Advertisement
Flow report

Pennsylvania River Levels & Streamflow

As of Sep 21, 2026, Pennsylvania rivers are running at 231% of normal across 262 USGS gauges — the highest is 26,900 cfs on the Ohio River At Sewickley. Live discharge, gauge height, and percent-of-normal for every USGS streamgauge in Pennsylvania.

USGS gauges
262
State percent normal
231%
Paddle runs
0
Updated
Sep 21
Open the Pennsylvania flow layer on the map Every USGS streamgauge filtered to Pennsylvania.
Open the map →
September
21
2026
Flow briefing

Streamflow levels across Pennsylvania are currently 231% of normal, with the Ohio River At Sewickley reporting the highest discharge in the state at 26,900 cfs and a gauge stage of 15.15 ft.

Meanwhile, the Tioga River At Tioga is seeing a spike today — up 115% since yesterday and currently running near peak.

Tap any gauge below for the full hydrograph, paired weather forecast, and historical context. Use the rivers panel to jump into Pennsylvania's named rivers.

Active weather warnings for Pennsylvania

# Pennsylvania Storm Center Report

Pennsylvania residents, particularly those in Northern Erie County, should exercise extreme caution near Lake Erie through Tuesday evening due to a Beach Hazards Statement issued by the National Weather Service. High rip current risks pose a significant threat to swimmers and beachgoers, with dangerous currents capable of pulling individuals away from shore. Water entry is strongly discouraged during this period. Additionally, a Flood Watch remains in effect for much of Western Pennsylvania, and an approaching nor'easter threatens the mid-Atlantic region with potential flooding, gusty winds, and beach erosion. Residents should monitor weather updates closely, avoid lakeside swimming, and prepare for possible flooding impacts across western portions of the state.

Source: National Weather Service

Pennsylvania at a glance

State-wide streamflow overview

The Pennsylvania flow picture in four data points -- where the state sits versus historical norms, what's flowing hardest, and what's spiking fastest.

Percent of normal

231%

100% is the historical norm. Below 70% indicates drought; above 130% can flag elevated flood risk.

Highest discharge

Ohio River At Sewickley 26,900 cfs

Gauge stage 15.15 ft

Biggest 24h spike

Tioga River At Tioga +115%

Now 245 cfs

Network coverage

Gauges + rivers tracked 262 + 0

USGS gauges feeding 0 named rivers in Pennsylvania.

Where every gauge actually sits

One dot per Pennsylvania streamgauge, placed by its own percent of normal. The state average is a single line through all of it.

State average 231%
0% 50% 100% · normal 150% 200%+
Much below normalunder 50% Below normal50–90% Near normal90–110% Above normal110–150% Much above normalover 150%

Percent of normal compares today's discharge with the historical average for this calendar day. Tap any dot to open that gauge.

Pennsylvania streamflow, three water years

Statewide percent of normal, every day since Sep 2023. The dotted line is normal.

231% of normal today
+198pts vs this day last year (33%)
249of 366 days below normal, past year
572% 3-year peak · Sep 2026 · above the axis
50% 100% normal 150% 200% 250%
Sep 2023 202420252026 Sep 21, 2026

799 daily readings from 262 reporting gauges. Percent of normal is today's statewide discharge against the historical average for the same calendar day — 100% is normal, not "good". The axis tops out at 250%: 25 readings above that — including the 572% peak in Sep 2026 — are drawn along the top edge, so a few flood days cannot flatten three years of everything else. The line breaks in 2 places where the record skips more than five days — those are gaps in reporting, not readings of zero.

Full streamgauge inventory

Pennsylvania USGS streamgauges

Every USGS gauge Snoflo tracks in Pennsylvania. Sortable, quickly filterable. Numeric columns heat-mapped from light to deep. Tap any gauge for its full hydrograph and forecast.

