Reservoir · Oregon · United States · BOR RISE
Fourmile Lake and Fourmile Lake Dam
7.0% full
Capacity
19.24 hm³
Volume stored
1 hm³
Coordinates
42.456°N, 122.243°W
Last updated
2026-08-12
Current fill
7.0%vs 7 days ago
0.0%stable
vs 1 year ago
-14.2%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: 2026-08-12.
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. 42.456, -122.243 · Open in Google Maps
About Fourmile Lake and Fourmile Lake Dam
As of August 12, 2026, Fourmile Lake and Fourmile Lake Dam is filled to 7.0% of its total capacity, holding roughly 1 hm³ of water out of a maximum 19 hm³. At this level the reservoir is critically low.
Over the most recent week on record the fill level has held broadly steady (+0.0 pts), and it is 14.2 points below its level on the same date a year earlier.
Across the readings we hold for Fourmile Lake and Fourmile Lake Dam — 2186 data points between August 15, 2021 and August 12, 2026 — the level has ranged from a low of 6.9% (June 15, 2026) to a high of 83.5% (June 10, 2025). 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 Oregon basin at 42.456°N, 122.243°W.
Key facts
- Current fill level
- 7.0%
- Water stored
- 1 hm³
- Total capacity
- 19 hm³
- 7-day change
- No change
- Year-on-year
- ▼ 14.2 pts
- Primary use
- Multipurpose
- River basin
- Oregon
- Operator
- BOR
- Coordinates
- 42.456°N, 122.243°W
- Last updated
- August 12, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 12 Aug 2026 | 7.0% | 1 |
| 11 Aug 2026 | 7.0% | 1 |
| 10 Aug 2026 | 7.0% | 1 |
| 8 Aug 2026 | 7.0% | 1 |
| 7 Aug 2026 | 7.0% | 1 |
| 6 Aug 2026 | 7.0% | 1 |
| 5 Aug 2026 | 7.0% | 1 |
| 4 Aug 2026 | 7.0% | 1 |
| 3 Aug 2026 | 7.0% | 1 |
| 2 Aug 2026 | 7.0% | 1 |
| 1 Aug 2026 | 7.0% | 1 |
| 31 Jul 2026 | 7.0% | 1 |
Frequently asked questions
What is the current water level of Fourmile Lake and Fourmile Lake Dam?
As of August 12, 2026, Fourmile Lake and Fourmile Lake Dam is at 7.0% of its capacity, holding approximately 1 hm³ of water, according to BOR RISE (US Bureau of Reclamation) data.
Is Fourmile Lake and Fourmile Lake Dam reservoir full?
No. As of August 12, 2026, Fourmile Lake and Fourmile Lake Dam is critically low at 7.0% of its capacity, so it is not full.
Is the water level at Fourmile Lake and Fourmile Lake Dam rising or falling?
The level at Fourmile Lake and Fourmile Lake Dam has been broadly stable over the latest week on record (0.0 points).
How much water can Fourmile Lake and Fourmile Lake Dam hold?
Fourmile Lake and Fourmile Lake Dam has a total capacity of 19 hm³.
Where is Fourmile Lake and Fourmile Lake Dam reservoir located?
Fourmile Lake and Fourmile Lake Dam is located in Oregon, United States, within the Oregon basin (coordinates 42.456°N, 122.243°W).
What is Fourmile Lake and Fourmile Lake Dam used for?
Fourmile Lake and Fourmile Lake Dam is used primarily for multiple purposes, and is managed by BOR.