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Anima imas R River C r Comm mmunit unity F y Forum La Plata County 416 Fire Recovery Efforts and Opportunities Jordan Dimick, PE Senior Engineer 416 Fire Recovery 416 Fire Recovery Efforts and Opportun Efforts and Opportuniti ities

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SLIDE 1

416 Fire 416 Fire Recovery Recovery Efforts and Opportun Efforts and Opportuniti ities March 12, 2020

Anima imas R River C r Comm mmunit unity F y Forum

La Plata County 416 Fire Recovery Efforts and Opportunities

Jordan Dimick, PE Senior Engineer

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SLIDE 2

416 Fire 416 Fire Recovery Recovery Efforts and Opportun Efforts and Opportuniti ities March 12, 2020

  • 416 Fire started on

June 1, 2018 about 10 miles north of Durango

  • Estimated 54,000

acres burned

  • Generally the burn

severity was moderate to low

Intr Introdu

  • ducti

tion

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SLIDE 3

416 Fire 416 Fire Recovery Recovery Efforts and Opportun Efforts and Opportuniti ities March 12, 2020

10 EWP Program Complexes

1. Upper Tripp Creek 2. Locke’s Mountain 3. Hwy 550 4. Honeyville 5. Lower Hermosa Creek 6. Flying S 7. Lower Tripp Creek 8. Irongate/KOA 9. Pine Acres

  • 10. Dyke Canyon

Summar Summary o

  • f 416

416 Fire Emer Emergenc gency W y Watershed Pr hed Prot

  • tec

ecti tion (E

  • n (EWP)

WP) Pr Progr

  • gram

10 1 5 7 5 2 9 3 4 8 6

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SLIDE 4

416 Fire 416 Fire Recovery Recovery Efforts and Opportun Efforts and Opportuniti ities March 12, 2020

Co Completed Pr

Projec ects – ts – Upper T pper Tripp Cr ipp Creek eek

  • Debris removal
  • Channel stabilization
  • Placement of riprap
  • Installation of concrete

block barriers

  • Storm debris catchment

basin

  • Debris rack installation
  • Water delivery structures
  • Revegetation
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SLIDE 5

416 Fire 416 Fire Recovery Recovery Efforts and Opportun Efforts and Opportuniti ities March 12, 2020

Co Completed Pr

Projec ects - ts - Hone

  • neyville

lle

  • Debris removal
  • Channel stabilization
  • Placement of riprap
  • Installation of concrete

block barriers

  • Debris rack installation
  • Revegetation
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SLIDE 6

416 Fire 416 Fire Recovery Recovery Efforts and Opportun Efforts and Opportuniti ities March 12, 2020

Co Completed Pr

Projec ects – ts –

Lo Lower H Hermosa C Creek

  • Hillside stabilization

through revegetation

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SLIDE 7

416 Fire 416 Fire Recovery Recovery Efforts and Opportun Efforts and Opportuniti ities March 12, 2020

Pr Projec ected 20 ted 2020 20 Pr

Projec ects – ts – Lower T er Tripp Cr ipp Creek eek

  • Debris removal
  • Channel stabilization
  • Placement of riprap
  • Installation of concrete block barriers
  • NOAQ box walls
  • Sandbag barriers
  • Earthen berms
  • Water delivery structures
  • Watertight gates
  • Revegetation
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SLIDE 8

416 Fire 416 Fire Recovery Recovery Efforts and Opportun Efforts and Opportuniti ities March 12, 2020

Pr Projec ected 20 ted 2020 20 Pr

Projec ects – ts – Highway 5 550

  • Debris removal
  • Channel clearing and shaping
  • Channel stabilization
  • Placement of riprap
  • Installation of concrete block barriers
  • Revegetation
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SLIDE 9

416 Fire 416 Fire Recovery Recovery Efforts and Opportun Efforts and Opportuniti ities March 12, 2020

Pr Projec ected 20 ted 2020 20 Pr

Projec ects – ts – Irongat ngate and K e and KOA

  • Debris removal
  • Channel clearing and shaping
  • Placement of riprap
  • Debris rack installation
  • Concrete low water crossing
  • Installation of concrete barriers
  • Sandbag barriers
  • Earthen berms
  • Watertight gates
  • Revegetation
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SLIDE 10

416 Fire 416 Fire Recovery Recovery Efforts and Opportun Efforts and Opportuniti ities March 12, 2020

Pr Projec ected 20 ted 2020 20 Pr

Projec ects – ts – Pine A ine Acres

  • Debris removal
  • Channel clearing and shaping
  • Placement of riprap
  • Debris rack installation
  • Concrete low water crossing
  • Installation of concrete barriers
  • Earthen berms
  • Watertight gates
  • Revegetation
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SLIDE 11

