Abstract: Session B  8:50 am (BACK)

Assessing Stream and Floodplain Restoration in the Eastern USA as a Stormwater Management Best Management Practice (BMP)

Drew A. Altland, P.E.
Rummel, Klepper & Kahl (RK&K)
York, Pennsylvania

Colonial era settlement of the Eastern USA from the mid-1600s to early 1900s has led to widespread stream, floodplain and riparian wetland impacts throughout the region by way of land use conversion, damming, floodplain filling, and channel straightening/relocation. From the early 1900s to present, dam breaching, stream channel incision and widening, sediment and nutrient re-suspension, and watershed urbanization have greatly compounded the deficiencies to these waterways. A brief history of these anthropogenic impacts and the resulting common geomorphic forms of modern day streams and floodplains will be presented. Based on this regional history of impact to these waterways, a hierarchy of varying stream and floodplain restoration approaches will be provided with a comparison of stormwater and geomorphic benefits afforded by each intervention approach. Techniques and case studies will be presented to quantify stormwater management benefits of stream and floodplain restoration as a BMP for both quality and quantity management controls.