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Bitter Creek Stream Restoration

Bitter Creek Stream Restoration. Preliminary Engineering Report Neighborhood Meeting. Project Orientation. WILLIAM CANNON. BRANCHWOOD. BITTER CREEK. RIPPLE RUN. BUCKS RUN. Meeting Agenda. Introductions Creek History Current Conditions & Proposed Solutions Question & Answer.

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Bitter Creek Stream Restoration

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  1. Bitter Creek Stream Restoration Preliminary Engineering Report Neighborhood Meeting

  2. Project Orientation WILLIAM CANNON BRANCHWOOD BITTER CREEK RIPPLE RUN BUCKS RUN

  3. Meeting Agenda • Introductions • Creek History • Current Conditions & Proposed Solutions • Question & Answer

  4. Introductions • Project Sponsor, Watershed Protection Department • Janna Renfro • (512) 974-3422 • janna.renfro@austintexas.gov • Design Engineers, CH2M Hill • Heather Harris • (512) 249-3327 • heather.harris@ch2m.com • Neighbors • Name • Location

  5. Creek History – Before Development `

  6. Creek History – 1970s `

  7. Creek History – 1980s `

  8. Project Study Area `

  9. Project Areas (New Survey) = 311 Erosion Complaints 3 1 2 BITTER CREEK RALEIGH CIR BRANCHWOOD BUCKS RUN

  10. Project Area 1 @ BRANCHWOOD DRIVE • Cover channel to… • Discourage dumping • Join stormdrains • Improve safety • Increase connectivity

  11. Project Area 1 • 30’ Drainage Easement • Threatened property • Safety concerns • Steep & eroding banks • Minimal natural function • Incised channel

  12. Project Area 1 • Recommended Solution • Raise Channel Bed (3 – 6 ft) • Tiered Channel • 2 ft pilot channel • 4 ft floodplain bench • 8 ft total depth • Vegetated Banks • Rock Bottom • Continuous over ~600 ft Existing 30’ Easement

  13. Project Area 1

  14. Project Areas = 311 Erosion Complaints 3 1 2 BITTER CREEK RALEIGH CIR BRANCHWOOD BUCKS RUN

  15. Transition 2 1 Similar Project • Recommended Solution • Grade Control Structure(s) to make elevation change Similar Project

  16. Project Area 2 • Wider channel • Wider easements • Some stable areas • Isolated severe erosion spots

  17. Project Area 2 • Too wide • Deflections • Debris • Trash • Invasive vegetation

  18. Project Area 2 • Recommended Solution • Clean up channel • Provide defined flow path • Passive restoration • Improve quality of vegetation

  19. Project Area 2 Bank erosion on Area 2 • Recommended Solution • Spot fixes for severely eroded banks Similar Project

  20. Project Area 2 Side gully on Area 2 • Recommended Solution • Spot fixes for side gully formations Similar Project

  21. Project Area 2 Outfall Erosion on Area 2 Similar Project • Recommended Solution • Spot fixes for failing and eroded outfalls

  22. Project Area 2 • Recommended Solution • Assess condition of existing projects

  23. Project Areas = 311 Erosion Complaints 3 1 2 BITTER CREEK RALEIGH CIR BRANCHWOOD BUCKS RUN

  24. Project Area 3 • Recommended Solution • Evaluate improvements to enhance water quality downstream

  25. Project Areas 1 Continuous, Engineered & Vegetated Channel 2 Clean-up, Spot fixes, & Passive Restoration 3 3 Pond Improvements for Water Quality 1 2 BITTER CREEK RALEIGH CIR BRANCHWOOD BUCKS RUN

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