Reservoir · Wyoming · United States · USACE CWMS
Glendo Dam & Reservoir
46.9% full
Capacity
560.42 hm³
Volume stored
263 hm³
Coordinates
42.479°N, 104.951°W
Last updated
2026-07-29
Current fill
46.9%vs 7 days ago
-2.2%losing
vs 1 year ago
-40.6%year-over-year
7-day trend
↓falling
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: 2026-07-29.
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. 42.479, -104.951 · Open in Google Maps
About Glendo Dam & Reservoir
As of July 29, 2026, Glendo Dam & Reservoir is filled to 46.9% of its total capacity, holding roughly 263 hm³ of water out of a maximum 560 hm³. At this level the reservoir is within its normal operating range.
Over the most recent week on record the fill level has fallen by 2.2 percentage points, and it is 40.6 points below its level on the same date a year earlier.
Across the readings we hold for Glendo Dam & Reservoir — 1815 data points between July 31, 2021 and July 29, 2026 — the level has ranged from a low of 16.3% (November 25, 2021) to a high of 105.0% (June 12, 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 lies within the Wyoming basin at 42.479°N, 104.951°W.
Key facts
- Current fill level
- 46.9%
- Water stored
- 263 hm³
- Total capacity
- 560 hm³
- 7-day change
- ▼ 2.2 pts
- Year-on-year
- ▼ 40.6 pts
- Primary use
- Multipurpose
- River basin
- Wyoming
- Operator
- USACE
- Coordinates
- 42.479°N, 104.951°W
- Last updated
- July 29, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 29 Jul 2026 | 46.9% | 263 |
| 28 Jul 2026 | 49.1% | 275 |
| 27 Jul 2026 | 51.4% | 288 |
| 26 Jul 2026 | 53.6% | 300 |
| 25 Jul 2026 | 55.8% | 313 |
| 24 Jul 2026 | 57.4% | 322 |
| 23 Jul 2026 | 58.8% | 329 |
| 22 Jul 2026 | 59.9% | 336 |
| 21 Jul 2026 | 61.4% | 344 |
| 20 Jul 2026 | 62.1% | 348 |
| 19 Jul 2026 | 63.3% | 355 |
| 18 Jul 2026 | 64.6% | 362 |
Frequently asked questions
What is the current water level of Glendo Dam & Reservoir?
As of July 29, 2026, Glendo Dam & Reservoir is at 46.9% of its capacity, holding approximately 263 hm³ of water, according to USACE CWMS (US Army Corps of Engineers) data.
Is Glendo Dam & Reservoir reservoir full?
No. As of July 29, 2026, Glendo Dam & Reservoir is within its normal operating range at 46.9% of its capacity, so it is not full.
Is the water level at Glendo Dam & Reservoir rising or falling?
The level at Glendo Dam & Reservoir is falling — it dropped 2.2 percentage points over the latest week on record.
How much water can Glendo Dam & Reservoir hold?
Glendo Dam & Reservoir has a total capacity of 560 hm³.
Where is Glendo Dam & Reservoir reservoir located?
Glendo Dam & Reservoir is located in Wyoming, United States, within the Wyoming basin (coordinates 42.479°N, 104.951°W).
What is Glendo Dam & Reservoir used for?
Glendo Dam & Reservoir is used primarily for multiple purposes, and is managed by USACE.