Reservoir · Idaho · United States · BOR RISE
Lake Lowell and Deer Flat Dams
67.8% full
Capacity
196.57 hm³
Volume stored
133 hm³
Coordinates
43.583°N, 116.733°W
Last updated
2026-08-12
Current fill
67.8%vs 7 days ago
-1.4%losing
vs 1 year ago
+4.7%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: 2026-08-12.
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. 43.583, -116.733 · Open in Google Maps
About Lake Lowell and Deer Flat Dams
As of August 12, 2026, Lake Lowell and Deer Flat Dams is filled to 67.8% of its total capacity, holding roughly 133 hm³ of water out of a maximum 197 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 (-1.4 pts), and it is 4.7 points above its level on the same date a year earlier.
Across the readings we hold for Lake Lowell and Deer Flat Dams — 2187 data points between August 15, 2021 and August 12, 2026 — the level has ranged from a low of 34.6% (August 23, 2024) to a high of 95.7% (May 25, 2025). On average the reservoir is fullest around May and at its lowest around August.
It is operated by BOR primarily for multiple purposes. It lies within the Idaho basin at 43.583°N, 116.733°W.
Key facts
- Current fill level
- 67.8%
- Water stored
- 133 hm³
- Total capacity
- 197 hm³
- 7-day change
- ▼ 1.4 pts
- Year-on-year
- ▲ 4.7 pts
- Primary use
- Multipurpose
- River basin
- Idaho
- Operator
- BOR
- Coordinates
- 43.583°N, 116.733°W
- Last updated
- August 12, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 12 Aug 2026 | 67.8% | 133 |
| 10 Aug 2026 | 68.3% | 134 |
| 8 Aug 2026 | 68.5% | 135 |
| 7 Aug 2026 | 68.7% | 135 |
| 6 Aug 2026 | 68.9% | 135 |
| 5 Aug 2026 | 69.2% | 136 |
| 4 Aug 2026 | 69.4% | 136 |
| 3 Aug 2026 | 69.7% | 137 |
| 2 Aug 2026 | 69.9% | 138 |
| 1 Aug 2026 | 70.2% | 138 |
| 31 Jul 2026 | 70.4% | 138 |
| 30 Jul 2026 | 70.7% | 139 |
Frequently asked questions
What is the current water level of Lake Lowell and Deer Flat Dams?
As of August 12, 2026, Lake Lowell and Deer Flat Dams is at 67.8% of its capacity, holding approximately 133 hm³ of water, according to BOR RISE (US Bureau of Reclamation) data.
Is Lake Lowell and Deer Flat Dams reservoir full?
No. As of August 12, 2026, Lake Lowell and Deer Flat Dams is within its normal operating range at 67.8% of its capacity, so it is not full.
Is the water level at Lake Lowell and Deer Flat Dams rising or falling?
The level at Lake Lowell and Deer Flat Dams has been broadly stable over the latest week on record (-1.4 points).
How much water can Lake Lowell and Deer Flat Dams hold?
Lake Lowell and Deer Flat Dams has a total capacity of 197 hm³.
Where is Lake Lowell and Deer Flat Dams reservoir located?
Lake Lowell and Deer Flat Dams is located in Idaho, United States, within the Idaho basin (coordinates 43.583°N, 116.733°W).
What is Lake Lowell and Deer Flat Dams used for?
Lake Lowell and Deer Flat Dams is used primarily for multiple purposes, and is managed by BOR.