Osborndale State Park - 350 acre park located in Derby and Ansonia, offering picnicking, hiking, fishing, and ice skating. Beach Watch: New Haven County - Information on the quality of beach water and any advisories or closings in effect for the regions beaches. Provided by the National Health Protection Survey of Beaches office of the EPA. New Haven County Extension Center - Information on center which is a program of the University of Connecticut College of Agriculture and Natural Resources. Central Long Island Sound Disposal Site - Locator map of offshore dredged material disposal site south of East Haven that is managed and monitored by the New England District of the Army Corps of Engineers. Hop Brook Lake Flood Risk Management Project - From the US Army Corps of Engineers. Land Contamination Report for New Haven County - Maps locating potential sources of land contamination, rankings, data summary, and common contaminants. Information provided by the Environmental Defense Fund.