262 gauges
Streamgage Streamflow Gage height Water temp Air temp Elevation Watershed
Ohio River At Sewickley, Pa
9 hours ago · USGS 03086000
45,300 cfs 16.06 ft · 57°F 690 ft Upper Ohio
Allegheny River At Natrona, Pa
9 hours ago · USGS 03049500
24,100 cfs 12.72 ft · 56°F 747 ft Lower Allegheny
Susquehanna River At Marietta, Pa
9 hours ago · USGS 01576000
21,200 cfs 35.50 ft 43°F 59°F 237 ft Lower Susquehanna
Susquehanna River At Harrisburg, Pa
9 hours ago · USGS 01570500
18,900 cfs 4.19 ft 72°F 59°F 294 ft Lower Susquehanna-Swatara
Allegheny River At Kittanning, Pa
9 hours ago · USGS 03036500
17,500 cfs 12.04 ft · 54°F 774 ft Middle Allegheny-Redbank
Susquehanna River At Sunbury, Pa
10 hours ago · USGS 01554000
15,900 cfs 8.51 ft · 55°F 421 ft Lower Susquehanna-Penns
Allegheny River At Parker, Pa
9 hours ago · USGS 03031500
12,700 cfs 4.74 ft · 52°F 846 ft Middle Allegheny-Redbank
West Branch Susquehanna River At Lewisburg, Pa
10 hours ago · USGS 01553500
9,370 cfs 4.21 ft · 55°F 433 ft Lower West Branch Susquehanna
West Branch Susquehanna River At Allenwood, Pa
9 hours ago · USGS 01553025
8,890 cfs 9.60 ft · 70°F 451 ft Lower West Branch Susquehanna
Wb Susquehanna River At Williamsport, Pa
9 hours ago · USGS 01551500
8,270 cfs 3.73 ft · 54°F 502 ft Lower West Branch Susquehanna
Susquehanna River At Danville, Pa
9 hours ago · USGS 01540500
7,310 cfs 3.97 ft 71°F 55°F 436 ft Upper Susquehanna-Lackawanna
Allegheny River At Franklin, Pa
9 hours ago · USGS 03025500
7,300 cfs 4.67 ft 60°F 52°F 959 ft Middle Allegheny-Tionesta
Susquehanna River At Bloomsburg, Pa
9 hours ago · USGS 01538700
7,200 cfs 2.65 ft · 55°F 458 ft Upper Susquehanna-Lackawanna
Wb Susquehanna River At Jersey Shore, Pa
9 hours ago · USGS 01549760
7,010 cfs 3.76 ft · 69°F 541 ft Lower West Branch Susquehanna
Youghiogheny River At Sutersville, Pa
9 hours ago · USGS 03083500
5,690 cfs 6.73 ft 69°F 57°F 737 ft Youghiogheny
Susquehanna River At Wilkes-Barre, Pa
10 hours ago · USGS 01536500
5,500 cfs 1.91 ft · 54°F 522 ft Upper Susquehanna-Lackawanna
Kiskiminetas River At Vandergrift, Pa
9 hours ago · USGS 03048500
5,470 cfs 7.50 ft · 55°F 775 ft Kiskiminetas
West Branch Susquehanna River At Renovo, Pa
9 hours ago · USGS 01545500
5,420 cfs 3.04 ft · 52°F 636 ft Middle West Branch Susquehanna
Schuylkill River At Norristown, Pa
9 hours ago · USGS 01473500
4,710 cfs 9.02 ft 73°F 61°F 52 ft Schuylkill
Wb Susquehanna River At Lock Haven, Pa
9 hours ago · USGS 01545800
4,680 cfs 9.05 ft · 54°F 538 ft Middle West Branch Susquehanna
Monongahela River Near Masontown, Pa
9 hours ago · USGS 03072655
4,230 cfs 10.74 ft 74°F 60°F 765 ft Lower Monongahela
Conemaugh River At Seward, Pa
10 hours ago · USGS 03041500
4,150 cfs 4.86 ft 65°F 54°F 1,080 ft Conemaugh
Conemaugh River At Tunnelton, Pa
9 hours ago · USGS 03044000
4,130 cfs 5.30 ft 70°F 55°F 845 ft Conemaugh
Schuylkill River At Philadelphia, Pa
9 hours ago · USGS 01474500
4,100 cfs 6.73 ft 74°F 63°F 13 ft Schuylkill
Susquehanna River At Meshoppen, Pa
9 hours ago · USGS 01533400
3,840 cfs 8.66 ft · 51°F 610 ft Upper Susquehanna-Tunkhannock
Chartiers Creek At Carnegie, Pa
9 hours ago · USGS 03085500
3,810 cfs 5.39 ft · 58°F 779 ft Upper Ohio
Youghiogheny River At Connellsville, Pa
9 hours ago · USGS 03082500
3,470 cfs 4.30 ft · 60°F 861 ft Youghiogheny
Wb Susquehanna River At Karthaus, Pa
9 hours ago · USGS 01542500
3,420 cfs 4.05 ft 66°F 50°F 832 ft Upper West Branch Susquehanna
Allegheny River At West Hickory, Pa
9 hours ago · USGS 03016000
3,360 cfs 4.30 ft 36°F 50°F 1,060 ft Middle Allegheny-Tionesta
Delaware River At Port Jervis Ny, Pa
9 hours ago · USGS 01434000
3,110 cfs 3.37 ft 66°F 60°F 418 ft Middle Delaware-Mongaup-Brodhead
Susquehanna River At Towanda, Pa
10 hours ago · USGS 01531500
3,110 cfs 1.00 ft · 49°F 686 ft Upper Susquehanna-Tunkhannock
Conemaugh River At Minersville, Pa
9 hours ago · USGS 03041029
3,100 cfs 4.61 ft · 54°F 1,133 ft Conemaugh
Susquehanna River Near Waverly Ny, Pa
10 hours ago · USGS 01515000
2,920 cfs 2.20 ft · 48°F 741 ft Owego-Wappasening
Allegheny River Bl Conewango Creek At Warren, Pa
9 hours ago · USGS 03015310
2,900 cfs 3.41 ft · 47°F 1,172 ft Upper Allegheny
Juniata River At Newport, Pa
9 hours ago · USGS 01567000
2,800 cfs 4.47 ft 43°F 56°F 368 ft Lower Juniata
Redbank Creek At St. Charles, Pa
9 hours ago · USGS 03032500
2,650 cfs 6.56 ft · 53°F 978 ft Middle Allegheny-Redbank
Clarion River Near Piney, Pa
9 hours ago · USGS 03030500
2,610 cfs 5.41 ft · 53°F 1,005 ft Clarion
Youghiogheny River Below Confluence, Pa
9 hours ago · USGS 03081000
2,570 cfs 4.04 ft 67°F 57°F 1,305 ft Youghiogheny
Allegheny River At Kinzua Dam, Pa
9 hours ago · USGS 03012550
2,460 cfs 8.64 ft 69°F 46°F 1,198 ft Upper Allegheny
Youghiogheny River At Ohiopyle, Pa
9 hours ago · USGS 03081500
2,370 cfs 3.57 ft · 57°F 1,170 ft Youghiogheny
Stonycreek River At Ferndale, Pa
9 hours ago · USGS 03040000
2,330 cfs 5.28 ft · 54°F 1,185 ft Conemaugh
Juniata River At Lewistown, Pa
