Reservoir · Idaho · United States · BOR RISE
Lake Waha
44.1% full
Capacity
4.27 hm³
Volume stored
2 hm³
Coordinates
46.210°N, 116.838°W
Last updated
2026-08-12
Current fill
44.1%vs 7 days ago
-4.0%losing
vs 1 year ago
+9.6%year-over-year
7-day trend
↓falling
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: 2026-08-12.
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
As of August 12, 2026, Lake Waha is filled to 44.1% 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 fallen by 4.0 percentage points, and it is 9.6 points above its level on the same date a year earlier.
Across the readings we hold for Lake Waha — 2184 data points between August 15, 2021 and August 12, 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
- 44.1%
- Water stored
- 2 hm³
- Total capacity
- 4 hm³
- 7-day change
- ▼ 4.0 pts
- Year-on-year
- ▲ 9.6 pts
- Primary use
- Multipurpose
- River basin
- Idaho
- Operator
- BOR
- Coordinates
- 46.210°N, 116.838°W
- Last updated
- August 12, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 12 Aug 2026 | 44.1% | 2 |
| 11 Aug 2026 | 44.6% | 2 |
| 10 Aug 2026 | 45.2% | 2 |
| 9 Aug 2026 | 45.7% | 2 |
| 8 Aug 2026 | 46.1% | 2 |
| 7 Aug 2026 | 46.6% | 2 |
| 6 Aug 2026 | 47.3% | 2 |
| 5 Aug 2026 | 48.1% | 2 |
| 4 Aug 2026 | 48.7% | 2 |
| 3 Aug 2026 | 49.4% | 2 |
| 2 Aug 2026 | 49.9% | 2 |
| 1 Aug 2026 | 50.5% | 2 |
Frequently asked questions
What is the current water level of Lake Waha?
As of August 12, 2026, Lake Waha is at 44.1% of its capacity, holding approximately 2 hm³ of water, according to BOR RISE (US Bureau of Reclamation) data.
Is Lake Waha reservoir full?
No. As of August 12, 2026, Lake Waha is within its normal operating range at 44.1% of its capacity, so it is not full.
Is the water level at Lake Waha rising or falling?
The level at Lake Waha is falling — it dropped 4.0 percentage points over the latest week on record.
How much water can Lake Waha hold?
Lake Waha has a total capacity of 4 hm³.
Where is Lake Waha reservoir located?
Lake Waha is located in Idaho, United States, within the Idaho basin (coordinates 46.210°N, 116.838°W).
What is Lake Waha used for?
Lake Waha is used primarily for multiple purposes, and is managed by BOR.