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Cutthroat Trout Migration Barrier and Maintenance - Southern Region FY22
Region: Southern
ID: 5689
Project Status: Completed
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Project Details
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Need for Project
The Bonneville cutthroat trout (BCT) and Colorado River cutthroat trout (CRCT) are species covered under Conservation Agreements to help protect and expand their populations and habitats to prevent them from becoming listed under the ESA. The DWR has constructed and maintains many fish barriers throughout southern Utah streams to protect conservation populations of cutthroat trout. The barriers are need to prevent non-native fish species from inhabiting streams with pure strain native cutthroats. UM Creek flows into Forsyth Reservoir and then down into Mill Meadow Reservoir. Above Forsyth Reservoir, UM Creek supports a Conservation Population of Colorado River cutthroat trout. The main barrier on UM Creek has not always been an effective barrier and splake have gotten above it in the past. Recently a few rainbow trout have been netted and caught in Forsyth Reservoir. The rainbows pose a threat to the CRCT population if they should become established and move above the fish barrier. We believe that the dam at Forsyth Reservoir is not always an effective barrier and rainbow trout can move upstream from Mill Meadow Reservoir into Forsyth Reservoir. Rainbow trout may also have been moved by other people. The Southern Region would like to build a fish migration barrier on UM Creek just above Mill Meadow Reservoir to prevent or reduce the risk of rainbow trout, as well as perch, from moving upstream into Forsyth Reservoir. In Fall of 2019 the main UM Creek barrier just above Forsyth Reservoir had maintenance work completed and it now functions much better as a barrier to help protect the CRCT population. Three existing barriers on the North and South Forks of North Creek had maintenance work completed on them in fall of 2019, but there was too much water to repair the concrete splash pads. On one barrier the pad has completely washed away and needs to be rebuilt, and the other two have holes in the concrete that needs to be repaired. Manning Creek supports a population of Bonneville cutthroat trout and Manning Reservoir is one of our wild brood populations for taking eggs. The rock barrier was one of the first barriers built a long time ago. There has always been a concern that non-native fish could get around the barrier during high flows. A couple of years ago brown trout were found above the barrier. The barrier needs to have more rock added to it and a larger splash pad to make it a better more secure barrier. In June of 2020, a new diversion structure was built above the rock barrier that should function as a second barrier.
Provide evidence about the nature of the problem and the need to address it. Identify the significance of the problem using a variety of data sources. For example, if a habitat restoration project is being proposed to benefit greater sage-grouse, describe the existing plant community characteristics that limit habitat value for greater sage-grouse and identify the changes needed for habitat improvement.
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Objectives
Build one new barrier and repair 4 other barriers to protect native cutthroat trout populations.
Provide an overall goal for the project and then provide clear, specific and measurable objectives (outcomes) to be accomplished by the proposed actions. If possible, tie to one or more of the public benefits UWRI is providing.
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Project Location/Timing Justification (Why Here? Why Now?)
Barriers could fail and non-native fish invade cutthroat trout stream sections. People could move non-native fishes above the barriers.
LOCATION: Justify the proposed location of this project over other areas, include publicly scrutinized planning/recovery documents that list this area as a priority, remote sensing modeling that show this area is a good candidate for restoration, wildlife migration information and other data that help justify this project's location.
TIMING: Justify why this project should be implemented at this time. For example, Is the project area at risk of crossing an ecological or other threshold wherein future restoration would become more difficult, cost prohibitive, or even impossible.
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Relation to Management Plans
Meets objectives in the Bonneville Cutthroat Trout and Colorado River Cutthroat Trout Conservation Agreements with the USFWS by expanding genetically healthy populations, creating metapopulations, and improving, restoring and protecting existing and potential cutthroat trout habitat. Meets UDWR goals and objectives to conserve, enhance and manage Utah's protected wildlife populations by: - maintaining and increasing critical habitats and watersheds - decrease risk to species and habitats - Manage sensitive species populations to prevent them from being federally listed
List management plans where this project will address an objective or strategy in the plan. Describe how the project area overlaps the objective or strategy in the plan and the relevance of the project to the successful implementation of those plans. It is best to provide this information in a list format with the description immediately following the plan objective or strategy.
