Opponents Say Bike Trial Could Cut Off Migration Route For Prized Deer Herd

Opponents of a proposed Pinedale-area bike trail say they fear it will cut off “the bottleneck,” a migration route for the area’s prized Sublette mule deer herd. Supporters say it won’t, but will open more outdoor recreation opportunities.

MH
Mark Heinz

April 07, 20264 min read

Mule deer are pictured here on the move alongside Elkhart Road near Pinedale. Deer advocates say a proposed new trail system in the area would disrupt the animals’ migration.
Mule deer are pictured here on the move alongside Elkhart Road near Pinedale. Deer advocates say a proposed new trail system in the area would disrupt the animals’ migration. (Courtesy Bill Ames)

In Pinedale, opinions are split over a proposed new nonmotorized trail near Fremont Lake. Some worry that it could cut off a vital mule deer migration route, while others say deer would be unaffected by the project.

Each spring and fall, one of Wyoming’s most prized mule deer herds, the 20,000-strong Sublette herd, passes through what locals call “the bottleneck.” That’s a narrow strip between the southern end of Fremont Lake and the town of Pinedale.

It’s part of the route they take between summer range in the high country to the north and winter range in the vast, open low country south of Pinedale.

Pros And Cons

Building new trails near Fremont Lake would put more pressure on the Sublette herd, which is already greatly diminished from its peak number of roughly 30,000 deer in the early 2000s, Bill Ames of Cora and Green River told Cowboy State Daily.

“Humans have the opportunity to go recreate wherever they want. We have the choice of multiple locations. The deer have no choice but to use that bottleneck,” said Ames, a member of the Wyoming Mule Deer Alliance.

The alliance opposes the proposed new trail and is circulating a petition against it.

However, if and when it’s built, the trail would start on the east side of Fremont Lake and wouldn’t disrupt the bottleneck, countered Ryan Grove, a Pinedale resident and member of the Sublette Trails Association.

Concern over the deer migration route might be rooted in a misunderstanding, he said.

“We want to get the correct information out there and we want to have conversations with people about the process,” he said.

The final project proposal hasn’t been submitted to the Bureau of Land Management, he said.

Once that happens, it will have to go through the agency’s lengthy approval process, so there’s no set time frame for when ground might be broken, Grove added.

The Sublette Trails Association helps build and maintain trails in the Pinedale area. The group wants to open a new trail near Fremont Lake, but some worry that would disrupt mule deer migration.
The Sublette Trails Association helps build and maintain trails in the Pinedale area. The group wants to open a new trail near Fremont Lake, but some worry that would disrupt mule deer migration. (Courtesy Ryan Grove, Sublette Trails Association)

For Locals Only

Locals have long expressed interest to the Sublette Trails Association for an easily accessible “non-motorized, multiple-use” trail near Pinedale, Grove said.

The plan is to start the trail at an access point off Skyline Road at the turnoff for Half Moon Lake, he said. It would be built in two sections, each roughly 6 miles long.

The idea isn’t to create a mountain biking destination for mobs of tourists, but rather provide recreation for locals, Grove said.

“It would be a place for local people to go after work if they want to go for a hike, a run, a horseback ride or a bike ride,” he said.

The trail association would avoid new development in the bottleneck area, which is subject to seasonal closures in the winter, because of the mule deer migration, he said.

The group plans to meet with the BLM on Tuesday and hopes to also meet with the Wyoming Mule Deer Alliance, he added.

Cut Mule Deer A Break

Any new development within the migration corridor could deal another blow to the Sublette mule deer herd, Ames said.

The herd already has lost significant portions of its winter range to energy development. But that’s pulled in massive amounts of revenue for the local economy, whereas a new trail would not, he said.

The mule deer alliance isn’t against the idea of a new recreational trail system; they just don’t think that “crucial mule deer winter range” is the best place for it, Ames said.

Especially during late winter and spring, deer are struggling to get by on the last of their fat reserves, even as does are giving birth to fawns, he said.

“It (human activity) all adds up, and the wildlife are on the losing end of it all,” he said. "With every little thing we do, wildlife loses something."

A mule deer buck is pictured near Pinedale. Deer advocates worry that a proposed new trail system in the area will disrupt the animals’ migration routes and winter range.
A mule deer buck is pictured near Pinedale. Deer advocates worry that a proposed new trail system in the area will disrupt the animals’ migration routes and winter range. (Courtesy Bill Ames)

Plans Not Clear Yet

In an email to Cowboy State Daily, BLM spokeswoman Jacqueline Alderman​ said that only a draft proposal for the trail is in play. 

The plan might be revised over time, and there will also be a public comment period.  

“The BLM Pinedale Field Office has received a draft proposal for a potential bike trail project approximately six miles north of Pinedale,” she said. "The proposal is currently under internal review, and no decisions have been made at this time. 

"As part of this process, the BLM is working with the proponent to evaluate the proposal and identify any necessary revisions.”

She also said because the proposal is in its early stages, there isn’t much detailed information yet available.

“Potential changes may be made as part of the BLM’s internal evaluation, and it would be premature to share specifics before that process is complete,” Alderman added.

Mark Heinz can be reached at mark@cowboystatedaily.com.

Authors

MH

Mark Heinz

Outdoors Reporter