How high is the Sudbury River at Saxonville, MA right now?

The Sudbury River at Saxonville, MA is currently flowing at 116 cubic feet per second with a gage height of 5.46 feet, based on the most recent USGS instantaneous reading.

Is the flow on the Sudbury River at Saxonville, MA normal for this time of year?

Current flow is classified as normal for October 28. Today's discharge is at the 55th percentile compared to the long-term historical record at this gauge.

Is the Sudbury River at Saxonville, MA at flood stage?

No — the gage height is 4.54 feet below the NWS flood-stage threshold of 10.0 feet.

What is the historical median flow for the Sudbury River at Saxonville, MA on October 28?

The long-term median discharge for this date is 85 cfs based on USGS daily statistics. The 10th–95th percentile range historically is 20 to 622 cfs.

Where is the Sudbury River at Saxonville, MA stream gauge located?

The Sudbury River at Saxonville, MA stream gauge is operated by the USGS in Middlesex County, MA on the Sudbury River. USGS site number 01098530 (coordinates 42.3254, -71.3976).

Sudbury River at Saxonville, MA

USGS Site No: 01098530 • Sudbury River • Middlesex County, MA

Sudbury River at Saxonville, MA on the Sudbury River is currently at 116 cfs (Normal — 55th percentile for this date) . Gage height: 5.46 ft.

Reading from 4 months ago

↑ Upstream on Sudbury River

Sudbury River at Ashland, MA

116

CFS Discharge

5.46

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	20
25th	Low threshold	52
50th (Median)	Normal (median)	85
75th	High threshold	244	Today: 116 cfs
95th	Very High threshold	622

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	126	—
May 27, 2026	126	—
May 26, 2026	129	—
May 25, 2026	133	—
May 24, 2026	112	—
May 23, 2026	105	—
May 22, 2026	114	—
May 21, 2026	119	—
May 20, 2026	122	—
May 19, 2026	83	—
May 18, 2026	57	—
May 17, 2026	69	—
May 16, 2026	79	—
May 15, 2026	114	—
Apr 21, 2026	142	—
Apr 20, 2026	154	—
Apr 19, 2026	165	—
Apr 18, 2026	173	—
Apr 17, 2026	184	—
Apr 16, 2026	188	—
Apr 15, 2026	154	—
Apr 14, 2026	140	—
Apr 13, 2026	139	—
Apr 12, 2026	141	—
Apr 11, 2026	150	—
Apr 10, 2026	159	—
Apr 9, 2026	174	—
Apr 8, 2026	131	—
Apr 7, 2026	130	—
Apr 6, 2026	215	—

Station Information

USGS Site No: 01098530
State: MA
County: Middlesex County
Coordinates: 42.3254, -71.3976
Drainage Area: 106 mi²
Datum (ft): 109.8
HUC Code: 01070005

View on USGS NWIS →

Flood Stage Thresholds

Action Stage: 8.5 ft
Flood Stage: 10.0 ft
Moderate Flood: 12.0 ft
Major Flood: 13.0 ft

Currently 4.54 ft below flood stage.

Recent Extremes

Max discharge: 776 cfs

Mar 12, 2026
Min discharge: 5 cfs

Jul 30, 2025
Days at flood stage: 0

Computed from the local daily-values archive.

Nearby Gauges

Cochituate Bk below Lake Cochituate at Framingham, MA
1.0 mi · 10 cfs

Normal
Sudbury River at Ashland, MA
5.4 mi · 16 cfs

Normal
Stony Brook at Viles Street, Near Weston, MA
6.9 mi · 5 cfs

Normal
Stony Brook Unnamed Tributary 2 near Weston Station
7.0 mi · 7 cfs

Very High
Stony Brook at Rt 20 at Waltham, MA
7.1 mi · 18 cfs

Normal