BirdTrout

Southern Long Island Watershed, New York

1,128 miles of mapped stream across 1,961 square miles of drainage in Suffolk, Nassau, Queens counties, in 140 named streams. New York designates 46 of those miles as trout water, on 20 streams.

Open in BirdTrout
Map key
Public land — where the bank is open to walk and fish
USGS gauge — live water temperature
Water temperature — the colour of every stream in the basin

50°F and colder is cold, through cold-transitional and cool, to warm above 70°F — the same four bands the app paints. On this map the colour is NYSDEC's own classification of the stream, not a measurement, except at the gauge dots, which read live. Grey is water NYSDEC has not typed.

The watershed in numbers

HUC8 02030202 in the USGS Watershed Boundary Dataset. Every figure below adds up the river pages in this basin — same records, one basin at a time.

1,128 mi
of mapped stream
6,314 NHD reaches
1,961 sq mi
drainage area
1,255,171 acres
75,470 ac
public land
6.0% of the basin · 34 units

Cold, cool and warm water

NYSDEC classifies every surface water in New York under 6 NYCRR Parts 800-941, and the class is a best usage — what the water is protected for — rather than a temperature. The temperature statement is the (T) or (TS) suffix beside it: the water DEC designates for trout, or for trout spawning, which 6 NYCRR 704.2(b) protects with a 70 °F ceiling on any discharge. That suffix is what this page counts and what the map paints by; the class letter is printed beside it and is not a thermal grade. It covers 6% of this basin's stream miles (63.4 of 1,128); the rest is untyped and is drawn grey on the map above.

63.4 of the 63.4 typed miles in this basin — 100% — are cold or cold-transitional water. Every typed reach carries the same class, which is as likely to be the coverage as the water: NYSDEC has typed 6% of it.

Every named stream in the basin

All 140 of them, longest first. 3 have a page of their own and are linked; the rest are in the app. The class column is NYSDEC's designation of that stream. "Now" is the live USGS reading where a gauge stands in that stream.

