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PennsylvaniaReservoir, 290 acres, Wayne County

Prompton Lake water level

Shoreline: USGS National Hydrography Dataset

Current level

1,124.83ft above sea level

Reading from Oct 26, 2026

Above normal for October

Past 24 hours
-0.04ft
Past 7 days
-0.40ft
Past 30 days
-0.16ft
vs typical October
+1.12ft

Prompton Lake was at 1,124.83 ft on October 26, falling 0.40 ft over the past week. That is above normal for October: the typical October level is 1,123.71 ft, so the lake is 1.12 ft above its usual mark.

Last 30 days

1124.01125.01126.0typicalSep 24Oct 9Oct 25

Shaded band shows the lowest and highest October monthly averages on record. Dashed line is the typical October level.

Typical level through the year

Each bar spans the range of monthly averages on record for that month. The line marks the median. The orange dot is where the lake sits now.

112411261128JFMAMJJASOND

Recent daily readings

Prompton Lake daily mean water level, newest first
DateLevel (ft above sea level)Change
Oct 25, 20261,124.87-0.06
Oct 24, 20261,124.93-0.04
Oct 23, 20261,124.97-0.03
Oct 22, 20261,125.00-0.06
Oct 21, 20261,125.06-0.08
Oct 20, 20261,125.14-0.09
Oct 19, 20261,125.23-0.11
Oct 18, 20261,125.34-0.06
Oct 17, 20261,125.40+0.22
Oct 16, 20261,125.18-0.32
Oct 14, 20261,125.50-0.15
Oct 13, 20261,125.65+0.37
Oct 12, 20261,125.28+1.61
Oct 11, 20261,123.67+0.06

Reading these numbers

Readings are reservoir surface elevations in feet, as published by the U.S. Geological Survey. Compare them with ramp and dock elevations from the lake operator to judge whether a launch is usable.

Reservoir levels are managed. Operators lower them ahead of flood season, hold them for summer recreation, and draw them down for dam work. When the lake falls well below its usual level, shallow points and stumps start showing up in places that are normally safe.

High water brings its own problems: floating debris after storms, flooded docks and courtesy piers, and no-wake rules near flooded campgrounds. A quick look at the trend before you hitch up saves a wasted trip.

The gauge is listed by USGS as Prompton Reservoir at Prompton, PA. Wind can pile water up at one end of a big lake for a few hours, so short spikes on a windy day are normal.

Prompton Lake water level questions

What is the water level at Prompton Lake today?

Prompton Lake was at 1,124.83 ft on October 26, falling 0.40 ft over the past week. That is above normal for October: the typical October level is 1,123.71 ft, so the lake is 1.12 ft above its usual mark.

Is Prompton Lake high or low right now?

Compared with the long-term record for October, the lake is above normal. The October monthly average has ranged from 1,123.51 to 1,126.48 ft, with a typical value of 1,123.71 ft.

Is Prompton Lake rising or falling?

Over the last seven days the level has fallen (-0.40 ft), and it is -0.16 ft compared with 30 days ago.

Where does the Prompton Lake water level data come from?

From the U.S. Geological Survey, gauge 01428900 (Prompton Reservoir at Prompton, PA). USGS publishes provisional readings every 15 to 60 minutes; they can be revised later after quality checks.

How often is this page updated?

The page itself is rebuilt every day with the latest daily values, and the current reading refreshes straight from the USGS each time you open it.

Nearby lakes

If Prompton is blown out, these are the closest alternatives. Tap through for their water levels.