Reservoir · Colorado · United States · BOR RISE
Vallecito Reservoir
Vallecito Reservoir and Dam
85.4% full
Capacity
159.98 hm³
Volume stored
137 hm³
Vs month average
180% of normal
Coordinates
37.390°N, 107.556°W
Last updated
2026-10-27
Current fill
85.4%vs 7 days ago
+19.9 ppgaining
vs 1 year ago
+18.4 ppyear-over-year
7-day trend
↑rising
Drought context
Storage vs October average
180%of normal
85.4% full on 2026-10-27, against an average of 47.4% for October across 6 years of readings (+38.0 points).
Drought Monitor at this site · 27 October 2026
Nonenot in a drought category
Vallecito Reservoir's coordinates fall outside every category on 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: 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: 2026-10-27.
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. 37.390°N, 107.556°W · Open in Google Maps
About Vallecito Reservoir
As of October 27, 2026, Vallecito Reservoir is filled to 85.4% of its total capacity, holding 136.62 hm³ of water out of a maximum 159.98 hm³. At this level the reservoir is high.
Over the most recent week on record the fill level has risen by 19.9 percentage points, and it is 18.4 points above its level on the same date a year earlier.
Across the readings we hold for Vallecito Reservoir — 1824 data points between October 30, 2021 and October 27, 2026 — the level has ranged from a low of 19.9% (September 14, 2026) to a high of 96.0% (June 24, 2023). On average the reservoir is fullest around June and at its lowest around September.
It is operated by BOR primarily for multiple purposes. It is at 37.390°N, 107.556°W.
Key facts
- Current fill level
- 85.4% of total capacity
- Water stored
- 136.62 hm³
- Total capacity
- 159.98 hm³
- 7-day change
- ▲ 19.9 pp
- Year-on-year
- ▲ 18.4 pp
- Primary use
- Multipurpose
- Operator
- BOR
- Coordinates
- 37.390°N, 107.556°W
- Last updated
- October 27, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 27 Oct 2026 | 85.4% | 136.62 |
| 26 Oct 2026 | 85.7% | 137.17 |
| 25 Oct 2026 | 85.2% | 136.27 |
| 24 Oct 2026 | 82.9% | 132.65 |
| 23 Oct 2026 | 79.3% | 126.94 |
| 22 Oct 2026 | 72.2% | 115.46 |
| 21 Oct 2026 | 66.5% | 106.42 |
| 20 Oct 2026 | 65.5% | 104.77 |
| 19 Oct 2026 | 64.6% | 103.28 |
| 18 Oct 2026 | 63.5% | 101.56 |
| 17 Oct 2026 | 62.3% | 99.59 |
| 16 Oct 2026 | 60.9% | 97.41 |