Cle Elum Bull Trout Population: Difference between revisions
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* Basin-wide #3: Evaluate supplementation (see Appendix D). | * Basin-wide #3: Evaluate supplementation (see Appendix D). | ||
* Basin-wide #9: Habitat monitoring (temperature). | * Basin-wide #9: Habitat monitoring (temperature). | ||
==== Cle Elum River Actions ==== | ==== Cle Elum River Actions ==== | ||
* Cle Elum River #2: Lake Trout assessment and removal | * Cle Elum River #2: Lake Trout assessment and removal | ||
* Cle Elum River #5: Riparian restoration | * Cle Elum River #5: Riparian restoration | ||
* Cle Elum River #6: Habitat Evaluation and Temperature Monitoring | * Cle Elum River #6: Habitat Evaluation and Temperature Monitoring | ||
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*''Cle Elum River #8: support ongoing restoration of passage and habitat for all salmonid species'' | *''Cle Elum River #8: support ongoing restoration of passage and habitat for all salmonid species'' | ||
*''Cle Elum River #9: Monitor bull trout passage at Cle Elum fish passage facilities'' | *''Cle Elum River #9: Monitor bull trout passage at Cle Elum fish passage facilities'' | ||
**''Next step: evaluate use of Cle Elum as FMO habitat for other populations'' | **''Next step: evaluate use of Cle Elum as FMO habitat for other populations ---who is operating the trap????'' | ||
== | == Cle Elum Actions - IFRAME SHOULD REPLACE ABOVE SECTION == | ||
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=== Actions in the Yakima Steelhead Recovery Plan that benefit this population === | === Actions in the Yakima Steelhead Recovery Plan that benefit this population === | ||
Latest revision as of 15:46, 10 August 2026
Overview
The upper Cle Elum River originates in the Alpine Lakes Wilderness and is the primary tributary to the reservoir, entering at its extreme northern end. As mentioned above, the river flows for about 19 miles from the outlet of Hyas Lake (Figure X - MAP), with less than a mile of potential habitat in the headwater reach above the lake. About a mile below Hyas Lake, the upper Cle Elum River leaves the wilderness and enters lands owned and managed by the Forest Service. Approximately one mile further downstream, it enters a low gradient valley where it spreads out over a marshy floodplain (Tucquala Lake) for a distance of about 2.75 miles before the channel once again is confined. Three miles above Cle Elum Reservoir the Cooper River enters the upper Cle Elum River, while the Waptus River comes in 2.5 miles further upstream. Several smaller tributaries enter the upper Cle Elum River along its course; the largest of these are Fortune and Boulder creeks.
Population Information
Population Distribution and Life History
Both adult and juvenile bull trout have been found in the upper Cle Elum River (see Population Monitoring section below) but not a single confirmed bull trout redd has ever been documented in the river or any of its tributaries. Redd surveys have been sporadic and incomplete (a detailed description of the survey efforts is presented in Population Monitoring section below). It is probable that adfluvial bull trout were present in Cle Elum Reservoir following construction of the dam, however confirmation of this has been elusive. The National Marine Fisheries Service (NMFS) reportedly captured 17 bull trout in floating Merwin traps set in the lake during a 1990-91 Cle Elum Reservoir sockeye restoration feasibility study (Pasley 1993). Some believe that these fish may have been misidentified lake trout, which are relatively abundant (Eric Anderson, WDFW, pers comm).
Since that time no attempts have been made to capture bull trout in the lake and no anglers have reported encountering them (Eric Anderson, WDFW, pers comm). In 1996, biologists from Central Washington University observed several adult bull trout during a snorkel survey below Salmon la Sac bridge (Craig 1996). Due to their size (reported as “large”), the observers speculated that they might be migrating adfluvial fish (Paul James, CWU, pers comm). In 2002, two adult bull trout were observed by USFWS snorkelers just below the potential barrier mentioned above (Mallas 2003), however these fish were not of the size characteristic of adfluvial adults. In 2021, the Yakama Nation documented what appeared to be a bull trout x brook trout hybrid in the Cooper River, not far upstream of the confluence with the Cle Elum River. This fish probably washed down from Waptus Lake, where hybrids have been documented as recently as 2024.
