BirdTrout

Lower Susquehanna-Swatara Watershed, Pennsylvania

3,236 miles of mapped stream across 1,876 square miles of drainage in Cumberland, Dauphin, Perry, Lebanon, Schuylkill, Franklin, York, Berks counties, in 187 named streams. Pennsylvania designates 824 of those miles as trout water, on 125 streams. The 5 mainstem gauges with a July record read between 72.5 and 75.9°F in July.

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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 PA DEP's own classification of the stream, not a measurement, except at the gauge dots, which read live. Grey is water PA DEP has not typed.

The watershed in numbers

HUC8 02050305 in the USGS Watershed Boundary Dataset. Every figure below adds up the river pages in this basin — same records, one basin at a time.

3,236 mi

of mapped stream

8,487 NHD reaches

1,876 sq mi

drainage area

1,200,923 acres

72.5–75.9°F

July water temperature at the gauges

5 mainstem gauges, mean 74.6°F

0 ac

public land

15 units

Cold, cool and warm water

Pennsylvania publishes no thermal class. What PA DEP publishes is a Chapter 93 designated use — Cold Water Fishes, Trout Stocking, Warm Water Fishes and the rest — which names the fishery a stream is protected for. It is the closest any agency here comes to a temperature without being one, and docs/pa-thermal-fit.md is where the distinction is measured rather than asserted. It covers 98% of this basin's stream miles (3162.9 of 3,236); the rest is untyped and is drawn grey on the map above.

Cold 1431.7 mi (45%)
Cool 274.9 mi (9%)
Warm 1456.4 mi (46%)

1431.7 of the 3162.9 typed miles in this basin — 45% — are cold or cold-transitional water. The dominant class is warm.

Every named stream in the basin

All 187 of them, longest first. 12 have a page of their own and are linked; the rest are in the app. The class column is PA DEP's designation of that stream. "Now" is the live USGS reading where a gauge stands in that stream.

