Lake Granby water level today
Storage at Lake Granby in the Colorado River basin (Division 5), from Colorado DWR's daily reading.
About Lake Granby
Lake Granby is one of the 10 reservoirs BasinMind follows in the Colorado River basin, Division 5 of Colorado's seven water divisions. BasinMind's registry lists its operator as USBR / Northern Water (C-BT). Its recorded capacity is 539,758 acre-feet, the largest of the 10 and 41% of the capacity BasinMind tracks in the division.
On October 3, 2026 it held 266,281 acre-feet, 49% of that capacity, with room for about 273,477 acre-feet more. Over the seven days before, storage fell by 4,710 acre-feet. Taken together, the division's reservoirs with a current reading stood at 45% of capacity (554,790 of 1,236,931 acre-feet).
Daily storage comes from the Colorado Division of Water Resources, DWR station GRARESCO; the official record is on that station's page. The nearest stream gauge BasinMind reads is Colorado River below Lake Granby, about 1 miles away in a straight line.
An acre-foot is the water that would cover one acre a foot deep, about 325,851 gallons; percent full compares storage with recorded capacity, not with what is normal for the date (cfs and acre-feet).
Other reservoirs in the Colorado River basin
- Dillon Reservoir · 64% full
- Green Mountain Reservoir · 11% full
- Ruedi Reservoir · 38% full
- Williams Fork Reservoir · 26% full
- Wolford Mountain Reservoir
- Homestake Reservoir · 41% full
- Shadow Mountain Reservoir · 92% full
- Rifle Gap Reservoir · 12% full
- Willow Creek Reservoir · 63% full
Stream gauges in the Colorado River basin
- Colorado River near Cameo
- Colorado River near Colorado-Utah State Line
- Colorado River above Gunnison River at Grand Junction
- Colorado River below Glenwood Springs
- Colorado River near Dotsero
- Colorado River near Kremmling
- Colorado River at Windy Gap near Granby
- Colorado River below Lake Granby