Natural Barriers limiting distribution
A series of steep cascades is present about ten miles upstream of the lake (locally known as China Falls). These present a potential barrier to fish migrating upstream.
Population Genetics
No genetic samples have been taken from this population to date. Connectivity and thus the potential for genetic exchange with downstream populations in the Yakima River fluvial system was eliminated by the construction of Cle Elum Dam in 1933.
Population Monitoring
Prior to the 1990-91, NMFS study mentioned above, Cle Elum Reservoir was sampled with gillnets by WDFW in 1978-79. Among other species captured was lake trout. No bull trout were included in the catch (Mongillo and Faulconer 1980). Although not targeting bull trout, none were collected in gillnets set by WDFW in a mid-1990s assessment of the pygmy whitefish population in the lake (Eric Anderson, WDFW, pers comm).
The upper Cle Elum River has received considerable attention over the last two decades by biologists conducting day and night snorkel surveys and electrofishing surveys. In 1992, the Forest Service conducted night snorkel surveys at several locations throughout the Cle Elum drainage and found no bull trout (USFS 1992). In 1996, the Forest Service conducted stream surveys, which appear to have employed electrofishing as the primary method, finding mostly rainbow and brook trout but no bull trout (USFS 1996). As mentioned above, biologists from Central Washington University observed two adult bull trout in the upper Cle Elum River in the fall of 1996 (Craig 1996). WDFW biologists snorkeled the upper Cle Elum River in September 1997 and observed rainbow trout and brook trout (Anderson 2001).
In the most concentrated effort to date, in 2002 the USFWS surveyed 19 randomly selected sampling units using the presence/absence protocols established by Peterson et al. (Peterson et al. 2002). Fourteen additional opportunistic sampling units were also snorkeled and limited hook-and-line sampling was conducted in Hyas and Tucquala lakes. In all 4.9 miles of the river was snorkeled between the Waptus River confluence (~RM 5.5) and Hyas Lake (~RM 19). Twenty-four juvenile (<150 mm) bull trout observations were documented although it was acknowledged that some might have been brook trout (or hybrids). Juvenile brook trout, often difficult to differentiate from bull trout while snorkeling, were abundant and no genetic samples were obtained to confirm field identifications. Two larger bull trout (>220 mm) were observed and identified with certainty (Mallas 2003). Survey crews coordinated by the Forest Service in the fall of 2008 revisited the area where the juvenile observations were made. Working at night, snorkelers surveyed approximately two miles of the river. No bull trout were found, although brook trout and introduced coho salmon juveniles were abundant (Reiss 2008).
Fortune Creek, which enters the river at about RM 12, has also been the focus of fish surveys. The Forest Service employed various methods in 1991 and reported the presence of rainbow and brook trout only. In 2000, the Forest Service snorkeled a portion of the creek and reported the presence of three bull trout (life stage unavailable but assumed juvenile). They also observed brook and rainbow trout. Returning in the fall of 2008, snorkelers working at night surveyed about 0.5 miles of Fortune Creek and did not observe any bull trout (Reiss 2008). About 0.7 miles of the creek was snorkeled by the USFWS in their 2002 effort. This surveying was done during the day and produced no bull trout observations.
WDFW did some sampling in 2021 in the upper Cle Elum, and in fall of 2025 and summer 2026, they samples lower French Cabin, lower Cooper River, lower Waptus River, Fortune Creek, Big Boulder Creek, and the mainstem between Fortune and Big Boulder. No Bull trout were observed. Brook trout were observed in French Cabin Creek, Cooper River, Waptus River, mainstem near Waptus, Big Boulder, and Fortune. Brown trout were observed in the Cooper River.
ADD INFO ON LAKE TROUT NETTING AND REMOVAL.
