Bloedel Donovan Stormwater Retrofit

Project Overview

This project provided a stormwater retrofit for the western park portion of Bloedel Donovan Park. This area was found to have high phosphorus and fecal contamination in the areas of turf. The park had highly compacted soils and high runoff rates that were carrying contaminants to the lake. The combination of a treatment trench and conversion of shoreline to sand beaches provides the treatment mechanisms for this area. It is estimated that the 6-acre area has reached a 90% treatment goal with an approximate phosphorus reduction of 6 lbs/year.

Completed stormwater and shoreline improvement projects at Bloedel Donovan Park included onsite stormwater mitigation, the removal of existing concrete bulkhead, beach improvements, as well as expanding native planting areas.