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Title: Post-project monitoring of a navigation solution in a dynamic coastal environment, Smith Island, Maryland : year one of post-project monitoring
Authors: Seiple, Jacqueline A.
Spaur, Christopher C.
Altman, Safra
Balazik, Matthew T.
Santiago, Luis E.
Mensah, Daniel O.
Amarasingha, Warunika G.
Golder, Steven M.
Payson, Andrew W.
Keywords: Aquatic plants
Channels (Hydraulic engineering)
Chesapeake Bay (Md. And Va.)
Coastal engineering
Dredging spoil
Rhodes Point (Md.)
Salt marshes
Publisher: Coastal and Hydraulics Laboratory (U.S.)
Engineer Research and Development Center (U.S.)
Series/Report no.: Technical Report (Engineer Research and Development Center (U.S.)) ; no. ERDC/CHL TR-20-14
Abstract: In 2018, jetties and a sill were constructed by the US Army Corps of Engineers (USACE) adjacent to the Sheep Pen Gut Federal Channel at Rhodes Point, Smith Island, Maryland. These navigation improvements were constructed under Section 107 of the Continuing Authorities Program. Material dredged for construction of the navigation structures and realignment of the channel were used to restore degraded marsh. Following construction and dredging, 1 year of post-project monitoring was performed to evaluate the performance of navigation improvements with respect to the prevention of shoaling within the Sheep Pen Gut channel, shoreline changes, and impacts to submerged aquatic vegetation (SAV). Given the short period of record after the completion of the navigation improvements, it was difficult to draw conclusions regarding stability of the channel, structures, and shoreline. Therefore, this report documents methodology and baseline conditions for monitoring, except for SAV, which was found to be potentially impacted by construction. A second year of monitoring was funded by the USACE Regional Sediment Management Program for fiscal year 2020. Findings can be used to inform plan formulation and design for USACE navigation projects by illuminating considerations for placement of structures to prevent shoaling and by informing SAV management decisions.
Description: Technical Report
Gov't Doc #: ERDC/CHL TR-20-14
Rights: Approved for Public Release; Distribution is Unlimited
Appears in Collections:Technical Report

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