Reservoir · Idaho · United States · BOR RISE
Anderson Ranch Reservoir, Dam, and Powerplant (AND)
87.0% full
Capacity
572.6 hm³
Volume stored
498 hm³
Coordinates
43.360°N, 115.450°W
Last updated
2026-06-11
Current fill
87.0%vs 7 days ago
0.0%stable
vs 1 year ago
+9.4%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: 2026-06-11.
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. 43.360, -115.450 · Open in Google Maps
About Anderson Ranch Reservoir, Dam, and Powerplant (AND)
As of June 11, 2026, Anderson Ranch Reservoir, Dam, and Powerplant (AND) is filled to 87.0% of its total capacity, holding roughly 498 hm³ of water out of a maximum 573 hm³. At this level the reservoir is high.
Over the most recent week on record the fill level has held broadly steady (+0.0 pts), and it is 9.4 points above its level on the same date a year earlier.
Across the readings we hold for Anderson Ranch Reservoir, Dam, and Powerplant (AND) — 2191 data points between June 13, 2021 and June 11, 2026 — the level has ranged from a low of 29.8% (February 8, 2022) to a high of 88.8% (May 14, 2026). On average the reservoir is fullest around June and at its lowest around November.
It is operated by BOR primarily for multiple purposes. It lies within the Idaho basin at 43.360°N, 115.450°W.
Key facts
- Current fill level
- 87.0%
- Water stored
- 498 hm³
- Total capacity
- 573 hm³
- 7-day change
- No change
- Year-on-year
- ▲ 9.4 pts
- Primary use
- Multipurpose
- River basin
- Idaho
- Operator
- BOR
- Coordinates
- 43.360°N, 115.450°W
- Last updated
- June 11, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 11 Jun 2026 | 87.0% | 498 |
| 10 Jun 2026 | 87.0% | 498 |
| 9 Jun 2026 | 87.3% | 500 |
| 8 Jun 2026 | 87.5% | 501 |
| 7 Jun 2026 | 87.7% | 502 |
| 6 Jun 2026 | 87.8% | 503 |
| 5 Jun 2026 | 88.0% | 504 |
| 4 Jun 2026 | 88.1% | 505 |
| 3 Jun 2026 | 88.2% | 505 |
| 2 Jun 2026 | 88.3% | 506 |
| 1 Jun 2026 | 88.5% | 507 |
| 31 May 2026 | 88.6% | 507 |
Frequently asked questions
What is the current water level of Anderson Ranch Reservoir, Dam, and Powerplant (AND)?
As of June 11, 2026, Anderson Ranch Reservoir, Dam, and Powerplant (AND) is at 87.0% of its capacity, holding approximately 498 hm³ of water, according to BOR RISE (US Bureau of Reclamation) data.
Is Anderson Ranch Reservoir, Dam, and Powerplant (AND) reservoir full?
No. As of June 11, 2026, Anderson Ranch Reservoir, Dam, and Powerplant (AND) is high at 87.0% of its capacity, so it is not full.
Is the water level at Anderson Ranch Reservoir, Dam, and Powerplant (AND) rising or falling?
The level at Anderson Ranch Reservoir, Dam, and Powerplant (AND) has been broadly stable over the latest week on record (0.0 points).
How much water can Anderson Ranch Reservoir, Dam, and Powerplant (AND) hold?
Anderson Ranch Reservoir, Dam, and Powerplant (AND) has a total capacity of 573 hm³.
Where is Anderson Ranch Reservoir, Dam, and Powerplant (AND) reservoir located?
Anderson Ranch Reservoir, Dam, and Powerplant (AND) is located in Idaho, United States, within the Idaho basin (coordinates 43.360°N, 115.450°W).
What is Anderson Ranch Reservoir, Dam, and Powerplant (AND) used for?
Anderson Ranch Reservoir, Dam, and Powerplant (AND) is used primarily for multiple purposes, and is managed by BOR.