Lake levels › New Hampshire

Blackwater Lake water level today

Lower than usual for this time of year

515.42ft

feet above sea level ·

vs full pool−0.6 ft
vs normal for Oct 10−1.0 ft
24 hours−0.01 ft
7 days−0.1 ft
30 days−0.1 ft
vs a year ago−1.0 ft

Is Blackwater Lake low right now?

Blackwater Lake was at 515.42 ft on October 10, 2026, 0.58 ft below its full pool of 516.0 ft. That is 0.98 ft below the typical level for October 10 — lower than in 9 of 10 past years. Over the past week the lake has been steady.

Last 12 monthsDaily level Normal range (10–90% of past years)Full pool
513520527533540NovDecJanFebMarAprMayJunJulAugSepOct Full pool 516.0

Blackwater Lake on Oct 10 in past years

2025516.2−0.8
2024515.9−0.5
2023517.0−1.6
2022515.7−0.3
2021516.9−1.5
2020515.7−0.2

Level on the same date each year, and how today compares.

Daily levels, last two weeks

DateLevel (ft)Changevs full pool
Oct 10515.42−0.01−0.6
Oct 9515.43±0.00−0.6
Oct 8515.43±0.00−0.6
Oct 7515.43−0.02−0.6
Oct 6515.45−0.01−0.5
Oct 5515.46−0.04−0.5
Oct 2515.50−0.12−0.5
Oct 1515.62−0.22−0.4
Sep 30515.84+0.28−0.2
Sep 29515.56−0.02−0.4
Sep 28515.58+0.07−0.4
Sep 27515.51+0.04−0.5
Sep 26515.47+0.01−0.5
Sep 25515.46±0.00−0.5

Daily means of the operator's readings (midnight to midnight, local time).

About Blackwater Lake

Full pool
516.0 ft (Top of Normal)
10-year range
514.7 ft (September 15, 2025) to 546.2 ft (May 12, 2025)
Operated by
U.S. Army Corps of Engineers
Data
U.S. Army Corps of Engineers — NAE district, BWD

Lakes near Blackwater Lake

Questions

Is Blackwater Lake low right now?

Blackwater Lake was at 515.42 ft on October 10, 2026, 0.58 ft below its full pool of 516.0 ft. That is 0.98 ft below the typical level for October 10 — lower than in 9 of 10 past years. Over the past week the lake has been steady.

What is full pool for Blackwater Lake?

Full pool (Top of Normal) is 516.0 ft above sea level, per U.S. Army Corps of Engineers. Levels above it mean the operator is storing flood water; levels below it are normal in late summer and winter drawdowns.

How often is the Blackwater Lake level updated?

The operator reports every 15 minutes to an hour. This page refreshes several times a day; the time of the latest reading is shown next to the level.

Where does this data come from?

U.S. Army Corps of Engineers (NAE district, BWD). Readings are provisional and can be revised.