A historically dry winter is setting up what water officials describe as one of the most challenging runoff seasons in recent memory, with operations and allocations at Elkhead Reservoir expected to play a critical role in stretching limited supplies across Northwest Colorado.

Sam Calahan, a water resources specialist with the Colorado River District, said this year’s snowpack is already tracking at record lows, with runoff expected to follow suit.

“We haven’t seen a year like this in a long time,” Calahan said. “Our snowpack is looking substantially worse than 2002 and 2012, and we’re expecting runoff to be worse than both of those years.”

Those earlier drought years are often used as benchmarks across the Rocky Mountain West, but Calahan said current conditions suggest this year could fall below even those historic lows.

That challenging outlook and lessons learned from past years with low snowfall are key focal points in early planning and coordination among water managers, particularly for reservoirs like Elkhead, which serves irrigators, municipalities and environmental needs in the Yampa River Basin.

Calahan said warm, dry conditions have dramatically accelerated snowmelt, raising the likelihood of a runoff season that arrives early, fades quickly and leaves water managers facing difficult decisions for a wide range of stakeholders.

“If we continue having the dry weather and warmth that we’re having, we’re looking at an early and short-lived runoff,” he said.

In a more typical year, gradual warming allows the snowpack to melt slowly, sustaining river flows well into summer. This year, however, that prolonged runoff is not materializing, which is already increasing pressure on stored water supplies.

While late spring storms or summer monsoons could provide some relief, officials do not expect conditions to return anywhere near an average water year. That uncertainty leaves reservoir managers balancing how much water to store versus how much to release to meet downstream demand.

Calahan, who oversees day-to-day operations for Elkhead and other regional reservoirs, said water releases this year will likely increase earlier than usual as river conditions tighten.

In dry years, rivers like the Yampa often come under what is known as a “call,” when senior water rights holders are not receiving their full allocation. When that happens, upstream users with junior rights can be curtailed.

“In a year like this, we expect the river to be under administration for a much longer period than normal,” Calahan said.

That means Elkhead Reservoir water will be released to help fulfill contractual obligations and support users who might otherwise face shortages. Calahan also noted that stakeholders within the system are primarily agricultural irrigators, though municipalities and some industrial users also rely on the system.

“The bigger users are definitely agriculture,” Calahan said, adding that municipal diversions tend to be much smaller by comparison.

Agriculture’s reliance on steady water supplies makes it particularly vulnerable in years like this, when irrigation demands remain high but natural flows decline.

Beyond Elkhead, the River District is coordinating with other reservoirs and partners across the basin to maximize available water by working with water users to shift timing and location of releases where possible.

“There are a lot of creative things we can do in years like this,” Calahan said.

Those strategies are partially based on actions that were taken in past drought years, like 2002 and 2012, when agencies used unconventional approaches to move water to where it was needed most.

One example from recent years is the Yampa River Reservoir Release Program, which allows for additional water releases from Elkhead to support both irrigators and endangered fish species.

Calahan said the program can provide up to 2,000 acre-feet of water from Elkhead, a significant volume for the Yampa Basin.

Similar efforts in other parts of the basin have included purchasing unused water from contract holders and redirecting it to other areas that are facing shortages, particularly during periods of peak irrigation demand.

Even with those tools, this year could push the system to its limits.

Calahan said there is a real possibility that flows could drop so low that even senior water rights holders may not receive their full allocations during parts of the irrigation season.

“I do think there’s a possibility that there won’t be enough water in the river even for the most senior irrigators,” he said.

In extreme cases, reservoir releases may account for a significant share of river flow, as occurred briefly last year, when stored water made up much of what was moving through parts of the system.

That reality, according to Calahan, underscores the importance of Elkhead Reservoir as both a buffer and a lifeline in dry conditions, helping stabilize flows when natural supplies fall short and providing consistency to a region that relies heavily on the river.

For now, water managers are continuing to monitor conditions and adjust operations as the season unfolds.

While there is still hope for late precipitation, planning is focused on making the most of a limited supply and preparing for the possibility of prolonged shortages.

“We’re trying to stay optimistic,” Calahan said. “But it could be pretty dire.”