Lake Granby water level

Name: Lake Granby water level (U.S. Bureau of Reclamation)
Creator: U.S. Bureau of Reclamation
License: https://www.usbr.gov/main/disclaim.html

Lake, Colorado, United States

Directions

Very low for mid-October

Surface elevation

8,235.25ft Down 0.45 ft over the last 7 days

Measured Oct 16, 2026 (2 days ago)

Water stored: 262,483 acre‑ft

History

What this means

Lake Granby is far below normal for mid-October, with the lake level at 8,235.25 ft.

That puts it 33.12 ft below the median of 8,268.37 ft for mid-October, based on 36 years of readings. A year ago it stood at 8,265.94 ft (−30.69 ft).

It has dropped 0.45 ft over the past week. With the water still dropping, the shoreline keeps moving out. In the last month it has stayed between 8,235.25 ft and 8,238.26 ft.

Lakes and reservoirs often sit lower in fall after a summer of evaporation and use, and recover with winter rain and spring snowmelt.

Compared with 36 years of daily readings for this time of year. How to read levels

Key numbers

Median for this date: 8,268.37 ft33.12 ft below the median for this date
Normal for this date: 8,248.73 ft – 8,277.34 ft8 years in 10 fall in this range (36 years of records)
Same day last year: 8,265.94 ft−30.69 ft
Lowest and highest in 30 days: 8,235.25 ft – 8,238.26 ft
Lowest and highest in 12 months: 8,235.29 ft – 8,265.95 ft

On the water at Lake Granby

A receding shoreline opens up beaches but also uncovers hazards: stumps, rocks and soft mud that are usually well under water.

Wear a life jacket on the water. Most boating deaths involve people who were not wearing one.

Weather at the gauge

No rain in the last 3 days.

17 Sat 61° 27° – Wind 10 mph

18 Sun 63° 33° – Wind 8 mph

19 Mon 62° 40° 0.01 in Wind 8 mph

20 Tue 60° 38° – Wind 11 mph

21 Wed 63° 39° – Wind 12 mph

22 Thu 63° 45° – Wind 6 mph

23 Fri 54° 35° 0.12 in, 56% Wind 21 mph

Forecast: Open-Meteo

Sunrise 07:17 AM Sunset 06:22 PM Daylight 11 hr, 5 min First quarter 43%

Map

Nearby gauges

Gauge	Level	Compared with normal	24 hours	Distance
Shadow Mountain LakeLake	8,366.61 ft	Normal		2.3 mi
Colorado River below Shadow Mountain ReservoirRiver gauge, Colorado River	37.2 cfs	Normal	±0	2.4 mi
Colorado River below Lake GranbyRiver gauge, Colorado River	23.0 cfs	High	±0	2.6 mi
Willow Creek below Willow Creek ReservoirRiver gauge, Willow Creek	2.35 ft	Below flood stage	−0.57 ft	4.4 mi
Willow Creek ReservoirReservoir	8,116.78 ft	Very low		4.4 mi
Grand LakeLake	8,366.55 ft	Normal		5.5 mi
Colorado River at Windy Gap, near GranbyRiver gauge, Colorado River	3.46 ft	Below flood stage	−0.11 ft	9 mi
Colorado River below Baker Gulch near Grand LakeRiver gauge, Colorado River	4.10 ft	Below flood stage	+0.04 ft	10 mi

Questions and answers

How does Lake Granby compare with last year?

It is 30.69 ft lower than on the same day last year, when the reading was 8,265.94 ft.

What is a normal level for Lake Granby in mid-October?

The median for mid-October is 8,268.37 ft. In 8 years out of 10 the reading falls between 8,248.73 ft and 8,277.34 ft, based on 36 years of records.

Is Lake Granby really 8,235.25 ft deep?

No. 8,235.25 ft is the height of the water surface above sea level (or the agency's vertical datum), not the depth of the water.

What is the water level of Lake Granby today?

On Oct 16, 2026, the surface elevation was 8,235.25 ft. Down 0.45 ft over the last 7 days.

Is Lake Granby rising or falling?

Down 0.45 ft over the last 7 days.

Is the level of Lake Granby normal?

Very low for mid-October. Compared with 36 years of daily readings for this time of year.

How often is this data updated?

The U.S. Bureau of Reclamation publishes a new reading once a day. This page refreshes within minutes of each update.

For specialists

Station codes, datum, parameters, data quality and downloads

Operator: U.S. Bureau of Reclamation
Station code: usbr:351 (Agency page)
Coordinates: 40.18200, -105.87110 (WGS84)
Update interval: once a day
Licence: Public domain. Data: U.S. Bureau of Reclamation (RISE), provisional data subject to revision

Published series

Parameter	Last value	Time (UTC)	Quality
Surface elevation	8,235.25 ft	2026-10-16 06:00	Provisional
Water stored	262,483 acre‑ft	2026-10-16 06:00	Provisional

Download

Embed this gauge

Add a live card for this gauge to your website. It updates on its own and links back here.

<iframe src="https://nivelmap.com/embed/19302?lang=en" width="360" height="230" style="border:0;max-width:100%" loading="lazy" title="Lake Granby water level"></iframe>

How to cite

U.S. Bureau of Reclamation: Lake Granby (usbr:351). Accessed October 17, 2026 via Nivelmap, https://nivelmap.com/en/united-states/colorado/lake-granby

How we check values

Each reading is stored as published. We hold back values that jump faster than physically plausible and show the measurement time with every value.

Readings are provisional, can be delayed or wrong and are not a flood warning. Read the disclaimer