Reservoir · Washington · United States · BOR RISE
Banks Lake and Dry Falls Dam (BNK)
53.4% full
Capacity
1,572.69 hm³
Volume stored
839 hm³
Coordinates
47.617°N, 119.299°W
Last updated
2026-07-21
Current fill
53.4%vs 7 days ago
-0.1%losing
vs 1 year ago
-1.2%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: 2026-07-21.
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. 47.617, -119.299 · Open in Google Maps
About Banks Lake and Dry Falls Dam (BNK)
As of July 21, 2026, Banks Lake and Dry Falls Dam (BNK) is filled to 53.4% of its total capacity, holding roughly 839 hm³ of water out of a maximum 1,573 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 pts), and it is 1.2 points below its level on the same date a year earlier.
Across the readings we hold for Banks Lake and Dry Falls Dam (BNK) — 2058 data points between July 31, 2021 and July 21, 2026 — the level has ranged from a low of 42.1% (August 31, 2024) to a high of 55.5% (June 30, 2023). On average the reservoir is fullest around March and at its lowest around September.
It is operated by BOR primarily for multiple purposes. It lies within the Washington basin at 47.617°N, 119.299°W.
Key facts
- Current fill level
- 53.4%
- Water stored
- 839 hm³
- Total capacity
- 1,573 hm³
- 7-day change
- ▼ 0.1 pts
- Year-on-year
- ▼ 1.2 pts
- Primary use
- Multipurpose
- River basin
- Washington
- Operator
- BOR
- Coordinates
- 47.617°N, 119.299°W
- Last updated
- July 21, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 21 Jul 2026 | 53.4% | 839 |
| 12 May 2026 | 53.5% | 842 |
| 10 May 2026 | 53.6% | 843 |
| 9 May 2026 | 53.3% | 838 |
| 8 May 2026 | 53.1% | 836 |
| 7 May 2026 | 52.9% | 832 |
| 6 May 2026 | 53.1% | 836 |
| 5 May 2026 | 53.4% | 840 |
| 4 May 2026 | 53.9% | 847 |
| 3 May 2026 | 54.1% | 850 |
| 2 May 2026 | 54.2% | 852 |
| 1 May 2026 | 54.3% | 853 |
Frequently asked questions
What is the current water level of Banks Lake and Dry Falls Dam (BNK)?
As of July 21, 2026, Banks Lake and Dry Falls Dam (BNK) is at 53.4% of its capacity, holding approximately 839 hm³ of water, according to BOR RISE (US Bureau of Reclamation) data.
Is Banks Lake and Dry Falls Dam (BNK) reservoir full?
No. As of July 21, 2026, Banks Lake and Dry Falls Dam (BNK) is within its normal operating range at 53.4% of its capacity, so it is not full.
Is the water level at Banks Lake and Dry Falls Dam (BNK) rising or falling?
The level at Banks Lake and Dry Falls Dam (BNK) has been broadly stable over the latest week on record (-0.1 points).
How much water can Banks Lake and Dry Falls Dam (BNK) hold?
Banks Lake and Dry Falls Dam (BNK) has a total capacity of 1,573 hm³.
Where is Banks Lake and Dry Falls Dam (BNK) reservoir located?
Banks Lake and Dry Falls Dam (BNK) is located in Washington, United States, within the Washington basin (coordinates 47.617°N, 119.299°W).
What is Banks Lake and Dry Falls Dam (BNK) used for?
Banks Lake and Dry Falls Dam (BNK) is used primarily for multiple purposes, and is managed by BOR.