Reservoir · Utah · United States · BOR RISE
Willard Bay Reservoir
Willard Bay Reservoir and Arthur V Watkins Dam
48.1% full
Capacity
265.82 hm³
Volume stored
128 hm³
Vs month average
84% of normal
Coordinates
41.377°N, 112.083°W
Last updated
2026-10-24
Current fill
48.1%vs 7 days ago
-0.1 pplosing
vs 1 year ago
+9.4 ppyear-over-year
7-day trend
→stable
Drought context
Storage vs October average
84%of normal
48.1% full on 2026-10-24, against an average of 57.2% for October across 6 years of readings (-9.1 points).
Drought Monitor at this site · 20 October 2026
D2severe drought
The ground at Willard Bay 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. Utah 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: 2026-10-24.
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. 41.377°N, 112.083°W · Open in Google Maps
About Willard Bay Reservoir
As of October 24, 2026, Willard Bay Reservoir is filled to 48.1% of its total capacity, holding 127.94 hm³ of water out of a maximum 265.82 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 (-0.1 pp), and it is 9.4 points above its level on the same date a year earlier.
Across the readings we hold for Willard Bay Reservoir — 1822 data points between October 29, 2021 and October 24, 2026 — the level has ranged from a low of 31.8% (November 23, 2022) to a high of 102.7% (June 27, 2023). On average the reservoir is fullest around May and at its lowest around December.
It is operated by BOR primarily for multiple purposes. It is at 41.377°N, 112.083°W.
Key facts
- Current fill level
- 48.1% of total capacity
- Water stored
- 127.94 hm³
- Total capacity
- 265.82 hm³
- 7-day change
- ▼ 0.1 pp
- Year-on-year
- ▲ 9.4 pp
- Primary use
- Multipurpose
- Operator
- BOR
- Coordinates
- 41.377°N, 112.083°W
- Last updated
- October 24, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 24 Oct 2026 | 48.1% | 127.94 |
| 23 Oct 2026 | 48.1% | 127.94 |
| 22 Oct 2026 | 48.1% | 127.94 |
| 21 Oct 2026 | 48.1% | 127.94 |
| 20 Oct 2026 | 48.1% | 127.94 |
| 19 Oct 2026 | 48.1% | 127.94 |
| 18 Oct 2026 | 48.1% | 127.94 |
| 17 Oct 2026 | 48.2% | 128.06 |
| 16 Oct 2026 | 48.2% | 128.06 |
| 15 Oct 2026 | 48.2% | 128.06 |
| 14 Oct 2026 | 48.2% | 128.06 |
| 13 Oct 2026 | 48.5% | 129.03 |