Guernsey Reservoir water level

What this means

Nothing unusual at Guernsey Reservoir right now: the lake level of 4,396.32 ft is in the normal range for mid-October.

That puts it 1.03 ft above the median of 4,395.29 ft for mid-October, based on 27 years of readings. A year ago it stood at 4,398.77 ft (−2.45 ft).

The water is rising: up 0.59 ft over the past week. Over the past 30 days it has moved between 4,393.91 ft and 4,396.32 ft.

Many reservoirs are drawn down through summer and fall; most of the refill comes later, with winter rain or spring snowmelt.

Compared with 27 years of daily readings for this time of year. How to read levels

Key numbers

Median for this date

4,395.29 ft1.03 ft above the median for this date

Normal for this date

4,387.23 ft – 4,400.59 ft8 years in 10 fall in this range (27 years of records)

Same day last year

4,398.77 ft−2.45 ft

Lowest and highest in 30 days

4,393.91 ft – 4,396.32 ft

Lowest and highest in 12 months

4,381.96 ft – 4,412.91 ft