Crofton Tributary Stream Restoration Anne Arundel County, Maryland

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ANNE ARUNDEL COUNTY DEPARTMENT OF PUBLIC WORKS Crofton Tributary Stream Restoration Anne Arundel County, Maryland The regenerative stream channel system approach cost effectively transforms a degraded stream into a naturally functioning system that improves its own stability, water quality, and in-stream and riparian habitats. n 2001, Biohabitats Biohabitats’ design recon- Ievaluated a 3,500-foot long nected the channel to its degraded tributary network floodplain. This approach in Crofton, Maryland andde- eliminates high and eroding veloped three detailed stream banks, improves water quality restoration concepts. Severe and creates conditions favor- bank erosion and channel inci- able for native Anne Arundel sion into loose Coastal Plain County coastal plain biota deposits threaten adjacent while naturally controlling in- infrastructure in the residen- vasive species. The restoration tial community. Moreover, design package included cost channel incision resulted in a estimates, construction details, drawdown of the groundwater specifications and implementa- table, which changed the plant tion guidance (e.g. sequence of community, and degraded wa- operations, operation & main- ter quality, and aquatic habitat. tenance). The reconstructed portion of the channel now In 2007, Biohabitats was functions naturally. top: Post construction with awarded a contract to develop inset of initial conditions; a stream restoration design for SERVICES above & right: Restored the tributary. The goal was to Inventory & Assessments ecolog y along the stream restore watershed processes, Design including recharging the Permitting groundwater table to regener- Construction Procurement ate spring seeps. Construction Services conservation planning ecological restoration regenerative design Physiographic Province Coastal Plains Bioregion Chesapeake/Delaware Bays 800.220.0919 Watershed www.biohabitats.com Patuxent River.

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