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Lake Lowell and Deer Flat Dams water level

Lake, Idaho, United States

Directions

High for mid-October

Surface elevation

2,525.64ft Down 0.11 ft over the last 7 days

Water stored
112,638 acre‑ft
2,515 2,520 2,525

History

2,5152,5202,525ftOct 13Oct 14Oct 15Oct 16Oct 182,5152,5202,525ftOct 13Oct 15Oct 18
2,5152,5202,525ftSep 20Sep 27Oct 4Oct 11Oct 182,5152,5202,525ftSep 20Oct 4Oct 18
2,5202,530ftOct 2025Jan 2026Apr 2026Jul 2026Oct 20262,5202,530ftOct 2025Apr 2026Oct 2026
2,5202,5252,530ftOct 2016Apr 2019Oct 2021Apr 2024Oct 20262,5202,5252,530ftOct 2016Oct 2021Oct 2026
2,5202,530ftJanMarMayJulSepNov20262,5202,530ftJanAprJulOct2026

202120222023202420252026

Surface elevation Normal range (10–90 %)

What this means

At 2,525.64 ft, Lake Lowell and Deer Flat Dams is holding more water than usual for mid-October.

The median for mid-October is 2,523.79 ft, based on 36 years of readings, so the lake level is 1.85 ft above typical. On the same day last year the reading was 2,525.84 ft, a difference of −0.20 ft.

It is still going down, by 0.11 ft over the past week. The 30-day range is 2,525.64 ft – 2,525.84 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
2,523.79 ft1.85 ft above the median for this date
Normal for this date
2,512.10 ft – 2,526.33 ft8 years in 10 fall in this range (36 years of records)
Same day last year
2,525.84 ft−0.20 ft
Lowest and highest in 30 days
2,525.64 ft – 2,525.84 ft
Lowest and highest in 12 months
2,524.31 ft – 2,528.72 ft

Boating and fishing at Lake Lowell and Deer Flat Dams

Slightly high water rarely causes problems on the water itself, though some low-lying shoreline spots may be wet.

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 76° 47° – Wind 13 mph
20 Tue 72° 46° – Wind 7 mph
21 Wed 77° 54° 0.01 in Wind 15 mph
22 Thu 74° 53° 0.17 in, 73% Wind 15 mph
23 Fri 58° 42° – Wind 24 mph
24 Sat 57° 37° – Wind 8 mph
25 Sun 65° 40° – Wind 9 mph

Forecast: Open-Meteo

Sunrise 07:07 AM Sunset 05:58 PM Daylight 10 hr, 52 min First quarter 61%

Map

Nearby gauges

Gauge Level Compared with normal 24 hours Distance
Boise River at CaldwellRiver gauge, Boise River 513 cfs Normal +73.0 cfs 7 mi
Mason Creek at CaldwellRiver gauge, Mason Creek 56.5 cfs Normal −0.6 cfs 8 mi
West Hartley Gulch near CaldwellRiver gauge, West Hartley Gulch 9.7 cfs Normal −0.5 cfs 8 mi
East Hartley above Backwater near CaldwellRiver gauge, East Hartley 21.9 cfs Normal −1.6 cfs 9 mi
South Middleton Drain at MiddletonRiver gauge, South Middleton Drain 39.4 cfs Normal −1.5 cfs 10 mi
North Middleton Drain Mill Slough at MiddletonRiver gauge, North Middleton Drain Mill Slough 25.3 cfs Normal −0.5 cfs 10 mi
Conway Gulch below 1st St at NotusRiver gauge, Conway Gulch 17.8 cfs Normal −0.1 cfs 11 mi
Dixie Drain near WilderRiver gauge, Dixie Drain 150 cfs Normal −5.0 cfs 13 mi

Questions and answers

Is Lake Lowell and Deer Flat Dams higher than last year?

No, it is 0.20 ft lower than on the same day last year, when the reading was 2,525.84 ft.

What is a normal level for Lake Lowell and Deer Flat Dams in mid-October?

The median for mid-October is 2,523.79 ft. In 8 years out of 10 the reading falls between 2,512.10 ft and 2,526.33 ft, based on 36 years of records.

Is Lake Lowell and Deer Flat Dams really 2,525.64 ft deep?

No. 2,525.64 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 Lake Lowell and Deer Flat Dams today?

On Oct 18, 2026, the surface elevation was 2,525.64 ft. Down 0.11 ft over the last 7 days.

Is Lake Lowell and Deer Flat Dams rising or falling?

Down 0.11 ft over the last 7 days.

Is the level of Lake Lowell and Deer Flat Dams normal?

High 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:7188 (Agency page)
Coordinates
43.58333, -116.73333 (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 2,525.64 ft 2026-10-18 06:00 Provisional
Water stored 112,638 acre‑ft 2026-10-18 06:00 Provisional

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How to cite

U.S. Bureau of Reclamation: Lake Lowell and Deer Flat Dams (usbr:7188). Accessed October 19, 2026 via Nivelmap, https://nivelmap.com/en/united-states/idaho/lake-lowell-and-deer-flat-dams

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.

Readings are provisional, can be delayed or wrong and are not a flood warning. Read the disclaimer