Rivermatics

USGS Streamgage 09365000

San Juan River at Farmington, NM

San Juan River at Farmington, NM is USGS streamgage 09365000 in New Mexico, monitoring river discharge in hydrologic subbasin 14080105. It sits on the San Juan River, alongside 9 other gauges Rivermatics tracks on the same river. It drains a watershed of about 7,240 square miles. Discharge records at this site go back to 1924. Typical flow runs near 1,310.6 cfs in July and 1,787.7 cfs in April, with the higher of the two arriving in April. Rivermatics issues a daily machine-learned flow outlook for this gauge, reaching 14 days ahead.

View live conditions & forecast →

Gauge details

State
New Mexico
Drainage area
7,240 sq mi
Gauge elevation
5,243 ft
Subbasin (HUC-8)
14080105
Coordinates
36.72302, -108.22559
USGS site number
09365000
Records begin
1924-05-18 (102 years)
Rivermatics forecast
14-day flow outlook

14-day flow forecast

Based on observations through for San Juan River at Farmington, NM. 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
821 872 919
785 861 939
766 854 956
765 872 1,047
757 885 1,095
773 925 1,199
771 932 1,240
746 929 1,238
755 946 1,297
739 938 1,278
711 921 1,240
689 900 1,186
674 885 1,160
666 890 1,207

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 90 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 442.4 730.3 2,021.3
February 486.4 805.4 2,266.9
March 562.6 1,049 2,978.7
April 622.2 1,787.7 6,153
May 1,274.8 3,670 8,906.5
June 1,203 3,991.3 10,174.7
July 472.3 1,310.6 4,893.2
August 362 898 2,567.4
September 354.7 849.9 2,367
October 455.5 863.5 2,080
November 471.8 763.1 1,876.3
December 430.5 731.5 1,901

All values in cubic feet per second (cfs).

Common questions

When does San Juan River at Farmington, NM normally run highest?
June, on the long-term record. The median daily flow that month is about 3,991.3 cfs, against 730.3 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 San Juan River at Farmington, NM?
It depends on the month. In January, half of days historically fall near 730.3 cfs, with the middle 80% of days between 442.4 and 2,021.3 cfs. The month-by-month table on this page gives the full range.
How long has San Juan River at Farmington, NM been measured?
Discharge records at USGS site 09365000 begin in 1924, about 102 years, covering roughly 8,679 days of published daily values. The long record is what makes the monthly percentiles on this page meaningful.
Is there a flow forecast for San Juan River at Farmington, NM?
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 San Juan River at Farmington, NM?
The gauge sits at 36.72302, -108.22559, in New Mexico, in hydrologic subbasin 14080105, at an elevation of about 5,243 feet, draining roughly 7,240 square miles.
Can I use San Juan River at Farmington, NM 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.

Upstream and downstream on the San Juan River

Every gauge Rivermatics tracks on this river, ordered by drainage area — upstream first. See the San Juan River in full.

Other gauges in this subbasin