Redd Surveys
Spawning surveys have been conducted sporadically in the upper Cle Elum River since 1996. With 19 miles to cover, the task is difficult. An index area has not been established, and none of the surveys can be described as complete. Habitat reconnaissance since 1999 has revealed that the most suitable spawning habitat exists above the Fortune Creek confluence (excluding the Tucquala Lake area) where the river has less gradient and the most suitable gravels. Nevertheless, no confirmed redds have been found in eight redd surveys conducted since 2000 (2000-2003, 2006-2009). The most promising “redds” observed were found by biologists from the USFWS and WDFW in September 2002 in the short (<0.7 mile), very low gradient reach directly below Hyas Lake (Jeff Thomas, USFWS, pers comm). Possible bull trout redds had been reported in this reach the two previous years. Seven large excavations that appeared to be redds (i.e., well defined pit and tailspill) were present in close proximity to each other but no fish were observed in the vicinity. The site was visited three additional times over the next month and subsequent investigation revealed no eggs present in the tailspill gravels of any of the redds. It was hypothesized that the redds might be those of spring spawners, possibly large rainbow or cutthroat trout, that had dropped down from Hyas Lake to spawn (fry emergence would have occurred several months previous). It is also possible that the excavations were not redds at all. It remains unknown what species produced these redds. The area was revisited the following two years and nothing similar was found (Reiss 2009).
The USFWS conducted a single redd survey in Fortune Creek in early October 2000. Thirteen redds were observed but the species responsible for the excavations is unknown since no fish were present on or near any of them (Judy Neibauer, USFWS, pers comm). There are strong brook trout populations throughout the Cle Elum drainage, and they are also fall spawning fish. In the fall of 2002 the USFWS conducted bull trout redd surveys (single-pass) in Fortune, Paris, Camp, and Big Boulder creeks. No redds were found in any of them.
Other Distribution Data (eDNA, etc.)
In 2017, Mid-Columbia Fisheries collected 32 eDNA samples in the Cle Elum River, 3 samples in Big Boulder Creek and 6 samples in Fortune Creek. Samples were collected between July and September with the intention that they would contain bull trout DNA from any adults staging to spawn. None of the water samples were positive for bull trout DNA (Parrish 2017). At least 1 sample was taken by WDFW in the Cle Elum River in 2025. It was positive for brook trout but not bull trout.
In 2024, the WDFW funded Mid-Columbia Fisheries with USFWS grant funds to do an eDNA survey in the Waptus and Cooper River drainages. Of 110 water samples taken between August 21 and 30, no Bull Trout were detected but 44 samples tested positive for brook trout.
Population Status and Trend
This population was last officially rated in combination with the Waptus Lake population. The USFWS (USFWS 1998) considered the Cle Elum/Waptus population depressed, decreasing, and at risk of stochastic extirpation. WDFW rates the status of this stock as unknown (WDFW 2004). As of 2015, the Cle Elum population of bull trout is considered functionally extirpated (USFWS 2015).
Habitat
Habitat Overview
Elevations in the upper Cle Elum River range from 2,240 feet at its mouth (Cle Elum Reservoir) to 3,460 feet at the outlet of Hyas Lake about 19 miles upstream. For all but the upper mile the river flows through the Okanogan-Wenatchee National Forest. For almost all of this distance, the river is easily accessible by a Forest Service road, which is paved for the lower four miles. The watershed has a long history of grazing, timber harvest, and mining (Haring 2001). Some scattered small-scale gold mining still occurs in a couple of tributary creeks but grazing and logging are no longer significant activities at this time. The watershed is a very popular recreation area. Four heavily used Forest Service campgrounds exist next to the river in the lower five miles, and road densities are high (3-4 miles/sq. mi.). There are numerous dispersed campsites upstream. Most of these are between Fortune Creek and Tucquala Lake. Many are located on the banks of the river, although the Forest Service has been working over the last decade to relocate and/or restrict access to some of the more problematic of them. There are just a few private residences located on land leased from the Forest Service; most in a small cluster near Big Boulder Creek (~RM 8). There are also a few cabins located near Fortune Creek.
