conservation organizations, proposes to extend the First Increment of the basin-wide, cooperative Recovery Implementation Program by 13 years. Reclamation is doing this to meet its obligations under the Endangered Species Act.
The purpose of this action is to continue implementing projects that provide additional water, in order to accomplish the following:
Reduce flow shortages in the Platte River aimed at conforming with U.S. Fish and Wildlife Service target flows
Continue land management activities necessary to provide habitat for target threatened and endangered species
Continue integrated monitoring, research, and adaptive management, in order to assess the progress of the program and inform future management decisions
Reclamation will hold four public scoping meetings during the 45-day scoping period to gather information from other agencies, interested parties, and the public on the scope of alternatives for the EA. The public is encouraged to attend the open house EA scoping meetings, to learn more about the proposal and to assist Reclamation in identifying issues.
The public scoping meetings on the EA are scheduled as follows (All meetings will be held 6:00 – 8:00 p.m.):
October 4, 2017, at Goshen County Fair Grounds, 7078 Fairgrounds Road, Torrington, Wyoming
October 5, 2017, at The Ranch Events Complex, 5280 Arena Circle, Loveland, Colorado (Located in the Larimer County Conference Center; park in Lot B)
October 11, 2017, at Hotel Grand, 2503 S. Locust Street, Grand Island, Nebraska
October 12, 2017, at Platte River Recovery Implementation Program Executive Director’s Office, 4111 4th Avenue, Suite 6, Kearney, Nebraska
At each meeting, the public will have the opportunity to provide written input on resources to be evaluated, significant issues or concerns, and potential alternatives.
Written comments are due by close of business November 2, 2017. Members of the public may submit written comments at the public scoping meetings, via email to email@example.com, or by mail to:
Bureau of Reclamation
Attention: Brock Merrill
P.O. Box 950
Torrington, WY 82240
Here’s the release from Colorado State University:
Farmers in the Great Plains of Nebraska, Colorado, Kansas and the panhandle of Texas produce about one-sixth of the world’s grain, and water for these crops comes from the High Plains Aquifer — often known as the Ogallala Aquifer — the single greatest source of groundwater in North America. A team of researchers, including Colorado State University Professor Kurt Fausch and Jeff Falke, a CSU alumnus and an assistant professor at the University of Alaska Fairbanks, have discovered that more than half a century of groundwater pumping from the aquifer has led to long segments of rivers drying up and the collapse of large-stream fishes.
If pumping practices are not modified, scientists warn that these habitats will continue to shrink, and the fish populations along with them.
The research team combined modeling from the past and future to assess changes in Great Plains streams and their fish populations associated with groundwater pumping from the High Plains Aquifer. The findings have implications for watersheds around the world, because irrigation accounts for 90 percent of human water use globally, and local and regional aquifers are drying up.
A ‘train wreck’
Fausch said the study results are sobering. Based on earlier observations and modeling by Falke and a team of graduate students and faculty at CSU, the Arikaree River in eastern Colorado, which is fed by the aquifer and used to flow about 70 miles, will dry up to about one-half mile by 2045.
“You have this train wreck where we’re drying up streams to feed a growing human population of more than 7 billion people,” Fausch said.
Fausch described the situation as a “wicked problem,” one with no good solution. “More water is pumped out every year than trickles back down into the aquifer from rain and snow,” he said. “We are basically drying out the Great Plains.”
Pumping has dried up streams, small rivers
Since the 1950s, pumping has extracted nearly as much water as what exists in Lake Erie — about 100 trillion gallons — and almost none of it trickles back into the aquifer.
“This pumping has dried up long segments of many streams and small rivers in the region,” Fausch said. From 1950 to 2010, a total of 350 miles of stream dried up in the large area the team studied in eastern Colorado, southwestern Nebraska and northwestern Kansas. “Our models project that another 180 miles of stream will dry up by 2060,” Fausch said.
The loss of fish in the area is also a concern. “What we’re losing are the fishes that require habitat found only in the rivers and large streams of the region, and replacing them with those that can survive in the small streams that are left,” Fausch said. “We are losing whole populations of species from rivers in that region because there’s no habitat for them.”
As an example, seven of the 16 native fish species that were once found in the Arikaree River have disappeared since the first surveys were done in the 1940s. These fish include small minnows, suckers and catfish, species that the CSU scientist said are not among those that are currently federally endangered or threatened, so there’s little regulatory authority to preserve the habitats.
“We’re losing fish that people really don’t know about,” said Fausch. “They are cool and very beautiful, but not charismatic.”
Losing a river means losing more than fishes
Effects from the groundwater pumping will extend beyond the fishes and streams, too. Farmers in that area hope to conserve enough water so that future generations can continue to work on the land. And the everyday places that benefit from water could also disappear.
“If they lose the river, they’ll not only lose fishes, but they’ll also lose water for their cattle, and cottonwoods that provide shade,” Fausch explained. “They also lose the grass that grows in the riparian zone, which is critical forage for cattle in summer. Some of that’s your livelihood, but it’s also the place you go for picnics, and to hunt deer and turkeys. If you lose the river, you lose a major feature of what that landscape is.”
Fausch said that there are some signs of progress, despite the grim findings. Local officials have put meters on wells to ensure that farmers pump only the amount of water allowed under their permits. And farmers are always experimenting with new technology that will allow them to optimize the amount of water they use to achieve the highest crop yields, since it takes electricity to pump the water from deep underground and this is an important cost to them. This doesn’t mean that the groundwater levels that feed streams are not declining, but instead are declining at a slower rate than in the past, he said.
Growing dryland crops an option
One additional option, though it might be a hard sell, is for farmers to grow dryland crops, meaning that they rely only on rainfall each year, instead of pumping water. The problem is the crop yields then vary widely from year to year, depending on the rain.
“Every farmer understands that eventually they will no longer be able to afford to pump as much water,” said Fausch. “Farmers are amazing economists. New options such as economical drip irrigation are being discussed, and farmers will likely switch to these options when they become available.”
Fausch, who has studied rivers throughout his entire career, grows wistful when talking about the research. “When we lose these rivers, we will lose them for our lifetime, our children’s lifetime, and our grandchildren’s lifetime,” he said.
Even if all pumping were stopped tomorrow, the aquifer would refill very slowly, over the next 100 years or more, said Fausch. As the groundwater table rose, rivers would start to flow again.
“Groundwater declines are linked to changes in Great Plains stream fish assemblages” was published in Proceedings of the National Academy of Sciences.
Falke received his doctorate in fisheries biology from CSU in 2009. The research team includes scientists from Kansas State University, Tennessee Technological University, U.S. Geological Survey, Colorado Parks and Wildlife, Westar Energy and The Nature Conservancy.