Guest Columnist

Going to the Well Too Often

Over-use of small groundwater wells due to a legal loophole could leave Montana -- and wilderness -- tapped out.

By Laura Ziemer, Trout Unlimited, Guest Writer, 1-22-10

 
 

It’s said that good fences make good neighbors—and in the West, that also applies to good water laws. So what happens when a legal loophole allows some well users to take more than their fair share?

The neighbors aren’t happy.

In Montana and throughout the West, rural homeowners have long relied on small groundwater wells for their water supply. And for decades, these permit-exempt wells (pumping less than 35 gallons a minute) didn’t seem to pose any major problems and largely flew under the regulatory radar.

But during the residential housing boom of the last decade, developers seized on the small-well loophole to avoid the time and expense of obtaining water rights for new housing subdivisions, including in over-tapped river basins that legally are closed to further water appropriations.

In some cases, these clusters of wells deplete stream flows in nearby rivers and streams and undercut the senior water rights of ranchers and landowners.

At a time of growing water scarcity in the arid West, this exempt-well boom threatens not only the economic viability of nearby ranches and farms but also the health of our rivers, fish and wildlife.

Rancher Polly Rex, whose family raises livestock near Absarokee, worries that a new exempt-well-watered subdivision of 60 homes sprouting up just down the road could dry up flows that she needs to grow hay and water livestock—in essence denying her ranch a water right that goes back to the late 1800s.

Indeed, the spread of unregulated wells directly threatens the “first in time, first in right” provision that forms the basis of water rights and land values in the West. As Rex recently said, “My water rights are probably the most important component on my place. I’ve been told since I was a little kid that they’re like gold. Now I’m finding they’re not worth the paper they’re printed on.”

Between 2000 and 2008, almost 30,000 exempt wells were drilled in Montana—most of them in the booming rural suburbs near Kalispell, Missoula, Bozeman and Helena. The trend shows no sign of abating: In Montana, the number of new permit-exempt wells outnumber new, permitted wells by about 10,000 to 1.

To be clear, not all exempt wells pose problems. Isolated, rural wells for domestic and stock water have little impact on surrounding water levels.

The problem is when permit-exempt wells are clustered for use by large subdivisions.

As we know, there’s a close connection between surface water and groundwater. Groundwater is the lifeblood of many rivers and streams, providing the base flows needed to keep them healthy. Moreover, groundwater is cool in temperature and highly oxygenated—both essential requirements for healthy fisheries. Concentrations of permit-exempt wells siphon off these groundwater flows headed back to replenish streams. 

The exempt well loophole threatens the health of Western rivers and the wildlife and fish that depend on adequate flows. And by failing to protect senior water rights, it undermines the integrity and fairness of the water allocation system and the ability of communities to plan future growth.

In Montana, ranchers recently filed a petition asking the state to issue new rules requiring all groundwater users to get permits and account for their impacts on other users.

Several other Western states are now looking at a requirement that all wells, regardless of size, must go through a permitting process. (At present, Utah is the only Western state with this requirement.)

Meanwhile, Trout Unlimited has proposed a groundwater exchange program in Montana that offers a market-based alternative: A new development using permit-exempt wells would be required to offset potential impacts by leasing water from other water holders to return to the stream, or purchase “water credits” that would be used to supply water during periods of drought. This approach could be simpler, cheaper, and more effective than a complicated new layer of permit rules.

One thing is certain: Water officials in Western states can’t ignore this growing threat to our rivers and streams and to the foundation of Western water law.  Nor can they ignore a basic law of hydrology: All of our waters, below and above ground, are interconnected. There is no magic bottomless well.

We must recognize that fact—or face a much drier, poorer future.

Laura Ziemer is director of Trout Unlimited’s Montana Water Project. She lives in Bozeman.



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