Mann Lake

Name: Mann Lake (Idaho) water level
Creator: U.S. Bureau of Reclamation

Idaho · Reclamation gauge

Grey bar: 12-month range 1,787.2–1,803.7 ft.

Water level · NAVD88

1,788.12FT

Storage 844 acre-feet

The source publishes no % full figure.

7 days −0.54 ft30 days −2.42 ft

Reading for Oct 24, 2026 · page refreshed Oct 25, 21:05 UTC
Source: U.S. Bureau of Reclamation (RISE)

Worth going today?This Afternoon

Looks good

Light wind, dry

Wind3 to 8 mph

Rain0%

Temp64°F

Level1,788.1 ft

This AfternoonMostly Sunny · 64°F
E 3 to 8 mph · rain 0%

TonightMostly Cloudy then Slight Chance Rain Showers · 38°F
E 2 to 7 mph · rain 15%

NWS forecast for the gauge location. Good = wind ≤ 10 mph and rain ≤ 30%; storms are flagged. Not safety advice – check local conditions, closures and warnings.

Level history

30 days1 year

Field notes

On Oct 24, 2026, Mann Lake was at 1,788.12 (NAVD88) ft.

Reclamation reports storage of 844 acre-feet for the same day.

Over the past 7 days the lake has been falling (−0.54 ft), and it is −2.42 ft over 30 days.

Readings come from the Bureau of Reclamation's daily reservoir data for Mann Lake and Reservoir A Dam (RSA).

Lake facts

Storage (latest)	844 acre-feet
Gauge / station	Mann Lake and Reservoir A Dam (RSA)
Elevation datum	ft (NAVD88)
Gauge location	46.3711, -116.8575

Nearby lakes

Lake Waha11 mi S3,366.60 ft−0.02 ft Soldiers Meadow Reservoir15 mi S4,495.57 ft−0.65 ft Bennington Lake70 mi W · WA1,194.86 ft−0.33 ft Thief Valley Reservoir104 mi SW · OR3,096.44 ft±0.00 ft Scooteney Reservoir105 mi W · WA911.89 ft−4.53 ft

Common questions

Is Mann Lake rising or falling?

Over the last 7 days it changed −0.54 ft and over 30 days −2.42 ft.

How full is Mann Lake?

Reclamation publishes the water surface elevation for this gauge but not a percent-full figure, so we don't show one rather than estimate it.

How often is this page updated?

The page is rebuilt automatically every day from Reclamation's published data. Values can be revised later by the source agency.

Where does the data come from?

The U.S. Bureau of Reclamation's RISE data portal (data.usbr.gov). Forecasts come from the National Weather Service.

Daily values published by the Bureau of Reclamation. Reclamation data are provisional and subject to revision unless otherwise noted. This page is not affiliated with or endorsed by the Bureau of Reclamation. See data sources.