Lake levels › Idaho

Mann Lake water level today

Normal for this time of year

1,789.41ft

feet above sea level ·

vs normal for Oct 9+0.3 ft
24 hours−0.10 ft
7 days−1.0 ft
30 days−0.2 ft

Is Mann Lake low right now?

Mann Lake was at 1,789.41 ft on October 9, 2026. That is 0.34 ft above the typical level for October 9, within the normal range. Over the past week the lake has been falling about 0.15 ft a day.

Last 12 monthsDaily level Normal range (10–90% of past years)
1,7811,7871,7931,7991,805NovDecJanFebMarAprMayJunJulAugSepOct

Mann Lake on Oct 9 in past years

20251,787.5+1.9
20241,787.2+2.2
20231,789.3+0.1
20221,789.8−0.4
20211,787.2+2.2
20201,793.4−4.0

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

Daily levels, last two weeks

DateLevel (ft)Change
Oct 91,789.41−0.10
Oct 81,789.51−0.18
Oct 71,789.69−0.13
Oct 61,789.82−0.16
Oct 51,789.98−0.18
Oct 41,790.16−0.14
Oct 31,790.30−0.14
Oct 21,790.44−0.16
Oct 11,790.60−0.13
Sep 301,790.73−0.10
Sep 291,790.83+0.02
Sep 281,790.81+0.07
Sep 271,790.74+0.06
Sep 261,790.68+0.08

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

About Mann Lake

10-year range
1,779.1 ft (October 26, 2015) to 1,803.9 ft (June 13, 2022)
Operated by
U.S. Bureau of Reclamation
Data
U.S. Bureau of Reclamation — Mann Lake and Reservoir A Dam (RSA)
Datum
NAVD88

Lakes near Mann Lake

Questions

Is Mann Lake low right now?

Mann Lake was at 1,789.41 ft on October 9, 2026. That is 0.34 ft above the typical level for October 9, within the normal range. Over the past week the lake has been falling about 0.15 ft a day.

How often is the Mann Lake level updated?

The operator reports once a day, a day or two behind. 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. Bureau of Reclamation (Mann Lake and Reservoir A Dam (RSA)). Readings are provisional and can be revised.