Reservoir · Idaho · United States · BOR RISE
Lake Waha (WAH)
52.8% full
Capacity
4.27 hm³
Volume stored
2 hm³
Coordinates
46.210°N, 116.838°W
Last updated
2026-07-28
Current fill
52.8%vs 7 days ago
-0.4%losing
vs 1 year ago
-19.1%year-over-year
7-day trend
→stable
Data source: BOR RISE — US Bureau of Reclamation — daily reservoir storage volume. Design capacity is unavailable for this site, so fill % is estimated against the 5-year maximum storage and may overstate fullness. Last reading: 2026-07-28.
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. 46.210, -116.838 · Open in Google Maps
About Lake Waha (WAH)
As of July 28, 2026, Lake Waha (WAH) is filled to 52.8% of its total capacity, holding roughly 2 hm³ of water out of a maximum 4 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 (-0.4 pts), and it is 19.1 points below its level on the same date a year earlier.
Across the readings we hold for Lake Waha (WAH) — 2184 data points between July 31, 2021 and July 28, 2026 — the level has ranged from a low of 25.3% (December 3, 2025) to a high of 100.0% (June 16, 2022). On average the reservoir is fullest around May and at its lowest around December.
It is operated by BOR primarily for multiple purposes. It lies within the Idaho basin at 46.210°N, 116.838°W.
Key facts
- Current fill level
- 52.8%
- Water stored
- 2 hm³
- Total capacity
- 4 hm³
- 7-day change
- ▼ 0.4 pts
- Year-on-year
- ▼ 19.1 pts
- Primary use
- Multipurpose
- River basin
- Idaho
- Operator
- BOR
- Coordinates
- 46.210°N, 116.838°W
- Last updated
- July 28, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 28 Jul 2026 | 52.8% | 2 |
| 27 Jul 2026 | 53.2% | 2 |
| 26 Jul 2026 | 54.0% | 2 |
| 25 Jul 2026 | 54.8% | 2 |
| 24 Jul 2026 | 55.7% | 2 |
| 22 Jul 2026 | 56.8% | 2 |
| 21 Jul 2026 | 57.4% | 2 |
| 20 Jul 2026 | 57.9% | 2 |
| 19 Jul 2026 | 58.6% | 3 |
| 18 Jul 2026 | 59.4% | 3 |
| 17 Jul 2026 | 60.4% | 3 |
| 16 Jul 2026 | 61.2% | 3 |
Frequently asked questions
What is the current water level of Lake Waha (WAH)?
As of July 28, 2026, Lake Waha (WAH) is at 52.8% of its capacity, holding approximately 2 hm³ of water, according to BOR RISE (US Bureau of Reclamation) data.
Is Lake Waha (WAH) reservoir full?
No. As of July 28, 2026, Lake Waha (WAH) is within its normal operating range at 52.8% of its capacity, so it is not full.
Is the water level at Lake Waha (WAH) rising or falling?
The level at Lake Waha (WAH) has been broadly stable over the latest week on record (-0.4 points).
How much water can Lake Waha (WAH) hold?
Lake Waha (WAH) has a total capacity of 4 hm³.
Where is Lake Waha (WAH) reservoir located?
Lake Waha (WAH) is located in Idaho, United States, within the Idaho basin (coordinates 46.210°N, 116.838°W).
What is Lake Waha (WAH) used for?
Lake Waha (WAH) is used primarily for multiple purposes, and is managed by BOR.