Reservoir · Wyoming · United States · USACE CWMS
Glendo Dam & Reservoir
37.0% full
Capacity
560.42 hm³
Volume stored
208 hm³
Vs month average
119% of normal
Coordinates
42.479°N, 104.951°W
Last updated
2026-10-27
Current fill
37.0%vs 7 days ago
+1.4 ppgaining
vs 1 year ago
+3.9 ppyear-over-year
7-day trend
↑rising
Drought context
Storage vs October average
119%of normal
37.0% full on 2026-10-27, against an average of 31.2% for October across 6 years of readings (+5.8 points).
Drought Monitor at this site · 20 October 2026
D1moderate drought
The ground at Glendo Dam & Reservoir's coordinates falls inside the D1 area of the weekly U.S. Drought Monitor map. That describes local conditions — rainfall, soil moisture, streamflow — not the reservoir's storage. Wyoming drought figures →
Data source: USACE CWMS — US Army Corps of Engineers — daily reservoir storage volume. Capacity is the design (normal full-pool) capacity from the US National Inventory of Dams (NID); fill % = current volume ÷ design capacity. Last reading: 2026-10-27.
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. 42.479°N, 104.951°W · Open in Google Maps
About Glendo Dam & Reservoir
As of October 27, 2026, Glendo Dam & Reservoir is filled to 37.0% of its total capacity, holding 207.62 hm³ of water out of a maximum 560.42 hm³. At this level the reservoir is low.
Over the most recent week on record the fill level has risen by 1.4 percentage points, and it is 3.9 points above its level on the same date a year earlier.
Across the readings we hold for Glendo Dam & Reservoir — 1784 data points between October 29, 2021 and October 27, 2026 — the level has ranged from a low of 16.3% (November 25, 2021) to a high of 104.9% (June 11, 2023). On average the reservoir is fullest around June and at its lowest around September.
It is operated by USACE primarily for multiple purposes. It is at 42.479°N, 104.951°W.
Key facts
- Current fill level
- 37.0% of total capacity
- Water stored
- 207.62 hm³
- Total capacity
- 560.42 hm³
- 7-day change
- ▲ 1.4 pp
- Year-on-year
- ▲ 3.9 pp
- Primary use
- Multipurpose
- Operator
- USACE
- Coordinates
- 42.479°N, 104.951°W
- Last updated
- October 27, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 27 Oct 2026 | 37.0% | 207.62 |
| 26 Oct 2026 | 36.9% | 206.59 |
| 25 Oct 2026 | 36.6% | 205.27 |
| 24 Oct 2026 | 36.5% | 204.32 |
| 23 Oct 2026 | 36.2% | 203.01 |
| 22 Oct 2026 | 36.1% | 202.06 |
| 21 Oct 2026 | 35.8% | 200.91 |
| 20 Oct 2026 | 35.6% | 199.61 |
| 19 Oct 2026 | 35.6% | 199.39 |
| 18 Oct 2026 | 35.2% | 197.46 |
| 17 Oct 2026 | 35.1% | 196.61 |
| 16 Oct 2026 | 34.9% | 195.83 |