Reservoir · Colorado · United States · USACE CWMS
Chatfield Dam & Reservoir
84.1% full
Capacity
43.1 hm³
Volume stored
36 hm³
Coordinates
39.559°N, 105.062°W
Last updated
2026-09-18
Current fill
84.1%vs 7 days ago
-0.6%losing
vs 1 year ago
N/A7-day trend
→stable
Data source: USACE CWMS — US Army Corps of Engineers — daily reservoir storage volume. Design capacity is unavailable for this site, so fill % is estimated against the 5-year maximum storage and may overstate fullness. Last reading: 2026-09-18.
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. 39.559, -105.062 · Open in Google Maps
About Chatfield Dam & Reservoir
As of September 18, 2026, Chatfield Dam & Reservoir is filled to 84.1% of its total capacity, holding roughly 36 hm³ of water out of a maximum 43 hm³. At this level the reservoir is high.
Over the most recent week on record the fill level has held broadly steady (-0.6 pts).
Across the readings we hold for Chatfield Dam & Reservoir — 328 data points between September 19, 2021 and September 18, 2026 — the level has ranged from a low of 75.8% (October 17, 2021) to a high of 100.0% (May 24, 2026). On average the reservoir is fullest around May and at its lowest around October.
It is operated by USACE primarily for multiple purposes. It lies within the Colorado basin at 39.559°N, 105.062°W.
Key facts
- Current fill level
- 84.1%
- Water stored
- 36 hm³
- Total capacity
- 43 hm³
- 7-day change
- ▼ 0.6 pts
- Primary use
- Multipurpose
- River basin
- Colorado
- Operator
- USACE
- Coordinates
- 39.559°N, 105.062°W
- Last updated
- September 18, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 18 Sep 2026 | 84.1% | 36 |
| 17 Sep 2026 | 84.2% | 36 |
| 16 Sep 2026 | 84.4% | 36 |
| 15 Sep 2026 | 84.4% | 36 |
| 14 Sep 2026 | 84.5% | 36 |
| 13 Sep 2026 | 84.6% | 36 |
| 12 Sep 2026 | 84.6% | 36 |
| 11 Sep 2026 | 84.7% | 37 |
| 10 Sep 2026 | 84.8% | 37 |
| 9 Sep 2026 | 84.9% | 37 |
| 8 Sep 2026 | 85.0% | 37 |
| 7 Sep 2026 | 85.0% | 37 |