Rivermatics

USGS Streamgage 10170500

Surplus Canal @ Salt Lake City, UT

Surplus Canal @ Salt Lake City, UT is USGS streamgage 10170500 in Utah, monitoring river discharge in hydrologic subbasin 16020204. Discharge records at this site go back to 1942. Typical flow runs near 195.2 cfs in July and 304 cfs in April, with the higher of the two arriving in April.

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Gauge details

State
Utah
Gauge elevation
4,217 ft
Subbasin (HUC-8)
16020204
Coordinates
40.72756, -111.92736
USGS site number
10170500
Records begin
1942-12-01 (84 years)

Typical flow by month

Long-term daily discharge percentiles from the USGS record (up to 83 years of data), averaged within each month. These describe the historical normal range — they are not a forecast and not today's reading.

Historical monthly discharge percentiles in cubic feet per second
Month Low p10 Typical p50 High p90 Range
January 60.5 133.5 807
February 62.9 197.3 1,083.3
March 70 247.9 1,190.6
April 95.3 304 1,262
May 176.6 426.5 1,595.5
June 179.1 412.9 1,646.7
July 112.2 195.2 802.4
August 108.5 196.5 423.8
September 122.6 208.6 419.2
October 104.6 171.2 484
November 91.2 133.4 703.1
December 78.9 136 679.1

All values in cubic feet per second (cfs).

Common questions

When does Surplus Canal @ Salt Lake City, UT normally run highest?
May, on the long-term record. The median daily flow that month is about 426.5 cfs, against 133.4 cfs in November, the lowest month. These are historical normals for the date, not a forecast and not today's reading.
What is a normal flow for Surplus Canal @ Salt Lake City, UT?
It depends on the month. In January, half of days historically fall near 133.5 cfs, with the middle 80% of days between 60.5 and 807 cfs. The month-by-month table on this page gives the full range.
How long has Surplus Canal @ Salt Lake City, UT been measured?
Discharge records at USGS site 10170500 begin in 1942, about 84 years, covering roughly 9,125 days of published daily values. The long record is what makes the monthly percentiles on this page meaningful.
Where is Surplus Canal @ Salt Lake City, UT?
The gauge sits at 40.72756, -111.92736, in Utah, in hydrologic subbasin 16020204, at an elevation of about 4,217 feet.
Can I use Surplus Canal @ Salt Lake City, UT data for flood or safety decisions?
No. Rivermatics provides estimates, not guarantees, and the readings and forecasts here may be delayed, inaccurate, or wrong. Do not use them for navigation or for any safety, rescue, or emergency decision. Check the National Weather Service and USGS directly, and use your own judgment.

Other gauges in this subbasin