Colorado River at Windy Gap near Granby flow today
Streamflow at USGS station 09034250, in the Colorado River basin (Division 5).
About this gauge
Colorado River at Windy Gap near Granby is one of the 107 stream gauges BasinMind reads for the Colorado River basin, Division 5 of Colorado's seven water divisions. It is USGS station 09034250 (40.1083, -106.0042), and the official record is on that station's page.
At Oct 4, 2026, 12:45 p.m. MT it read 93 cfs, about 184 acre-feet a day. The median flow for this date over the gauge's record is 94 cfs, so today's flow is 99% of it: near median.
On the Colorado River, the nearest gauges BasinMind reads are Colorado River near Granby upstream and Colorado River near Kremmling downstream.
Across Division 5, DWR lists 34 active calls; the most senior is Four Mile Ditch on Fourmile Creek, priority Nov 6, 1881 (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 Colorado River basin
- Colorado River near Cameo · 1,180 cfs
- Colorado River near Colorado-Utah State Line · 2,090 cfs
- Colorado River above Gunnison River at Grand Junction · 303 cfs
- Colorado River below Glenwood Springs · 1,080 cfs
- Colorado River near Dotsero · 591 cfs
- Colorado River near Kremmling · 388 cfs
- Colorado River below Lake Granby · 29 cfs
More gauges on the Colorado River
- Colorado River below Baker Gulch near Grand Lake
- Colorado River below Shadow Mountain Reservoir
- Colorado River near Granby
- Colorado River at Catamount Bridge
- Colorado River below Grand Valley Diversion near Palisade
Reservoirs in the Colorado River basin
- Lake Granby
- Dillon Reservoir
- Green Mountain Reservoir
- Ruedi Reservoir
- Williams Fork Reservoir
- Wolford Mountain Reservoir
- Homestake Reservoir
- Shadow Mountain Reservoir
- Rifle Gap Reservoir
- Willow Creek Reservoir