Project Need
Need For Project:
The San Rafael River has been severely impacted by the invasive species, tamarisk. Tamarisk has replaced much of the native vegetation along the riparian zone. The presence of tamarisk in these locations traps additional sediments, eventually narrowing and deepening the channel and disconnecting the river from the riparian zone. As a result of these processes valuable fish habitat and riparian vegetation is lost.
A large irrigation dam in the lower river is a complete barrier to fish movement, which has prevented endangered fish of the Colorado River from utilizing the upper San Rafael River, however recent research has found significant use of the lower river by endangered fish, especially Colorado Pikeminnow. The other native fish species that do occur at Fuller Bottom, are known collectively as the "three species", the roundtail chub (Gila robusta), bluehead sucker (Catostomus discobolus) and the flannelmouth sucker (Catostomus latipinnis). These species are currently managed under a multi-state, multi-agency conservation agreement. The roundtail chub has been warranted but precluded for listing under the Endangered Species Act in the Lower Colorado Basin. The range and abundance of all three species have declined dramatically throughout their historic range. The three species currently occupy only ~50 percent of their historic range, largely due to habitat perturbations, fragmentation, and interactions with non-native fish. The San Rafael River is one of the few tributaries in Utah where all three species still exist, making it a high priority conservation area.
One advantage native fish species have in the upper San Rafael is that non-native fish species and numbers are very low, this is due to the fact that the barrier in the lower river has prevented non-native fish present in the Green River from colonizing the upper river. We know that populations of the three species appear to be controlled through source-sink dynamics, with the populations in the upper San Rafael River providing a source to the downstream sink populations. Therefore protection of the populations in the upper river is critical to the long term viability of populations in the lower river.
Fuller Bottom provides important spawning habitat for the three species and whole tree removal of tamarisk along the bank will help maintain river complexity needed for providing various spawning habitats. For example, lateral scour increases when removing tamarisk from the outside river bank, this creates low velocity habitat required for young of year and larval fish. This process also widens the river and decreases steep banks. Over time more water will access the floodplain maintaining native vegetation. Removing tamarisk from the uplands will open up the canopy and increase forage for cottontail rabbits that are present within the management area. The cottontail population is currently using tamarisk stands for burrowing as the dense stands provide protection from predators. In 2016 wildlife brush piles were constructed using removed tamarisk trees to provide cover for small animals (birds, rabbits, reptiles) To provide cover from predators, materiel from tamarisk piles will be used to construct additional cover piles near existing burrows. A pond was excavated on the south side of the river for wildlife. Overflow from the pond will create a small wetland benefiting many wildlife species.
Another additional need that will be provided by this project is increasing hunt-able area for small game in the southeast region. WMA's in the area such as Desert Lakes and Huntington Game Farm, have been used in recent years for pheasant releases, the popularity of these releases have led to safety and overcrowding concerns. During the first phase (FY16) 25.7 acres of tamarisk was removed from the property, increasing open upland habitat where pheasants were released during the 2016 hunting season. Continued removal of tamarisk with additional herbicide and seeding treatments will increase the upland hunting value of the property.
Objectives:
Objectives of Phase II include:
(1) Supplying a drip irrigation system to grow shrubs and trees favorable to game species, especially turkey. A 3/4 arce pond has already been excavated that will be filled by an artesian well producing 35-40 gallons per minute, providing consistent flow, benefiting aquatic life as well as supporting irrigation for terrestrial wildlife. Installing drip lines off the artesian well will minimize water evaporation increasing the amount of food crops for wildlife.
(2) The pond was constructed near large cottonwood trees providing roosting habitat for turkeys. Additional trees will be planted around the pond increasing nesting/roosting habitat for migratory birds.
(3) Implement upland seeding and tamarisk re-sprout treatments to improve open spaces
created by tamarisk removal. The loose earth around the pond and dam will also be seeded.
(4) Maintain property fence on WMA to resolve trespass cattle issue and protect newly constructed pond.
(5) Create wetland habitat by allowing pond to overflow towards a river oxbow.
(6) Improve riparian function and fish habitat.
(7) Increase suitable native fish rearing or holding habitat if desired in the future (using the pond).