9 hours ago · USGS 01564895
2,300 cfs 4.84 ft · 55°F 448 ft Lower Juniata
Beaver River At Beaver Falls, Pa
9 hours ago · USGS 03107500
2,190 cfs 5.31 ft · 55°F 719 ft Beaver
Juniata River At Mapleton Depot, Pa
9 hours ago · USGS 01563500
2,140 cfs 4.44 ft · 56°F 562 ft Lower Juniata
Clarion River At Cooksburg, Pa
9 hours ago · USGS 03029500
1,940 cfs 4.51 ft · 50°F 1,153 ft Clarion
Delaware River At Callicoon Ny, Pa
10 hours ago · USGS 01427510
1,860 cfs 3.65 ft 62°F 68°F 737 ft Upper Delaware
Loyalhanna Creek At Kingston, Pa
10 hours ago · USGS 03045000
1,800 cfs 5.96 ft · 63°F 1,023 ft Kiskiminetas
Delaware River At Lordville Ny, Pa
10 hours ago · USGS 01427207
1,720 cfs 6.79 ft 60°F 67°F 841 ft Upper Delaware
Juniata River At Huntingdon, Pa
9 hours ago · USGS 01559000
1,650 cfs 3.01 ft · 55°F 602 ft Upper Juniata
Lehigh River At Glendon, Pa
9 hours ago · USGS 01454700
1,630 cfs 7.92 ft 68°F 58°F 174 ft Lehigh
Redbank Creek At Brookville, Pa
9 hours ago · USGS 03031882
1,600 cfs 9.10 ft · 65°F 1,208 ft Middle Allegheny-Redbank
Tionesta Creek At Tionesta Creek Dam, Pa
10 hours ago · USGS 03020000
1,390 cfs 3.84 ft 66°F 50°F 1,048 ft Middle Allegheny-Tionesta
Beaver River At Wampum, Pa
9 hours ago · USGS 03105500
1,360 cfs 3.74 ft 76°F 55°F 737 ft Beaver
Lehigh River At Bethlehem, Pa
9 hours ago · USGS 01453000
1,300 cfs 1.82 ft · 59°F 211 ft Lehigh
Schuylkill River At Pottstown, Pa
9 hours ago · USGS 01472000
1,290 cfs 2.64 ft · 58°F 128 ft Schuylkill
West Branch Susquehanna River At Hyde, Pa
9 hours ago · USGS 01541303
1,220 cfs 4.90 ft · 50°F 1,098 ft Upper West Branch Susquehanna
French Creek At Utica, Pa
9 hours ago · USGS 03024000
1,120 cfs 3.26 ft · 51°F 1,026 ft French
Sinnemahoning Creek At Sinnemahoning, Pa
10 hours ago · USGS 01543500
1,060 cfs 3.31 ft · 52°F 778 ft Sinnemahoning
Loyalhanna Creek At Loyalhanna Dam, Pa
10 hours ago · USGS 03047000
1,040 cfs 2.53 ft 68°F 61°F 865 ft Kiskiminetas
Pennypack Cr At Lower Rhawn St Bdg, Pa
9 hours ago · USGS 01467048
952 cfs 5.05 ft 70°F 62°F 37 ft Lower Delaware
Bald Eagle Creek Near Beech Creek Station, Pa
9 hours ago · USGS 01548005
947 cfs 7.52 ft · 53°F 566 ft Bald Eagle
Blacklick Creek At Josephine, Pa
10 hours ago · USGS 03042000
932 cfs 5.00 ft 65°F 56°F 977 ft Conemaugh
Conestoga River At Conestoga, Pa
9 hours ago · USGS 01576754
881 cfs 2.64 ft · 60°F 180 ft Lower Susquehanna
French Creek Near Phoenixville, Pa
9 hours ago · USGS 01472157
879 cfs 7.17 ft 68°F 58°F 187 ft Schuylkill
Clearfield Creek At Dimeling, Pa
10 hours ago · USGS 01541500
863 cfs 5.02 ft · 50°F 1,152 ft Upper West Branch Susquehanna
Pennypack Creek At Pine Road, Pa
9 hours ago · USGS 01467042
843 cfs 5.39 ft 70°F 61°F 111 ft Lower Delaware
West Branch Susquehanna River At Bower, Pa
9 hours ago · USGS 01541000
794 cfs 6.20 ft · 50°F 1,214 ft Upper West Branch Susquehanna
Neshaminy Creek Near Penns Park, Pa
9 hours ago · USGS 01465200
787 cfs 6.86 ft · 59°F 119 ft Crosswicks-Neshaminy
French Creek At Meadville, Pa
9 hours ago · USGS 03023100
772 cfs 3.58 ft · 52°F 1,062 ft French
Lehigh River At Walnutport, Pa
9 hours ago · USGS 01451000
762 cfs 2.48 ft · 57°F 352 ft Lehigh
Fishing Creek Near Bloomsburg, Pa
9 hours ago · USGS 01539000
753 cfs 3.31 ft · 54°F 544 ft Upper Susquehanna-Lackawanna
Casselman River At Markleton, Pa
9 hours ago · USGS 03079000
750 cfs 2.44 ft 66°F 63°F 1,656 ft Youghiogheny
Conestoga River At Lancaster, Pa
9 hours ago · USGS 01576500
746 cfs 4.57 ft · 59°F 255 ft Lower Susquehanna
Allegheny River At Eldred, Pa
9 hours ago · USGS 03010500
730 cfs 4.68 ft · 44°F 1,421 ft Upper Allegheny
Lackawaxen River At Rowland, Pa
8 hours ago · USGS 01432110
726 cfs 4.72 ft 65°F 68°F 689 ft Lackawaxen
Youghiogheny River At Youghiogheny River Dam, Pa
9 hours ago · USGS 03077500
716 cfs 4.28 ft 66°F 57°F 1,313 ft Youghiogheny
Schuylkill River At Berne, Pa
9 hours ago · USGS 01470500
668 cfs 5.61 ft · 58°F 315 ft Schuylkill
Wissahickon Creek At Fort Washington, Pa
9 hours ago · USGS 01473900
666 cfs 5.17 ft 69°F 60°F 158 ft Schuylkill
Swatara Creek Near Hershey, Pa
10 hours ago · USGS 01573560
646 cfs 2.22 ft · 58°F 328 ft Lower Susquehanna-Swatara
East Mahantango Creek Near Dalmatia, Pa
9 hours ago · USGS 01555500
641 cfs 3.25 ft · 55°F 404 ft Lower Susquehanna-Penns
Wissahickon Creek At Mouth, Pa
9 hours ago · USGS 01474000
634 cfs 3.38 ft 68°F 62°F 71 ft Schuylkill
Tuscarora Creek Near Port Royal, Pa
9 hours ago · USGS 01566000
617 cfs 5.19 ft · 56°F 432 ft Lower Juniata
Clarion River At Ridgway, Pa
9 hours ago · USGS 03029000
617 cfs 3.96 ft · 48°F 1,361 ft Clarion
Lehigh River At Lehighton, Pa
9 hours ago · USGS 01449000
616 cfs 3.00 ft · 55°F 444 ft Lehigh
Mahoning Creek At Punxsutawney, Pa
10 hours ago · USGS 03034000
611 cfs 2.95 ft 62°F 52°F 1,211 ft Middle Allegheny-Redbank
Schuylkill River At Reading, Pa
9 hours ago · USGS 01471510
590 cfs 3.27 ft · 59°F 187 ft Schuylkill
Tunkhannock Creek Near Tunkhannock, Pa
