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Wildlife officials aim to keep Colorado’s wolves from meeting the endangered Mexican wolf. Is separation the right goal?

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Wildlife officials aim to keep Colorado’s wolves from meeting the endangered Mexican wolf. Is separation the right goal?


A Mexican gray wolf called Asha wandered hundreds of miles across Arizona and New Mexico searching for a mate — no easy task for one of the most endangered mammals in the United States.

After five months of scouring hills and arroyos, she crossed Interstate 40 west of Albuquerque in the fall of 2022 and headed into the forests outside of Santa Fe. But when she traipsed across the interstate blacktop, she crossed an invisible boundary set by federal wildlife officials. As part of longstanding federal policy, any Mexican gray wolf found north of the interstate can be relocated — which is why Asha was darted and flown south, as documented in news stories and U.S. Fish and Wildlife Service reports.

The Mexican gray wolf subspecies has made a significant recovery over the last 25 years, but government biologists now worry that the reintroduction of the larger northern gray wolf in Colorado could derail that progress, should the two populations mix via wandering wolves like Asha.

Those worries prompted Colorado wildlife officials in September to sign first-of-their-kind agreements with New Mexico, Arizona and Utah. They will allow those states to relocate any roving northern gray wolves back to Colorado. The agreements will help keep the 10 wolves released in Colorado in December inside the state, crucial to establishing the self-sufficient population mandated by voters who approved reintroducing the species.

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“This is not a typical kind of agreement for us to have between states,” said Eric Odell, the wolf conservation program manager at Colorado Parks and Wildlife. “It’s not common practice. Wildlife work usually involves geographic boundaries, not political ones.”

Much is at stake with the Mexican gray wolf. Its recovery took hold through an extensive, decades-long effort involving a captive breeding program, international transplantations and ongoing litigation.

The states’ recent agreements, coupled with the U.S. Fish and Wildlife Service’s I-40 policy, will create a buffer zone between the two wolf populations.

Without the precaution, Odell said intermixing could result in Colorado’s larger northern gray wolves taking dominant breeding positions in packs, changing the subspecies’ gene pool until they are indistinguishable. In effect, government biologists believe northern gray wolves likely would take over the Mexican gray wolf population.

“Having that hybridization would become detrimental to the Mexican wolf,” Odell said. “We’re working hard to keep (northern gray wolves) separate from those Mexican wolves.”

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But conservationists question whether allowing the two to mingle would imperil the rare southern subspecies, and some say the Mexican gray wolf needs the northern gray wolf to survive. The wild Mexican gray wolf population suffers from a limited gene pool, so breeding with the northern gray wolf could help diversify the population.

“Historically, there was a spectrum of wolf species and subspecies from Mexico up to the Arctic Circle,” said Chris Smith, the Southwest wildlife advocate for WildEarth Guardians. “To have this wolfless zone between Colorado and Mexican gray wolves is a bizarre and arbitrary symptom of the politicization of our legal treatment of these wolves.”

A subspecies on the brink

The Mexican gray wolf — also called the lobo — is a smaller subspecies of the gray wolf that historically ranged across Mexico and into Arizona, New Mexico and Texas. The Mexican gray wolf is managed separately under the federal Endangered Species Act than the northern gray wolf, which numbers in the thousands across the northern Rocky Mountains and the Great Lakes region.

People nearly eradicated the Mexican gray wolf from both the United States and Mexico by the 1970s. Decades of unregulated hunting and targeted trapping by the federal government to protect livestock took their toll.

By 1977, there were only seven known remaining Mexican gray wolves in the two countries.

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Wildlife officials returned the subspecies to the wild in 1998 and, after decades of management, at least 241 Mexican gray wolves now roam New Mexico and Arizona, according to the Fish and Wildlife Service.

The federal agency imposed the boundary along I-40, which cuts across the Southwest, in part because the documented historical range of the subspecies did not extend north of the interstate. Officials also faced pressure from ranching and hunting interests to restrict the recovery area.

But the wild population has a lack of genetic diversity.

Each wild Mexican gray wolf’s genes are as similar to the next as siblings’ genes would be, said Michael Robinson, a senior conservation advocate at the Center for Biological Diversity and the author of a book on wolf management.