Project Location/Timing Justification (Why Here? Why Now?):
Fuller Bottom provides important spawning habitat for the three species and whole tree removal of tamarisk along the bank will help maintain river complexity needed for providing various spawning habitats. The three species currently occupy only ~50 percent of their historic range, largely due to habitat perturbations, fragmentation, and interactions with non-native fish. One advantage native fish species have in the upper San Rafael is that non-native fish species and numbers are very low, this is due to the fact that the barrier in the lower river has prevented non-native fish present in the Green River from colonizing the upper river. We know that populations of the three species appear to be controlled through source-sink dynamics, with the populations in the upper San Rafael River providing a source to the downstream sink populations. Therefore protection of the populations in the upper river is critical to the long term viability of populations in the lower river. Failing to implement conservation projects for three species in the upper San Rafael could result in the decrease or loss of three species populations. The upper San Rafael River is a stronghold for roundtail chub, a species that has been petitioned for listing in the lower Colorado Basin, future petitions in the upper basin (encompassing the San Rafael) are likely. Missing opportunities to improve habitat for roundtail chub increase the threat of federally listing this species.
The San Rafael River is listed on the states 303 D list, for Impaired Waters, water quality issues include high salinity, TDS, and chlorides. Increasing connectivity to the flood plain and decreasing salt concentration within the soil can be achieved by implementing this project.
Tamarisk removal can have negative impact to bird species that prefer nesting in thick tamarisk. The risk of destroying bird nests can be mitigated by conducting the removal outside of the nesting period. Disturbing fish spawning is also a concern, this can also be prevented by avoiding work in the spring and summer months.
Relation To Management Plan:
Relationship to Management Plans #4050
Fuller Bottom Riparian and Upland Improvement
Range-wide Conservation Agreement and Strategy for Roundtail chub (Gila robusta), Bluehead Sucker (Catostomus discobolus), and Flannelmouth sucker (Catostomus latipinnis)
Developed to expedite implementation of conservation measure for roundtail chub, bluehead sucker, and flannelmouth sucker throughout their respective ranges as a collaborative and cooperative effort among resource agencies.
Objective B. Establish and/or maintain roundtail chub, flannelmouth sucker, and bluehead sucker populations sufficient to ensure persistence of each species within their ranges.
Objective C. Establish and/or maintain sufficient connectivity between populations so that viable metapopulations are established and/or maintained.
Objective D. As feasible, identify, significantly reduce and/or eliminate threats to the persistence of roundtail chub, bluehead sucker, and flannelmouth sucker that: 1) may warrant or maintain their listing as a sensitive species by state and federal issues, and 2) may warrant their listing as a threatened or endangered species under the ESA.
Ac tion 5. Increase roundtail chub, bluehead sucker, and flannelmouth sucker populations to accelerate progress toward attaining population objectives for respective species.
Action 6. Enhance and maintain habitat for roundtail chub, bluehead sucker, and flannelmouth sucker.
Enhance and/or restore connectedness and opportunities for migration of the subject species to disjunt populations where possible.
Restore altered channel and habitat features to conditions suitable for the three species.
Provide flows needed for all life stages of the subject species.
Maintain and evaluate fish habitat improvements throughout the range .
Utah Comprehensive Wildlife Conservation Strategy
Developed to ensure State Wildlife Grants funds are spent to effectively restore and enhance wildlife populations and their habitat, and prevent the need for additional listings on the Endangered Species List.
Bluehead Sucker- Tier 1 (conservation agreement species)
Threat: Habitat fragmentation
Action: Identify areas that need to be connected and implement appropriate actions
Flannelmouth Sucker -Tier 1 (conservation agreement species)
Threat: Habitat fragmentation
Action: Identify areas that need to be connected and implement appropriate actions
Roundtail Chub- Tier 1 (conservation agreement species)
Threat: Habitat fragmentation
Action: Identify areas that need to be connected and implement appropriate actions
Lowland Riparian Habitat
Threat: Channelization- lack or riparian vegetation; increased sedimentation
Action: restore degraded habitats- add meander to streams and plant desirable vegetation
Lotic Habitat
Threat: Channelization-increased water velocity; lack of riparian vegetation; increased sedimentation
Action: Restore degraded habitats- add meander to streams and plant desirable vegetation
Threat: Invasive Plant species-thick stands of tamarisk can reduce the amount of flowing water in a stream, narrow channels
Action: restore degraded habitats- use herbicides, mechanically remove, or otherwise control invasive non-native vegetation; plant desirable vegetation
San Rafael Drainage Management Plan Hydrologic Unit 14060009
Plan identifies objectives and strategies for management of aquatic species and their habitat in the San Rafael River drainage.
