Eleven projects benefiting the Sudbury River watershed have been selected to receive $3.7 million from a settlement related to the Superfund cleanup of the Nyanza Chemical Co. site. Nyanza, which operated a dye factory off Megunko Road, dumped between 45 and 57 metric tons of mercury and other hazardous substances into the Sudbury River system over several decades. The 35-acre site was fenced off by the Environmental Protection Agency in 1985 to prevent public access. The 11 projects will help restore migratory and coldwater fish habitats; conserve land for wildlife habitats; enable public access to riverways in Ashland and Sudbury; create a nature preserve in Framingham and Ashland; and control invasive aquatic weeds . A copy of the final restoration plan and environmental assessment will be available at the Ashland Public Library and online at the state Department of Environmental Protection’s website,  www.mass.gov/dep/cleanup/sites/nrd/nrdny.htm .