Stream	Miles	Class	Now	Designation
Conodoguinet Creek	111.1	Warm	—	Cold Water Fishes
Swatara Creek	78.3	Warm	—	Cold Water Fishes
Yellow Breeches Creek	58.1	Cold	—	Cold Water Fishes
Shermans Creek	55.7	Warm	—	Cold Water Fishes
Union Canal	39.9	Warm	—	—
Fishing Creek	36.7	Warm	—	Cold Water Fishes, Trout Stocking
Susquehanna River	35.8	Warm	—	—
Clark Creek	31.9	Cold	—	Cold Water Fishes
Little Swatara Creek	27.6	Cold	—	Cold Water Fishes
Trout Run	27.2	Cold	—	Cold Water Fishes
Conewago Creek	25.0	Cool	—	Trout Stocking
Stony Creek	23.9	Cold	—	Cold Water Fishes
Mountain Creek	21.9	Cold	—	Cold Water Fishes, Trout Stocking
Laurel Run	20.6	Cold	—	Cold Water Fishes
Manada Creek	17.3	Cold	—	Cold Water Fishes
Quittapahilla Creek	16.8	Cool	—	Trout Stocking
Muddy Run	16.7	Warm	—	—
Paxton Creek	15.9	Warm	—	—
Spring Creek	15.5	Cold	—	Cold Water Fishes
Burd Run	15.3	Cold	—	Cold Water Fishes
Little Juniata Creek	14.7	Cold	—	Cold Water Fishes
Doubling Gap Creek	12.4	Cold	—	Cold Water Fishes
Lower Little Swatara Creek	12.2	Cold	—	Cold Water Fishes
Upper Little Swatara Creek	11.5	Cold	—	Cold Water Fishes
Beaver Creek	11.2	Warm	—	—
Bulls Head Branch	10.1	Cold	—	Cold Water Fishes
Bixler Run	9.6	Cold	—	Cold Water Fishes
Letort Spring Run	9.4	Cold	—	Cold Water Fishes
Shaeffer Run	8.5	Cold	—	Cold Water Fishes
Montour Creek	8.4	Cold	—	Cold Water Fishes
Stony Run	8.1	Cold	—	Cold Water Fishes
Killinger Creek	7.9	Cool	—	Trout Stocking
Alexanders Spring Creek	7.8	Cold	—	Cold Water Fishes
Deep Run	7.8	Warm	—	—
Bow Creek	7.8	Warm	—	—
Middle Spring Creek	7.7	Cold	—	Cold Water Fishes
Hogestown Run	7.6	Cold	—	Cold Water Fishes
Beck Creek	7.5	Cool	—	Trout Stocking
McCabe Run	7.4	Cold	—	Cold Water Fishes
Bull Run	7.3	Cold	—	Cold Water Fishes
Paxton Run	7.3	Warm	—	—
Three Square Hollow Run	7.2	Warm	—	—
Good Spring Creek	7.2	Cold	—	Cold Water Fishes
Locust Creek	7.1	Warm	—	—
Iron Run	6.7	Warm	—	Cold Water Fishes
Black Creek	6.7	Cold	—	Cold Water Fishes
Snitz Creek	6.7	Cool	—	Trout Stocking
Indiantown Run	6.7	Cold	—	Cold Water Fishes, Trout Stocking
Dogwood Run	6.5	Cold	—	Cold Water Fishes
Furnace Run	6.2	Cold	—	Cold Water Fishes
Fowler Hollow Run	6.0	Cold	—	Cold Water Fishes
Pisgah Run	6.0	Warm	—	—
Pine Run	6.0	Cold	—	Cold Water Fishes
Mill Creek	6.0	Cold	—	Cold Water Fishes
Trindle Spring Run	5.9	Cold	—	Cold Water Fishes
Laughlin Run	5.8	Warm	—	—
Peebles Run	5.8	Warm	—	—
Elizabeth Run	5.7	Warm	—	—
Cold Spring Run	5.6	Cold	—	Cold Water Fishes
Newburg Run	5.6	Warm	—	—
Monroe Creek	5.6	Warm	—	Cold Water Fishes
Lehman Run	5.5	Warm	—	—
Brandy Run	5.5	Cold	—	Cold Water Fishes
Toms Run	5.5	Cold	—	Cold Water Fishes
Fishers Run	5.5	Cold	—	Cold Water Fishes
Back Creek	5.4	Warm	—	—
Thomson Creek	5.3	Cold	—	Cold Water Fishes
Gum Run	5.3	Cold	—	Cold Water Fishes
Hoffer Creek	5.3	Cool	—	Trout Stocking
Shultz Creek	5.1	Cold	—	Cold Water Fishes
Big Spring Creek	5.1	Cold	—	Cold Water Fishes
Swope Valley Run	5.1	Cold	—	Cold Water Fishes
Bachman Run	5.1	Cool	—	Trout Stocking
Raccoon Creek	5.1	Warm	—	—
Rock Run	5.0	Warm	—	—
Evening Branch	5.0	untyped	—	—
Rausch Creek	5.0	Cold	—	Cold Water Fishes
Cove Creek	5.0	Cold	—	Cold Water Fishes
Green Spring Creek	4.9	Cold	—	Cold Water Fishes
Mains Run	4.8	Cold	—	Cold Water Fishes
Bloser Creek	4.8	Warm	—	—
Big Spring Run	4.7	Cold	—	Cold Water Fishes, Trout Stocking
Mount Rock Spring Creek	4.7	Warm	—	—
Sears Run	4.7	Warm	—	—
Crosskill Creek	4.7	Cold	—	Cold Water Fishes
Fishing Run	4.6	Warm	—	—
Keasey Run	4.6	Warm	—	—
Tagg Run	4.6	Cold	—	Cold Water Fishes
Cedar Run	4.6	Cold	—	Cold Water Fishes
Rowe Run	4.5	Cold	—	Cold Water Fishes
Brills Run	4.3	Cool	—	Trout Stocking
Cisna Run	4.2	Cold	—	Cold Water Fishes
