Reservoir · Oregon · United States · BOR RISE
Thief Valley Reservoir and Dam (THF)
56.6% full
Capacity
16.41 hm³
Volume stored
9 hm³
Coordinates
45.013°N, 117.781°W
Last updated
2026-06-11
Current fill
56.6%vs 7 days ago
-1.3%losing
vs 1 year ago
-44.4%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: 2026-06-11.
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. 45.013, -117.781 · Open in Google Maps
About Thief Valley Reservoir and Dam (THF)
As of June 11, 2026, Thief Valley Reservoir and Dam (THF) is filled to 56.6% of its total capacity, holding roughly 9 hm³ of water out of a maximum 16 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 (-1.3 pts), and it is 44.4 points below its level on the same date a year earlier.
Across the readings we hold for Thief Valley Reservoir and Dam (THF) — 2192 data points between June 13, 2021 and June 11, 2026 — the level has ranged from a low of 0.0% (August 12, 2021) to a high of 105.0% (June 6, 2022). On average the reservoir is fullest around April and at its lowest around September.
It is operated by BOR primarily for multiple purposes. It lies within the Oregon basin at 45.013°N, 117.781°W.
Key facts
- Current fill level
- 56.6%
- Water stored
- 9 hm³
- Total capacity
- 16 hm³
- 7-day change
- ▼ 1.3 pts
- Year-on-year
- ▼ 44.4 pts
- Primary use
- Multipurpose
- River basin
- Oregon
- Operator
- BOR
- Coordinates
- 45.013°N, 117.781°W
- Last updated
- June 11, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 11 Jun 2026 | 56.6% | 9 |
| 10 Jun 2026 | 57.9% | 10 |
| 9 Jun 2026 | 59.7% | 10 |
| 8 Jun 2026 | 60.8% | 10 |
| 7 Jun 2026 | 61.9% | 10 |
| 6 Jun 2026 | 62.6% | 10 |
| 5 Jun 2026 | 63.3% | 10 |
| 4 Jun 2026 | 64.1% | 11 |
| 3 Jun 2026 | 65.0% | 11 |
| 2 Jun 2026 | 66.4% | 11 |
| 1 Jun 2026 | 67.8% | 11 |
| 31 May 2026 | 69.0% | 11 |
Frequently asked questions
What is the current water level of Thief Valley Reservoir and Dam (THF)?
As of June 11, 2026, Thief Valley Reservoir and Dam (THF) is at 56.6% of its capacity, holding approximately 9 hm³ of water, according to BOR RISE (US Bureau of Reclamation) data.
Is Thief Valley Reservoir and Dam (THF) reservoir full?
No. As of June 11, 2026, Thief Valley Reservoir and Dam (THF) is within its normal operating range at 56.6% of its capacity, so it is not full.
Is the water level at Thief Valley Reservoir and Dam (THF) rising or falling?
The level at Thief Valley Reservoir and Dam (THF) has been broadly stable over the latest week on record (-1.3 points).
How much water can Thief Valley Reservoir and Dam (THF) hold?
Thief Valley Reservoir and Dam (THF) has a total capacity of 16 hm³.
Where is Thief Valley Reservoir and Dam (THF) reservoir located?
Thief Valley Reservoir and Dam (THF) is located in Oregon, United States, within the Oregon basin (coordinates 45.013°N, 117.781°W).
What is Thief Valley Reservoir and Dam (THF) used for?
Thief Valley Reservoir and Dam (THF) is used primarily for multiple purposes, and is managed by BOR.