Much of the upper Cle Elum River is confined in a canyon reach about eight miles in length beginning near RM 4.0. Large substrate materials dominated by boulders, high stream gradients and high water velocities characterize this reach. For bull trout, China Falls (RM 9.7) is a significant barrier. Velocity may preclude passage at high flows, and low flows probably make the barrier even more significant. Yakama Nation is working on pushing modification of this falls to improve salmonid migration and access to more spawning habitat. Below the canyon reach the river channel displays alluvial characteristics, which could provide good spawning conditions for bull trout. Above Fortune Creek (~RM 12), the channel is also alluvial and physical habitat conditions for spawning and rearing are much better than were available in the canyon reach. This was the only portion of the river that approached meeting Forest Plan standards for pool quantity and LWD (USFS 1996). The riparian corridor is basically healthy except in areas where concentrations of dispersed campsites are present. In the mid-1990s fine sediment levels (in riffles) met standards, but concerns were raised that increased delivery of fine sediments was likely from dispersed recreational activity. Forest roads are not considered to be a leading contributor of fine sediment in the watershed (Haring 2001).
Elevated water temperatures in the upper Cle Elum River could be a problem for bull trout if they were reintroduced. The river is on the CWA 303(d) impaired water quality list for water temperature and investigators have recorded maximum temperatures exceeding 15o C for extended periods in the summer (Mallas 2003). This is most likely a natural condition probably due to the presence of Hyas and Tucquala lakes as well as the fact that there are large segments of the river where the riparian canopy is naturally sparse.
Detailed habitat information is not available for smaller tributaries of the upper Cle Elum River. Redd survey notes compiled by the USFWS in 2002 provide some general descriptions of habitat conditions in several of these creeks (Fortune, Camp, Big Boulder, Paris). All of them had very steep gradients (>5%) and substrate materials dominated by small and large boulders; suitable spawning gravels were limited and found primarily in small pockets. Steep cascades and small waterfalls were prevalent, many of them at least potential barriers to fish migration. Fortune Creek has the longest stream length available above its mouth, approximately 2.5 miles, before a definite passage barrier is encountered. The distance from the mouth to a barrier waterfall in Big Boulder Creek is approximately a half-mile, but the creek is essentially a continuous steep cascade for this entire distance. The other two creeks have barrier waterfalls located within 100-200 yards upstream of their mouths. All four of these streams are subject to extremely low flows in late summer and early autumn.
If a population of bull trout is reintroduced to the Cle Elum River, FMO habitat for that population would be provided by the Reservoir. Neither the sparse shoreline development or water sports activities on the Reservoir are believed to impact habitat quality. Cle Elum Reservoir is the largest storage reservoir in the Yakima Basin. Although it does experience extreme drawdown in the summer, a 265,000 acre-foot conservation pool (i.e., dead storage) cannot be accessed. This is the only body of water in the Yakima Basin with a strong population of lake trout, which has been identified as a major limiting factor for bull trout populations in Montana (Donald and Alger 1993; Martinez et al. 2009). There are ongoing suppression efforts to reduce the density of lake trout in the Reservoir.
Habitat Monitoring
Field Habitat Surveys
Mongillo (1982) measured water quality parameters and zooplankton densities for Cle Elum Reservoir. Mongillo and Faulconer (1980) conducted limnological studies in Cle Elum Reservoir in 1978 and 1979. They recommended lake fertilization as one method to increase productivity. Mongillo proposed a Cle Elum Reservoir Lake fertilization implementation and monitoring study. Flagg et al. (2000) reviewed Cle Elum Lake productivity and fertilization potential. Lieberman and Grabowski (2007) conducted limnological studies in Cle Elum Reservoir from 2003-2005. They concluded that zooplankton densities may limit the lakes capacity to support resident fish as well as introduced salmonids and suggested the nutrient enrichment may be one method to increase both algal and zooplankton production.
