![]() When construction occurs, there will be truck traffic to the project sites, a temporary pipeline running between Lake Accotink and Wakefield Park, dredging equipment operating in Lake Accotink and spoils processing operations in Wakefield Park. Dredging will start in summer 2023 and run through 2026. Timeline Begin Assessmentįield studies, plan development and public meetings will take place through 2022. The project is in the concept plan development phase which will identify where activities will occur and preparation of refined cost estimates for dredging operations. The Lake Accotink dredging project will remove an estimated 500,000 cubic yards of sediment to reestablish lake depth and put in place a maintenance dredging program to sustain water quality in Accotink Creek and aesthetic and recreational benefits for county residents. Additionally, the US Environmental Protection Agency’s model for the Chesapeake Bay includes Lake Accotink and assumes that a relative trapping efficiency of about 50 percent for the lake will be maintained by Fairfax County to prevent increases in sediment entering the bay. Wasteload allocations to Fairfax County under the Accotink Creek TMDL assume different loading rates upstream and downstream of Lake Accotink. The Virginia Department of Environmental Quality (DEQ) issued a sediment total maximum daily load (TMDL) for the Accotink Creek Watershed in August 2017. ![]() ![]() The project will also help the county meet is MS4 permit requirements. Analysis in 2016 estimated that the lake is now filling up again at about 23,000 cubic yards of sediment per year. The Fairfax County Department of Public Works and Environmental Services (DPWES) partnered with FCPA to dredge the lake again in 2008. By 2001 the lake had filled up again with sediment at a rate of more than 17,000 cubic yards per year. The FCPA dredged the lake to restore capacity in 1985. The Fairfax County Park Authority (FCPA) conducted a study in 1982 showing that the lake volume had been reduced to about 25 percent of its original compacity. A second wave of development in the 1960s and 1970s added significant sediment to the lake. The US Army dredged the lake prior to transferring it to Fairfax County in 1967. Intense development in the 30 square mile watershed draining to the lake following World War II resulted in the lake losing 50 percent of its capacity. Lake Accotink was constructed by the United States Army in 1940 as a freshwater supply for Camp Humphreys (now Fort Belvoir). Educational Resources for Teachers and Students.The small island in Dredge Harbor visible from Amico’s South Overlooks is an active great blue heron rookery, hosting 100 nesting herons every March-June. While hiking the trails, visitors are likely to see white-tailed deer, cottontail rabbits, hawks and eagles soaring over, and great blue herons. One can also see an incredible diversity of other wildlife in the changing seasons. Due to the location next to the Delaware River and surrounded by water on three sides, Amico Island hosts more species of birds than any other County Park. Overlook areas are sited to capture stunning viewsheds of the waterways and marinas surrounding the park. The park also offers beautiful river vistas and wildlife observation opportunities. With upland forests, freshwater ponds and wetlands, river shoreline and meadows, visitors can enjoy hiking, biking, fishing and picnicking in a rustic natural setting at the confluence of the Rancocas Creek and Delaware River. Amico Island Park is a 55-acre peninsula featuring a diverse collection of habitats and terrain.
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