Colorado Parks and Wildlife release wolf 2302-OR, one of five gray wolves captured in Oregon in an initial batch in late December, onto public land in Grand County, Colorado, on Monday, Dec. 18, 2023. (Photo provided by Colorado Parks and Wildlife)

Instead of creating a wolfless buffer zone, Smith and Robinson said, wildlife managers should introduce Mexican gray wolves into southwestern Colorado.

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Those wolves then would breed with northern gray wolves and add much-needed genetic diversity to the subspecies, while minimizing the risk of the northern species’ genes taking over the Mexican gray wolf population. The risk to the Mexican gray wolf would be greater if northern gray wolves established themselves farther south in the core of the Mexican gray wolf’s habitat.

“We can try to approximate the gradation of wolf types that (once) existed from north to south,” Robinson said.

Wandering under watch

The technical working group that shaped Colorado’s wolf reintroduction plan considered reintroducing Mexican gray wolves here but found them the “least desirable” option.

The ballot measure that mandated Colorado’s reintroduction of wolves did not specify whether a subspecies could be reintroduced. But the group wrote in its final report that the Mexican gray wolf should be the lowest priority for reintroduction because Colorado was not part of its historical range. It also cited logistical management concerns due to the subspecies being managed separately under the Endangered Species Act.

“Because they are listed as a unique entity under the ESA, maintaining the genetic uniqueness of this subspecies is paramount,” the November 2021 report states. “If Mexican wolves were present in Colorado, premature interbreeding with wolves from the north could compromise the Mexican wolf recovery effort.”

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It’s unlikely that Mexican gray wolves roamed in Colorado before their extirpation, but the subspecies is better adapted than the northern gray wolf to warmer, drier climates — which is the expected future for southwest Colorado as the climate shifts, Smith said.

“We have to recognize that we’re imposing not just political boundaries, but also pretty complicated legal frameworks on wildlife that do whatever they want on a landscape,” he said. “It’s a problem that we’ve painted ourselves into.”

Biologists have said that Mexican gray wolves need at least three separate but connected populations to thrive, Robinson noted. One study found that one of those populations should be located in southwest Colorado.

It would have made sense to keep the Mexican gray wolves separate when there were only a few dozen of them, Robinson said. But the population is now robust enough to allow some northern gray wolf genetics into the pack, he said.

While all of Colorado’s 12 current wolves — including two that predated the reintroduction effort — and the wolves released in the state in coming years will have radio collars, their progeny will not. That will make tracking whether the wolves have moved into neighboring states more difficult, Odell said.

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“It’s not in perpetuity,” Odell said of the agreements with the other states. “We’ll revisit this in time and see how things are going.”

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Another round of 18 to 24″ of snow possible on Colorado mountain range

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Another round of 18 to 24″ of snow possible on Colorado mountain range


After a weekend of widespread snow in Colorado’s mountains, more snow is on the way. This round of wintery weather won’t be quite as widespread, but it should bring significant accumulation to a part of the state that’s already been hit hard in recent days. With this latest round of snow, most heavy accumulation will […]



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Family of Colorado man seriously injured in crash with school bus hopes for recovery, kindness

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Family of Colorado man seriously injured in crash with school bus hopes for recovery, kindness


Several people are still in the hospital Sunday evening after a crash between a Mesa Valley County school activity bus and an SUV in Lakewood on Saturday. The sister of the man driving the SUV says their family has questions about what happened and is hoping everyone involved heals quickly. Her brother was ejected from the vehicle, and she says that he, along with his girlfriend and her two children, were all taken to the ICU in critical condition. Although investigators have not released any information on how the crash unfolded, the family says rumors and vitriol have been directed at him online.



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After 360 miles of whitewater and irrigation, the Arkansas River leaves Colorado as a trickle

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After 360 miles of whitewater and irrigation, the Arkansas River leaves Colorado as a trickle


The sky is wide open above these plains, where the autumn corn stalks are tall and dry, cattle prices and George Jones are on the radio, and a river meanders through it. 

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In the last Colorado town before the Kansas state line, the Arkansas River is brown and slow, in some spots like a string of big mud puddles connected by sand bars. Ten miles into Kansas, it disappears, depleted this time of year by thirsty cities and farms along its 360-mile journey through Colorado.

By the time the Arkansas reaches the eastern edge of Colorado, far from its origin as a trickle of snowmelt on a 13,000-foot peak above Leadville, it is a different river. Slow flowing and serene, it’s no longer the wide rush of whitewater that descends from the Rocky Mountains and carves canyons.

