Reservoir · Washington · United States · BOR RISE
Billy Clapp Lake and Pinto Dam
33.1% full
Capacity
79.19 hm³
Volume stored
26 hm³
Coordinates
47.448°N, 119.254°W
Last updated
2026-08-12
Current fill
33.1%vs 7 days ago
-0.6%losing
vs 1 year ago
-0.1%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. 47.448, -119.254 · Open in Google Maps
About Billy Clapp Lake and Pinto Dam
As of August 12, 2026, Billy Clapp Lake and Pinto Dam is filled to 33.1% of its total capacity, holding roughly 26 hm³ of water out of a maximum 79 hm³. At this level the reservoir is low.
Over the most recent week on record the fill level has held broadly steady (-0.6 pts), and it sits close to where it was a year earlier.
Across the readings we hold for Billy Clapp Lake and Pinto Dam — 2149 data points between August 15, 2021 and August 12, 2026 — the level has ranged from a low of 3.2% (December 10, 2025) to a high of 34.4% (August 9, 2025). On average the reservoir is fullest around July and at its lowest around February.
It is operated by BOR primarily for multiple purposes. It lies within the Washington basin at 47.448°N, 119.254°W.
Key facts
- Current fill level
- 33.1%
- Water stored
- 26 hm³
- Total capacity
- 79 hm³
- 7-day change
- ▼ 0.6 pts
- Year-on-year
- ▼ 0.1 pts
- Primary use
- Multipurpose
- River basin
- Washington
- Operator
- BOR
- Coordinates
- 47.448°N, 119.254°W
- Last updated
- August 12, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 12 Aug 2026 | 33.1% | 26 |
| 11 Aug 2026 | 33.0% | 26 |
| 10 Aug 2026 | 32.8% | 26 |
| 9 Aug 2026 | 33.2% | 26 |
| 8 Aug 2026 | 33.4% | 26 |
| 7 Aug 2026 | 33.5% | 26 |
| 6 Aug 2026 | 33.6% | 27 |
| 5 Aug 2026 | 33.7% | 27 |
| 4 Aug 2026 | 33.6% | 27 |
| 3 Aug 2026 | 33.5% | 27 |
| 2 Aug 2026 | 33.3% | 26 |
| 1 Aug 2026 | 33.1% | 26 |
Frequently asked questions
What is the current water level of Billy Clapp Lake and Pinto Dam?
As of August 12, 2026, Billy Clapp Lake and Pinto Dam is at 33.1% of its capacity, holding approximately 26 hm³ of water, according to BOR RISE (US Bureau of Reclamation) data.
Is Billy Clapp Lake and Pinto Dam reservoir full?
No. As of August 12, 2026, Billy Clapp Lake and Pinto Dam is low at 33.1% of its capacity, so it is not full.
Is the water level at Billy Clapp Lake and Pinto Dam rising or falling?
The level at Billy Clapp Lake and Pinto Dam has been broadly stable over the latest week on record (-0.6 points).
How much water can Billy Clapp Lake and Pinto Dam hold?
Billy Clapp Lake and Pinto Dam has a total capacity of 79 hm³.
Where is Billy Clapp Lake and Pinto Dam reservoir located?
Billy Clapp Lake and Pinto Dam is located in Washington, United States, within the Washington basin (coordinates 47.448°N, 119.254°W).
What is Billy Clapp Lake and Pinto Dam used for?
Billy Clapp Lake and Pinto Dam is used primarily for multiple purposes, and is managed by BOR.