Sediment samples were collected and analyzed for the Cle Elum River and Cooper River in 1990 (Mayo 1998). Cle Elum River samples were collected between the reservoir and Fortune Creek. This monitoring effort demonstrated a level of fine sediments in the substrate within the spawning reach (~3-9%), which would qualify as “functioning appropriately” (USFWS 1999) although this data are from only one year.
The Forest Service completed habitat surveys on the Cle Elum River in 2000 (lower reach) and in 2005 (upper reach) using Hankin and Reeves protocol (Hankin and Reeves 1988; USFS 1996). In these surveys, data was collected on pool/riffle frequency, riparian and channel condition, substrate, LWD, and temperature. In 2006 an Aquatic Species Environmental Baseline was completed for the Cle Elum watershed (USFS 2006d). In 2004, a Federal Roads Analysis was completed for the Cle Elum watershed, including an aquatic rating.
Habitat monitoring is likely to increase as anadromous fishes are established upstream of the dam.
Stream Temperature Data
In 2001, the Forest Service contracted aerial thermal infrared remote sensing surveys on the Cle Elum River from Cle Elum Lake upstream to the outlet of Hyas Lake (Watershed Sciences 2002). Accuracy of temperatures was confirmed with instream sensors. The flights were completed in early September and stream temperatures ranged from 13.9-17.4 °C.
There are three long-term monitoring sites in the Cle Elum River drainage where thermographs have been deployed during the summer low flow period for numerous years: Cle Elum River above French Cabin Creek (2000-2011), Cooper River (1994-2011) and Waptus River (1994-2006) (USFS 2011b). There are a number of other sites throughout the system that have been monitored by the Forest Service for a period of time, mostly between the years of 2000-2005. USFS re-deployed a temperature logger in the upper Cle Elum River in 2025 downstream of Hyas lake. This site was monitored from 2002-2010 and submitted as observed data to the NorWest stream model (Isaak 2017). The Yakama Nation may have other temperature data for this area.
Restoration Actions
Yakama Nation Yakima Klickitat Fisheries Project (YKFP) contracted the design of the Upper Cle Elum Aquatic Restoration project (downstream of the Cooper River bridge) to restore a simplified, degraded channel into quality salmonid spawning and rearing habitat. This involved excavating a perennially-activated secondary channel through the right bank floodplain to restore the river to an anabranch planform with lower velocities, greater habitat complexity, and more cover, and the addition of mainstem engineered log jams and create large vegetated islands to restore elements to sustain and initiate natural physical and biological processes within the reach.This restoration will allow for expanded rearing for reintroduction of salmonids into the upper Cle Elum watershed. Currently, the primary rearing habitat is for sockeye salmon. Additional restoration projects will be undertaken in the future.
Threats
Connectivity
Fish Passage Barriers
Threat Severity: Significant
China Falls is a an upstream passage barrier on the Upper Cle Elum River and Cle Elum Dam has been a barrier to upstream migration into the reservoir since it was built in the mid-1900s. With new fish passage solutions, the dam will no longer be a complete barrier to migrating salmonids.
Entrainment
Threat Severity: Currently Insignificant
This was a significant threat but should be addressed by volitional passage at Cle Elum dam.
Dewatering due to flow management
Threat Severity: Insignificant
There is no dewatering in the upper Cle Elum River, especially due to flow management.
Land-use Issues
Forestry
Threat Severity: Unknown
Current forestry actions will likely be implemented in a way that reduce aquatic impacts. The threat of a high severity wildfire in the watershed is probably the most significant forestry issue. Thinning should improve fire resilience in this area.
Agriculture and Grazing
Threat Severity: Insignificant
There are no current agriculture or grazing issues.
Recreation
Threat Severity: Unknown
There is heavy recreation in the Cle Elum watershed in both dispersed and developed campgrounds. The area is popular for hiking, horseback riding, hunting, and ATV/UTV use. Potential recreation impacts should be thoroughly evaluated prior to reintroduction of bull trout.
Roads and Development
Threat Severity: Unknown
There is a major road up the river valley and a relatively high road density in the watershed. Road impacts should be evaluated prior to bull trout reintroduction.