This story first appeared in Colorado Sunday, a premium magazine newsletter for members. Experience the best in Colorado news at a slower pace, with thoughtful articles, unique adventures and a reading list that’s a perfect fit for a Sunday morning.

“You can walk across it and not get your ankles wet,” said Randy Holland, the town administrator of Holly, population 800. 

The river, and stories of lush fields where the wheat and corn came easy, drew people to Prowers County to settle and farm. Sandy-bottomed canals, dug by horses pulling slip scrapers more than 130 years ago, bring water from the Arkansas, giving farmers and ranchers a reason to plan for the next harvest. 

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The canals are dry except when a gate upstream is opened and each farmer down the line takes their share. Now, though, the gate isn’t opened as often, the water doesn’t flow as far, and the farmers wonder how much longer the Arkansas will give them enough to continue.

The canals and ditches are a main conversation topic for the “coffee-ers,” the morning regulars at the diner. The ditches are a source of conflict — sometimes among neighbors, always among lawyers. Almost everyone here agrees that the cities upstream, and the politicians who live in them, don’t listen or don’t care when people on the Eastern Plains tell them the river is running dry. 

The Arkansas River, as it curves along the south end of town and runs parallel to a two-lane highway to Kansas, carries a resentment deeper than its waters.

“The further you get down the river,” Holland summed up, “the less you feel important.”

map visualization

“We use it to feed people”

Gary Melcher grows corn and alfalfa on the eight acres behind his house, across the street from the high school and Holly community pool. The gooseneck trailer he transformed into a barbecue truck to serve up brisket sandwiches with his special sauce is parked in the driveway, resting between festivals and county fairs. Restaurant-sized cans of baked beans and pickles wait on his kitchen counter.

Melcher grew up in Holly and has been farming since high school. Besides his small farming operation in town, he and his dad grow 460 acres of corn and wheat south of town, about 2 miles from Kansas. 

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Water from the muddy Arkansas flows down a ditch near Melcher’s house, the last ditch in Colorado diverting water from the Arkansas, and he uses every drop he can to irrigate his fields. 

Some 20 years ago Melcher was in Denver to watch the Broncos play and, while sipping a beer in a bar, overheard city guys complaining about how much water is wasted on agriculture. It’s true, agriculture accounts for 89% of water consumed in Colorado, but what the Denver guys didn’t know is that plains farmers are so concerned about every raindrop that they use moisture probes to decide when and how to water, that the ditches are so regulated there is no room for waste.

A hand holds two halves of a freshly split ear of corn still attached to the plant, showing the yellow kernels and white core inside.
Gary Melcher shows off a soon-to-be-harvested ear of corn grown on his family’s farm south of Holly in September. The Melchers rely on water from the Ogallala Aquifer to irrigate this corn crop, but Gary also grows crops with water from the Arkansas River. (Mike Sweeney, Special to The Colorado Sun)

“They just thought we wasted water,” Melcher said. “That’s the sentiment that Denver has. And the problem with farmers is we just put our heads down to work, and so sometimes we’re our worst enemy because we do not tell our story good enough. People do not waste water out here.”

The river’s slow flow through Holly is the result of drought and climate change, but also manmade reservoirs and dams, and the sale of water to cities 200 miles to the northwest. Decades of water deals that allowed cities to purchase water from farmers in the Lower Arkansas Valley, and take those shares from cleaner waters upstream, have dried up farmland and made the water that does reach the far eastern edge of the state saltier and more polluted. 

It’s like the rest of Colorado forgot about Holly, Melcher thinks. 

“The Front Range communities taking water greatly affects every piece of our life,” he said. “When they’re basically watering lawns and developing parks and golf courses and all that, that’s when it really stings. They’re using a lot of water just for beautification, where we use it to feed people.” 

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“What is a river?” is the question The Colorado Sun has asked throughout its multi-part series from Leadville to Holly. 

Along the Arkansas, people look at the same river and see it differently. 

Just below Leadville, not far from its headwaters on the Continental Divide, a portion of the rushing waters of the Arkansas are claimed for the faucets of Aurora and Colorado Springs. Colorado Springs uses detention ponds on Fountain Creek, a tributary of the Arkansas, to temporarily hold off storm water and prevent flooding. In Salida and Buena Vista, the river is a playground, where rafters float through Browns Canyon and surfers hit the man-made Pocket Wave. Cañon City used the river to reinvent itself as an outdoors hub with riverside mountain bike trails. And Pueblo, the city that has long relied on the Arkansas for industry and agriculture, built a Riverwalk that made the downtown cool. 

