How high is the Little Patuxent River at Guilford, MD right now?

The Little Patuxent River at Guilford, MD is currently flowing at 32 cubic feet per second with a gage height of 2.28 feet, based on the most recent USGS instantaneous reading.

Is the flow on the Little Patuxent River at Guilford, MD normal for this time of year?

Current flow is classified as normal for June 11. Today's discharge is at the 66th percentile compared to the long-term historical record at this gauge.

Is the Little Patuxent River at Guilford, MD at flood stage?

No — the gage height is 9.72 feet below the NWS flood-stage threshold of 12.0 feet.

What is the historical median flow for the Little Patuxent River at Guilford, MD on June 11?

The long-term median discharge for this date is 24 cfs based on USGS daily statistics. The 10th–95th percentile range historically is 13 to 100 cfs.

Where is the Little Patuxent River at Guilford, MD stream gauge located?

The Little Patuxent River at Guilford, MD stream gauge is operated by the USGS in Howard County, MD on the Little Patuxent River. USGS site number 01593500 (coordinates 39.1678, -76.8513).

Little Patuxent River at Guilford, MD

USGS Site No: 01593500 • Little Patuxent River • Howard County, MD

Little Patuxent River at Guilford, MD on the Little Patuxent River is currently at 32 cfs (Normal — 66th percentile for this date) . Gage height: 2.28 ft.

Reading from 1 week ago

Downstream on Little Patuxent River ↓

Little Patuxent River at Savage, MD

CFS Discharge

2.28

Gage Height (ft)

Normal

Flow Condition

Normal

Flood Status

Historical Percentile Comparison

Today's discharge compared to the long-term record for June 11 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	13
25th	Low threshold	17
50th (Median)	Normal (median)	24
75th	High threshold	36	Today: 32 cfs
95th	Very High threshold	100

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	52	—
May 27, 2026	72	—
May 26, 2026	51	—
May 25, 2026	85	—
May 24, 2026	463	—
May 23, 2026	300	—
May 22, 2026	51	—
May 21, 2026	69	—
May 20, 2026	34	—
May 19, 2026	9	—
May 18, 2026	11	—
May 17, 2026	12	—
May 16, 2026	14	—
May 15, 2026	21	—
Apr 21, 2026	13	—
Apr 20, 2026	16	—
Apr 19, 2026	17	—
Apr 18, 2026	14	—
Apr 17, 2026	16	—
Apr 16, 2026	18	—
Apr 15, 2026	22	—
Apr 14, 2026	18	—
Apr 13, 2026	18	—
Apr 12, 2026	17	—
Apr 11, 2026	19	—
Apr 10, 2026	20	—
Apr 9, 2026	20	—
Apr 8, 2026	22	—
Apr 7, 2026	27	—
Apr 6, 2026	39	—

Station Information

USGS Site No: 01593500
State: MD
County: Howard County
Coordinates: 39.1678, -76.8513
Drainage Area: 38 mi²
Datum (ft): 257.6
HUC Code: 020600060202

View on USGS NWIS →

Flood Stage Thresholds

Action Stage: 8.0 ft
Flood Stage: 12.0 ft
Moderate Flood: 16.0 ft
Major Flood: 20.0 ft

Currently 9.72 ft below flood stage.

Recent Extremes

Max discharge: 463 cfs

May 24, 2026
Min discharge: 6 cfs

Sep 1, 2025
Days at flood stage: 0

Computed from the local daily-values archive.

Nearby Gauges

Patapsco River Near Catonsville, MD
7.4 mi · 123 cfs

Normal
Patapsco River Near Elkridge, MD
8.0 mi · 132 cfs

Normal
East Branch Herbert Run at Arbutus, MD
9.9 mi · 1 cfs

Normal
Patapsco River at Hollofield, MD
10.3 mi · 92 cfs

Normal
Red Run Near Owings Mills, MD
16.8 mi · 6 cfs

Normal