Rifle Gap Reservoir proposed management plan undergoing review process #ColoradoRiver

Rifle Gap Reservoir via the Applegate Group
Rifle Gap Reservoir via the Applegate Group

Here’s the release from Colorado Parks and Wildlife:

Colorado Parks and Wildlife has submitted its Rifle Gap Reservoir Proposed Lake Management Plan to several of its partners in the Upper Colorado River Endangered Fish Recovery Program, including the U.S. Fish and Wildlife Service and the wildlife agencies of the States of Utah and Wyoming. Approval by these partners is the last required step to establish future stocking plans for the popular fishery.

Lake Management Plans describe objectives for specific fisheries, including which species will be stocked and managed. The Rifle Gap Proposed Lake Management Plan was crafted in accordance with the ‘Procedures for Stocking Non-native Fish Species in the Upper Colorado River Basin’, a cooperative agreement between program partners.

The goal of the Upper Colorado River Endangered Fish Recovery Program is the recovery of four endangered fish found only in the Upper Colorado River Basin, the razorback sucker, bonytail chub, humpback chub and the Colorado pikeminnow.

“We developed the management plan with input we received at a public meeting in 2010 and comments we have received since then,” said CPW Aquatic Biologist Lori Martin. “Public feedback was critical to form what we feel is a very good vision for future fisheries management of Rifle Gap.”

Rifle Gap Reservoir currently features both cold and cool/warm water species, including rainbow and brown trout, walleye, smallmouth bass, yellow perch, northern pike and black crappie. Walleye and smallmouth bass have self-sustained in the reservoir since they were stocked by the former Colorado Division of Wildlife in 1972, prior to the existence of the Recovery Program. No additional smallmouth bass, walleye, or any other cool/warm water species have been stocked by state wildlife managers since the initial introduction.

Until the proposed LMP is approved, CPW may not stock any fish species other than trout into Rifle Gap Reservoir, under the terms of the ‘Procedures for Stocking Non-native Fish Species in the Upper Colorado River Basin’.

“CPW will remain judicious in terms of which sport fish species will be stocked and managed as we continue our native fish recovery efforts,” said Northwest Region Senior Aquatic Biologist Sherman Hebein. “That is our responsibility as partners in the program.”

As currently written, the proposed LMP allows for the introduction and management of black crappie, yellow perch, rainbow and brown trout and triploid walleye, all non-native sport fish which are compatible with Recovery Program goals. The triploid version of walleye is sterile and typically grows faster than non-sterile walleye because energy is devoted to growth rather than reproduction. This makes the species attractive to many anglers as well as the Recovery Program.

Because of their severe impacts to native fish, smallmouth bass and northern pike are considered ‘non-compatible’ with recovery efforts. Further introduction or stocking of these species in the Upper Colorado River Basin is strongly discouraged by the Recovery Program.

“This is a good proposed plan and has the potential to lead to an even better fishery than we have now,” said Rifle Gap State Park Manager Brian Palcer. “CPW manages our parks and our wildlife together with the public’s input and cooperation and that worked well as the plan came together; however, we will also need cooperation from the public into the future to maintain Rifle Gap as a destination fishery.”

CPW officials add that the public’s support will not only help with recovery efforts for native fish, it will also facilitate continuing efforts to bring quality sport fishing to Western Colorado.

“We have a biologically sound LMP proposed for Rifle Gap,” said CPW Area Wildlife Manager JT Romatzke. “We thank everyone that has contributed to this plan. We are doing what we can to give our anglers a variety of opportunities while simultaneously meeting the requirements of the Recovery Program.”

The Rifle Gap Reservoir Proposed LMP will undergo a 60-day review process. During this time period, Recovery Program partners will have the opportunity to add comments and revise as necessary before granting final approval.

For more information about the Rifle Gap Proposed Lake Management Plan, visit http://www.cpw.state.co.us/learn/Pages/RifleGapReservoirManagement.aspx, or contact CPW Aquatic Biologist Lori Martin at lori.martin@state.co.us.

More endangered/threatened species coverage here.

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