By the time it reaches Holly, the river is concentrated with salts and other minerals, plus pollutants picked up along the way from wastewater treatment and agricultural runoff. Decreased snowpack and upstream dams and diversions have taken away the river’s ability to flush itself clean. 

“That has changed the health of our system,” Melcher said. “We need the flow, the flush. That’s the biggest problem with being the end-user. If anybody above you affects their water flow, it decreases ours.”

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In high school, Melcher tested the salt content of the water from the Arkansas that he was using to water his corn and wheat. It was saltier than the Great Salt Lake. “So as you were watering your crops, you were actually starving them from water as well,” he said. 

Two main canals bring water from the Arkansas to farms in Holly and the rest of Prowers County — the Buffalo and the Amity. 

A shallow creek bordered by dense green bushes and trees, with a concrete block and metal post visible in the foreground.
A narrow dirt path runs through tall, dense grass on both sides, with patches of green vegetation visible in the background.

The nearly dry Buffalo Canal and the totally dry Amity Canal, shown near the north end of Holly on Sept. 24. Water rights holders in the region have felt the squeeze of water demands by upstream users as well as water sales to cities along Colorado’s Front Range. (Mike Sweeney, Special to The Colorado Sun)

The Buffalo canal begins north of Grenada, about 20 miles west of Holly by road. A small, concrete dam across the river pools water until it rises high enough to open the gate and let it flow down the ditch. A flume tracks the flow to make sure the canal takes only what’s allowed. 

As water flows down the Buffalo, the first farmer in line opens their head gate and takes their share, a portion regulated by the “ditch rider,” work that decades ago was done on horseback but now by four-wheeler. Then that farmer closes their gate and the water flows down to the next farm. 

The Amity ditch takes water from the Arkansas between Las Animas and Lamar, just below the John Martin Reservoir. The water travels some 80 miles, bending around curves and under bridges. 

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If the ditches dry up, Holly could, too. 

“Without water, I would say 25% to 40% of the economic stability of these small towns would be affected,” said Melcher, whose father and uncle moved from Texas to Prowers County to farm in the 1940s. “John Deere would have a hard time staying open. You would lose a lot of ag-support jobs here. Every life here in this area depends on the ag dollars — the grocery store, the gas station, the tire shop, the school.”

“Water is their 401(k)”

Water is worth more than land in the Lower Arkansas Valley. 

Nearly one-third of the farmland that was irrigated in the 1950s is dried up now because the water was sold to cities, according to the Lower Arkansas Valley Water Conservancy District. Farmers on the Eastern Plains can sell water rights for hundreds of thousands of dollars, millions even, and cities have been allowed to take those purchased shares upstream, many miles from Holly.

“You hear farmers say water is their 401(k),” said Peter Nichols, a Boulder attorney who represents the water district. “Fewer and fewer of their children want to stick around and farm and ranch. They get to a point where they can’t do it.”

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The district was formed in 2002 by a 2-to-1 vote of people in five southeastern Colorado counties willing to tax themselves to stand up against cities fueling their “unchecked urban growth” with the valley’s water. There have been some successes, including the thwarting of a 2009 plan by Aurora to buy more water from the Lower Arkansas Valley and use the federal Frying Pan-Arkansas Project to exchange it upstream for use in Aurora.

Another battle erupted when a Louisiana investment group bought irrigation water on the Fort Lyon Canal with plans to sell it for use in 20 Front Range counties, Nichols said. That plan was blocked by the Colorado Supreme Court in 2005. 

There are more fights to come. In Holly, people are paying attention to what happens to the water owned by Tri-State Generation, which bought up 49% of the shares on the Amity Canal as the company made plans to run a power plant outside Holly. The plans died when the state moved away from coal. The talk of the town is what would happen if Tri-State ever tried to sell those shares to cities upriver.

Any proposed sale to someone outside the valley would surely end up in court. 

Road signs at the edge of Holly, Colorado indicate city limit, US Route 50, Colorado Route 89, and note that it is the hometown of Governor Roy Romer.
A metal grain elevator building labeled "COOP" stands near a tall water tower marked "HOLLY COLO" under a partly cloudy sky. Trees and railroad tracks are visible in the foreground.