9 hours ago · USGS 01534000
583 cfs 2.27 ft · 51°F 610 ft Upper Susquehanna-Tunkhannock
Bald Eagle Creek Bl Spring Creek At Milesburg, Pa
9 hours ago · USGS 01547200
583 cfs · · 53°F 683 ft Bald Eagle
Laurel Hill Creek At Ursina, Pa
9 hours ago · USGS 03080000
580 cfs 2.13 ft · 57°F 1,338 ft Youghiogheny
Wb Susquehanna River Near Curwensville, Pa
9 hours ago · USGS 01541200
572 cfs 3.67 ft · 50°F 1,129 ft Upper West Branch Susquehanna
Pine Creek Bl L Pine Creek Near Waterville, Pa
9 hours ago · USGS 01549700
570 cfs 2.20 ft 65°F 53°F 572 ft Pine
Swatara Creek At Harper Tavern, Pa
9 hours ago · USGS 01573000
566 cfs 1.66 ft · 57°F 368 ft Lower Susquehanna-Swatara
Mahoning Creek At Mahoning Creek Dam, Pa
10 hours ago · USGS 03036000
537 cfs 3.17 ft 67°F 54°F 1,003 ft Middle Allegheny-Redbank
Lackawaxen River At Hawley, Pa
9 hours ago · USGS 01431500
530 cfs 3.04 ft 62°F 50°F 885 ft Lackawaxen
Frankstown Br Juniata River At Williamsburg, Pa
9 hours ago · USGS 01556000
524 cfs 4.11 ft · 55°F 836 ft Upper Juniata
Penns Creek At Penns Creek, Pa
9 hours ago · USGS 01555000
485 cfs 2.74 ft · 55°F 511 ft Lower Susquehanna-Penns
Bald Eagle Creek At Blanchard, Pa
9 hours ago · USGS 01547500
479 cfs 3.97 ft 66°F 54°F 582 ft Bald Eagle
Crooked Creek At Crooked Creek Dam, Pa
10 hours ago · USGS 03039000
468 cfs 2.33 ft 69°F 55°F 806 ft Middle Allegheny-Redbank
Rays Br Juniata R Bl Rays Dam Nr Huntingdon, Pa
9 hours ago · USGS 01563200
453 cfs 4.01 ft 75°F 55°F 604 ft Raystown
Kishacoquillas Creek At Reedsville, Pa
9 hours ago · USGS 01565000
449 cfs 4.11 ft · 54°F 578 ft Lower Juniata
Conewango Creek At Russell, Pa
9 hours ago · USGS 03015000
438 cfs 2.69 ft · 46°F 1,228 ft Conewango
Shenango River At Sharpsville, Pa
9 hours ago · USGS 03103500
420 cfs 2.92 ft 73°F 53°F 865 ft Shenango
Perkiomen Creek At Graterford, Pa
9 hours ago · USGS 01473000
394 cfs 1.91 ft 69°F 59°F 125 ft Schuylkill
L Neshaminy Cr At Valley Road Nr Neshaminy, Pa
9 hours ago · USGS 01464907
391 cfs 3.80 ft · 59°F 202 ft Crosswicks-Neshaminy
Brodhead Creek At Minisink Hills, Pa
9 hours ago · USGS 01442500
385 cfs 1.68 ft · 54°F 304 ft Middle Delaware-Mongaup-Brodhead
Poquessing Creek At Grant Ave. At Philadelphia, Pa
9 hours ago · USGS 01465798
385 cfs 4.77 ft 70°F 62°F 32 ft Lower Delaware
Allegheny River At Port Allegany, Pa
9 hours ago · USGS 03007800
378 cfs 3.36 ft 58°F 46°F 1,457 ft Upper Allegheny
Two Lick Creek At Graceton, Pa
9 hours ago · USGS 03042500
372 cfs 3.41 ft · 55°F 984 ft Conemaugh
Pine Creek At Cedar Run, Pa
9 hours ago · USGS 01548500
362 cfs 1.84 ft · 49°F 780 ft Pine
Schuylkill River At Landingville, Pa
9 hours ago · USGS 01468500
358 cfs 3.82 ft · 55°F 472 ft Schuylkill
Tionesta Creek At Lynch, Pa
9 hours ago · USGS 03017500
355 cfs 1.87 ft 60°F 47°F 1,254 ft Middle Allegheny-Tionesta
Clarion River At Johnsonburg, Pa
9 hours ago · USGS 03028500
354 cfs 2.49 ft 61°F 46°F 1,426 ft Clarion
Crum Creek Near Newtown Square, Pa
10 hours ago · USGS 01475850
353 cfs 4.44 ft · 60°F 222 ft Lower Delaware
Loyalsock Creek At Loyalsockville, Pa
9 hours ago · USGS 01552000
352 cfs 1.62 ft · 53°F 588 ft Lower West Branch Susquehanna
Slippery Rock Creek At Wurtemburg, Pa
9 hours ago · USGS 03106500
352 cfs 1.82 ft · 54°F 833 ft Connoquenessing
Aughwick Creek Near Shirleysburg, Pa
9 hours ago · USGS 01564512
349 cfs 3.91 ft · 56°F 565 ft Lower Juniata
Shenango River Near Transfer, Pa
10 hours ago · USGS 03102850
342 cfs 2.66 ft 67°F 53°F 911 ft Shenango
Raystown Branch Juniata River At Saxton, Pa
9 hours ago · USGS 01562000
334 cfs 1.83 ft · 55°F 799 ft Raystown
Little Juniata River At Spruce Creek, Pa
9 hours ago · USGS 01558000
331 cfs 2.63 ft · 53°F 760 ft Upper Juniata
Dunning Creek At Belden, Pa
9 hours ago · USGS 01560000
325 cfs 2.69 ft · 61°F 1,054 ft Raystown
Brokenstraw Creek At Youngsville, Pa
9 hours ago · USGS 03015500
323 cfs 2.21 ft · 46°F 1,188 ft Upper Allegheny
Oil Creek At Rouseville, Pa
10 hours ago · USGS 03020500
319 cfs 2.89 ft · 51°F 1,026 ft Middle Allegheny-Tionesta
Lehigh R Bl Francis E Walter Res Nr White Haven Pa, Pa
9 hours ago · USGS 01447800
304 cfs 3.57 ft 67°F 49°F 1,220 ft Lehigh
Driftwood Br Sinnemahoning Cr At Sterling Run, Pa
10 hours ago · USGS 01543000
304 cfs · · 50°F 894 ft Sinnemahoning
Beech Creek At Monument, Pa
10 hours ago · USGS 01547950
295 cfs 6.31 ft · 53°F 746 ft Bald Eagle
Spring Creek At Milesburg, Pa
9 hours ago · USGS 01547100
294 cfs 4.69 ft · 53°F 699 ft Bald Eagle
Lackawanna River At Old Forge, Pa
10 hours ago · USGS 01536000
289 cfs 2.80 ft · 54°F 597 ft Upper Susquehanna-Lackawanna
East Branch Brandywine Creek Near Downingtown, Pa
9 hours ago · USGS 01480700
287 cfs 3.11 ft · 58°F 281 ft Brandywine-Christina
Frankford Creek At Castor Ave, Pa
9 hours ago · USGS 01467087
285 cfs 2.54 ft 71°F 62°F 50 ft Lower Delaware
Conodoguinet Creek Near Hogestown, Pa
9 hours ago · USGS 01570000
282 cfs 1.71 ft · 58°F 353 ft Lower Susquehanna-Swatara
