Reservoir · Colorado · United States · USACE CWMS
Chatfield Dam & Reservoir
84.0% full
Capacity
42.22 hm³
Volume stored
35 hm³
Vs month average
107% of normal
Coordinates
39.559°N, 105.062°W
Last updated
2026-10-06
Current fill
84.0%vs 7 days ago
Stale7-day trend
StaleDrought context
Storage vs October average
107%of normal
84.0% full on 2026-10-06, against an average of 78.8% for October across 2 years of readings (+5.2 points).
Drought Monitor at this site · 27 October 2026
D2severe drought
The ground at Chatfield Dam & Reservoir's coordinates falls inside the D2 area of the weekly U.S. Drought Monitor map. That describes local conditions — rainfall, soil moisture, streamflow — not the reservoir's storage. Colorado drought figures →
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: 2026-10-06.
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. 39.559°N, 105.062°W · Open in Google Maps
On the map
Zoom out for the other countries we track · click one to open itLoading map…
About Chatfield Dam & Reservoir
As of October 6, 2026, Chatfield Dam & Reservoir is filled to 84.0% of its total capacity, holding 35.48 hm³ of water out of a maximum 42.22 hm³. The reading is past the freshness window, so it is shown as stale.
The 7-day change is not shown, because the latest reading is past the freshness window.
Across the readings we hold for Chatfield Dam & Reservoir — 328 data points between October 7, 2021 and October 6, 2026 — the level has ranged from a low of 77.4% (October 17, 2021) to a high of 100.0% (June 8, 2026). On average the reservoir is fullest around June and at its lowest around October.
It is operated by USACE primarily for multiple purposes. It is at 39.559°N, 105.062°W.
Key facts
- Current fill level
- 84.0% of total capacity
- Water stored
- 35.48 hm³
- Total capacity
- 42.22 hm³
- 7-day change
- Stale
- Primary use
- Multipurpose
- Operator
- USACE
- Coordinates
- 39.559°N, 105.062°W
- Last updated
- October 6, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 6 Oct 2026 | 84.0% | 35.48 |
| 5 Oct 2026 | 84.1% | 35.49 |
| 4 Oct 2026 | 84.1% | 35.49 |
| 3 Oct 2026 | 84.1% | 35.51 |
| 2 Oct 2026 | 84.3% | 35.59 |
| 1 Oct 2026 | 84.3% | 35.59 |
| 30 Sep 2026 | 84.4% | 35.62 |
| 29 Sep 2026 | 84.5% | 35.66 |
| 28 Sep 2026 | 84.6% | 35.73 |
| 27 Sep 2026 | 84.8% | 35.79 |
| 26 Sep 2026 | 84.9% | 35.86 |
| 25 Sep 2026 | 85.0% | 35.9 |