Mining
Threat Severity: Insignificant
There are no active industrial mining operations in the watershed, but there are small-scale mining claims scattered about.
Other
Ecological Interactions
Brook Trout
Threat Severity: Unknown
Brook trout density in the mainstem Cle Elum river between the reservoir and the Cooper River confluence is likely low. However, brook trout distribution and density should be evaluated in the upstream reaches of the river and Fortune Creek prior to bull trout reintroduction.
Other Invasive Species
Threat Severity: Significant
Lake Trout are prolific in Cle Elum Reservoir, despite yearly removal efforts. Brown trout are present in high density in Cooper Lake.
The density of sockeye and other salmonids in the lake may act as a buffer to predation on bull trout, if they were reintroduced.
A fish salvage for restoration effort in 2026 on the mainstem Cle Elum river below the Cooper Bridge did not encounter any brook trout, brown trout, or lake trout.
Diminished Prey Base
Threat Severity: Insignificant
Cle Elum Reservoir has adequate prey to support a bull trout population.
Disease
Threat Severity: Unknown
With the introduction of anadromous fishes into the system there is a chance diseases may occur.
Water Quantity and Quality
Flow issues/dewatering
Threat Severity: Insignificant
Spawning habitat in tributaries and above Hyas Lake may be limited by low stream flows. A thorough evaluation of stream flow should occur prior to reintroduction.
Current and modeled future temperature conditions
Threat Severity: Significant
Prior to any effort to reintroduce bull trout, there should be a thorough analysis of existing temperature data and modeling for future conditions. As early as 2003, temperature data in the upper Cle Elum River was nearing critical levels for bull trout.
Other changes in hydrology
Threat Severity: Significant
Instances of drought have increased over the past few decades and contribute to reduced snowpack, earlier peak run-off and extended periods of dry streambeds. Lack of summer and fall rains, combined with geomorphology, could potentially impact reproductive success of adult bull trout and survival of juveniles.
Fisheries Impacts
Angling Regulations/Fisheries Use/Poaching (Recreational)
Threat Severity: Unknown, likely significant.
Angling is likely to be a significant threat if bull trout were reintroduced. Increased enforcement and change of regulations would need to occur. Fishing is very popular in the reservoir and upstream.
Management/Monitoring (Research)
Threat Severity: Insignificant
Minimal research and monitoring is occurring in the upper Cle Elum watershed.
Other Threats
Other
Summary of Primary Limiting Factors and Threats
2012 SUMMARY:
The highest severity threat to this population appears to be low abundance. It is uncertain whether bull trout are still present anywhere in the Cle Elum drainage as their presence was last documented in 2002. A high severity threat that appears to have contributed to this possible extirpation is the presence of strong populations of introduced species (brook trout, lake trout, and brown trout). Passage barriers similar to china falls have also likely contributed, both Cle Elum Dam, which has limited connectivity to other bull trout populations and precluded anadromy, and recreation dams that may limit migrations within the system. Another high severity threat is the rising temperatures in the habitats. This is limiting the extent of coldwater habitat for living and breeding. Other threats to the population include lack of marine derived nutrients, habitat degradation due to recreation and forest management and illegal angling.
Transportation issues associated with the paved road along the mainstem Cle Elum River and active mining claims are present in this population area, but are not thought to be significant threats. Agriculture, altered flows, development, dewatering, grazing, and limited habitat are not present in this population area.
This population is currently extirpated. Factors that would significantly limit reintroduction success include introduced species (lake trout, brook trout, and brown trout), passage barriers (China Falls), and rising stream temperatures. Unless significant restoration was done to reduce water temperature, there would probably not be enough cold water habitat to support spawning and rearing of bull trout in the upper Cle Elum River.
