Reservoir · Wyoming · United States · BOR RISE
Jackson Lake and Jackson Lake Dam (JCK)
59.9% full
Capacity
1,044.76 hm³
Volume stored
626 hm³
Coordinates
43.858°N, 110.590°W
Last updated
2026-07-28
Current fill
59.9%vs 7 days ago
-1.0%losing
vs 1 year ago
-36.1%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: 2026-07-28.
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. 43.858, -110.590 · Open in Google Maps
About Jackson Lake and Jackson Lake Dam (JCK)
As of July 28, 2026, Jackson Lake and Jackson Lake Dam (JCK) is filled to 59.9% of its total capacity, holding roughly 626 hm³ of water out of a maximum 1,045 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 (-1.0 pts), and it is 36.1 points below its level on the same date a year earlier.
Across the readings we hold for Jackson Lake and Jackson Lake Dam (JCK) — 2190 data points between July 31, 2021 and July 28, 2026 — the level has ranged from a low of 15.0% (October 4, 2021) to a high of 99.8% (June 17, 2024). 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 Wyoming basin at 43.858°N, 110.590°W.
Key facts
- Current fill level
- 59.9%
- Water stored
- 626 hm³
- Total capacity
- 1,045 hm³
- 7-day change
- ▼ 1.0 pts
- Year-on-year
- ▼ 36.1 pts
- Primary use
- Multipurpose
- River basin
- Wyoming
- Operator
- BOR
- Coordinates
- 43.858°N, 110.590°W
- Last updated
- July 28, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 28 Jul 2026 | 59.9% | 626 |
| 27 Jul 2026 | 60.9% | 636 |
| 26 Jul 2026 | 61.4% | 642 |
| 25 Jul 2026 | 62.4% | 652 |
| 24 Jul 2026 | 63.4% | 662 |
| 23 Jul 2026 | 64.3% | 671 |
| 22 Jul 2026 | 65.1% | 680 |
| 21 Jul 2026 | 66.0% | 690 |
| 20 Jul 2026 | 67.1% | 701 |
| 19 Jul 2026 | 68.0% | 710 |
| 18 Jul 2026 | 68.8% | 719 |
| 17 Jul 2026 | 69.8% | 729 |
Frequently asked questions
What is the current water level of Jackson Lake and Jackson Lake Dam (JCK)?
As of July 28, 2026, Jackson Lake and Jackson Lake Dam (JCK) is at 59.9% of its capacity, holding approximately 626 hm³ of water, according to BOR RISE (US Bureau of Reclamation) data.
Is Jackson Lake and Jackson Lake Dam (JCK) reservoir full?
No. As of July 28, 2026, Jackson Lake and Jackson Lake Dam (JCK) is within its normal operating range at 59.9% of its capacity, so it is not full.
Is the water level at Jackson Lake and Jackson Lake Dam (JCK) rising or falling?
The level at Jackson Lake and Jackson Lake Dam (JCK) has been broadly stable over the latest week on record (-1.0 points).
How much water can Jackson Lake and Jackson Lake Dam (JCK) hold?
Jackson Lake and Jackson Lake Dam (JCK) has a total capacity of 1,045 hm³.
Where is Jackson Lake and Jackson Lake Dam (JCK) reservoir located?
Jackson Lake and Jackson Lake Dam (JCK) is located in Wyoming, United States, within the Wyoming basin (coordinates 43.858°N, 110.590°W).
What is Jackson Lake and Jackson Lake Dam (JCK) used for?
Jackson Lake and Jackson Lake Dam (JCK) is used primarily for multiple purposes, and is managed by BOR.