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| Pine Island Pond |
Location: East of Brown Avenue and abutting Manchester Airport to the west, in south Manchester
Type of Waterbody: Artificial pond created by impoundment of Cohas Brook
Inlet/Outlet: Cohas Brook, beginning in the Great Cohas Swamp near Crystal Lake, and emptying into the Merrimack River adjacent to the Airport in south Manchester
Watershed Area: 44,200 acres (17,889 hectares)
Waterbody Size: 42.4 acres (17.16 hectares)
Volume of Water: 265,000 m3
Average Water Depth: 4.9 feet (1.5 meters)
Maximum Water Depth: 15.1 feet (4.6 meters)
Shoreline Length: 11,103 feet (3,385 meters)
Elevation: 151 feet
Percent of Watershed Ponded: 7.7%
Flushing Rate: 326 times/year
Uses: Boating, fishing, occasional swimming
Amenities Pine Island Park playground and trails
Local History: Was home to a popular amusement park "Pine Island Park" from 1902-1962
Lake Association: Pine Island Pond Environmental Society (PIPES)
Water Quality Reports & Graphs:
Water Quality Monitoring Information
NH DES VLAP Reports: 2000, 2002, 2003, 2004, 2005
Water Quality Data Graphs
Restoration Projects:
Pond Project Prioritization Status Report
Fact Sheets:
Pine Island Pond Facts
History of Pine Island Pond
Common Exotic Plants of Pine Island Pond
Common Fish at Pine Island Pond
Sampling Station Map:
Pine Island Pond
Bathymetric Depth Map:
Pine Island Pond
Vegetation Inventory
Pine Island Pond Vegetation Inventory.
Studies:
Fish Tissue Analysis
Pine Island Pond largemouth bass tissue sample analysis found chromium, manganese, selenium, zinc and mercury. None of these metals were found in high enough concentrations to constitute a health risk to humans, with the exception of mercury. Consumption of fish caught at Pine Island Pond could be a risk to human health, due to the high mercury levels, particularly in women and children. No other contaminants tested were found above detectable limits.
Sediment Sample Analysis
Pine Island Pond sediment core samples showed elevated levels of chromiun, copper, lead, manganese, mercury, nickel and zinc. All of these metals exceeded the “lowest effects level” but not the “severe effects level” criteria for aquatic organisms. The pesticide DDT constituent, p,p’-DDE also exceeded the “lowest effects level” for aquatic organisms. These pollutants most likely originate from the large commercialized areas of the Pine Island Pond watershed.
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