Stormwater capital improvement projects (CIP) are necessary to alleviate problems caused by existing development, as well as to prevent future problems that could result from planned development. In the Public Works Department's Natural Resources Division, typical capital improvements are aimed at constructing natural (streams and wetlands) or built (pipes and pond) elements to convey, detain, and treat stormwater runoff from developed properties without causing erosion of streams or degradation of water quality that would be harmful to fish and wildlife.
This program develops a "master list" of needed projects including both funded and unfunded projects. The costs, staff time and other resource needs associated with identified projects far exceed the amount of funding and resources available. Only projects that provide a public benefit or are a public responsibility are included.
This program does not include projects that are routine maintenance, or private responsibility. The projects listed are intended to meet the goals of the Stormwater Utility, the Natural Resources Division, the Public Works Department, and the City of Redmond.
Stormwater Capital Improvement Projects are divided into four categories, each with their own objectives and rating criteria:
- Habitat projects address the needs of the natural systems within the City. Project types include stream stabilization and enhancement, habitat rehabilitation, fish passage improvement, and buffer enhancement.
- Stormwater projects address the man-made elements including conveyance, flooding, stormwater quality treatment, and stormwater flow control. Stormwater quality treatment is aimed at protecting surface water (streams, the river and the lake) and groundwater (the City's drinking water resource).
- Neighborhood projects are small localized projects that impact residential customers, cost is less than $40,000, and are the result of inadequate stormwater collection or conveyance systems.
- Regional Facility projects address water quality treatment and detention facilities, and large conveyance systems, strategically located within the watershed to accommodate public and private developments upstream in a comprehensive and coordinated approach. These projects are substantially funded by new development through the City's Regional Facilities Program.
The overall CIP document is updated periodically in preparation for the next budget cycle. During each biennial budget cycle Council selects projects which should be included in the next two-year budget and which projects should be included on the six-year CIP list. The CIP is a planning tool that is subject to revision as new projects are identified or existing problems change in severity or extent.