Native, non-sport fish species- Colorado pikeminnow, roundtail chub, flannelmouth sucker, and bluehead sucker in the San Rafael River need special protection from factors which threaten their existence.
Objective 1. Maintain or ehance populations of Colorado pikeminnow, roundtail chub, flannelmouth sucker and bluehead sucker
Objective 2. Maintain or enhance population of other native, non-sport fish species
Strategy 2. Continue participation in the Three Species Conservation Agreement.
Strategy 4. Work with local, state, and federal authorities to improve habitat in the lower drainage, specifically the removal of tamarisk.
Upper San Rafael River Wildlife Management Area Habitat Management Plan
Identifies important fish and wildlife habitats including: lowland riparian, wet meadow, and lotic key habitats; flannelmouth sucker, bluehead sucker, and roundtail chub. Providing and protecting for these native fish in the focus of the WMA.
Habitat Threats: Invasive plant species- tamarisk; nutrient enrichment-eutrophication of water habitats due to excess nitrogen, phosphorous, and other nutrients
The Upper San Rafael WMA will be managed to increase its functionality, appeal, availability and use by all fish and wildlife species
Noxious Weed Control- UDWR personnel will spray and control noxious weeds on the WMA as required by state law.
Habitat Improvement plan- Habitat projects to remove tamarisk plants should be considered a high priority for the WMA; Restoration of native plan habitat should be implemented; stream bank work would be advantageous to benefit native fish and their habitat; the focus of habitat improvement projects should target improvements for native fish.
Utah Division of Wildlife Resources Strategic Plan
The DWR maintains sustainable and diverse wildlife populations that are valuable to all citizens of Utah.
Resource goal: Expand wildlife population and conserve sensitive species by protecting and improving wildlife habitat.
Protect existing wildlife habitat and improve 500,000 acres of critical habitats and watersheds throughout the state.
Conserve sensitive species to prevent them from becoming listed as threatened or endangered.
Utah State Water Plan
Utah's Water Resources Planning for the Future
Water Quality, the Environment and Other Considerations
Water Quality Concerns in Utah- Preservation and Restoration of Riparian and Flood Plain Corridors- stream bank modification and channelization are the cause of many water quality impairments to Utah's streams. Riparian zones and flood plains need to be preserved and protected because they help improve water quality.
West Colorado River Basin
Section 14- Fisheries and Water-Related Wildlife
Protection of native fish species is important to keep functioning ecosystems intact.
Protection of riparian vegetation will produce benefits including absorption of flood waters, reduced erosion, filtering of sediment and chemicals from runoff, and aesthetic and recreational values.
Issue: There is a need to protect wetlands and riparian habitat and reduce sedimentation of lakes, reservoirs and streams. When riparian areas are in good condition, they provide streambank stability, maintain channel countours, reduce sedimentation, regulate water flow, and enhance water quality.
Recommendation: BMP's should be used to protect and enhance wetlands and riparian areas
Issue 3: Over time, streamflows tend to stabilize the streambed. If stream channels are altered, this upsets the hydraulic regime and causes erosion and sediment deposition, impairing stream use for fish and wildlife purposes
Emery County Land Use Plan
San Rafael River Region
Section 5- Manage the watershed in the san Rafael river region to achieve and maintain water resources at the highest reasonably sustainable levels.
Management practices should be employed in the San Rafael river to restore, maintain, and maximize water resources through restoration, maintenance, and enhancement of the watershed in the San Rafael River region
Where water resources in the San Rafael river region have diminished beforce of succession by woody vegetation, a vigorous program of mechanical treatments should be applied to promptly remove the vegetation and provide a watershed that maximized water yield and water quality for wildlife.
The Utah Strategic Plan for Managing Noxious and Invasive Weeds
A plant is considered a weed when it interferes with beneficial uses of land or water, displaces desirable or native plants, or affects human and animal health.
