Reservoir · Colorado · United States · BOR RISE
Twin Lakes Reservoir
Twin Lakes Reservoir and Dam
62.9% full
Capacity
173.92 hm³
Volume stored
109 hm³
Coordinates
39.080°N, 106.314°W
Last updated
2026-09-09
Current fill
62.9%vs 7 days ago
-0.4%losing
vs 1 year ago
-11.3%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: 2026-09-09.
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. 39.080, -106.314 · Open in Google Maps
About Twin Lakes Reservoir
As of September 9, 2026, Twin Lakes Reservoir is filled to 62.9% of its total capacity, holding roughly 109 hm³ of water out of a maximum 174 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 (-0.4 pts), and it is 11.3 points below its level on the same date a year earlier.
Across the readings we hold for Twin Lakes Reservoir — 2039 data points between September 12, 2021 and September 9, 2026 — the level has ranged from a low of 62.8% (May 11, 2026) to a high of 96.4% (June 25, 2024). On average the reservoir is fullest around October and at its lowest around April.
It is operated by BOR primarily for multiple purposes. It lies within the Colorado basin at 39.080°N, 106.314°W.
Key facts
- Current fill level
- 62.9%
- Water stored
- 109 hm³
- Total capacity
- 174 hm³
- 7-day change
- ▼ 0.4 pts
- Year-on-year
- ▼ 11.3 pts
- Primary use
- Multipurpose
- River basin
- Colorado
- Operator
- BOR
- Coordinates
- 39.080°N, 106.314°W
- Last updated
- September 9, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 9 Sep 2026 | 62.9% | 109 |
| 8 Sep 2026 | 63.1% | 110 |
| 7 Sep 2026 | 63.1% | 110 |
| 6 Sep 2026 | 63.2% | 110 |
| 5 Sep 2026 | 63.2% | 110 |
| 4 Sep 2026 | 63.3% | 110 |
| 3 Sep 2026 | 63.3% | 110 |
| 2 Sep 2026 | 63.3% | 110 |
| 1 Sep 2026 | 63.4% | 110 |
| 31 Aug 2026 | 63.4% | 110 |
| 30 Aug 2026 | 63.4% | 110 |
| 29 Aug 2026 | 63.5% | 111 |