Reservoir · Montana · United States · BOR RISE
Lima Reservoir Upstream of Clark Canyon Reservoir
29.9% full
Capacity
92.73 hm³
Volume stored
28 hm³
Coordinates
44.656°N, 112.371°W
Last updated
2026-09-09
Current fill
29.9%vs 7 days ago
-0.1%losing
vs 1 year ago
+1.5%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: 2026-09-09.
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. 44.656, -112.371 · Open in Google Maps
About Lima Reservoir Upstream of Clark Canyon Reservoir
As of September 9, 2026, Lima Reservoir Upstream of Clark Canyon Reservoir is filled to 29.9% of its total capacity, holding roughly 28 hm³ of water out of a maximum 93 hm³. At this level the reservoir is low.
Over the most recent week on record the fill level has held broadly steady (-0.1 pts), and it is 1.5 points above its level on the same date a year earlier.
Across the readings we hold for Lima Reservoir Upstream of Clark Canyon Reservoir — 1885 data points between September 12, 2021 and September 9, 2026 — the level has ranged from a low of 18.1% (September 5, 2022) to a high of 105.0% (May 28, 2023). On average the reservoir is fullest around May and at its lowest around October.
It is operated by BOR primarily for multiple purposes. It lies within the Montana basin at 44.656°N, 112.371°W.
Key facts
- Current fill level
- 29.9%
- Water stored
- 28 hm³
- Total capacity
- 93 hm³
- 7-day change
- ▼ 0.1 pts
- Year-on-year
- ▲ 1.5 pts
- Primary use
- Multipurpose
- River basin
- Montana
- Operator
- BOR
- Coordinates
- 44.656°N, 112.371°W
- Last updated
- September 9, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 9 Sep 2026 | 29.9% | 28 |
| 8 Sep 2026 | 29.9% | 28 |
| 7 Sep 2026 | 29.9% | 28 |
| 6 Sep 2026 | 29.9% | 28 |
| 5 Sep 2026 | 29.9% | 28 |
| 4 Sep 2026 | 30.0% | 28 |
| 3 Sep 2026 | 30.0% | 28 |
| 2 Sep 2026 | 30.0% | 28 |
| 1 Sep 2026 | 30.0% | 28 |
| 31 Aug 2026 | 30.0% | 28 |
| 30 Aug 2026 | 30.0% | 28 |
| 29 Aug 2026 | 30.0% | 28 |