A new small works program was initiated in 2017, aimed at addressing smaller-scale, low-cost construction and maintenance projects. All small works projects identified in the subwatershed master plans were evaluated and ranked based on time, cost, severity, access, permitting, and other factors. In 2017, video inspections of conveyance systems were conducted in several neighborhoods and drainage improvements were made, including ditch maintenance, catch basin (CB) replacements, and vault repairs. As new incidents are reported by community members, they will be investigated by the BBWARM program specialist and added to the list.


  • Henley Street Drainage Improvements (within the Cottonwood Creek channel)
    • Down-cutting has occurred through the embankment at the outfall to Cottonwood Creek
    • Improvements are designed to provide stabilization measures associated with ditch and culvert systems
    • Anticipated to start September 2019

Henley Street Drainage Improvements: Photo of the outfall to Cottonwood Creek

  • Terrill Drive Drainage Improvement
    • Removed a collapsed drain pipe and installed a new pipe and catch basin
    • Completed on April 16, 2019

Terrill Drive: The NPDES Maintenance & Operations (M&O) crew removed a rotten and collapsed storm drain pipe within the road right-of-way on Terrill Drive and installed a new pipe and catch basin on April 15-16.


  • Drainage improvements on:
      • Cedar Street
      • Deer Trail
      • Cottonwood Drive at Idlesse Condominiums
  • Fir Street catch basin and culvert placement
  • Alder Street jetting, pipe replacement, and catch basin repair
  • Henley Street jetting and culvert video inspection
  • Birch Bay Drive lid replacement on buried vault
  • Halverson Park/Alder Street ditch stabilization (photo right)
  • Beach Way Drive ditch maintenance and catch basin repair
  • Cottonwood Creek bank stabilization
  • Residential connection to stormwater conveyance system

on Birch Bay Drive

The county’s M&O crew worked to stabilize a severely incised ditch that deposits stormwater into Halverson Park Creek. Channel armoring will help slow the water, reduce erosion, and decrease sediment transport into the creek.


  • Drainage improvements on:
      • Anderson Road
      • Birch Bay RV Campground
      • Holeman Avenue
      • Fir, Alder & Beach Way
  • Birch Bay Drive buried vault repair
  • Henley & Ritchie catch basin replacement
  • Comfort Lane catch basin replacement
  • Responding to public inquiries and requests for drainage facility maintenance

Existing catch basin structures (left) and their replacements (right).

Video inspection of a storm main along Birch Bay Dr.