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This presentation provides general design guidance and performance criteria that apply to the design and construction of stormwater ponds and wetlands. A series of 20 standard features of ponds and wetlands are discussed in detail. It is assumed that the user has some design background and is familiar with general terminology associated with stormwater treatment practices.
Ponds and wetlands are stormwater treatment practices that generally provide both water quality and water quantity storage. Water quality storage volume should be at least equivalent to the entire water quality volume through a combination of a permanent pool, extended detention or shallow marsh. Design variations include: micropool extended detention ponds, wet ponds, wet extended detention ponds, multiple pond systems, and pocket ponds. Dry extended detention ponds that have no permanent pool are not considered to be acceptable for meeting water quality goals; however, dry ponds may have a role in providing flood control and channel protection storage.
The following four slides are examples of the various types of designs.