How high is the Tuolumne River at Modesto CA right now?

The Tuolumne River at Modesto CA is currently flowing at 202 cubic feet per second with a gage height of 36.88 feet, based on the most recent USGS instantaneous reading.

Is the flow on the Tuolumne River at Modesto CA normal for this time of year?

Current flow is classified as very low for October 28. Today's discharge is at the 9th percentile compared to the long-term historical record at this gauge.

Is the Tuolumne River at Modesto CA at flood stage?

No — the gage height is 18.12 feet below the NWS flood-stage threshold of 55.0 feet.

What is the historical median flow for the Tuolumne River at Modesto CA on October 28?

The long-term median discharge for this date is 657 cfs based on USGS daily statistics. The 10th–95th percentile range historically is 226 to 2,400 cfs.

Where is the Tuolumne River at Modesto CA stream gauge located?

The Tuolumne River at Modesto CA stream gauge is operated by the USGS in Stanislaus County, CA on the Tuolumne River. USGS site number 11290000 (coordinates 37.6272, -120.9844).

Tuolumne River at Modesto CA

USGS Site No: 11290000 • Tuolumne River • Stanislaus County, CA

Tuolumne River at Modesto CA on the Tuolumne River is currently at 202 cfs (Very Low — 9th percentile for this date) . Gage height: 36.88 ft.

Reading from 4 months ago

↑ Upstream on Tuolumne River

Tuolumne River below Lagrange Dam near Lagrange CA

202

CFS Discharge

36.88

Gage Height (ft)

Very Low

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	226	Today: 202 cfs
25th	Low threshold	356
50th (Median)	Normal (median)	657
75th	High threshold	956
95th	Very High threshold	2,400

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	202	—
May 27, 2026	199	—
May 26, 2026	198	—
May 25, 2026	209	—
May 24, 2026	204	—
May 23, 2026	194	—
May 22, 2026	185	—
May 21, 2026	183	—
May 20, 2026	184	—
May 19, 2026	186	—
May 18, 2026	195	—
May 17, 2026	192	—
May 16, 2026	170	—
May 15, 2026	184	—
Apr 20, 2026	822	—
Apr 19, 2026	542	—
Apr 18, 2026	352	—
Apr 17, 2026	245	—
Apr 16, 2026	239	—
Apr 15, 2026	239	—
Apr 14, 2026	239	—
Apr 13, 2026	253	—
Apr 12, 2026	271	—
Apr 11, 2026	277	—
Apr 10, 2026	269	—
Apr 9, 2026	266	—
Apr 8, 2026	260	—
Apr 7, 2026	263	—
Apr 6, 2026	260	—
Apr 5, 2026	253	—

Station Information

USGS Site No: 11290000
State: CA
County: Stanislaus County
Coordinates: 37.6272, -120.9844
Drainage Area: 1,884 mi²
Datum (ft): 2.5
HUC Code: 18040009

View on USGS NWIS →

Flood Stage Thresholds

Action Stage: 50.5 ft
Flood Stage: 55.0 ft
Moderate Flood: 66.0 ft
Major Flood: 67.0 ft

Currently 18.12 ft below flood stage.

Recent Extremes

Max discharge: 5,870 cfs

Dec 22, 2025
Min discharge: 69 cfs

Jun 13, 2025
Days at flood stage: 0

Computed from the local daily-values archive.

Nearby Gauges

Stanislaus River at Ripon CA
9.9 mi · 1,320 cfs

High
Stanislaus River at Oakdale CA
12.6 mi

Unknown
San Joaquin River near Crows Landing CA
13.6 mi · 510 cfs

Low
Del Puerto C near Patterson CA
15.7 mi · 0 cfs

High
San Joaquin River near Vernalis CA
15.8 mi · 1,940 cfs

Normal