Sediment dynamics and implications for management: State of the science from long‐term research in the Chesapeake Bay watershed, USA

• DOI: 10.1002/wat2.1454
• Publication Date: 2020-06-22T05:48:47Z
• Authors: Gregory B. Noe; Matthew J. Cashman; Katie Skalak; Allen Gellis; Kristina G. Hopkins; Doug Moyer; James Webber; Adam Benthem; Kelly Maloney; John Brakebill; Andrew Sekellick; Mike Langland; Qian Zhang; Gary Shenk; Jeni Keisman; Cliff Hupp
• Keywords: Sedimentary budget; Chesapeake bay

Abstract This review aims to synthesize the current knowledge of sediment dynamics using insights from long‐term research conducted in watershed draining Chesapeake Bay, largest estuary U.S., inform management actions restore and its watershed. The are typical many impaired watersheds estuaries around world, this synthesis is intended be relevant transferable other sediment‐impaired systems. watershed's sources, transport, delivery, impacts discussed with implications for effectively implementing best practices (BMPs) mitigate issues. revealed three key issues consider when planning reduce loading: Scale, time, land use. Geology historical use generated a template that climate, addition management, acting upon control delivery. Important sources include Piedmont physiographic region, urban, agricultural use, streambank erosion headwater streams, whereas floodplain trapping important along larger streams rivers. Implementation BMPs widespread predicted lead decreased loading; however, reworking legacy stored stream valleys, potentially long residence times storage, can delay complicate detection effects on loads. In conclusion, improved understanding storage areas, transport lag reviewed here help target choices BMP types locations better manage problems—for both local receiving waters. article categorized under: Science Water > Quality Life Stresses Pressures Ecosystems Conservation, Management, Awareness