Swatara Creek Near Pine Grove, Pa
9 hours ago · USGS 01572025
275 cfs 4.47 ft · 54°F 484 ft Lower Susquehanna-Swatara
First Fork Sinnemahoning Cr Near Sinnemahoning, Pa
10 hours ago · USGS 01544000
273 cfs · · 51°F 878 ft Sinnemahoning
Lackawaxen River Near Honesdale, Pa
9 hours ago · USGS 01430000
268 cfs 1.98 ft · 50°F 946 ft Lackawaxen
South Fork Tenmile Creek At Jefferson, Pa
10 hours ago · USGS 03073000
253 cfs 4.25 ft 70°F 60°F 855 ft Lower Monongahela
Neshaminy Creek Near Rushland, Pa
9 hours ago · USGS 01464750
245 cfs 4.10 ft · 59°F 153 ft Crosswicks-Neshaminy
Swatara Creek Near Inwood, Pa
9 hours ago · USGS 01572190
243 cfs 3.04 ft · 55°F 429 ft Lower Susquehanna-Swatara
Valley Creek At Pa Turnpike Br Near Valley Forge, Pa
9 hours ago · USGS 01473169
238 cfs 5.12 ft 69°F 60°F 145 ft Schuylkill
Connoquenessing Creek Near Zelienople, Pa
9 hours ago · USGS 03106000
230 cfs 2.14 ft 68°F 55°F 856 ft Connoquenessing
French Creek Near Union City, Pa
9 hours ago · USGS 03021520
222 cfs 2.97 ft · 50°F 1,195 ft French
Brandywine Creek At Chadds Ford, Pa
9 hours ago · USGS 01481000
219 cfs 1.95 ft 69°F 60°F 172 ft Brandywine-Christina
First Fork Sinnemahoning Creek At Wharton, Pa
8 hours ago · USGS 01543700
211 cfs 4.71 ft · 67°F 1,064 ft Sinnemahoning
Little Mahoning Creek At Mccormick, Pa
9 hours ago · USGS 03034500
206 cfs 3.02 ft 64°F 54°F 1,173 ft Middle Allegheny-Redbank
Lehigh River At Stoddartsville, Pa
9 hours ago · USGS 01447500
205 cfs 1.20 ft 62°F 47°F 1,461 ft Lehigh
Crooked Creek At Idaho, Pa
9 hours ago · USGS 03038000
201 cfs 3.13 ft 67°F 54°F 960 ft Middle Allegheny-Redbank
East Branch Brandywine Creek Below Downingtown, Pa
9 hours ago · USGS 01480870
200 cfs 3.72 ft 69°F 59°F 223 ft Brandywine-Christina
Tacony Creek At County Line, Pa
10 hours ago · USGS 01467086
197 cfs 3.19 ft 74°F 62°F 86 ft Lower Delaware
Yellow Creek Near Homer City, Pa
9 hours ago · USGS 03042280
196 cfs 2.54 ft · 55°F 1,139 ft Conemaugh
Raccoon Creek At Moffatts Mill, Pa
9 hours ago · USGS 03108000
191 cfs 2.21 ft · 56°F 721 ft Upper Ohio
Maiden Creek Near Virginville, Pa
9 hours ago · USGS 01470755
183 cfs 3.79 ft · 70°F 313 ft Schuylkill
Sherman Creek At Shermans Dale, Pa
9 hours ago · USGS 01568000
178 cfs 1.56 ft · 56°F 423 ft Lower Susquehanna-Swatara
Yellow Breeches Creek Near Camp Hill, Pa
10 hours ago · USGS 01571500
177 cfs 1.39 ft · 59°F 309 ft Lower Susquehanna-Swatara
Kettle Creek Near Westport, Pa
9 hours ago · USGS 01545000
175 cfs 2.39 ft · 52°F 729 ft Middle West Branch Susquehanna
Redstone Creek At Waltersburg, Pa
10 hours ago · USGS 03074500
175 cfs 2.32 ft · 60°F 891 ft Lower Monongahela
Cobbs Creek At Mt. Moriah Cemetery, Pa
8 hours ago · USGS 01475548
170 cfs 3.36 ft 75°F 72°F 41 ft Lower Delaware
Marsh Creek At Blanchard, Pa
10 hours ago · USGS 01547700
164 cfs 2.05 ft · 54°F 589 ft Bald Eagle
Lackawanna R Bl Leggetts Creek At Scranton, Pa
9 hours ago · USGS 01534860
155 cfs 1.55 ft · 70°F 709 ft Upper Susquehanna-Lackawanna
Tobyhanna Creek Near Blakeslee, Pa
9 hours ago · USGS 01447720
153 cfs 3.33 ft 67°F 47°F 1,514 ft Lehigh
Bushkill Creek Ab Rt 33 Bridge At Tatamy, Pa
9 hours ago · USGS 01446775
153 cfs 7.47 ft · 70°F 349 ft Middle Delaware-Musconetcong
Eb Clarion River At Eb Clarion River Dam, Pa
9 hours ago · USGS 03027500
152 cfs 2.63 ft 61°F 46°F 1,519 ft Clarion
Lackawanna River At Archbald, Pa
9 hours ago · USGS 01534500
150 cfs 2.44 ft · 53°F 895 ft Upper Susquehanna-Lackawanna
Spring Creek Near Axemann, Pa
10 hours ago · USGS 01546500
146 cfs 2.73 ft · 53°F 790 ft Bald Eagle
Bush Kill At Shoemakers, Pa
9 hours ago · USGS 01439500
138 cfs 2.00 ft 49°F 54°F 422 ft Middle Delaware-Mongaup-Brodhead
Tioga River At Tioga Junction, Pa
9 hours ago · USGS 01518700
133 cfs 6.98 ft 67°F 47°F 997 ft Tioga
West Conewago Creek Near Manchester, Pa
9 hours ago · USGS 01574000
131 cfs 2.60 ft 72°F 59°F 264 ft Lower Susquehanna
Shenango River At Pymatuning Dam, Pa
10 hours ago · USGS 03101500
126 cfs 4.93 ft · 54°F 976 ft Shenango
East Branch Perkiomen Creek Near Schwenksville, Pa
9 hours ago · USGS 01472810
121 cfs 3.16 ft · 58°F 195 ft Schuylkill
West Branch Clarion River At Wilcox, Pa
9 hours ago · USGS 03028000
121 cfs 1.76 ft 57°F 45°F 1,506 ft Clarion
Tioga River At Tioga, Pa
9 hours ago · USGS 01518000
116 cfs · · 47°F 1,023 ft Tioga
Little Shenango River At Greenville, Pa
15 hours ago · USGS 03102500
116 cfs 1.91 ft · 53°F 952 ft Shenango
Little Lehigh Creek At Tenth St. Br. At Allentown, Pa
10 hours ago · USGS 01451650
115 cfs 2.58 ft 63°F 59°F 246 ft Lehigh
West Branch Lackawaxen River Near Aldenville, Pa
9 hours ago · USGS 01428750
114 cfs 1.41 ft 60°F 50°F 1,251 ft Lackawaxen
Lycoming Creek Near Trout Run, Pa
9 hours ago · USGS 01550000
108 cfs 2.03 ft · 50°F 696 ft Lower West Branch Susquehanna
Dyberry Creek Near Honesdale, Pa
9 hours ago · USGS 01429500
107 cfs 2.40 ft · 50°F 972 ft Lackawaxen
Kettle Creek At Cross Fork, Pa
9 hours ago · USGS 01544500
