Tappan Lake water level today
Reservoir in Harrison, Ohio · Little Stillwater Creek
899.12ft
274.05 m · NGVD29
Measured · provisional
Above normal for the dateSteady
What this means
Tappan Lake is 34,181.88 ft below its full pool of 35,081.00 ft.
It is lower than on Oct 21 in 2 of the last 9 years.
The lake has fallen 0.02 ft in 7 days and fallen 0.25 ft in 30 days.
Since 2017, the lowest daily level was 891.21 ft (Jan 2018) and the highest 903.62 ft (Apr 2024).
Tappan Lake level chart
Loading chart…
Measured
Normal range for the date (middle 50% of past years)
Full pool
Same date in past years
| Date | Level | vs today |
|---|---|---|
| Oct 21, 2025 | 898.49 ft | ▼ 0.63 ft |
| Oct 21, 2024 | 897.61 ft | ▼ 1.51 ft |
| Oct 21, 2023 | 898.62 ft | ▼ 0.50 ft |
| Oct 21, 2022 | 899.07 ft | ▼ 0.05 ft |
| Oct 21, 2021 | 899.33 ft | ▲ 0.21 ft |
| Oct 21, 2020 | 897.77 ft | ▼ 1.35 ft |
| Oct 21, 2019 | 899.04 ft | ▼ 0.08 ft |
| Oct 21, 2018 | 899.27 ft | ▲ 0.15 ft |
| Oct 21, 2017 | 898.98 ft | ▼ 0.14 ft |
Records & details
- Highest
- 903.62 ft on Apr 7, 2024
- Lowest
- 891.21 ft on Jan 4, 2018
- Records from
- 2017 (9 years of daily data)
- Full pool
- 35,081.00 ft (top of conservation pool, U.S. Army Corps of Engineers)
- Storage
- 34,688 acre-ft
- Inflow
- 7.8 cfs (0.22 m³/s)
- Outflow
- 7.8 cfs (0.22 m³/s)
- Water temperature
- Not measured here