How high is the Perkiomen Creek at Graterford, PA right now?

The Perkiomen Creek at Graterford, PA is currently flowing at 122 cubic feet per second with a gage height of 1.22 feet, based on the most recent USGS instantaneous reading.

Is the flow on the Perkiomen Creek at Graterford, PA normal for this time of year?

Current flow is classified as normal for October 28. Today's discharge is at the 45th percentile compared to the long-term historical record at this gauge.

Is the Perkiomen Creek at Graterford, PA at flood stage?

No — the gage height is 9.78 feet below the NWS flood-stage threshold of 11.0 feet.

What is the historical median flow for the Perkiomen Creek at Graterford, PA on October 28?

The long-term median discharge for this date is 129 cfs based on USGS daily statistics. The 10th–95th percentile range historically is 57 to 3,490 cfs.

Where is the Perkiomen Creek at Graterford, PA stream gauge located?

The Perkiomen Creek at Graterford, PA stream gauge is operated by the USGS in Montgomery County, PA on the Perkiomen Creek. USGS site number 01473000 (coordinates 40.2295, -75.4516).

Perkiomen Creek at Graterford, PA

USGS Site No: 01473000 • Perkiomen Creek • Montgomery County, PA

Perkiomen Creek at Graterford, PA on the Perkiomen Creek is currently at 122 cfs (Normal — 45th percentile for this date) . Gage height: 1.22 ft.

Reading from 4 months ago

↑ Upstream on Perkiomen Creek

Perkiomen Creek at East Greenville, PA

122

CFS Discharge

1.22

Gage Height (ft)

Normal

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	57
25th	Low threshold	96
50th (Median)	Normal (median)	129	Today: 122 cfs
75th	High threshold	293
95th	Very High threshold	3,490

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	164	—
May 27, 2026	199	—
May 26, 2026	292	—
May 25, 2026	497	—
May 24, 2026	754	—
May 23, 2026	115	—
May 22, 2026	129	—
May 21, 2026	165	—
May 20, 2026	102	—
May 19, 2026	86	—
Apr 21, 2026	126	—
Apr 20, 2026	143	—
Apr 19, 2026	118	—
Apr 18, 2026	119	—
Apr 17, 2026	130	—
Apr 16, 2026	143	—
Apr 15, 2026	153	—
Apr 14, 2026	154	—
Apr 13, 2026	146	—
Apr 12, 2026	150	—
Apr 11, 2026	168	—
Apr 10, 2026	172	—
Apr 9, 2026	178	—
Apr 8, 2026	197	—
Apr 7, 2026	253	—
Apr 6, 2026	389	—
Apr 5, 2026	231	—
Apr 4, 2026	227	—
Apr 3, 2026	264	—
Apr 2, 2026	249	—

Station Information

USGS Site No: 01473000
State: PA
County: Montgomery County
Coordinates: 40.2295, -75.4516
Drainage Area: 279 mi²
Datum (ft): 112.7
HUC Code: 02040203

View on USGS NWIS →

Flood Stage Thresholds

Action Stage: 8.0 ft
Flood Stage: 11.0 ft
Moderate Flood: 13.0 ft
Major Flood: 16.0 ft

Currently 9.78 ft below flood stage.

Recent Extremes

Max discharge: 4,990 cfs

May 31, 2025
Min discharge: 78 cfs

Oct 18, 2025
Days at flood stage: 0

Computed from the local daily-values archive.

Nearby Gauges

Brandywine Creek at Wilmington, DE
32.5 mi · 245 cfs

Normal
Shellpot Creek at Wilmington, DE
32.6 mi · 2 cfs

Normal
Red Clay Creek at Wooddale, DE
33.7 mi · 34 cfs

Normal
Calf Run at Marshallton, DE
36.3 mi · 0 cfs

Very High
Red Clay Creek Near Stanton, DE
36.9 mi · 38 cfs

Normal