Development of Stormwater Management Plan & Site Plan

For any development or redevelopment in the City of Woonsocket we require the development and submittal of a Stormwater Management Plan with any kind of preliminary plan.

Conventional dry detention basins do not provide a permanent pool and are not recommended for general application use to meet water quality criteria, as they fail to demonstrate an ability to meet the majority of the water quality goals. In addition, dry detention basins are prone to clogging and re-suspension of previously settled solids and require a higher frequency of maintenance than wet ponds if used for untreated stormwater flows. These facilities can be used in combination with appropriate water quality controls to provide channel protection, and over bank and extreme flood storage.

This Stormwater Management Plan should address, at a minimum, the following steps:

  1. You are required to incorporate and address Treatment-Train concepts in the plan. See Woonsocket BMP Manual for explanation of Treatment-Train and Best Management Practices.
  2. Preserve and utilize the natural drainage system wherever possible: Designing around the natural lay of the land and natural vegetation such as tree lines and stream buffers defined in a site analysis; Design the development to fit into the terrain and minimize the land disturbance. See Low Impact Development Center.
  3. Integrate water quality and water quantity aspects of the site during the preliminary site plan: required landscape areas/open space can and should be incorporated into the Treatment-Train/stormwater system.
  4. Schedule a pre-application meeting with Woonsocket City Planners, Stormwater, Engineering and other city departments, as necessary, during the early part of your concept.
  5. Identify on the plans (on or off-site) the streams, springs, wetlands or sink holes that may potentially to be affected by this project.
  6. Through the use of various techniques, reduce and disconnect impervious surface area.
  7. Where possible, preserve and use native vegetation. Native vegetation grows better and may require less water and fertilizer and has deeper roots to hold soil in place.