Alum Creek Lake water level today
Reservoir in Delaware, Ohio · Alum Creek of Big Walnut Crk.
887.44ft
270.49 m · NGVD29
Measured · provisional
Much above normal for the dateSteady
What this means
It is higher than on Oct 21 in every one of the last 6 years on record.
The lake has fallen 0.52 ft in 7 days and fallen 1.67 ft in 30 days.
Since 2020, the lowest daily level was 881.71 ft (Feb 2026) and the highest 892.65 ft (May 2026).
Alum Creek Lake level chart
Loading chart…
Measured
Normal range for the date (middle 50% of past years)
Same date in past years
| Date | Level | vs today |
|---|---|---|
| Oct 21, 2025 | 886.19 ft | ▼ 1.25 ft |
| Oct 21, 2024 | 885.27 ft | ▼ 2.17 ft |
| Oct 21, 2023 | 886.73 ft | ▼ 0.71 ft |
| Oct 21, 2022 | 886.92 ft | ▼ 0.52 ft |
| Oct 21, 2021 | 887.40 ft | ▼ 0.04 ft |
| Oct 21, 2020 | 886.34 ft | ▼ 1.10 ft |
Records & details
- Highest
- 892.65 ft on May 28, 2026
- Lowest
- 881.71 ft on Feb 9, 2026
- Records from
- 2020 (6 years of daily data)
- Storage
- 79,864 acre-ft
- Inflow
- 0.0 cfs (0.00 m³/s)
- Outflow
- 117 cfs (3.30 m³/s)
- Water temperature
- 66 °F (18.6 °C)
Weather & wind
This Afternoon68°F · Sunny
Wind N 6 mph
Wind N 6 mph
Tonight38°F · Mostly Clear then Patchy Fog
Wind N 5 mph
Wind N 5 mph
Thursday68°F · Patchy Fog then Mostly Sunny
Wind N 3 to 8 mph
Wind N 3 to 8 mph
Thursday Night42°F · Mostly Clear
Wind NE 2 to 7 mph
Wind NE 2 to 7 mph
Friday67°F · Mostly Sunny
Wind NE 2 to 6 mph
Wind NE 2 to 6 mph
Friday Night40°F · Mostly Clear
Wind E 6 mph
Wind E 6 mph
NOAA National Weather Service forecast for this lake's location, updated 1 h ago.