Rivermatics

USGS Streamgage 09357700

San Juan River at Bolack Ranch Brdg near Farmington, NM

San Juan River at Bolack Ranch Brdg near Farmington, NM is USGS streamgage 09357700 in New Mexico, monitoring river discharge in hydrologic subbasin 14080101. It drains a watershed of about 5,790 square miles. Discharge records at this site go back to 2019. Typical flow runs near 635.5 cfs in July and 443.8 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.

View live conditions & forecast →

Gauge details

State
New Mexico
Drainage area
5,790 sq mi
Gauge elevation
5,299 ft
Subbasin (HUC-8)
14080101
Coordinates
36.70789, -108.15048
USGS site number
09357700
Records begin
2019-12-19 (7 years)
Rivermatics forecast
14-day flow outlook

14-day flow forecast

Based on observations through for San Juan River at Bolack Ranch Brdg near 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
625 653 670
606 651 685
594 661 728
563 656 755
539 669 841
484 648 854
440 635 876
397 612 861
368 603 865
344 591 854
321 572 840
391 686 1,163
323 602 933
323 594 904

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 2 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 — 447.1 —
February — 426.8 —
March — 448.7 —
April — 443.8 —
May — 408.5 —
June — 386.5 —
July — 635.5 —
August — 718.6 —
September — 685.9 —
October — 574.3 —
November — 360.2 —
December — 394.5 —

All values in cubic feet per second (cfs).

Common questions

When does San Juan River at Bolack Ranch Brdg near Farmington, NM normally run highest?
August, on the long-term record. The median daily flow that month is about 718.6 cfs, against 360.2 cfs in November, the lowest month. These are historical normals for the date, not a forecast and not today's reading.
How long has San Juan River at Bolack Ranch Brdg near Farmington, NM been measured?
Discharge records at USGS site 09357700 begin in 2019, about 7 years, covering roughly 1,587 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 Bolack Ranch Brdg near 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 Bolack Ranch Brdg near Farmington, NM?
The gauge sits at 36.70789, -108.15048, in New Mexico, in hydrologic subbasin 14080101, at an elevation of about 5,299 feet, draining roughly 5,790 square miles.
Can I use San Juan River at Bolack Ranch Brdg near 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.

Other gauges in this subbasin