Recovery Strategy
Population-level Recovery Strategy
The Cle Elum River population has been identified as a “Monitor” population with a low priority for implementing bull trout actions beyond population monitoring actions used to determine whether there are extant bull trout remaining. If bull trout are found in this basin, the highest priority to recover this population would be to reduce the populations of brook trout, lake trout, and brown trout (to a lesser extent) which dominate this system. There is currently work being done to restore passage and reintroduce anadromous species including sockeye into the Cle Elum system. However, actions to provide passage (Passage at Major Storage Dams) recover salmon populations (Restore Healthy Salmon Populations), address riparian health, extend outreach to anglers and remove recreational dams will do little to benefit bull trout if there are none present. Supplementation will likely be necessary to recover viable populations of bull trout in this system in the future but issues with introduced species would need to be mitigated first.
At this time, until limiting factors are addressed, Cle Elum is a low priority for reintroduction. It will be important to monitor bull trout passing through Cle Elum dam and determine if Cle Elum reservoir may act as important FMO habitat for other populations.
Monitoring Needs/Key Questions
Actions
Future link/ iframe to PowerApp will go in this section.
Completed Bull Trout Recovery Actions
- Cle Elum Dam fish passage facility final design and DEIS, which includes reintroduction of anadromous species, was completed in 2010.
- Cle Elum Dam fish passage facility was constructed and is functional for downstream juvenile migration as of 2026. A trap and haul facility was constructed for adult passage upstream. This facility will be functional in April 2027.
- Dispersed campsites near the confluence of Cooper and Cle Elum rivers were closed or relocated by USFS in 2007 and 2008.
- Numerous dispersed campsites along the river from the northwest end of Cle Elum Lake to the Fortune Creek area were relocated and/or had vehicle access restricted by USFS in 1996.
- Roads in the watershed that were acquired over the last ten years by the Forest Service in land exchanges were decommissioned between 2006 and 2008 (most of these roads were in the upper headwaters of the Cooper River and Thorp and French Cabin creeks).
- Three segments of Forest Service Road 4330 (totaling one mile) located in the active floodplain of the Cle Elum River that are chronic sediment sources are scheduled to be relocated; old road prisms were decommissioned in 2012.
- Drainage and hydraulic improvements were completed along Forest Service Road 4330 in 2011 (1,000 feet of road treated).
- Motor vehicle use on the lakebed was restricted to a limited number of access points and for ingress and egress to shoreline only; off-road vehicle activity on the lakebed was prohibited by USFS in 1999.
- Fishing regulations have been implemented to protect bull trout in the Cle Elum and Waptus rivers (see Appendix F).
- Action in progress: Cle elum River restoration below cooper river bridge.
- Action nearly complete: Cle Elum River #1: Provide connectivity at Cle Elum Dam
Recommended Actions
Relevant Multiple Population Actions
- Basin-wide #3: Evaluate supplementation (see Appendix D).
- Basin-wide #9: Habitat monitoring (temperature).
Cle Elum River Actions
- Cle Elum River #2: Lake Trout assessment and removal
- Cle Elum River #5: Riparian restoration
- Cle Elum River #6: Habitat Evaluation and Temperature Monitoring
- Cle Elum River #7: evaluate prospects for reintro into Cle Elum
- Next steps: China falls / passage, introduced species, temperature/habitat above Hyas Lake
- Cle Elum River #8: support ongoing restoration of passage and habitat for all salmonid species
- Cle Elum River #9: Monitor bull trout passage at Cle Elum fish passage facilities
- Next step: evaluate use of Cle Elum as FMO habitat for other populations ---who is operating the trap????
Cle Elum Actions - IFRAME SHOULD REPLACE ABOVE SECTION
Actions in the Yakima Steelhead Recovery Plan that benefit this population
- Upper Yakima #8: Provide passage at Cle Elum Dam
Update Notes
2012 BTAP text copied into Yakipedia and edited to match new format in July 2026 by Aimee Taylor. ADD LINK TO 2012 BTAP pdf placemark
Additional edits proposed by Alex Conley, Aimee Taylor and Cle Elum River population small group. Reviewed, and updated and approved by BTWG in XXXXXXXXXXXXX
Specific detail on out of cycle updates: