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Glendo Reservoir water level

Reservoir, Wyoming, United States

Directions

Right now

Normal for mid-October

Surface elevation

4,596.68ft Up 1.37 ft over the last 7 days

Water stored
161,652 acre‑ft
4,590 4,600

History

History
4,5904,600ftOct 13Oct 14Oct 15Oct 16Oct 184,5904,600ftOct 13Oct 15Oct 18
4,5804,5904,600ftSep 20Sep 27Oct 4Oct 11Oct 184,5804,5904,600ftSep 20Oct 4Oct 18
4,5804,6004,6204,640ftOct 2025Jan 2026Apr 2026Jul 2026Oct 20264,5804,6004,6204,640ftOct 2025Apr 2026Oct 2026
4,5804,6004,6204,640ftOct 2016Apr 2019Oct 2021Apr 2024Oct 20264,5804,6004,6204,640ftOct 2016Oct 2021Oct 2026
4,5804,6004,6204,640ftJanMarMayJulSepNov20264,5804,6004,6204,640ftJanAprJulOct2026

202120222023202420252026

Surface elevation Normal range (10–90 %)

What this means

Nothing unusual at Glendo Reservoir right now: the lake level of 4,596.68 ft is in the normal range for mid-October.

The median for mid-October is 4,592.98 ft, based on 36 years of readings, so the lake level is 3.70 ft above typical. On the same day last year the reading was 4,593.12 ft, a difference of +3.56 ft.

The water is rising: up 1.37 ft over the past week. Over the past 30 days it has moved between 4,591.54 ft and 4,596.68 ft.

Many reservoirs are drawn down through summer and fall; most of the refill comes later, with winter rain or spring snowmelt.

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

Key numbers

Median for this date
4,592.98 ft3.70 ft above the median for this date
Normal for this date
4,585.88 ft – 4,603.83 ft8 years in 10 fall in this range (36 years of records)
Same day last year
4,593.12 ft+3.56 ft
Lowest and highest in 30 days
4,591.54 ft – 4,596.68 ft
Lowest and highest in 12 months
4,587.79 ft – 4,626.68 ft

Swimming and boating at Glendo Reservoir

At a normal level, ramps and marinas generally run as usual, and fishing tends to follow the season more than the water level.

If you swim, pick a spot with an easy way out, and remember that drop-offs move as the level changes.

Weather at the gauge

Rain in the last 3 days: 0.12 in.

18 Sun 71° 44° – Wind 13 mph
19 Mon 63° 41° – Wind 17 mph
20 Tue 74° 42° – Wind 8 mph
21 Wed 71° 50° – Wind 15 mph
22 Thu 74° 53° – Wind 11 mph
23 Fri 75° 49° 0.37 in, 41% Wind 18 mph
24 Sat 48° 42° 0.00 in, 44% Wind 17 mph

Forecast: Open-Meteo

Sunrise 07:18 AM Sunset 06:13 PM Daylight 10 hr, 55 min First quarter 62%

Map

Nearby gauges

Gauge Level Compared with normal 24 hours Distance
North Platte River at OrinRiver gauge, North Platte River 3.37 ft Below flood stage −0.01 ft 16 mi
Guernsey ReservoirReservoir 4,396.42 ft Normal 16 mi
North Platte River below Whalen Diversion DamRiver gauge, North Platte River 14.0 cfs Low ±0 23 mi
Laramie River near Fort LaramieRiver gauge, Laramie River 2.06 ft Below flood stage ±0 28 mi

Questions and answers

Is Glendo Reservoir higher than last year?

Yes, it is 3.56 ft higher than on the same day last year, when the reading was 4,593.12 ft.

What is a normal level for Glendo Reservoir in mid-October?

The median for mid-October is 4,592.98 ft. In 8 years out of 10 the reading falls between 4,585.88 ft and 4,603.83 ft, based on 36 years of records.

Is Glendo Reservoir really 4,596.68 ft deep?

No. 4,596.68 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 Glendo Reservoir today?

On Oct 18, 2026, the surface elevation was 4,596.68 ft. Up 1.37 ft over the last 7 days.

Is Glendo Reservoir rising or falling?

Up 1.37 ft over the last 7 days.

Is the level of Glendo Reservoir normal?

Normal 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:345 (Agency page)
Coordinates
42.47720, -104.95060 (WGS84)
Update interval
once a day
Licence
Public domain. Data: U.S. Bureau of Reclamation (RISE), provisional data subject to revision

Published series

ParameterLast valueTime (UTC)Quality
Surface elevation 4,596.68 ft 2026-10-18 06:00 Provisional
Water stored 161,652 acre‑ft 2026-10-18 06:00 Provisional

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How to cite

U.S. Bureau of Reclamation: Glendo Reservoir (usbr:345). Accessed October 19, 2026 via Nivelmap, https://nivelmap.com/en/united-states/wyoming/glendo-reservoir

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.