How high is the Surplus Canal @ Salt Lake City, UT right now?

The Surplus Canal @ Salt Lake City, UT is currently flowing at 262 cubic feet per second with a gage height of 9.53 feet, based on the most recent USGS instantaneous reading.

Is the flow on the Surplus Canal @ Salt Lake City, UT normal for this time of year?

Current flow is classified as high for October 28. Today's discharge is at the 77th percentile compared to the long-term historical record at this gauge.

Is the Surplus Canal @ Salt Lake City, UT at flood stage?

No — the gage height is 26.07 feet below the NWS flood-stage threshold of 35.6 feet.

What is the historical median flow for the Surplus Canal @ Salt Lake City, UT on October 28?

The long-term median discharge for this date is 134 cfs based on USGS daily statistics. The 10th–95th percentile range historically is 88 to 1,070 cfs.

Where is the Surplus Canal @ Salt Lake City, UT stream gauge located?

The Surplus Canal @ Salt Lake City, UT stream gauge is operated by the USGS in Salt Lake County, UT on the Surplus Canal @ Salt Lake City. USGS site number 10170500 (coordinates 40.7276, -111.9274).

Surplus Canal @ Salt Lake City, UT

USGS Site No: 10170500 • Surplus Canal @ Salt Lake City • Salt Lake County, UT

Surplus Canal @ Salt Lake City, UT on the Surplus Canal @ Salt Lake City is currently at 262 cfs (High — 77th percentile for this date) . Gage height: 9.53 ft.

Reading from 4 months ago

262

CFS Discharge

9.53

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	88
25th	Low threshold	108
50th (Median)	Normal (median)	134
75th	High threshold	194
95th	Very High threshold	1,070	Today: 262 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	311	—
May 27, 2026	324	—
May 26, 2026	269	—
May 25, 2026	187	—
May 24, 2026	172	—
May 23, 2026	177	—
May 22, 2026	193	—
May 21, 2026	217	—
May 20, 2026	214	—
May 19, 2026	236	—
May 18, 2026	320	—
May 17, 2026	226	—
May 16, 2026	227	—
May 15, 2026	237	—
Apr 20, 2026	157	—
Apr 19, 2026	163	—
Apr 18, 2026	160	—
Apr 17, 2026	170	—
Apr 16, 2026	180	—
Apr 15, 2026	178	—
Apr 14, 2026	230	—
Apr 13, 2026	290	—
Apr 12, 2026	221	—
Apr 11, 2026	219	—
Apr 10, 2026	215	—
Apr 9, 2026	217	—
Apr 8, 2026	224	—
Apr 7, 2026	230	—
Apr 6, 2026	240	—
Apr 5, 2026	248	—

Station Information

USGS Site No: 10170500
State: UT
County: Salt Lake County
Coordinates: 40.7276, -111.9274
Datum (ft): 4,216.7
HUC Code: 16020204

View on USGS NWIS →

Flood Stage Thresholds

Action Stage: 26.7 ft
Flood Stage: 35.6 ft
Moderate Flood: 38.4 ft
Major Flood: 41.1 ft

Currently 26.07 ft below flood stage.

Recent Extremes

Max discharge: 1,200 cfs

Oct 4, 2025
Min discharge: 98 cfs

Dec 11, 2025
Days at flood stage: 0

Computed from the local daily-values archive.

Nearby Gauges

Com Flw Jordan River & Surplus Canal @ Slc, UT
0.1 mi

Unknown
Jordan River @ 1700 South @ Salt Lake City, UT
0.5 mi · 153 cfs

Normal
south Conduit Of 8th south Conduits @ Jordan Riv @ Slc
1.9 mi

Unknown
Little Cottonwood Creek @ Jordan River near Slc
4.6 mi · 49 cfs

Very High
Red Butte Creek at Fort Douglas, Near Slc, UT
7.3 mi · 1 cfs

Normal