Blue Marsh Lake water level today
Reservoir in Pennsylvania
287.63ft
87.67 m · NAVD88
Measured · provisional
Normal for the date
What this means
It is lower than on Oct 21 in 7 of the last 10 years.
The lake has fallen 2.36 ft in 7 days and fallen 2.73 ft in 30 days.
Since 2004, the lowest daily level was 281.85 ft (Sep 2010) and the highest 308.91 ft (Sep 2011).
Blue Marsh 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 | 285.96 ft | ▼ 1.67 ft |
| Oct 21, 2024 | 286.34 ft | ▼ 1.29 ft |
| Oct 21, 2023 | 288.34 ft | ▲ 0.71 ft |
| Oct 21, 2022 | 288.41 ft | ▲ 0.78 ft |
| Oct 21, 2021 | 287.78 ft | ▲ 0.15 ft |
| Oct 21, 2020 | 287.80 ft | ▲ 0.17 ft |
| Oct 21, 2019 | 287.89 ft | ▲ 0.26 ft |
| Oct 21, 2018 | 287.66 ft | ▲ 0.03 ft |
| Oct 21, 2017 | 288.22 ft | ▲ 0.59 ft |
| Oct 21, 2016 | 284.62 ft | ▼ 3.01 ft |
Records & details
- Highest
- 308.91 ft on Sep 9, 2011
- Lowest
- 281.85 ft on Sep 27, 2010
- Records from
- 2004 (22 years of daily data)
- Storage
- 18,240 acre-ft
- Inflow
- 127 cfs (3.59 m³/s)
- Outflow
- 225 cfs (6.38 m³/s)
- Water temperature
- Not measured here
Weather & wind
This Afternoon65°F · Sunny
Wind N 10 mph
Wind N 10 mph
Tonight36°F · Mostly Clear
Wind NW 5 to 10 mph
Wind NW 5 to 10 mph
Thursday67°F · Sunny
Wind NW 5 to 15 mph
Wind NW 5 to 15 mph
Thursday Night40°F · Mostly Clear
Wind N 5 to 10 mph
Wind N 5 to 10 mph
Friday61°F · Sunny
Wind NE 5 mph
Wind NE 5 mph
Friday Night34°F · Mostly Clear then Patchy Frost
Wind 0 mph
Wind 0 mph
NOAA National Weather Service forecast for this lake's location, updated 1 h ago.