106 cfs · 59°F 50°F 1,033 ft Middle West Branch Susquehanna
Quittapahilla Creek Near Bellegrove, Pa
9 hours ago · USGS 01573160
103 cfs 3.60 ft · 57°F 362 ft Lower Susquehanna-Swatara
Tulpehocken Creek Near Reading, Pa
9 hours ago · USGS 01471000
101 cfs 1.21 ft · 58°F 216 ft Schuylkill
West Branch Lackawaxen River At Prompton, Pa
9 hours ago · USGS 01429000
100 cfs 1.57 ft 68°F 50°F 1,086 ft Lackawaxen
Aughwick Creek Near Three Springs, Pa
9 hours ago · USGS 01564500
97 cfs 3.06 ft · 55°F 626 ft Lower Juniata
Woodcock Creek At Woodcock Creek Dam, Pa
10 hours ago · USGS 03022554
97 cfs 7.94 ft 69°F 52°F 1,127 ft French
Spring Creek At Houserville, Pa
10 hours ago · USGS 01546400
96 cfs 3.47 ft · 53°F 931 ft Bald Eagle
Towanda Creek Near Monroeton, Pa
9 hours ago · USGS 01532000
95 cfs 6.61 ft · 50°F 772 ft Upper Susquehanna-Tunkhannock
Brodhead Creek Near Analomink, Pa
9 hours ago · USGS 01440400
93 cfs 2.05 ft 61°F 52°F 592 ft Middle Delaware-Mongaup-Brodhead
Manatawny Creek Near Spangsville, Pa
9 hours ago · USGS 01471875
82 cfs 2.97 ft 66°F 58°F 265 ft Schuylkill
Cowanesque River Near Lawrenceville, Pa
9 hours ago · USGS 01520000
82 cfs 7.46 ft 67°F 46°F 997 ft Tioga
Conewago Creek Near Bellaire, Pa
9 hours ago · USGS 01573695
80 cfs 1.59 ft 68°F 70°F 425 ft Lower Susquehanna-Swatara
Codorus Creek Near York, Pa
9 hours ago · USGS 01575500
80 cfs 2.16 ft · 59°F 357 ft Lower Susquehanna
West Branch Perkiomen Creek At Hillegass, Pa
9 hours ago · USGS 01472199
78 cfs 1.20 ft · 57°F 289 ft Schuylkill
Muddy Creek Near Portersville, Pa
9 hours ago · USGS 03106300
77 cfs 2.15 ft · 54°F 1,160 ft Connoquenessing
Lackawanna River Near Forest City, Pa
9 hours ago · USGS 01534300
75 cfs 2.27 ft · 51°F 1,553 ft Upper Susquehanna-Lackawanna
Chester Creek Near Chester, Pa
9 hours ago · USGS 01477000
69 cfs 2.73 ft · 62°F 55 ft Lower Delaware
Kinzua Creek Near Guffey, Pa
9 hours ago · USGS 03011800
68 cfs 2.76 ft · 44°F 1,542 ft Upper Allegheny
Jordan Creek Near Schnecksville, Pa
9 hours ago · USGS 01451800
67 cfs 3.15 ft 65°F 57°F 389 ft Lehigh
Oswayo Creek At Shinglehouse, Pa
9 hours ago · USGS 03010655
65 cfs 4.04 ft · 46°F 1,464 ft Upper Allegheny
Pequea Creek At Martic Forge, Pa
10 hours ago · USGS 01576787
65 cfs 3.49 ft · 59°F 216 ft Lower Susquehanna
Tulpehocken Creek Near Bernville, Pa
9 hours ago · USGS 01470779
64 cfs 1.70 ft 65°F 58°F 312 ft Schuylkill
Tulpehocken Cr At Blue Marsh Damsite Near Reading, Pa
9 hours ago · USGS 01470960
64 cfs 3.73 ft 71°F 58°F 234 ft Schuylkill
Pohopoco Creek At Kresgeville, Pa
9 hours ago · USGS 01449360
63 cfs 3.41 ft 62°F 54°F 675 ft Lehigh
French Creek Near Wattsburg, Pa
9 hours ago · USGS 03021350
63 cfs 4.42 ft · 50°F 1,316 ft French
Bald Eagle Creek At Tyrone, Pa
9 hours ago · USGS 01557500
63 cfs · · 53°F 923 ft Upper Juniata
Perkiomen Creek At East Greenville, Pa
9 hours ago · USGS 01472198
59 cfs 2.12 ft · 57°F 290 ft Schuylkill
Equinunk Creek Near Dillontown, Pa
8 hours ago · USGS 01427195
59 cfs 2.83 ft 61°F 68°F 936 ft Upper Delaware
Pohopoco Cr Bl Beltzville Dam Nr Parryville, Pa
9 hours ago · USGS 01449800
57 cfs 2.75 ft 57°F 55°F 495 ft Lehigh
Nb Neshaminy Cr Bl Lake Galena Nr New Britain, Pa
9 hours ago · USGS 01464645
56 cfs 2.12 ft · 59°F 277 ft Crosswicks-Neshaminy
Dunkard Creek At Shannopin, Pa
9 hours ago · USGS 03072000
55 cfs 1.77 ft 72°F 61°F 812 ft Lower Monongahela
Little Lehigh Creek Near Allentown, Pa
9 hours ago · USGS 01451500
55 cfs · 63°F 59°F 260 ft Lehigh
Cowanesque River At Elkland, Pa
8 hours ago · USGS 01519200
54 cfs 16.02 ft · 62°F 1,119 ft Tioga
Muddy Creek At Castle Fin, Pa
9 hours ago · USGS 01577500
54 cfs 3.01 ft 69°F 59°F 174 ft Lower Susquehanna
Little Schuylkill River At Tamaqua, Pa
9 hours ago · USGS 01469500
51 cfs 2.35 ft · 53°F 821 ft Schuylkill
Aquashicola Creek At Palmerton, Pa
9 hours ago · USGS 01450500
51 cfs · · 56°F 391 ft Lehigh
Linn Run At Linn Run State Park Near Rector, Pa
9 hours ago · USGS 03044810
51 cfs 2.37 ft · 63°F 1,554 ft Kiskiminetas
West Branch Brandywine Creek Near Honey Brook, Pa
10 hours ago · USGS 01480300
48 cfs 1.75 ft · 57°F 601 ft Brandywine-Christina
Jordan Creek At Allentown, Pa
9 hours ago · USGS 01452000
48 cfs 1.74 ft · 58°F 264 ft Lehigh
West Branch Brandywine Creek At Modena, Pa
9 hours ago · USGS 01480617
47 cfs 3.04 ft 68°F 58°F 282 ft Brandywine-Christina
East Fork Sinnemahoning At Wharton Township, Pa
8 hours ago · USGS 01543693
47 cfs 3.82 ft · 64°F 1,162 ft Sinnemahoning
Tioga River Near Mansfield, Pa
9 hours ago · USGS 01516350
47 cfs · 63°F 47°F 1,126 ft Tioga
Wills Creek Below Hyndman, Pa
9 hours ago · USGS 01601000
41 cfs 1.85 ft · 63°F 903 ft North Branch Potomac
Chillisquaque Creek Near Potts Grove, Pa
9 hours ago · USGS 01553850
40 cfs 19.51 ft · 70°F 470 ft Lower West Branch Susquehanna
White Clay Creek Near Strickersville, Pa
9 hours ago · USGS 01478245
38 cfs 3.08 ft 68°F 60°F 137 ft Brandywine-Christina
Pequea Creek Near Ronks, Pa
9 hours ago · USGS 01576767
