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Allegheny Reservoir water level today
Allegheny Reservoir is at 1,320.03 ft, as of October 18, 2026.
- Past week: down 2.16 ft
- Compared with a year ago: up 20.26 ft
- 8.14 ft above the 10-year average for October 18 (1,311.89 ft)
- Lower on this date in 9 of the 11 years on record
Water level1,320.03 ftelevation, feet
vs. normal+8.14 ft10-year average for today
7-day change-2.16 ft
30-day change-9.10 ft
1-year change+20.26 ft
Past 12 months
Past 12 monthsYear before
Last 30 days
| Date | Level (ft) |
|---|---|
| Oct 18 | 1,320.03 |
| Oct 17 | 1,320.32 |
| Oct 16 | 1,320.62 |
| Oct 15 | 1,320.89 |
| Oct 14 | 1,320.97 |
| Oct 13 | 1,321.29 |
| Oct 12 | 1,321.72 |
| Oct 11 | 1,322.19 |
| Oct 10 | 1,322.80 |
| Oct 9 | 1,323.44 |
| Oct 8 | 1,323.88 |
| Oct 7 | 1,324.41 |
| Oct 6 | 1,324.91 |
| Oct 5 | 1,325.34 |
| Oct 4 | 1,325.89 |
| Oct 3 | 1,326.44 |
| Oct 2 | 1,326.89 |
| Oct 1 | 1,327.30 |
| Sep 30 | 1,327.49 |
| Sep 29 | 1,327.69 |
| Sep 28 | 1,327.85 |
| Sep 27 | 1,328.03 |
| Sep 26 | 1,328.20 |
| Sep 25 | 1,328.35 |
| Sep 24 | 1,328.54 |
| Sep 23 | 1,328.70 |
| Sep 22 | 1,328.80 |
| Sep 21 | 1,328.80 |
| Sep 20 | 1,328.92 |
| Sep 19 | 1,329.00 |
| Sep 18 | 1,329.13 |
This date in past years
| Date | Level (ft) | Today vs. then |
|---|---|---|
| October 18, 2025 | 1,299.77 | +20.26 |
| October 18, 2024 | 1,314.60 | +5.43 |
| October 18, 2023 | 1,311.83 | +8.20 |
| October 18, 2022 | 1,312.81 | +7.22 |
| October 18, 2021 | 1,322.31 | -2.28 |
| October 18, 2020 | 1,303.09 | +16.94 |
| October 18, 2019 | 1,311.02 | +9.01 |
| October 18, 2018 | 1,321.36 | -1.33 |
| October 18, 2017 | 1,313.62 | +6.41 |
| October 18, 2016 | 1,308.48 | +11.55 |
Records
Highest level on record: 1,340.49 ft (April 16, 2024). Lowest: 1,296.42 ft (October 30, 2025). Records in this series start October 1, 2015.
About these numbers
- Levels are daily mean water-surface elevations measured by the U.S. Geological Survey at this lake's gauge
- Recent readings are provisional and can be revised once USGS reviews them
- "vs. normal" compares today with the average for the same calendar date over the last 10 years of this gauge's record
- Latest reading: October 18, 2026. Official USGS page for this gauge