Blue Marsh Lake near Bernville water level

What this means

The lake level at Blue Marsh Lake near Bernville reads 289.42 ft, about where it usually sits at this time of year.

The median for mid-October is 288.65 ft, based on 7 years of readings, so the lake level is 0.77 ft above typical. On the same day last year the reading was 286.78 ft, a difference of +2.64 ft.

It is still going down, by 0.47 ft over the past 24 hours. The 30-day range is 289.40 ft – 291.39 ft.

Many reservoirs reach their low point of the year in fall, before winter rain and snow start the refill.

Compared with 7 years of daily readings for this time of year. How to read levels

Key numbers

Median for this date

288.65 ft0.77 ft above the median for this date

Normal for this date

286.50 ft – 290.26 ft8 years in 10 fall in this range (7 years of records)

Same day last year

286.78 ft+2.64 ft

Lowest and highest in 30 days

289.40 ft – 291.39 ft

Lowest and highest in 12 months

284.47 ft – 291.39 ft