South Branch Laurel Run	4.2	Cold	—	Cold Water Fishes
Green Valley Run	4.2	Cold	—	Cold Water Fishes
West Branch Mount Rock Spring Creek	4.2	Warm	—	—
Earlakill Run	4.2	Warm	—	—
Nyes Run	4.2	Warm	—	—
Asylum Run	4.2	Warm	—	—
Spring Run	4.1	Warm	—	—
Lower Rausch Creek	4.1	Cold	—	Cold Water Fishes
Gingrich Run	4.1	Cool	—	Trout Stocking
Perry Furnace Run	4.0	Cold	—	Cold Water Fishes
Whisky Run	4.0	Cool	—	Trout Stocking
Bore Mill Run	4.0	Warm	—	—
Dark Run	3.9	Cold	—	Cold Water Fishes
Wertz Run	3.9	Warm	—	—
Little Conewago Creek	3.9	Cool	—	Trout Stocking
Clippingers Run	3.8	Warm	—	—
Opossum Creek	3.8	Cool	—	Trout Stocking
Hunters Run	3.7	Cold	—	Cold Water Fishes
Old Town Run	3.7	Cold	—	Cold Water Fishes
Pippins Run	3.7	Cold	—	Cold Water Fishes
Spruce Run	3.6	Cold	—	Cold Water Fishes
Oil Creek	3.6	Warm	—	—
Kellock Run	3.6	Warm	—	—
Devils Race Course	3.6	Cold	—	Cold Water Fishes
Baken Creek	3.5	Cold	—	Cold Water Fishes
Aires Run	3.5	Warm	—	—
Rattling Run	3.5	Cold	—	Cold Water Fishes
Center Creek	3.4	Warm	—	—
West Branch Fishing Creek	3.4	untyped	—	—
Stone Creek	3.4	Cold	—	Cold Water Fishes
Stillhouse Run	3.4	Cool	—	Trout Stocking
Meetinghouse Run	3.2	Warm	—	—
Little Dogwood Run	3.2	Cold	—	Cold Water Fishes
Brandywine Creek	3.2	Cool	—	Trout Stocking
Middle Creek	3.1	Cold	—	Cold Water Fishes
Iron Stone Run	3.0	Cold	—	Cold Water Fishes
Coal Run	3.0	Cold	—	Cold Water Fishes
Reeds Creek	3.0	Warm	—	—
Dothan Run	2.9	Cold	—	Cold Water Fishes
Shirley Run	2.9	Cold	—	Cold Water Fishes
Slotznick Run	2.9	Cold	—	Cold Water Fishes
Lynch Run	2.8	Cool	—	Trout Stocking
Dornbach Run	2.7	Cold	—	Cold Water Fishes
Marsh Run	2.7	Warm	—	—
Enola Run	2.6	Warm	—	—
Priest Run	2.6	Cold	—	Cold Water Fishes
Line Run	2.6	Cold	—	Cold Water Fishes
Conrad Weiser Branch	2.6	Cold	—	Cold Water Fishes
Qureg Run	2.6	Warm	—	—
Walnut Run	2.6	Warm	—	—
Gallagher Run	2.6	Cool	—	Trout Stocking
Pennsylvania Canal	2.6	untyped	—	—
Simmons Creek	2.4	Warm	—	—
Iron Ore Run	2.4	Cold	—	Cold Water Fishes
Bear Hole Run	2.4	Cold	—	Cold Water Fishes
Patterson Run	2.3	Cold	—	Cold Water Fishes
Vesle Run	2.3	Warm	—	—
Holtz Run	2.2	Warm	—	—
Beach Run	2.2	Warm	—	—
Lorberry Creek	2.1	Cold	—	Cold Water Fishes
Forge Creek	2.1	Warm	—	—
Meck Creek	2.1	Cold	—	Cold Water Fishes
East Branch Rausch Creek	2.1	Cold	—	Cold Water Fishes
Gebhard Run	2.0	Cold	—	Cold Water Fishes
Red Run	2.0	Warm	—	—
University Run	1.9	Warm	—	—
Buser Run	1.9	Warm	—	—
Panther Creek	1.8	Cold	—	Cold Water Fishes
Gold Mine Run	1.8	untyped	—	—
Buckholder Run	1.8	Cool	—	Trout Stocking
Cedar Point Run	1.7	Cold	—	Cold Water Fishes
Bowers Run	1.6	Cold	—	Cold Water Fishes
Green Run	1.6	Cold	—	Cold Water Fishes
Horting Run	1.6	Cold	—	Cold Water Fishes
Bryson Hollow Run	1.6	Cold	—	Cold Water Fishes
Koser Run	1.5	Warm	—	—
Black Spring Creek	1.5	untyped	—	—
Poplar Creek	1.4	Cold	—	Cold Water Fishes
Baird Run	1.4	untyped	—	—
Woods Creek	1.4	Warm	—	—
Ratler Run	1.4	Warm	—	—
Sage Run	1.2	Cold	—	Cold Water Fishes
Hemlock Run	1.1	Cold	—	Cold Water Fishes
Starry Brook	1.1	Warm	—	—
Millers Run	1.1	Cold	—	Cold Water Fishes
Adams Run	1.1	Cold	—	Cold Water Fishes
Salem Run	1.1	Cool	—	Trout Stocking
Lime Kiln Run	1.0	Cold	—	Cold Water Fishes
DeHaas Run	1.0	untyped	—	—
Schneck Run	0.9	Cold	—	Cold Water Fishes
Sawmill Run	0.9	Cool	—	Trout Stocking
Juniata River	0.8	untyped	—	—
Browns Run	0.7	Cold	—	Cold Water Fishes
Stumps Run	0.6	Cold	—	Cold Water Fishes
Harts Run	0.3	Cold	—	Cold Water Fishes

Public land in the watershed

0 acres in 15 units. Private inholdings carried in the same source file are excluded, here and on the map.

Managing agency	Acres	Share	Units
PGC	0	0%	15

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.