IndianaReservoir, 1,864 acres, Indianapolis
Geist Reservoir water level
Current level
784.46ft NAVD88
Reading from Oct 26, 2026
- Past 24 hours
- 0.00ft
- Past 7 days
- -0.02ft
- Past 30 days
- -0.02ft
- Trend
- Steady
Geist Reservoir was at 784.46 ft on October 26, holding steady over the past week (-0.02 ft).
Last 30 days
Recent daily readings
| Date | Level (ft NAVD88) | Change |
|---|---|---|
| Oct 25, 2026 | 784.46 | 0.00 |
| Oct 24, 2026 | 784.46 | 0.00 |
| Oct 23, 2026 | 784.46 | -0.01 |
| Oct 22, 2026 | 784.47 | 0.00 |
| Oct 21, 2026 | 784.47 | -0.01 |
| Oct 20, 2026 | 784.48 | 0.00 |
| Oct 19, 2026 | 784.48 | -0.01 |
| Oct 18, 2026 | 784.49 | 0.00 |
| Oct 17, 2026 | 784.49 | +0.03 |
| Oct 16, 2026 | 784.46 | +0.02 |
| Oct 15, 2026 | 784.44 | -0.01 |
| Oct 14, 2026 | 784.45 | 0.00 |
| Oct 13, 2026 | 784.45 | -0.01 |
| Oct 12, 2026 | 784.46 | 0.00 |
Reading these numbers
Readings are elevations in feet above the North American Vertical Datum of 1988 (NAVD88), the current national reference. Older dam documents often quote NGVD29 instead, which can differ by a few feet. See NGVD29 vs NAVD88.
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 about 2 miles from the center of the lake and is listed by USGS as Geist Reservoir at Indianapolis, IN. 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.
Geist Reservoir water level questions
What is the water level at Geist Reservoir today?
Geist Reservoir was at 784.46 ft on October 26, holding steady over the past week (-0.02 ft).
Is Geist Reservoir rising or falling?
Over the last seven days the level has held roughly steady (-0.02 ft), and it is -0.02 ft compared with 30 days ago.
Where does the Geist Reservoir water level data come from?
From the U.S. Geological Survey, gauge 03351700 (Geist Reservoir at Indianapolis, IN). 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 Geist is blown out, these are the closest alternatives. Tap through for their water levels.