Reservoir · Colorado · United States · BOR RISE
Willow Creek Reservoir and Dam (CO)
69.9% full
Capacity
13.02 hm³
Volume stored
9 hm³
Coordinates
40.148°N, 105.942°W
Last updated
2026-07-28
Current fill
69.9%vs 7 days ago
+0.5%gaining
vs 1 year ago
+0.3%year-over-year
7-day trend
→stable
Data source: BOR RISE — US Bureau of Reclamation — 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: 2026-07-28.
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. 40.148, -105.942 · Open in Google Maps
About Willow Creek Reservoir and Dam (CO)
As of July 28, 2026, Willow Creek Reservoir and Dam (CO) is filled to 69.9% of its total capacity, holding roughly 9 hm³ of water out of a maximum 13 hm³. At this level the reservoir is within its normal operating range.
Over the most recent week on record the fill level has held broadly steady (+0.5 pts), and it sits close to where it was a year earlier.
Across the readings we hold for Willow Creek Reservoir and Dam (CO) — 1823 data points between July 31, 2021 and July 28, 2026 — the level has ranged from a low of 50.2% (December 7, 2023) to a high of 89.9% (May 8, 2022). On average the reservoir is fullest around March and at its lowest around December.
It is operated by BOR primarily for multiple purposes. It lies within the Colorado basin at 40.148°N, 105.942°W.
Key facts
- Current fill level
- 69.9%
- Water stored
- 9 hm³
- Total capacity
- 13 hm³
- 7-day change
- ▲ 0.5 pts
- Year-on-year
- ▲ 0.3 pts
- Primary use
- Multipurpose
- River basin
- Colorado
- Operator
- BOR
- Coordinates
- 40.148°N, 105.942°W
- Last updated
- July 28, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 28 Jul 2026 | 69.9% | 9 |
| 27 Jul 2026 | 69.4% | 9 |
| 26 Jul 2026 | 69.2% | 9 |
| 25 Jul 2026 | 69.0% | 9 |
| 24 Jul 2026 | 68.9% | 9 |
| 23 Jul 2026 | 68.4% | 9 |
| 22 Jul 2026 | 68.1% | 9 |
| 21 Jul 2026 | 67.7% | 9 |
| 20 Jul 2026 | 67.4% | 9 |
| 19 Jul 2026 | 67.3% | 9 |
| 18 Jul 2026 | 67.2% | 9 |
| 17 Jul 2026 | 67.1% | 9 |
Frequently asked questions
What is the current water level of Willow Creek Reservoir and Dam (CO)?
As of July 28, 2026, Willow Creek Reservoir and Dam (CO) is at 69.9% of its capacity, holding approximately 9 hm³ of water, according to BOR RISE (US Bureau of Reclamation) data.
Is Willow Creek Reservoir and Dam (CO) reservoir full?
No. As of July 28, 2026, Willow Creek Reservoir and Dam (CO) is within its normal operating range at 69.9% of its capacity, so it is not full.
Is the water level at Willow Creek Reservoir and Dam (CO) rising or falling?
The level at Willow Creek Reservoir and Dam (CO) has been broadly stable over the latest week on record (+0.5 points).
How much water can Willow Creek Reservoir and Dam (CO) hold?
Willow Creek Reservoir and Dam (CO) has a total capacity of 13 hm³.
Where is Willow Creek Reservoir and Dam (CO) reservoir located?
Willow Creek Reservoir and Dam (CO) is located in Colorado, United States, within the Colorado basin (coordinates 40.148°N, 105.942°W).
What is Willow Creek Reservoir and Dam (CO) used for?
Willow Creek Reservoir and Dam (CO) is used primarily for multiple purposes, and is managed by BOR.