Stream Miles Class Now Designation
Peconic River 22.4 untyped — —
Carmans River 15.3 Cold — Class B — swimming and contact recreation, Class C — fishing
Mill River 10.0 untyped — —
Beaverdam Creek 8.5 untyped — —
Carlls River 7.8 Cold — Class C — fishing
Massapequa Creek 7.4 Cold — Class C — fishing
Sampawams Creek 7.3 Cold — Class C — fishing
Connetquot Brook 6.1 Cold — Class B — swimming and contact recreation, Class C — fishing
Milburn Creek 6.0 untyped — —
Mud Creek 6.0 Cold — Class C — fishing
Tuthills Creek 5.3 Cold — Class B — swimming and contact recreation, Class C — fishing
Connetquot River 5.3 untyped — —
East River 5.3 untyped — —
Bellmore Creek 5.2 untyped — —
Seatuck Creek 5.0 untyped — —
East Meadow Brook 4.9 Cold — Class C — fishing
Penataquit Creek 4.9 untyped — —
Swan River 4.8 Cold — Class B — swimming and contact recreation, Class C — fishing
Champlin Creek 4.8 Cold — Class C — fishing
Speonk River 4.3 untyped — —
Patchogue River 4.1 untyped — —
Cedar Swamp Creek 3.9 untyped — —
Quantuck Creek 3.9 untyped — —
Seamans Creek 3.8 untyped — —
Willetts Creek 3.8 untyped — —
Seafood Creek 3.6 untyped — —
Awixa Creek 3.6 untyped — —
Santapogue Creek 3.6 Cold — Class C — fishing
Hubbard Creek 3.6 untyped — —
West Neck Creek 3.5 untyped — —
Forge River 3.5 untyped — —
Brown Creek 3.4 Cold — Class C — fishing
Neguntatogue Creek 3.2 untyped — —
East Creek 3.2 untyped — —
Carman Creek 3.1 untyped — —
Amityville Creek 3.1 Cold — Class C — fishing
Orowoc Creek 3.1 Cold — Class C — fishing
Lawrence Creek 3.1 untyped — —
Terrys Creek 3.1 untyped — —
Freeport Creek 3.0 untyped — —
Mill Creek 3.0 untyped — —
Newbridge Creek 2.9 untyped — —
Parsonage Creek 2.8 untyped — —
Purgatory Creek 2.7 untyped — —
Indian Creek 2.7 untyped — —
Weesuck Creek 2.7 untyped — —
Little Seatuck Creek 2.6 untyped — —
Little Creek 2.5 untyped — —
Green Creek 2.5 Cold — Class C — fishing
West Brook 2.5 Cold — Class B — swimming and contact recreation, Class C — fishing
Bedell Creek 2.4 untyped — —
Aspatuck River 2.4 untyped — —
Jones Creek 2.3 untyped — —
Northwest Creek 2.3 untyped — —
Tanbark Creek 2.3 untyped — —
Motts Brook 2.2 untyped — —
West Babylon Creek 2.2 untyped — —
Trues Creek 2.2 untyped — —
Birch Creek 2.2 untyped — —
Sawmill Creek 2.1 untyped — —
Richmond Creek 2.1 untyped — —
Tiana Creek 2.1 untyped — —
Little Northwest Creek 2.1 untyped — —
Ligonee Brook 2.1 untyped — —
Abets Creek 2.0 untyped — —
Great Neck Creek 2.0 Cold — Class C — fishing
Strongs Creek 2.0 untyped — —
Reeves Creek 2.0 untyped — —
Downs Creek 2.0 untyped — —
Little Sebonac Creek 2.0 untyped — —
Moores Drain 2.0 untyped — —
James Creek 1.9 untyped — —
Deep Hole Creek 1.9 untyped — —
Narrow River 1.9 untyped — —
Woods Creek 1.8 untyped — —
Skookwams Creek 1.8 untyped — —
Thompsons Creek 1.8 untyped — —
Calf Creek 1.8 untyped — —
Namkee Creek 1.7 untyped — —
Homans Creek 1.7 untyped — —
Little River 1.7 untyped — —
West Creek 1.7 untyped — —
Wickham Creek 1.7 untyped — —
Orchard Neck Creek 1.7 untyped — —
Terrell River 1.6 untyped — —
Taylor Creek 1.6 untyped — —
Powell Creek 1.5 untyped — —
Little Neck Run 1.5 untyped — —
Quintuck Creek 1.5 untyped — —
Ludlows Creek 1.5 untyped — —
Brushs Creek 1.5 untyped — —
Oneck Drain 1.5 untyped — —
Sams Creek 1.5 untyped — —
Swan Creek 1.5 untyped — —
Yapahank Creek 1.4 Cold — Class C — fishing
Big Fish Creek 1.4 untyped — —
Pattersquash Creek 1.4 untyped — —
Heady Creek 1.4 untyped — —
Alewife Brook 1.4 untyped — —
Cedar Creek 1.3 untyped — —
Narraskatuck Creek 1.3 untyped — —
Thixton Creek 1.3 untyped — —
Heils Creek 1.3 Cold — Class C — fishing
Jockey Creek 1.3 untyped — —
Bannister Creek 1.2 untyped — —
Simmond Creek 1.2 untyped — —
Howells Creek 1.2 untyped — —
Goose Creek 1.2 untyped — —
Merrick Creek 1.1 untyped — —
Hedges Creek 1.1 untyped — —
Howell Creek 1.1 untyped — —
Old Neck Creek 1.1 untyped — —
Areskonk Creek 1.1 untyped — —
Davis Creek 1.0 untyped — —
Senix Creek 1.0 untyped — —
Ely Creek 1.0 untyped — —
Daves Creek 1.0 untyped — —
Island Creek 0.9 untyped — —
Sebonac Creek 0.9 untyped — —
Johns Neck Creek 0.9 untyped — —
Chase Creek 0.9 untyped — —
Schodack Brook 0.8 untyped — —
Lons Creek 0.8 untyped — —
Unchachoque Creek 0.8 untyped — —
Poospatuck Creek 0.8 untyped — —
Willow Brook 0.8 untyped — —
Emory Creek 0.7 untyped — —
Bridge Creek 0.7 untyped — —
Little Fish Creek 0.7 untyped — —
Stillman Creek 0.7 untyped — —
Watchogue Creek 0.7 untyped — —
Meetinghouse Creek 0.7 untyped — —
Horton Creek 0.7 untyped — —
Home Creek 0.7 untyped — —
Sheepen Creek 0.7 untyped — —
Middle Brook 0.6 Cold — Class B — swimming and contact recreation, Class C — fishing
Fosters Creek 0.6 untyped — —
Long Creek 0.5 untyped — —
Second Neck Creek 0.4 untyped — —
Rattlesnake Creek 0.4 untyped — —

Public land in the watershed

75,470 acres in 34 units, which is 6.0% of the 1,255,171 acres the basin covers. Private inholdings carried in the same source file are excluded, here and on the map.

Managing agency Acres Share Units
State park agency 33,355 44% 13
County land 13,540 18% 6
City and township land 10,781 14% 7
State conservation department 9,747 13% 3
National Park Service 3,327 4% 2
US Fish & Wildlife Service 2,511 3% 1
Local holder not recorded 2,209 3% 2

The biggest named blocks of it, each with its own page — the streams on that ground, what is open to hunt on it, and where the access sites are.