Rio Grande at Alamosa flow today
Streamflow at DWR telemetry station RIOALACO, in the Rio Grande basin (Division 3).
About this gauge
Rio Grande at Alamosa is one of the 6 stream gauges BasinMind reads for the Rio Grande basin, Division 3 of Colorado's seven water divisions. It is DWR station RIOALACO (37.4808, -105.8780), and the official record is on that station's page.
At Oct 4, 2026, 12:30 p.m. MT it read 19 cfs, about 38 acre-feet a day. DWR telemetry stations carry no daily median, so no percentage is shown.
Other gauges BasinMind reads on the Rio Grande: Rio Grande near Del Norte and Rio Grande near Lobatos.
Across Division 3, DWR lists 9 active calls; the most senior is Garland D,Hdgt 1 on Sangre De Cristo Creek, priority May 31, 1863 (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 Rio Grande basin
- Rio Grande near Del Norte · 927 cfs
- Conejos River near Mogote · 340 cfs
- Alamosa River below Terrace Reservoir · 66 cfs
- Rio Grande near Lobatos