Bitter Creek Stream Restoration Preliminary Engineering Report Neighborhood Meeting.

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Presentation transcript:

Bitter Creek Stream Restoration Preliminary Engineering Report Neighborhood Meeting

Project Orientation

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

Project Sponsor, Watershed Protection Department ◦ Janna Renfro (512) Design Engineers, CH2M Hill ◦ Heather Harris (512) Neighbors ◦ Name Location Introductions

Creek History – Before Development `

Creek History – 1970s `

Creek History – 1980s `

Project Study Area `

Project Areas (New Survey) = 311 Erosion Complaints 1 2

Project Area 1 Cover channel to… Discourage dumping Join stormdrains Improve safety Increase connectivity

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

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 Project Area 1 Existing 30’ Easement

Project Area 1

Project Areas = 311 Erosion Complaints 1 2

Transition 2 Recommended Solution Grade Control Structure(s) to make elevation change 1

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

Project Area 2 Too wide Deflections Debris Trash Invasive vegetation

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

Project Area 2 Recommended Solution Spot fixes for severely eroded banks

Project Area 2 Recommended Solution Spot fixes for side gully formations

Project Area 2 Recommended Solution Spot fixes for failing and eroded outfalls

Project Area 2 Recommended Solution Assess condition of existing projects

Project Areas = 311 Erosion Complaints 1 2

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

Project Areas Continuous, Engineered & Vegetated Channel Clean-up, Spot fixes, & Passive Restoration Pond Improvements for Water Quality