38 cfs 2.41 ft · 71°F 323 ft Lower Susquehanna
East Branch Perkiomen Creek Near Dublin, Pa
9 hours ago · USGS 01472620
37 cfs 1.91 ft · 57°F 343 ft Schuylkill
Shohola Creek Near Walker Lake, Pa
8 hours ago · USGS 01432495
36 cfs 3.35 ft 65°F 68°F 708 ft Middle Delaware-Mongaup-Brodhead
Young Womans Creek Near Renovo, Pa
9 hours ago · USGS 01545600
36 cfs 1.90 ft 61°F 52°F 835 ft Middle West Branch Susquehanna
Tohickon Creek Near Pipersville, Pa
9 hours ago · USGS 01459500
35 cfs 1.53 ft · 57°F 259 ft Middle Delaware-Musconetcong
Wapwallopen Creek Near Wapwallopen, Pa
9 hours ago · USGS 01538000
34 cfs 1.31 ft · 54°F 757 ft Upper Susquehanna-Lackawanna
Tunkhannock Creek Near Long Pond, Pa
9 hours ago · USGS 01447680
33 cfs 1.42 ft · 49°F 1,809 ft Lehigh
Monocacy Creek At Bethlehem, Pa
10 hours ago · USGS 01452500
33 cfs 2.27 ft · 58°F 256 ft Lehigh
Ridley Creek At Media, Pa
9 hours ago · USGS 01476480
31 cfs 3.47 ft · 62°F 95 ft Lower Delaware
West Branch Brandywine Creek At Coatesville, Pa
10 hours ago · USGS 01480500
31 cfs 3.75 ft 67°F 58°F 326 ft Brandywine-Christina
Chillisquaque Creek At Washingtonville, Pa
9 hours ago · USGS 01553700
31 cfs · · 55°F 503 ft Lower West Branch Susquehanna
Nb Neshaminy Creek At Chalfont, Pa
9 hours ago · USGS 01464720
30 cfs 3.04 ft · 59°F 257 ft Crosswicks-Neshaminy
West Conewago Creek At East Berlin, Pa
10 hours ago · USGS 01573825
26 cfs 2.60 ft · 57°F 388 ft Lower Susquehanna
Paxton Creek Near Glenwood, Pa
9 hours ago · USGS 01571005
26 cfs 2.28 ft · 70°F 338 ft Lower Susquehanna-Swatara
Marsh Creek Near Glenmoore, Pa
10 hours ago · USGS 01480675
26 cfs 1.82 ft · 58°F 506 ft Brandywine-Christina
Muncy Creek Near Sonestown, Pa
9 hours ago · USGS 01552500
24 cfs 1.92 ft · 51°F 1,031 ft Lower West Branch Susquehanna
Cowanesque River At Westfield, Pa
9 hours ago · USGS 01518862
24 cfs · · 46°F 1,338 ft Tioga
Cobbs Cr At U.S. Hghwy No. 1 At Philadelphia, Pa
9 hours ago · USGS 01475530
24 cfs 3.05 ft 70°F 62°F 136 ft Lower Delaware
Choconut Creek Near Choconut, Pa
9 hours ago · USGS 01513550
22 cfs 4.42 ft · 66°F 1,119 ft Owego-Wappasening
Crooked Cr Bl Catlin Hollow At Middlebury Center, Pa
9 hours ago · USGS 01518420
22 cfs 39.07 ft · 61°F 1,154 ft Tioga
Woodcock Creek At Blooming Valley, Pa
10 hours ago · USGS 03022540
21 cfs 6.39 ft 62°F 52°F 1,215 ft French
Wappasening Creek Near Windham Center, Pa
9 hours ago · USGS 01514850
20 cfs 5.59 ft · 67°F 910 ft Owego-Wappasening
Towanda Creek Near Franklindale, Pa
9 hours ago · USGS 01531908
19 cfs 3.12 ft · 66°F 907 ft Upper Susquehanna-Tunkhannock
Blockhouse Creek Near English Center, Pa
10 hours ago · USGS 01549500
17 cfs · · 49°F 1,044 ft Pine
Red Clay Creek Near Kennett Square, Pa
10 hours ago · USGS 01479820
17 cfs 3.08 ft 67°F 59°F 214 ft Brandywine-Christina
Codorus Creek At Spring Grove, Pa
9 hours ago · USGS 01574500
16 cfs · · 58°F 431 ft Lower Susquehanna
Sugar Creek At West Burlington, Pa
9 hours ago · USGS 01531325
13 cfs 1.76 ft · 65°F 921 ft Upper Susquehanna-Tunkhannock
Bixler Run Near Loysville, Pa
9 hours ago · USGS 01567500
11 cfs 3.13 ft · 54°F 604 ft Lower Susquehanna-Swatara
Walnut Creek Upstream Pool, Pa
9 hours ago · USGS 04213152
10 cfs 3.23 ft 62°F 64°F 595 ft Chautauqua-Conneaut
Sevenmile Run Near Rasselas, Pa
9 hours ago · USGS 03026500
10 cfs 1.98 ft 57°F 45°F 1,694 ft Clarion
Swiftwater Creek At Swiftwater, Pa
9 hours ago · USGS 01440485
10 cfs · · 52°F 1,111 ft Middle Delaware-Mongaup-Brodhead
Marsh Creek Near Downingtown, Pa
4 days ago · USGS 01480685
8 cfs 1.54 ft · 83°F 329 ft Brandywine-Christina
East Branch White Clay Creek At Avondale, Pa
9 hours ago · USGS 01478120
8 cfs 1.97 ft 37°F 70°F 273 ft Brandywine-Christina
East Branch Big Elk Creek At Forestville, Pa
9 hours ago · USGS 01494850
6 cfs 3.18 ft · 70°F 412 ft Chester-Sassafras
Waldy Run Near Emporium, Pa
9 hours ago · USGS 01542810
4 cfs 3.51 ft · 48°F 1,266 ft Sinnemahoning
Little Bush Kill At Edgemere, Pa
9 hours ago · USGS 01439590
4 cfs 4.55 ft · 66°F 1,272 ft Middle Delaware-Mongaup-Brodhead
Mountain Creek Near Pine Grove Furnace, Pa
9 hours ago · USGS 01571184
3 cfs 3.98 ft · 64°F 859 ft Lower Susquehanna-Swatara
Little Pine Creek Near Etna, Pa
10 hours ago · USGS 03049800
2 cfs 2.47 ft · 57°F 779 ft Lower Allegheny
Birch Run Near Wagontown, Pa
10 hours ago · USGS 01480400
2 cfs 2.27 ft 68°F 58°F 520 ft Brandywine-Christina
Bermudian Creek At Oxford Road Nr Heidlersburg, Pa
9 hours ago · USGS 01573849
2 cfs 1.77 ft · 67°F 618 ft Lower Susquehanna
Corey Creek Near Mainesburg, Pa
9 hours ago · USGS 01516500
1 cfs 1.46 ft · 47°F 1,341 ft Tioga
Nb Sugar Creek Trib Near Columbia Cross Roads, Pa
9 hours ago · USGS 01531250
1 cfs · · 47°F 1,144 ft Upper Susquehanna-Tunkhannock
Brandy Run Near Girard, Pa
9 hours ago · USGS 04213075
1 cfs 1.50 ft · 54°F 759 ft Chautauqua-Conneaut
Tonoloway Creek Near Needmore, Pa
9 hours ago · USGS 01613050
1 cfs 2.80 ft · 56°F 692 ft Conococheague-Opequon
🔒 Premium

