San Juan River at Four Corners flow today
Streamflow at USGS station 09371010, in the San Juan/Dolores basin (Division 7).
About this gauge
San Juan River at Four Corners is one of the 36 stream gauges BasinMind reads for the San Juan/Dolores basin, Division 7 of Colorado's seven water divisions. It is USGS station 09371010 (37.0011, -109.0296), and the official record is on that station's page.
At Oct 4, 2026, 12:00 p.m. MT it read 2,250 cfs, about 4,463 acre-feet a day. The median flow for this date over the gauge's record is 887 cfs, so today's flow is 254% of it: above median.
On the San Juan River, the nearest gauge BasinMind reads is San Juan River near Carracas upstream.
Across Division 7, DWR lists 6 active calls; the most senior is Lynd-Plumteau Ck Ditch on Plumtaw Creek, priority May 15, 1888 (the full list). A call governs the stretch of river it is placed on, so look for this river in the list.
One cfs is a cubic foot of water passing each second, about 448.8 gallons per minute; percent of median compares today's flow with the median for this date (cfs and acre-feet). How calls work: What is a water call?.
Main-stem gauges in the San Juan/Dolores basin
- Dolores River near Slick Rock
- Dolores River near Bedrock · 19 cfs
- Lost Canyon Creek near Dolores · 0 cfs
- Animas River at Durango · 925 cfs
- Animas River below Durango Pump Plant near Durango · 942 cfs
- Animas River below Silverton · 245 cfs
- San Juan River near Carracas · 453 cfs
More gauges on the San Juan River
Reservoirs in the San Juan/Dolores basin
- Navajo Reservoir
- McPhee Reservoir
- Vallecito Reservoir
- Lake Nighthorse
- Lemon Reservoir
- Jackson Gulch Reservoir