Mission: Appropriately manage existing and invasive weeds in Utah
Key Element 3: Management of established populations
Key Element 4: Revegetation or Restoration
Fire / Fuels:
Previous tamarisk removal on WMA has reduced risk of fire on the property, however this was not a primary goal of the project.
Water Quality/Quantity:
The wildlife pond constructed on the south side of the river will create wetland habitats due to overflow from the pond inundating ground between the pond and the river. This area will be seeded with the "wetland mix" found in this proposal. Several ephemeral washes are found below the pond, establishing wetland species within these washes will buffer storm water, decreasing gully erosion and sediment input into the river, benefiting water quality.
Developing the well to supply the pond, with a flow rate of ~40 gal/minute, will increase water quantity available for aquatic and terrestrial wildlife.
Compliance:
Project occurs all on state property. NEPA not required for proposed actions. Archaeology clearance surveys were conducted prior to excavation of the pond.
Methods:
Vegetation Planting/Seeding:
Seeding will occur in the fall in both the upland and wetland areas using ATV's and drag harrows. The upland seeding area includes the 24 acres where tamarisk removal occurred in 2016 as well as a few additional acres around the pond to stabilize the dam and disturbed areas due to excavation. The wildlife pond constructed on the south side of the river will create wetland habitats due to overflow from the pond inundating ground between the pond and the river. This area will be seeded with the "wetland mix" found in this proposal. A water jet will be used to transplant willows to the river edges where whole tree removal was completed in 2016.
Pond Improvements:
The pond will be completed by installing a flash board riser and piping the inlet with 2" pvc running from the well to the pond. A drip irrigation system will be installed on the well before reaching the pond and used to water trees and shrubs. A timer will be used to alternate water delivery between the pond and the drip system.
Herbicide Treatment (Invasive tree control):
Tamarisk re-sprouts will be treated in the Fall with hand crews and ATV's following foliar application guidelines. The active herbicide used in the uplands will be Triclopyr (Element4) or similar available brand. Imazapyr (Habitat) with an aquatic label will be used near the river.
Fence:
A boundary fence does exist on the WMA however sand drifts and broken sections currently allow cattle to trespass. Most of the fence will need minor maintenance, some sections will need to be rebuilt with new posts, braces, and wire.
Monitoring:
Fuller Bottom is a long term electrofishing index site for native fish in the Upper San Rafael River. We have trend data going back over ten years giving us the ability to track fish populations, and will continue to monitor fish abundance, habitat preference, and changes to river habitat annually.
Photo points and cover transects will be set up to monitor vegetation response throughout future phases of the project.
We also have 10 cm resolution aerial imagery of the site captured in 2010 for a different fisheries project that will be very useful for planning the project and monitoring changes to both vegetation and river habitat (See attached for imagery examples). I have also attached a publication describing the methods used to detect and monitor positive river changes in the lower San Rafael. The monitoring methods and management recommendations developed in this paper will be used to guide work at Fullers Bottom.
Partners:
BLM Fisheries Program, Natural Resources Conservation Service, U.S. Geological Service, U.S.Bureau of Reclamation, Utah State University, and Utah Water Research Laboratory have all been critical partners during planning and implementing restoration efforts on the San Rafael River (see "Final Plan 7-15-13", attached in documents). The upper San Rafael River, (Including Fullers Bottom) plays a major role in conservation of native fish (Three-species), not only in the San Rafael but the lower Green River Drainage.
UDWR will be overseeing this project as it occurs on a State WMA, however the native fish objectives of this project fit nicely into the San Rafael Restoration Plan and is supported by the above mentioned partners.
Future Management:
A large project is currently being undertaken on the lower San Rafael designed to test various restoration practices and develop future management recommendations. The results of this experimentally designed project will be used to guide future restoration practices on the upper San Rafael and other tributaries (see attached Final Plan 7-15-13)
Implementing BDA structures could likely be a component of future management, again depending on the results of the ongoing BDA pilot project on the lower San Rafael.
The pond has a max depth of 15 ft making it suitable for fish if desired in the future.
Sustainable Uses of Natural Resources:
Livestock will be excluded from the property after fixing the boundary fence. The proposed improvements to the range and fence will improve the grazing value of the property should it ever be leased in the future.