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Perkiomen Creek, Pennsylvania

15.8 mapped river miles, draining 36 square miles, in the Schuylkill River basin watershed. A USGS gauge stands in it, but its record is too short for a measured July mean, so what this page knows about its temperature is today's reading and PA DEP's classification of the water itself.

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 the river, and of every dot on it

50°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.

The nearest live reading

This gauge stands in Perkiomen Creek. Its record is too short for a July mean, so the class below is PA DEP's — but the reading is this water.

64.8 °F
Perkiomen Creek At Graterford, Pa
on this water · 243 cfs · read 30 Sep, 9:15 am ET
Cool

Thermal classification

PA DEP's classification of this water, reach by reach. A class, not a temperature — no July mean, because none was measured here.

Reach Typed miles Band PA DEP type
RM 15.8–15.0 2.0 cool —
RM 15.8–15.8 2.3 cold —
RM 15.8–7.3 8.9 cool —
RM 7.3–0.0 21.4 warm —

PA DEP has classified 34.6 of the 40 miles NHD carries for this stream — 87% of it. The typed water splits 21.4 mi warm, 10.9 mi cool, 2.3 mi cold. The untyped reaches are not warm water — they are water PA DEP's inventory does not reach, and the mile ranges above span only the reaches it does.

Questions about this river

PA DEP classification

PA DEP classifies this water as Cold Water Fishes, Trout Stocking, and Warm Water Fishes. More than one class appears because the classification changes along the river. The thermal bar above shows where. The management tier on those reaches is Cold Water Fishes, Trout Stocking, Warm Water Fishes. This is a designation of the fishery, not the season and creel rules — those change yearly and live with the agency.

Public land on the river

16 units of public or open-access land touch this river, 10,880 acres in total. Acreage is the whole unit, not the part beside the water.

Unit Owner Acres
Green Lane Park county land 3,308
Green Lane Reservoir county land 2,421
Camelot Park county land 154
Rahmer Park city land 43
Upper Perkiomen Valley county land 524
William Rahmer Memorial Park city land 32
Spring Mountain county land 116
Foy Park county land 6
Municipal Land city land 3,529
Peevy Road Open Space city land 88

Species

PA DEP designates this as trout water — Cold Water Fishes, Trout Stocking — without naming the species. No fish survey or stocking record for this water is in the files this site reads.

Tributaries and watershed

7 named streams meet this one. Confluence miles are above the mouth; the longest twelve are listed.

Perkiomen Creek sits in HUC 8 02040203, the Schuylkill River basin, and drains 36 square miles, Strahler order 4 at the mouth. 102 NHD reaches carry the name for 39.9 miles in total — more than the 15.8 miles of drawn mainstem, because NHD counts side channels and braids as their own reaches.

Other water nearby

The closest 6 rivers on this site, straight-line from the middle of this one — not drive time.