BirdTrout
Allegheny River, New York
10.3 mapped river miles, draining 1,779 square miles, in the Upper Allegheny basin watershed.
Open in BirdTrout50°F and colder is cold, through cold-transitional and cool, to warm above 70°F — the same four bands, breaking at 58, 64 and 70°F, that the app paints. Grey is water nobody has measured.
Thermal classification
There is no USGS gauge within 40 miles of this stream in the record this site holds, so there is no live temperature on this page and no measured July mean. Everything below the bar is NYSDEC's own classification of the water.
NYSDEC's classification of this water, reach by reach. It is the same classification the map paints from, and it is a class, not a temperature: no July mean appears on this page because none was measured on this water.
| Reach | Typed miles | Band | NYSDEC type |
|---|---|---|---|
| RM 0.0–0.0 | 1.2 | cold | — |
NYSDEC has classified 1.2 of the 46 miles NHD carries for this stream — 3% of it. Every typed reach carries the same class, cold. The untyped reaches are not warm water — they are water NYSDEC's inventory does not reach, and the mile ranges above span only the reaches it does.
NYSDEC classification
NYSDEC classifies this water as Class B — swimming and contact recreation and Class C — fishing. More than one class appears because the classification changes along the river; the thermal bar above shows where. On those reaches DEC also designates it trout waters — which is the half of the classification that is about temperature, and the half this map paints by. The class is a designation of best usage under 6 NYCRR — what the water is protected for — and not the season and creel rules, which change yearly and live with the agency.
NYSDEC water quality classifications and standards →
Public land on the river
2 units of public or open-access land touch this river, 28 acres in total. Acreage is the whole unit, not the part beside the water.
| Unit | Owner | Acres |
|---|---|---|
| City Of Olean Land | city land | 27 |
| City Of Olean-S Union St Pk Land | city land | 1 |
Tributaries and watershed
8 named streams meet this one. Confluence miles are above the mouth; the longest twelve are listed.
- Dodge Creek 16.6 mi · RM 9.7
- Haskell Creek 14.7 mi · RM 6.2
- Olean Creek 8.9 mi · RM 4.2
- Twomile Creek 6.0 mi · RM 1.2
- Fourmile Creek 5.8 mi · RM 0.0
- Wayman Branch 5.2 mi · RM 8.0
- Lillibridge Creek 3.4 mi · RM 9.2
- Kings Brook 3.3 mi · RM 4.9
Allegheny River sits in HUC 8 05010001, the Upper Allegheny basin, and drains 1,779 square miles, Strahler order 7 at the mouth. 112 NHD reaches carry the name for 46.0 miles in total — more than the 10.3 miles of drawn mainstem, because NHD counts side channels and braids as their own reaches.