Holly, Colorado, is at the junction of U.S. Highway 50 and State Highway 89, along the Arkansas River and only a few miles from Kansas. It’s small, with a population of about 800 people, and has a long agricultural history in the region. (Mike Sweeney, Special to The Colorado Sun)

“People who continue to farm and ranch in the Arkansas Valley say the big municipalities have swooped in when times were bad, taken the water rights, dried up a lot of land and damaged the economy in the process,” Nichols said. “They kind of feel like their water was stolen even though they followed Colorado law.”

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The people who rely on a river of stillwater at the Colorado-Kansas border look at Turquoise Lake, with its blue-green glacier melt, and Pueblo Reservoir, with its 60 miles of shoreline, and wonder if they got their fair share. “Everybody’s suspicion is they are not getting the water they are entitled to,” Nichols said.

On paper, the Arkansas River around Holly should have just as much water today as it did decades ago, despite the water sales to cities. That’s because farmers are allowed to sell only the portion of water used on their crops, not the water that ended up back in the river after they irrigated their fields. If 40% of the water makes it back into the river, then the farmer can sell only 60% of their water. “That’s the way it’s supposed to work,” said Jack Goble, general manager of the Lower Arkansas Valley Water Conservancy District.

The quality of the water, though, that’s different.

“By the time the water gets to Holly, the water quality is much, much worse than even 100 or 50 miles upstream,” Goble said. Farmers in the valley have adopted the attitude that “wet water with salt in it is better than no water,” he said. 

The salt leaches into the river from layers of sediment that 80 million years ago was covered by an ocean. That shale layer is full of sodium, magnesium and calcium, plus heavy metals including selenium, uranium and arsenic, that are absorbed by the river, Goble said. 

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Colorado Springs buys water from the Fort Lyon Canal, around Las Animas, but through a water exchange, the city actually takes the water from the Pueblo Reservoir, which is cleaner and far less salty, Goble said. Colorado Springs uses the water, sends it through its treatment plant, into Fountain Creek and back to the Arkansas — returning the water at a lower quality than the city received it.

“It’s a compounding effect,” Goble said. “That’s what these folks are concerned about and should be.”

Even worse, he said, Aurora bought 95% of the water in the Rocky Ford Ditch, but takes the water way up by Buena Vista, where it’s near pristine. When Aurora is finished with it, the water flows into the South Platte, “gone forever” from the Arkansas River basin, Goble said. 

“It’s getting to where the cities are our enemies”

Jerome Seufer’s family came from Kansas to Prowers County after reading a newspaper ad in 1899 that said the land was better than anywhere else. The farmland was along the Amity Canal, the ad boasted, and connected to the “Greatest Reservoir System In the WORLD.” 

That system expanded with the John Martin Dam and Reservoir, built by the U.S. Army Corps of Engineers in the 1940s with a pause for World War II. The reservoir in nearby Bent County is a popular state park for boating and fishing, but the bigger point was to prevent flooding after gully washers, and to store water for farms in Colorado and Kansas. The two states signed the Arkansas River Compact in 1948 — not that it put an end to fighting over the water. 

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Seufer’s grandfather, who remembered the days when water was so abundant he could irrigate all winter, was no fan of the reservoir. “All they did was build a bank of water that the Front Range can sell on paper,’” Seufer recalled him saying, often. 

“For my grandpa, the river ran so much water all the time that it was swept clean from a rain,” Seufer said. “They’d have to go check and see if they could cross it with their wagons and horses back in the day. Now, I mean, even if you had to cross it with a wagon, you could go probably about any time.

A man wearing a plaid shirt, cap, and sunglasses stands outdoors on a grassy path under a partly cloudy sky.
Holly resident Jerome Seufer has farmed in the region all his life. He relies on long-held water rights to Arkansas River water to irrigate crops, but decreased snowpack, upstream usage and water sales to cities have impacted his farming operation. (Mike Sweeney, Special to The Colorado Sun)

“And so as years go on, it’s just getting less and less all the time. It used to just free flow all the way through. It’s getting to where the cities are our enemies.”

Seufer’s farm is the last on the Amity Canal. It’s up to the Colorado Division of Water Resources to determine when the gate that fills the Amity is lifted and how long it stays open, depending on snowpack and rain. Each farmer along the canal might get hours or three days, depending on their share. 

