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BONNEVILLE CUTTHROAT TROUT RESTORATION IN THE CLEAR CREEK DRAINAGE

BONNEVILLE CUTTHROAT TROUT RESTORATION IN THE CLEAR CREEK DRAINAGE. Clear Creek Drainage. Tributary of Sevier River. >60 miles of trout habitat. 1978: BCT restored in Sam Stowe Creek. 2007: BCT restoration plans for three tribs (EA). 2008: BCT remnant confirmed in Pole Creek.

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BONNEVILLE CUTTHROAT TROUT RESTORATION IN THE CLEAR CREEK DRAINAGE

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  1. BONNEVILLE CUTTHROAT TROUT RESTORATION IN THE CLEAR CREEK DRAINAGE

  2. Clear Creek Drainage • Tributary of Sevier River • >60 miles of trout habitat • 1978: BCT restored in Sam Stowe Creek • 2007: BCT restoration plans for three tribs (EA) • 2008: BCT remnant confirmed in Pole Creek

  3. BCT Restoration • 2009: Fish barriers installed at Shingle-Clear confluence • 2010: Pre-treatment recon surveys in Shingle Creek (treatment planned for September)

  4. Twitchell Canyon Fire • Ignited in July2010 (lightning) • Burned 45,000 acres • Treatment cancelled • 40-80 % of Shingle & Fish sub-drainages burned at moderate-high severity

  5. TWITCHELL CANYON FIRE

  6. TWITCHELL CANYON FIRE • Early Oct – Rain storm (bank-full flow) washes ash into tribs and Clear Creek • Post-ash sampling: extensive reductions in fish abundance

  7. 2011 – Spring • Grade control structures • Clear Creek • Lower Shingle Creek • Little habitat damage from spring run off

  8. 2011 – August 3 Rain Storm • Accumulated 0.5 in (Kimberly SNOTEL) • Major flooding in Shingle, Fish, and Clear Creeks • Topped USGS gauge at lower Clear (max reading 500 cfs) • Post-flood estimates of 1500 to 3500 cfs • Normal summer base flow of 10 to 20 cfs • Major damage to Clear Creek Canyon Road • Habitat in Lower Shingle Creek and Upper Clear Creek held up well in flood • Destroyed concrete-block fish barrier

  9. Each block weighs 1800 lbs

  10. 2011 – Pre-treatment Surveys • Shingle Creek Middle Canyon 2011 2010

  11. 2011 – Treatment • Shingle Creek • Clear Creek down to confluence w/ Fish Creek (new barriers) • No fish found in Shingle or Clear below Shingle (11.6 mi / 18.6 km) • Speckled dace and a few rainbow trout in Clear above Shingle

  12. 2011 – Treatment • Pole Creek & three tribs • Cutthroat found in Skunk Creek (97% BCT) • Treated 11.8 mi / 19.0 km

  13. The Future – 2012 • Rotenone treatments • Lower Shingle and Upper Clear (second) • Pole Creek (second) • Upper Fish Creek (first) • BCT introduction • Upper Clear Creek (sport fish) • Sampling • Fish Creek – fish, invertebrates • Shingle Creek – temperature

  14. The Future • 2013 – Second treatment in Upper Fish Creek • Initiate NEPA for BCT restoration in Mill Creek and remainder Clear Creek (incl. barriers) • Habitat rehabilitation needed – woody debris felling and riparian planting in Shingle and Fish creeks • BCT stocking – not sure when Shingle and Fish will sustain fish (limited source) • Introduce other native fish

  15. How has the Twitchell Canyon Fire affected BCT restoration in the Clear Creek drainage? • Non native fish removal accelerated. • Re-establishment of BCT delayed in many areas.

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