Reservoir · Idaho · United States · BOR RISE
Little Wood River Reservoir and Dam
46.4% full
Capacity
37 hm³
Volume stored
17 hm³
Coordinates
43.425°N, 114.027°W
Last updated
2026-08-12
Current fill
46.4%vs 7 days ago
-5.4%losing
vs 1 year ago
+20.1%year-over-year
7-day trend
↓falling
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. 43.425, -114.027 · Open in Google Maps
About Little Wood River Reservoir and Dam
As of August 12, 2026, Little Wood River Reservoir and Dam is filled to 46.4% of its total capacity, holding roughly 17 hm³ of water out of a maximum 37 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 5.4 percentage points, and it is 20.1 points above its level on the same date a year earlier.
Across the readings we hold for Little Wood River Reservoir and Dam — 2187 data points between August 15, 2021 and August 12, 2026 — the level has ranged from a low of 0.2% (August 15, 2021) to a high of 99.3% (July 1, 2023). 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 Idaho basin at 43.425°N, 114.027°W.
Key facts
- Current fill level
- 46.4%
- Water stored
- 17 hm³
- Total capacity
- 37 hm³
- 7-day change
- ▼ 5.4 pts
- Year-on-year
- ▲ 20.1 pts
- Primary use
- Multipurpose
- River basin
- Idaho
- Operator
- BOR
- Coordinates
- 43.425°N, 114.027°W
- Last updated
- August 12, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 12 Aug 2026 | 46.4% | 17 |
| 11 Aug 2026 | 47.2% | 17 |
| 10 Aug 2026 | 48.0% | 18 |
| 9 Aug 2026 | 48.7% | 18 |
| 8 Aug 2026 | 49.5% | 18 |
| 7 Aug 2026 | 50.3% | 19 |
| 6 Aug 2026 | 51.1% | 19 |
| 5 Aug 2026 | 51.8% | 19 |
| 4 Aug 2026 | 52.6% | 19 |
| 3 Aug 2026 | 53.5% | 20 |
| 2 Aug 2026 | 54.3% | 20 |
| 31 Jul 2026 | 55.9% | 21 |
Frequently asked questions
What is the current water level of Little Wood River Reservoir and Dam?
As of August 12, 2026, Little Wood River Reservoir and Dam is at 46.4% of its capacity, holding approximately 17 hm³ of water, according to BOR RISE (US Bureau of Reclamation) data.
Is Little Wood River Reservoir and Dam reservoir full?
No. As of August 12, 2026, Little Wood River Reservoir and Dam is within its normal operating range at 46.4% of its capacity, so it is not full.
Is the water level at Little Wood River Reservoir and Dam rising or falling?
The level at Little Wood River Reservoir and Dam is falling — it dropped 5.4 percentage points over the latest week on record.
How much water can Little Wood River Reservoir and Dam hold?
Little Wood River Reservoir and Dam has a total capacity of 37 hm³.
Where is Little Wood River Reservoir and Dam reservoir located?
Little Wood River Reservoir and Dam is located in Idaho, United States, within the Idaho basin (coordinates 43.425°N, 114.027°W).
What is Little Wood River Reservoir and Dam used for?
Little Wood River Reservoir and Dam is used primarily for multiple purposes, and is managed by BOR.