River levels in Pennsylvania.
296 reporting USGS gauges in Pennsylvania, each compared against its own record for this calendar day rather than against a fixed threshold — which is what makes "low" mean low for that river. Right now, 235 running above normal.
Gauges across Pennsylvania.
One dot per reporting gauge, coloured by how today’s flow ranks against that gauge’s own record for this date.
- Below normal4
- Normal21
- Above normal65
- Much above normal170
- No baseline36
Furthest from normal in Pennsylvania.
Recorded September 4, 2026. Each gauge is ranked against its own history for this calendar day, so "below normal" means low for that river — not low compared to some other river.
| Gauge | Flow | Median | Condition |
|---|---|---|---|
| Susquehanna River At Sunbury, Pa | 31,100 ft³/s | 5,035 ft³/s | Much above normal |
| Wb Susquehanna River At Williamsport, Pa | 26,700 ft³/s | 1,420 ft³/s | Much above normal |
| West Branch Susquehanna River At Lewisburg, Pa | 25,600 ft³/s | 1,895 ft³/s | Much above normal |
| Wb Susquehanna River At Jersey Shore, Pa | 24,400 ft³/s | 1,410 ft³/s | Much above normal |
| West Branch Susquehanna River At Allenwood, Pa | 23,900 ft³/s | 2,040 ft³/s | Much above normal |
| Allegheny River At Franklin, Pa | 13,900 ft³/s | 2,410 ft³/s | Much above normal |
| Allegheny River At Parker, Pa | 13,200 ft³/s | 3,270 ft³/s | Much above normal |
| Susquehanna River Near Waverly NY | 9,380 ft³/s | 1,260 ft³/s | Much above normal |
| Susquehanna River At Towanda, Pa | 8,330 ft³/s | 1,765 ft³/s | Much above normal |
| West Branch Susquehanna River At Renovo, Pa | 6,880 ft³/s | 796 ft³/s | Much above normal |
| Allegheny River At West Hickory, Pa | 6,580 ft³/s | 2,220 ft³/s | Much above normal |
| Juniata River At Newport, Pa | 5,950 ft³/s | 925 ft³/s | Much above normal |
Showing 12 of 296 gauges in Pennsylvania. The national map is searchable by river and gauge name.
What "below normal" actually means.
The one thing worth understanding before drawing a conclusion from this map.
Every gauge is ranked against its own record for this calendar day. A river that normally runs 40 cubic feet per second in August is "much below normal" at 12; one that normally runs 40,000 is not. That is why a single national colour scale works at all — the comparison is always local, and always seasonal. Gauges with fewer than ten years of record for the date are shown unclassified rather than assumed normal.
This is a daily mean read against a daily percentile, refreshed twice a day. It cannot represent a fast-rising river. For flood forecasts and warnings in Pennsylvania, use NOAA's National Water Prediction Service and your local National Weather Service office; for life-safety information, follow your local emergency management agency.
See Pennsylvania on the live map.
This page is a still frame. The national map is interactive — pan, zoom, filter, and read every record behind what you see here.
Every reporting USGS stream gauge in the country, coloured by how today’s flow ranks against that gauge’s own record for this calendar day.
More on Pennsylvania.
Every Driftwise public map covers Pennsylvania. No login, no paywall.
Watershed Explorer
Click any point in the country and read what six federal datasets say about it — flow, drought, fire, flood forecast, satellite cyanobacteria screening and Clean Water Act impairment — each one labelled with what it is actually a fact about.
Wildfire & Smoke Map — Pennsylvania
Official NIFC fire perimeters and incident points under NOAA’s HRRR-Smoke near-surface forecast, filterable by size, state, and containment.
U.S. Drought Map — Pennsylvania
The U.S. Drought Monitor — the country’s official weekly drought assessment — drawn across five severity categories from D0 to D4.
Flood Outlook Map — Pennsylvania
NOAA’s river forecast centres call the next few days at every forecast gauge in the country, on the National Weather Service’s own flood categories — action, minor, moderate and major.
Impaired Waters Map — Pennsylvania
Every subwatershed in the country against the states’ own Clean Water Act assessments — what is impaired, what is still on the 303(d) list, what is causing it, and how much of the country nobody has assessed at all.
Cyanobacteria Bloom Map — Pennsylvania
NASA and EPA’s satellites read a pigment index over roughly 2,300 U.S. lakes large enough to resolve at 300 m. A pre-screening indicator, not a health assessment, and never a substitute for your state’s advisory.
Critical Habitat & Protected Waters Map — Pennsylvania
Every river and stream the federal government has designated as ESA critical habitat, the listed species each unit is designated for, and who manages the protected land around it.
River levels by state.
Every state, with the number of USGS gauges reporting there. The national map covers all of them at once.
- Alabama141 gauges
- Alaska90 gauges
- Arizona186 gauges
- Arkansas113 gauges
- California433 gauges
- Colorado324 gauges
- Connecticut69 gauges
- Delaware17 gauges
- District of Columbia3 gauges
- Florida376 gauges
- Georgia284 gauges
- Hawaii79 gauges
- Idaho198 gauges
- Illinois186 gauges
- Indiana185 gauges
- Iowa135 gauges
- Kansas178 gauges
- Kentucky149 gauges
- Louisiana55 gauges
- Maine64 gauges
- Maryland128 gauges
- Massachusetts108 gauges
- Michigan201 gauges
- Minnesota111 gauges
- Mississippi72 gauges
- Missouri229 gauges
- Montana224 gauges
- Nebraska114 gauges
- Nevada145 gauges
- New Hampshire53 gauges
- New Jersey117 gauges
- New Mexico153 gauges
- New York299 gauges
- North Carolina233 gauges
- North Dakota103 gauges
- Ohio215 gauges
- Oklahoma136 gauges
- Oregon240 gauges
- Pennsylvania296 gauges
- Puerto Rico99 gauges
- Rhode Island34 gauges
- South Carolina123 gauges
- South Dakota106 gauges
- Tennessee110 gauges
- Texas518 gauges
- Utah173 gauges
- Vermont51 gauges
- Virginia198 gauges
- Washington236 gauges
- West Virginia102 gauges
- Wisconsin182 gauges
- Wyoming105 gauges
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