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Fire/Fuels
Not applicable
If applicable, detail how the proposed project will significantly reduce the risk of fuel loading and/or continuity of hazardous fuels including the use of fire-wise species in re-seeding operations. Describe the value of any features being protected by reducing the risk of fire. Values may include; communities at risk, permanent infrastructure, municipal watersheds, campgrounds, critical wildlife habitat, etc. Include the size of the area where fuels are being reduced and the distance from the feature(s) at risk.
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Water Quality/Quantity
No impact to water quantity. UM Creek will have increased sediment inputs during the short time period of construction. Wet concrete will not be allowed to enter the stream.
Describe how the project has the potential to improve water quality and/or increase water quantity, both over the short and long term. Address run-off, erosion, soil infiltration, and flooding, if applicable.
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Compliance
The Fishlake National Forest is working to complete approval through a Catagorical Exclusion (CX) for the UM Creek barrier. Before construction, a stream channel alteration permit will be secured for the UM Creek and Manning Creek barriers.
Description of efforts, both completed and planned, to bring the proposed action into compliance with any and all cultural resource, NEPA, ESA, etc. requirements. If compliance is not required enter "not applicable" and explain why not it is not required.
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Methods
We plan for the DWR Heavy Equipment Crew to do the barrier work on UM Creek and Manning Creek in October or November, 2021. For the UM Creek barrier the DWR will purchase concrete blocks and have them delivered to the barrier site. The DWR excavator will be used to prepare and shape the stream channel, stack the blocks to build the barrier and place fill material in the stream bed above the barrier. Some local rock will be used around the barrier as well. The Southern Region's Bobcat loader will also be used in construction work. For the Manning Creek barrier, the DWR excavator will be used to collect large rock from around the barrier site and stack the rock on the existing barrier to build vertical side walls and a higher barrier wall. Regional DWR personnel will install concrete splash pads or make repairs on all of the barriers.
Describe the actions, activities, tasks to be implemented as part of the proposed project; how these activities will be carried out, equipment to be used, when, and by whom.
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Monitoring
The barriers will be visually inspected as often as possible, at least every other year or more. Periodically electro-shocking will be conducted above barriers to be sure non-native fish have not gotten above the barriers.
Describe plans to monitor for project success and achievement of stated objectives. Include details on type of monitoring (vegetation, wildlife, etc.), schedule, assignments and how the results of these monitoring efforts will be reported and/or uploaded to this project page. If needed, upload detailed plans in the "attachments" section.
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Partners
Fishlake National Forest
List any and all partners (agencies, organizations, NGO's, private landowners) that support the proposal and/or have been contacted and included in the planning and design of the proposed project. Describe efforts to gather input and include these agencies, landowners, permitees, sportsman groups, researchers, etc. that may be interested/affected by the proposed project. Partners do not have to provide funding or in-kind services to a project to be listed.
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Future Management
All of the streams will continue to be managed as Conservation populations of cutthroat trout. Periodically the fisheries above the barriers will sampled to assess the population and to be sure non-native fishes do not occur.
Detail future methods or techniques (including administrative actions) that will be implemented to help in accomplishing the stated objectives and to insure the long term success/stability of the proposed project. This may include: post-treatment grazing rest and/or management plans/changes, wildlife herd/species management plan changes, ranch plans, conservation easements or other permanent protection plans, resource management plans, forest plans, etc.
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Sustainable Uses of Natural Resources
The streams will continue to provide recreational fishing and have no impact to other land uses in the areas.
Potential for the proposed action to improve quality or quantity of sustainable uses such as grazing, timber harvest, biomass utilization, recreation, etc. Grazing improvements may include actions to improve forage availability and/or distribution of livestock.
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