See every Pennsylvania gauge ranked against normal.

  • Percentile rank & % of median for all 262 gauges
  • 15-day PULSE forecast on every gauge
  • Custom flow alerts & full daily history
Start my free 7-day trial 7-day free trial · cancel anytime
Flow report FAQ

About Pennsylvania streamflow

What are river levels like in Pennsylvania right now?

As of September 21, 2026, Pennsylvania rivers are running at 231% of normal across 262 USGS streamgauges, and the Ohio River At Sewickley is reporting the highest discharge at 26,900 cfs. The full sortable gauge table is below.

Which Pennsylvania river is running highest right now?

As of September 21, 2026, the highest discharge in Pennsylvania is 26,900 cfs on the Ohio River At Sewickley. See the sortable gauge table for the full statewide ranking.

Are Pennsylvania rivers high or low right now?

Compare the statewide percent-of-normal on this page: above 100% means Pennsylvania rivers are running higher than the seasonal average for the date, below 100% means lower (a dry spell or drought). Each gauge also shows its own percent of median.

Where does the Pennsylvania streamflow data come from?

The U.S. Geological Survey National Water Information System. USGS streamgauges report continuously (every 15 minutes) and the data is the canonical real-time record for U.S. rivers. Snoflo pulls the latest readings and joins them to a 7-day NOAA weather forecast for each station.

What is cfs?

Cubic feet per second — the standard unit for streamflow. One cfs is about 7.5 gallons per second. Small creeks run at single-digit cfs; the Mississippi at hundreds of thousands.

What does Gauge Height mean?

The water level at the gauge in feet above the reference datum. Used together with discharge to track river state. Flood stage and runnable levels are typically expressed in gauge height (e.g., "flood at 16 ft").

How fresh is the Pennsylvania data?

USGS streamgauges report every 15 minutes; Snoflo re-pulls throughout the day. The AI briefing regenerates daily.

Can I get a flow alert for a Pennsylvania gauge?

Yes. Save any USGS gauge as a favorite in the Snoflo iOS app, set a discharge or stage threshold (e.g. "alert me when discharge crosses 2,000 cfs"), and you'll get a push the moment it crosses.

Is this a substitute for an NWS flood warning?

No. Snoflo is informational. For flood life-safety decisions always follow guidance from your local NWS forecast office and state emergency management. Snoflo data is one input among several.