Reservoir · Utah · United States · BOR RISE
Trial Lake
79.5% full
Capacity
2.05 hm³
Volume stored
2 hm³
Coordinates
40.680°N, 110.957°W
Last updated
2026-07-27
Current fill
79.5%vs 7 days ago
-1.5%losing
vs 1 year ago
-20.0%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: 2026-07-27.
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. 40.680, -110.957 · Open in Google Maps
About Trial Lake
As of July 27, 2026, Trial Lake is filled to 79.5% of its total capacity, holding roughly 2 hm³ of water out of a maximum 2 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 (-1.5 pts), and it is 20.0 points below its level on the same date a year earlier.
Across the readings we hold for Trial Lake — 1823 data points between July 31, 2021 and July 27, 2026 — the level has ranged from a low of 19.0% (September 25, 2025) to a high of 100.5% (May 18, 2022). On average the reservoir is fullest around June and at its lowest around October.
It is operated by BOR primarily for multiple purposes. It lies within the Utah basin at 40.680°N, 110.957°W.
Key facts
- Current fill level
- 79.5%
- Water stored
- 2 hm³
- Total capacity
- 2 hm³
- 7-day change
- ▼ 1.5 pts
- Year-on-year
- ▼ 20.0 pts
- Primary use
- Multipurpose
- River basin
- Utah
- Operator
- BOR
- Coordinates
- 40.680°N, 110.957°W
- Last updated
- July 27, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 27 Jul 2026 | 79.5% | 2 |
| 26 Jul 2026 | 81.0% | 2 |
| 25 Jul 2026 | 82.0% | 2 |
| 24 Jul 2026 | 83.4% | 2 |
| 23 Jul 2026 | 84.9% | 2 |
| 22 Jul 2026 | 86.3% | 2 |
| 21 Jul 2026 | 87.3% | 2 |
| 20 Jul 2026 | 88.8% | 2 |
| 19 Jul 2026 | 89.3% | 2 |
| 18 Jul 2026 | 89.8% | 2 |
| 17 Jul 2026 | 89.8% | 2 |
| 16 Jul 2026 | 89.8% | 2 |
Frequently asked questions
What is the current water level of Trial Lake?
As of July 27, 2026, Trial Lake is at 79.5% of its capacity, holding approximately 2 hm³ of water, according to BOR RISE (US Bureau of Reclamation) data.
Is Trial Lake reservoir full?
No. As of July 27, 2026, Trial Lake is within its normal operating range at 79.5% of its capacity, so it is not full.
Is the water level at Trial Lake rising or falling?
The level at Trial Lake has been broadly stable over the latest week on record (-1.5 points).
How much water can Trial Lake hold?
Trial Lake has a total capacity of 2 hm³.
Where is Trial Lake reservoir located?
Trial Lake is located in Utah, United States, within the Utah basin (coordinates 40.680°N, 110.957°W).
What is Trial Lake used for?
Trial Lake is used primarily for multiple purposes, and is managed by BOR.