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Nissequogue River facts for kids

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Nissequogue River
Mouth of the Nissequogue River at Long Island Sound.jpg
Mouth on Long Island Sound
Nissequogue River is located in New York
Nissequogue River
Nissequogue River is located in the United States
Nissequogue River
Country United States
State New York
Region Suffolk
District Smithtown
Physical characteristics
Main source Caleb Smith Park (at northern end of New Mill Pond)
29 ft (8.8 m)
40°50′34″N 73°13′40″W / 40.8428°N 73.2279°W / 40.8428; -73.2279
River mouth Nissequogue River State Park at Long Island Sound
0 ft (0 m)
40°54′15″N 73°13′48″W / 40.90426°N 73.23011°W / 40.90426; -73.23011
Length 8.3 mi (13.4 km), SN

The Nissequogue River is an 8.3-mile (13.4 km) long river flowing from Smithtown, New York into the Long Island Sound.

Its average discharge of 42.2 cubic feet per second (1.19 m3/s) is the most of any of the freshwater rivers on Long Island.

The river, like all other freshwater rivers on the island, is totally derived from groundwater (not from lakes).

Its name is derived from one of the Algonquian-speaking Nissequaq tribe in the area.

The river rises south of NY-454 just east of the Hauppaugue County Offices and flows into Blydenburgh Park Pond where other tributaries that come from East Hauppauge and Commack meet and are dammed at Blydenburgh Pond. The river continues in a northeasterly direction, picking up additional tributaries from the north in Caleb Smith Park in Smithtown (where special regulation trout fishing is available). It is dammed once more before becoming an estuary at NY-25 where it then flows to Kings Park, New York, entering Long Island Sound at Nissequogue River State Park. Since much of the river is an estuary canoeists travel in both directions based on the tides.

Fish found in the river include Striped Bass, Bluefish, Summer Flounder, Winter Flounder, Porgies, Eels, Brown, Rainbow and Brook Trout, Yellow Perch, Largemouth Bass, Alewives, Herring, Shad, etc.

List of crossings of the Nissequogue River

Crossings Carries Location Coordinates
Unnamed road bridge Landing Avenue Smithtown
Unnamed road bridge NY 25 / NY 25A (Main Street) '
Old Main Street Bridge Pedestrian Bridge
Unnamed railroad bridge Long Island Rail Road Port Jefferson Branch Trestle
Unnamed road bridge Mill Dam Road (Private) Blydenberg County Park
Unnamed road bridge New Mill Road (Long Island Greenbelt Trail)
Confluence with Northeast Branch at Mill Dam Pond
Unnamed Road Bridge Blydenberg County Park Driveway
Unnamed road bridge NY 454 (Veterans Memorial Highway) Hauppauge
Unnamed road Bridge Raoul Wallenberg Drive
(County Access Road)

Northeast Branch

Crossings Carries Location Coordinates
Unnamed road bridge Brooksite Drive Smithtown
Unnamed road bridge CR 15 (Maple Avenue) '
Unnamed road bridge NY 111 (Main Street) Village of The Branch
Unnamed road bridge Terrace Lane
Unnamed road bridge Branch Drive
Unnamed road bridge NY 347 (Veterans Memorial Highway) Hauppauge
Unnamed road bridge Bow Drive
(Closed to motor vehicles)
Unnamed road Bridge CR 67 (Town Line Road)
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