Rivermatics

USGS Streamgage 09220000

East Fork Smiths Fork near Robertson, WY

East Fork Smiths Fork near Robertson, WY is USGS streamgage 09220000 in Wyoming, monitoring river discharge in hydrologic subbasin 14040107. It drains a watershed of about 55 square miles. Discharge records at this site go back to 1939. Typical flow runs near 100.8 cfs in July and 9.3 cfs in April, with the higher of the two arriving in July. Rivermatics issues a daily machine-learned flow outlook for this gauge, reaching 14 days ahead.

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Gauge details

State
Wyoming
Drainage area
55 sq mi
Gauge elevation
8,488 ft
Subbasin (HUC-8)
14040107
Coordinates
41.05386, -110.39864
USGS site number
09220000
Records begin
1939-07-01 (87 years)
Rivermatics forecast
14-day flow outlook

14-day flow forecast

Based on observations through for East Fork Smiths Fork near Robertson, WY. Each day carries a median estimate and the band the model expects the flow to fall within — not a single number to plan against. Forecasts are re-issued daily; see the live screen for the current outlook.

Forecast daily mean discharge in cubic feet per second, by date
Date Low p10 Expected p50 High p90 Range
27 32.1 36
21.8 29.9 35.2
19.5 28.7 35.6
17.6 27.9 36.2
16.2 27.2 36.7
14.2 26.3 36.6
13.4 26.2 38
12.7 25.5 37.5
11.2 24.4 36.7
10.3 23.3 35.7
10 22.7 35.5
9.7 22.2 35.2
9.7 21.6 34.7
9.5 21.2 34.5

All values in cubic feet per second (cfs). Estimates only — do not use them for navigation or for any safety, rescue, or emergency decision.

Typical flow by month

Long-term daily discharge percentiles from the USGS record (up to 86 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 2.4 5.6 9.6
February 2.5 5.8 9.6
March 2.6 5.9 11.3
April 3.9 9.3 29.2
May 31.3 76.6 195.7
June 88.8 175.1 398.4
July 42.9 100.8 184.5
August 16.5 41.9 90.9
September 10.2 25.9 66.5
October 8.5 14.3 28.9
November 4.7 9.5 16.2
December 2.7 6 10.5

All values in cubic feet per second (cfs).

Common questions

When does East Fork Smiths Fork near Robertson, WY normally run highest?
June, on the long-term record. The median daily flow that month is about 175.1 cfs, against 5.6 cfs in January, the lowest month. These are historical normals for the date, not a forecast and not today's reading.
What is a normal flow for East Fork Smiths Fork near Robertson, WY?
It depends on the month. In January, half of days historically fall near 5.6 cfs, with the middle 80% of days between 2.4 and 9.6 cfs. The month-by-month table on this page gives the full range.
How long has East Fork Smiths Fork near Robertson, WY been measured?
Discharge records at USGS site 09220000 begin in 1939, about 87 years, covering roughly 9,200 days of published daily values. The long record is what makes the monthly percentiles on this page meaningful.
Is there a flow forecast for East Fork Smiths Fork near Robertson, WY?
Yes. Rivermatics trains a machine-learned model — a temporal-fusion transformer — on this basin's observed flows, weather, and snowpack, and issues a daily flow outlook reaching 14 days ahead: a median estimate inside a confidence band, not a single number to bet on. Every forecast is scored against days the model never trained on, and that track record is published on the live gauge screen. Open live conditions to see the current outlook.
Where is East Fork Smiths Fork near Robertson, WY?
The gauge sits at 41.05386, -110.39864, in Wyoming, in hydrologic subbasin 14040107, at an elevation of about 8,488 feet, draining roughly 55 square miles.
Can I use East Fork Smiths Fork near Robertson, WY 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