How high is the Susquehanna River at Harrisburg, PA right now?

The Susquehanna River at Harrisburg, PA is currently flowing at 50,000 cubic feet per second with a gage height of 5.66 feet, based on the most recent USGS instantaneous reading.

Is the flow on the Susquehanna River at Harrisburg, PA normal for this time of year?

Current flow is classified as high for October 28. Today's discharge is at the 84th percentile compared to the long-term historical record at this gauge.

Is the Susquehanna River at Harrisburg, PA at flood stage?

No — the gage height is 11.34 feet below the NWS flood-stage threshold of 17.0 feet.

What is the historical median flow for the Susquehanna River at Harrisburg, PA on October 28?

The long-term median discharge for this date is 12,400 cfs based on USGS daily statistics. The 10th–95th percentile range historically is 4,110 to 79,500 cfs.

Where is the Susquehanna River at Harrisburg, PA stream gauge located?

The Susquehanna River at Harrisburg, PA stream gauge is operated by the USGS in Dauphin County, PA on the Susquehanna River. USGS site number 01570500 (coordinates 40.2547, -76.8861).

Susquehanna River at Harrisburg, PA

USGS Site No: 01570500 • Susquehanna River • Dauphin County, PA

Susquehanna River at Harrisburg, PA on the Susquehanna River is currently at 50,000 cfs (High — 84th percentile for this date) . Gage height: 5.66 ft.

Reading from 4 months ago

↑ Upstream on Susquehanna River

Susquehanna River at Sunbury, PA

Downstream on Susquehanna River ↓

Susquehanna River at Marietta, PA

50,000

CFS Discharge

5.66

Gage Height (ft)

High

Flow Condition

Normal

Flood Status

Historical Percentile Comparison

Today's discharge compared to the long-term record for October 28 at this station. Percentile rank shows what fraction of historical years had lower flow on this date.

Percentile	Label	CFS Threshold	Today's Flow
10th	Very Low threshold	4,110
25th	Low threshold	7,080
50th (Median)	Normal (median)	12,400
75th	High threshold	27,100
95th	Very High threshold	79,500	Today: 50,000 cfs

30-Day Hydrograph

Recent discharge plotted against the historical 10th–95th percentile envelope for the same calendar days. Source: USGS daily values + long-term statistics.

10th–95th historical Day-of-year median Recent discharge

30-Day Flow History

Date	Discharge (CFS)	Gage Ht (ft)
May 28, 2026	63,900	—
May 27, 2026	63,600	—
May 26, 2026	51,000	—
May 25, 2026	47,300	—
May 24, 2026	33,300	—
May 23, 2026	23,800	—
May 22, 2026	25,000	—
May 21, 2026	25,900	—
May 20, 2026	27,100	—
May 19, 2026	30,000	—
May 18, 2026	33,200	—
May 17, 2026	35,800	—
May 16, 2026	37,600	—
May 15, 2026	38,500	—
Apr 21, 2026	55,500	—
Apr 20, 2026	45,200	—
Apr 19, 2026	44,000	—
Apr 18, 2026	39,700	—
Apr 17, 2026	35,900	—
Apr 16, 2026	36,000	—
Apr 15, 2026	38,100	—
Apr 14, 2026	42,100	—
Apr 13, 2026	47,100	—
Apr 12, 2026	52,100	—
Apr 11, 2026	57,300	—
Apr 10, 2026	65,100	—
Apr 9, 2026	77,100	—
Apr 8, 2026	92,800	—
Apr 7, 2026	102,000	—
Apr 6, 2026	101,000	—

Station Information

USGS Site No: 01570500
State: PA
County: Dauphin County
Coordinates: 40.2547, -76.8861
Drainage Area: 24,100 mi²
Datum (ft): 289.3
HUC Code: 02050305

View on USGS NWIS →

Flood Stage Thresholds

Action Stage: 11.0 ft
Flood Stage: 17.0 ft
Moderate Flood: 20.0 ft
Major Flood: 23.0 ft

Currently 11.34 ft below flood stage.

Recent Extremes

Max discharge: 161,000 cfs

May 9, 2025
Min discharge: 3,510 cfs

Sep 23, 2025
Days at flood stage: 0

Computed from the local daily-values archive.

Nearby Gauges

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2.2 mi · 191 cfs

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Paxton Creek Near Glenwood, PA
3.9 mi · 6 cfs

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7.1 mi · 491 cfs

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Sherman Creek at Shermans Dale, PA
15.6 mi · 142 cfs

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Swatara Creek at Harper Tavern, PA
19.2 mi · 250 cfs

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