IdahoReservoir, 7,550 acres, Fremont County
Island Park Reservoir water level
Current level
145.38ft (gage datum)
Reading from Oct 26, 2026
- Past 24 hours
- +0.12ft
- Past 7 days
- +1.56ft
- Past 30 days
- -ft
- Trend
- Rising
Island Park Reservoir was at 145.38 ft on the gage on October 26, rising 1.56 ft over the past week.
Last 30 days
Recent daily readings
| Date | Level (ft (gage datum)) | Change |
|---|---|---|
| Oct 25, 2026 | 145.26 | +0.22 |
| Oct 24, 2026 | 145.04 | +0.29 |
| Oct 23, 2026 | 144.75 | +0.28 |
| Oct 22, 2026 | 144.47 | +0.21 |
| Oct 21, 2026 | 144.26 | +0.22 |
| Oct 20, 2026 | 144.04 | +0.22 |
| Oct 19, 2026 | 143.82 | +0.22 |
| Oct 18, 2026 | 143.60 | +0.23 |
| Oct 17, 2026 | 143.37 | +0.25 |
| Oct 16, 2026 | 143.12 | +0.25 |
| Oct 15, 2026 | 142.87 | +0.19 |
Reading these numbers
This gauge reports gage height, measured against a local reference point at the station rather than sea level. The number is useful for tracking rises and drops, but it is not an elevation, so do not compare it with charts that list elevations above sea level.
On a reservoir, a few feet of drop changes the shoreline more than you would think. Low water exposes stumps, sandbars and old roadbeds that are normally well under the hull, and some ramps end before the water does.
High water brings its own problems: floating debris after storms, flooded docks and courtesy piers, and no-wake rules near flooded campgrounds. A quick look at the trend before you hitch up saves a wasted trip.
The gauge is listed by USGS as Island Park Dam near Island Park ID. Wind can pile water up at one end of a big lake for a few hours, so short spikes on a windy day are normal.
Island Park Reservoir water level questions
What is the water level at Island Park Reservoir today?
Island Park Reservoir was at 145.38 ft on the gage on October 26, rising 1.56 ft over the past week.
Is Island Park Reservoir rising or falling?
Over the last seven days the level has risen (+1.56 ft).
Where does the Island Park Reservoir water level data come from?
From the U.S. Geological Survey, gauge 13042010 (Island Park Dam near Island Park ID). USGS publishes provisional readings every 15 to 60 minutes; they can be revised later after quality checks.
How often is this page updated?
The page itself is rebuilt every day with the latest daily values, and the current reading refreshes straight from the USGS each time you open it.
Nearby lakes
If Island Park is blown out, these are the closest alternatives. Tap through for their water levels.