The gate used to open for the first time in April, but lately, it’s May or even June, said Seufer, who is a board member of the Amity Canal. It used to run 10 or 12 times a season, but not anymore. “We are averaging four to five runs of water, if we’re lucky, during the growing season.”

In 20 years, the price per share for water dues on the canal has climbed to about $55, up from about $5. The size of a share fluctuates depending on how much water is available, but traditionally is around one acre-foot — enough water to cover one acre of ground with one foot of water, or about the amount used by two suburban households per year. That means farms pay close to $9,000 per year in canal dues to irrigate each quarter section of land, or about 160 acres. They could sell the rights for far more, though. 

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“I don’t know what our future is,” Seufer. “We talk to our lawyers all the time. Because we cannot keep paying more and more on our water rights to farm. We’ve got to figure this out in the next 10 years, or we won’t be able to continue.

Government subsidies that farmers receive for growing food, and that support the whole town, are decreasing as production decreases, he said. “It’s getting tougher. I hate to say it,” Seufer said. “But I don’t know if we’ve got enough to hold it here, unless somebody above at the state intervenes.” 

Prowers County people look to Crowley County, just to the west, as a cautionary tale. Most of the farms sold their water shares of the Arkansas to cities upstream, decimating local agriculture. “It left all these people with no water,” Seufer said. “It looks terrible.” 

The number of farms is dwindling in Prowers County, too. Seufer can tell by the number of people who come to Amity Canal annual meetings. “When I was little, you’d go to the annual meeting and there would be 80 to 100 farmers that showed up,” he said. “Now there isn’t 15.” 

Holly’s relationship with the river has been passed down for generations

At the Lower Valley Water Conservancy District, Goble is pushing farmers who want to sell their water rights to lease them instead. That way the money keeps coming back to the communities. 

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Goble, who lives in Bent County, wonders when people who don’t live in farming areas will understand the broader consequences of dried-up farmland. 

“I’m worried that it won’t be until there is not adequate food in the grocery stores, or at least not at an affordable price,” he said. “Maybe our citizens will finally wake up at that point and go, ‘Why did we dry up all this land?’ Once the water leaves, it’s never coming back.” 

The people of Holly know this already, because their relationship with the river has been passed down for generations. 

Over the decades, Holly has been flooded by the Arkansas, smacked with dust storms and partially flattened by a tornado. In 1965, the town was evacuated when the river roared through and spilled over its banks, leaving much of Holly underwater. 

A field of tall green grasses under a partly cloudy sky, with distant buildings and structures visible on the horizon.
Acres of corn as far as the eye can see are grown by the Melcher family just south of Holly using water from the Ogallala Aquifer. (Mike Sweeney, Special to The Cdolorado Sun)

Holly became a town in 1903, named after a cattle rancher whose stone barn is now a historic building on Main Street. Settlers had come from Kansas and Oklahoma, drawn by the cheap and lucrative land. The Holly Sugar Plant opened in 1905, to turn sugar beets into sacks of white sugar. And from 1965 to 1995, Gateway Downs offered horse racing on a half-mile “bush track” oval just west of town. 

A sign reminds drivers entering on U.S. 50 that Holly is the hometown of former Gov. Roy Romer, and a trail along the banks of the Arkansas is named for a 4-year-old boy, Justin Harrington, who drowned in an irrigation ditch in 2006.

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The Arkansas River doesn’t supply the town’s drinking water; that comes from deep-water aquifers, trapped under shale. And that has problems, too.

The town is facing a potential $10 million overhaul of its water treatment system after state and federal officials grew concerned about high levels of radium, a natural mineral that can cause health problems including cancer if people drink it for years. Town trustees send notes with water bills telling people that children should not drink the water and suggesting people buy bottled instead.

Some farmers in Prowers County pump their water from the Ogallala Aquifer, so large that its underground expanse stretches across eight states, including the eastern edge of Colorado. Those farmers don’t rely on the flow of water in diversion ditches from the Arkansas, but even so, the health of the river is related to the aquifer, which is shrinking. 

Holly’s population is shrinking, too, with about 400 fewer people today than in 1950.

After the Arkansas River leaves Colorado, the river that began as melting snow on a mountain top and flowed for hundreds of miles across the state barely trickles into Kansas. Exhausted by the journey, it even disappears underground for a stretch, until it’s replenished along the way by tributaries in Oklahoma and Arkansas. Then it disappears again, spilling into the Mississippi.

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