BirdTrout

Grass River Watershed, New York

1,640 miles of mapped stream across 641 square miles of drainage in St. Lawrence county, in 74 named streams. New York designates 325 of those miles as trout water, on 56 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 04290004 in the USGS Watershed Boundary Dataset. Every figure below adds up the river pages in this basin — same records, one basin at a time.

1,640 mi
of mapped stream
4,960 NHD reaches
641 sq mi
drainage area
410,041 acres
30,497 ac
public land
7.4% of the basin · 17 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 33% of this basin's stream miles (538.5 of 1,640); the rest is untyped and is drawn grey on the map above.

538.5 of the 538.5 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 33% of it.

Every named stream in the basin

All 74 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
Grass River 76.1 Cold — Class C — fishing
South Branch Grass River 49.4 Cold — Class C — fishing
North Branch Grass River 30.7 Cold — Class C — fishing
Little River 21.7 Cold — Class C — fishing
Tracy Brook 21.6 Cold — Class C — fishing
Elm Creek 21.3 Cold — Class C — fishing
Plumb Brook 19.6 Cold — Class C — fishing
Dead Creek 16.5 Cold — Class C — fishing
Middle Branch Grass River 15.3 Cold — Class C — fishing
Tanner Creek 14.8 untyped — —
Grannis Brook 14.0 Cold — Class C — fishing
Carter Creek 9.7 untyped — —
Line Creek 9.3 untyped — —
Blue Mountain Stream 9.2 Cold — Class C — fishing
Leonard Brook 8.9 Cold — Class C — fishing
Gulf Brook 8.1 Cold — Class C — fishing
Boyden Brook 7.8 Cold — Class C — fishing
Nettle Creek 7.7 untyped — —
Van Rensselaer Creek 7.1 Cold — Class AA — drinking water source
Pleasant Lake Stream 6.9 Cold — Class C — fishing
Bear Creek 6.1 Cold — Class C — fishing
Dean Brook 6.1 Cold — Class AA — drinking water source
Colton Creek 5.9 Cold — Class C — fishing
Orebed Creek 5.7 Cold — Class C — fishing
Windfall Brook 5.6 Cold — Class C — fishing
Buck Brook 5.4 Cold — Class C — fishing
Baldwin Branch 5.3 untyped — —
Jocks Pond Outlet 5.0 Cold — Class C — fishing
Pleasant Creek 4.9 Cold — Class C — fishing
Moosehead Pond Outlet 4.7 Cold — Class C — fishing
Dodge Creek 4.6 untyped — —
Mill Brook 4.5 Cold — Class C — fishing
Harrison Creek 4.5 untyped — —
Alder Brook 4.2 Cold — Class C — fishing
Brandy Brook 4.2 untyped — —
Cedar Lake Stream 4.1 Cold — Class C — fishing
Bend Brook 4.0 Cold — Class C — fishing
Deer Lick Brook 4.0 untyped — —
Mud Brook 3.7 Cold — Class C — fishing
Bullock Creek 3.7 untyped — —
O'Brien Brook 3.6 Cold — Class C — fishing
Stony Brook 3.4 Cold — Class C — fishing
Massena Power Canal 3.4 untyped — —
Cook Pond Outlet 3.3 Cold — Class C — fishing
Second Brook 3.2 Cold — Class C — fishing
Deerskin Creek 3.1 Cold — Class C — fishing
South Brook 3.0 Cold — Class C — fishing
Black Brook 3.0 Cold — Class C — fishing
Irish Brook 2.9 Cold — Class C — fishing
Conkey Branch 2.9 Cold — Class C — fishing
Sampson Pond Outlet 2.8 Cold — Class C — fishing
Big Brook 2.6 Cold — Class C — fishing
Tuttle Brook 2.5 Cold — Class C — fishing
Taylor Creek 2.5 Cold — Class AA — drinking water source
Silver Brook 2.4 Cold — Class C — fishing
Mink Brook 2.3 Cold — Class C — fishing
Burntbridge Outlet 2.3 Cold — Class C — fishing
Randall Brook 2.3 untyped — —
Newton Falls Brook 2.1 untyped — —
Cancross Creek 2.1 Cold — Class C — fishing
Twin Ponds Outlet 2.0 Cold — Class C — fishing
Allen Pond Outlet 1.9 Cold — Class C — fishing
Edmond Brook 1.9 Cold — Class C — fishing
McConnell Creek 1.9 untyped — —
First Brook 1.8 untyped — —
Webb Creek 1.7 Cold — Class C — fishing
Tamarack Branch 1.6 Cold — Class C — fishing
Berry Brook 1.6 untyped — —
Roaring Brook 1.4 untyped — —
Steep Bank Brook 1.4 Cold — Class C — fishing
La Rock Creek 1.4 untyped — —
Allen Brook 1.3 Cold — Class C — fishing
Cold Brook 1.3 Cold — Class C — fishing
Gibbons Brook 1.3 Cold — Class C — fishing

Public land in the watershed

30,497 acres in 17 units, which is 7.4% of the 410,041 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 conservation department 30,463 100% 16
County land 34 0% 1

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.

Neighbouring watersheds

The subbasins that share a boundary with this one and carry coldwater streams.