Glendale Lake Water Level
Pennsylvania · updated daily from the U.S. Geological Survey
1427.91 ft
Glendale Lake is high for this time of year and steady (-0.12 ft in the last 7 days).
Change since yesterday: -0.08 ft
Reading as of 2026-08-14 · higher than 92% of August readings on record
Where Glendale Lake sits historically
Today's level compared with every reading in our 5.0-year record for this lake.
Since yesterday
-0.08 ft
7-day change
-0.12 ft
30-day change
+0.19 ft
1-year change
+0.91 ft
Last 30 days
Last 12 months
Full history (5.0 years)
Glendale Lake records and averages
| Current level | 1427.91 ft |
|---|---|
| Record high | 1430.96 ft (2024-04-04) |
| Record low | 1424.09 ft (2025-11-24) |
| Average of all readings | 1427.39 ft |
| Data span | 5.0 years (1,791 readings) |
Frequently asked questions
Is Glendale Lake full right now?
As of 2026-08-14, Glendale Lake sits at 1427.91 ft, which is high for this time of year.Over the past 30 days the level has risen 0.19 ft.
What is the water level at Glendale Lake today?
The most recent reading is 1427.91 ft (2026-08-14), sourced from the U.S. Geological Survey. Readings on this page refresh automatically as the agency publishes new data.
What is the highest Glendale Lake has ever been?
The highest level in our records is 1430.96 ft on 2024-04-04. The lowest is 1424.09 ft on 2025-11-24. Our record covers about 5.0 years of readings.
Is Glendale Lake low for this time of year?
Compared with every August in our records, the current level is higher than 92% of them — high for this time of year. Seasonal comparison matters more than the raw number, because most reservoirs draw down predictably through late summer and refill over winter and spring.
Why is Glendale Lake changing right now?
Reservoir levels move for four main reasons: rainfall and runoff into the basin, releases through the dam for downstream water supply, power generation or flood control, evaporation during hot months, and seasonal drawdown schedules set by the operating agency. Glendale Lake has risen 0.19 ft over the past 30 days. For the operational reason on any given week, check the U.S. Geological Survey directly.
How much has Glendale Lake changed over the past year?
The level is +0.91 ft compared with this date last year (1427.91 ft today). The full-history chart above covers 5.0 years, with a record high of 1430.96 ft and a record low of 1424.09 ft.
Nearby lakes in Pennsylvania
Source: the U.S. Geological Survey. Readings are provisional and subject to revision by the publishing agency. All Pennsylvania lake levels.