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Henrys Lake and Henrys Lake water level

Lake, Idaho, United States

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Right now

Low for mid-October

Surface elevation

12.89ft Down 0.11 ft over the last 7 days

Water stored
66,181 acre‑ft
13 14 15 16

History

History
1416ftOct 14Oct 15Oct 16Oct 17Oct 191416ftOct 14Oct 16Oct 19
121416ftSep 21Sep 28Oct 5Oct 12Oct 19121416ftSep 21Oct 5Oct 19
121416ftOct 2025Jan 2026Apr 2026Jul 2026Oct 2026121416ftOct 2025Apr 2026Oct 2026
121416ftOct 2016Apr 2019Oct 2021Apr 2024Oct 2026121416ftOct 2016Oct 2021Oct 2026
121416ftJanMarMayJulSepNov2026121416ftJanAprJulOct2026

202120222023202420252026

Surface elevation Normal range (10–90 %)

What this means

Water is short at Henrys Lake and Henrys Lake: the latest reading of 12.89 ft is below normal for mid-October.

That puts it 2.01 ft below the median of 14.90 ft for mid-October, based on 36 years of readings. A year ago it stood at 14.70 ft (−1.81 ft).

It is still going down, by 0.11 ft over the past week. With the water still dropping, the shoreline keeps moving out. The 30-day range is 12.78 ft – 13.00 ft.

Lakes and reservoirs often sit lower in fall after a summer of evaporation and use, and recover with winter rain and spring snowmelt.

Compared with 36 years of daily readings for this time of year. How to read levels

Key numbers

Median for this date
14.90 ft2.01 ft below the median for this date
Normal for this date
12.31 ft – 15.99 ft8 years in 10 fall in this range (36 years of records)
Same day last year
14.70 ft−1.81 ft
Lowest and highest in 30 days
12.78 ft – 13.00 ft
Lowest and highest in 12 months
12.65 ft – 16.67 ft

Boating and fishing at Henrys Lake and Henrys Lake

At low levels, launching can mean a long walk or a closed ramp, and shallow points stick out further than charts suggest.

Conditions at the shore change with the level, so check with the agency that runs the lake before a trip.

Weather at the gauge

No rain in the last 3 days.

19 Mon 59° 27° – Wind 12 mph
20 Tue 60° 38° – Wind 10 mph
21 Wed 58° 39° – Wind 7 mph
22 Thu 64° 40° – Wind 10 mph
23 Fri 48° 30° 1.07 in, 98% Wind 7 mph
24 Sat 42° 27° – Wind 10 mph
25 Sun 50° 29° – Wind 8 mph

Forecast: Open-Meteo

Sunrise 07:48 AM Sunset 06:34 PM Daylight 10 hr, 46 min First quarter 69%

Map

Nearby gauges

Gauge Level Compared with normal 24 hours Distance
Henrys Fork near LakeRiver gauge, Henrys Fork 0.3 cfs Very low ±0 0.3 mi
Island Park ReservoirReservoir 6,281.94 ft Low 13 mi
Henrys Fork near Island ParkRiver gauge, Henrys Fork 91.9 cfs Very low ±0 13 mi
Madison River near West YellowstoneRiver gauge, Madison River 303 cfs Very low +7.0 cfs 15 mi
Madison River below Hebgen Lake near Grayling MTRiver gauge, Madison River 707 cfs Very low ±0 19 mi
Madison River at Kirby Ranch near Cameron MTRiver gauge, Madison River 788 cfs Low ±0 23 mi
Firehole River near West Yellowstone MTRiver gauge, Firehole River 200 cfs Very low ±0 24 mi
Gibbon River at Madison Jct, YNPRiver gauge, Gibbon River 66.9 cfs Very low ±0 24 mi

Questions and answers

How does Henrys Lake and Henrys Lake compare with last year?

It is 1.81 ft lower than on the same day last year, when the reading was 14.70 ft.

What is a normal level for Henrys Lake and Henrys Lake in mid-October?

The median for mid-October is 14.90 ft. In 8 years out of 10 the reading falls between 12.31 ft and 15.99 ft, based on 36 years of records.

Is Henrys Lake and Henrys Lake really 12.89 ft deep?

No. 12.89 ft is the height of the water surface above sea level (or the agency's vertical datum), not the depth of the water.

What is the water level of Henrys Lake and Henrys Lake today?

On Oct 19, 2026, the surface elevation was 12.89 ft. Down 0.11 ft over the last 7 days.

Is Henrys Lake and Henrys Lake rising or falling?

Down 0.11 ft over the last 7 days.

Is the level of Henrys Lake and Henrys Lake normal?

Low for mid-October. Compared with 36 years of daily readings for this time of year.

How often is this data updated?

The U.S. Bureau of Reclamation publishes a new reading once a day. This page refreshes within minutes of each update.

For specialists

Station codes, datum, parameters, data quality and downloads
Operator
U.S. Bureau of Reclamation
Station code
usbr:7180 (Agency page)
Coordinates
44.59722, -111.35361 (WGS84)
Update interval
once a day
Licence
Public domain. Data: U.S. Bureau of Reclamation (RISE), provisional data subject to revision

Published series

ParameterLast valueTime (UTC)Quality
Surface elevation 12.89 ft 2026-10-19 06:00 Provisional
Water stored 66,181 acre‑ft 2026-10-19 06:00 Provisional

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How to cite

U.S. Bureau of Reclamation: Henrys Lake and Henrys Lake (usbr:7180). Accessed October 20, 2026 via Nivelmap, https://nivelmap.com/en/united-states/idaho/henrys-lake-and-henrys-lake

How we check values

Each reading is stored as published. We hold back values that jump faster than physically plausible and show the measurement time with every value.