416 Fire 416 Fire Recovery Recovery Efforts and Opportun Efforts and Opportuniti ities March 12, 2020

Pr Projec ected 20 ted 2020 20 Pr

Projec ects – ts –

Dyk Dyke C Canyon

  • n
  • Debris removal
  • Channel clearing and shaping
  • Channel stabilization
  • Placement of riprap
  • Debris rack installation
  • Installation of concrete block barriers
  • Watertight gates
  • Sandbag barriers
  • Earthen berms
  • Revegetation
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SLIDE 12

416 Fire 416 Fire Recovery Recovery Efforts and Opportun Efforts and Opportuniti ities March 12, 2020

CW CWCB P CB Post-416 F 16 Fire W Water tershed R hed Restor

  • rati

ation Pr n Progr

  • gram

Focus on protecting/restoring the watershed health, stream function, and ecological processes:

  • Channel stabilization
  • Habitat improvement
  • Improve recreational
  • pportunities
  • Provide fish passage
  • Revegetation
  • Reduce erosion
  • Log erosion barriers
  • Rehabilitate stream

channels/floodplains

  • Stream gauging
  • Early warning

detection systems

  • Remote telemetry

systems

  • Debris catchment with

proper O&M

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SLIDE 13

416 Fire 416 Fire Recovery Recovery Efforts and Opportun Efforts and Opportuniti ities March 12, 2020

CW CWCB P CB Post-416 F 16 Fire W Water tershed R hed Restor

  • rati

ation Pr n Progr

  • gram
  • CWCB approach:
  • 1. Identify areas of risk
  • 2. Identify the source areas
  • 3. Identify the transport mechanisms
  • 4. Identify the depositional areas
  • 5. Assess and prioritize projects
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SLIDE 14

416 Fire 416 Fire Recovery Recovery Efforts and Opportun Efforts and Opportuniti ities March 12, 2020

CW CWCB P CB Post-416 F 16 Fire W Water tershed R hed Restor

  • rati

ation Pr n Progr

  • gram
  • BAER Identified areas of risk

– Bell Canyon – Dyke Canyon – S. Fork of Falls Creek – Glacier Club drainages – Tripp Creek – Buck Hollow

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SLIDE 15

416 Fire 416 Fire Recovery Recovery Efforts and Opportun Efforts and Opportuniti ities March 12, 2020

CW CWCB P CB Post-416 F 16 Fire W Water tershed R hed Restor

  • rati

ation Pr n Progr

  • gram
  • Identification of source areas and transport

mechanisms:

– Moderate to high severity burn areas – Steeper slopes – Rainfall

  • Increased rainfall intensity results in bigger floods

– Snowmelt and runoff

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SLIDE 16

416 Fire 416 Fire Recovery Recovery Efforts and Opportun Efforts and Opportuniti ities March 12, 2020

CW CWCB P CB Post-416 F 16 Fire W Water tershed R hed Restor

  • rati

ation Pr n Progr

  • gram
  • Identification of depositional areas:

– USFS lands – Private property – 416 Fire EWP complex areas – Hermosa Creek – Animas River

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SLIDE 17

416 Fire 416 Fire Recovery Recovery Efforts and Opportun Efforts and Opportuniti ities March 12, 2020

CW CWCB P CB Post-416 F 16 Fire W Water tershed R hed Restor

  • rati

ation Pr n Progr

  • gram
  • Identification of potential projects:

– Reseed and vegetate moderate to high severity burn areas on steep hillsides – Development of bio-islands (e.g. willow clumps) – Laying back incised channel banks to increase the riparian edge and revegetating corridor – Rain gages, early warning detection systems with text/call alerts – Debris rack with on-going maintenance on Tripp Creek

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SLIDE 18

416 Fire 416 Fire Recovery Recovery Efforts and Opportun Efforts and Opportuniti ities March 12, 2020

CW CWCB P CB Post-416 F 16 Fire W Water tershed R hed Restor

  • rati

ation Pr n Progr

  • gram
  • Sticky note map exercise
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SLIDE 19

416 Fire 416 Fire Recovery Recovery Efforts and Opportun Efforts and Opportuniti ities March 12, 2020

CW CWCB P CB Post-416 F 16 Fire W Water tershed R hed Restor

  • rati

ation Pr n Progr

  • gram
  • Announcement for the Watershed

Restoration Program Planning Workshop

– April 2, 2020 (5:30 to 7:30 pm) Fairgrounds – Focus will be to develop specific conceptual projects and to prioritize:

  • Watershed needs
  • Project areas
  • Project importance
  • Cost effectiveness of mitigation projects