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Mann Creek Reservoir water level

Reservoir, Idaho, United States

Directions

Low for mid-October

Surface elevation

2,825.72ft Up 0.07 ft over the last 7 days

Water stored
56 acre‑ft
2,825 2,830 2,835 2,840

History

2,8252,8302,8352,840ftOct 12Oct 13Oct 14Oct 15Oct 172,8252,8302,8352,840ftOct 12Oct 14Oct 17
2,8302,8402,850ftSep 19Sep 26Oct 3Oct 10Oct 172,8302,8402,850ftSep 19Oct 3Oct 17
2,8202,8402,8602,880ftOct 2025Jan 2026Apr 2026Jul 2026Oct 20262,8202,8402,8602,880ftOct 2025Apr 2026Oct 2026
2,8402,8602,880ftOct 2016Apr 2019Oct 2021Apr 2024Oct 20262,8402,8602,880ftOct 2016Oct 2021Oct 2026
2,8202,8402,8602,880ftJanMarMayJulSepNov20262,8202,8402,8602,880ftJanAprJulOct2026

202120222023202420252026

Surface elevation Normal range (10–90 %)

What this means

Water is short at Mann Creek Reservoir: the latest reading of 2,825.72 ft is below normal for mid-October.

That puts it 2.32 ft below the median of 2,828.04 ft for mid-October, based on 36 years of readings. A year ago it stood at 2,827.15 ft (−1.43 ft).

It is on the way up, by 0.07 ft over the past week. The 30-day range is 2,825.63 ft – 2,825.86 ft.

Many reservoirs are drawn down through summer and fall; most of the refill comes later, with winter rain or spring snowmelt.

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

Key numbers

Median for this date
2,828.04 ft2.32 ft below the median for this date
Normal for this date
2,825.00 ft – 2,840.32 ft8 years in 10 fall in this range (36 years of records)
Same day last year
2,827.15 ft−1.43 ft
Lowest and highest in 30 days
2,825.63 ft – 2,825.86 ft
Lowest and highest in 12 months
2,825.63 ft – 2,885.20 ft

Boating and fishing at Mann Creek Reservoir

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.

17 Sat 66° 47° – Wind 9 mph
18 Sun 66° 49° – Wind 10 mph
19 Mon 73° 48° – Wind 10 mph
20 Tue 71° 52° 0.02 in Wind 12 mph
21 Wed 61° 54° 0.17 in Wind 10 mph
22 Thu 67° 53° 0.13 in, 44% Wind 7 mph
23 Fri 65° 48° – Wind 14 mph

Forecast: Open-Meteo

Sunrise 07:07 AM Sunset 06:00 PM Daylight 10 hr, 53 min First quarter 52%

Map

Nearby gauges

Gauge Level Compared with normal 24 hours Distance
Crane Creek at Mouth near WeiserRiver gauge, Crane Creek 4.6 cfs Normal −0.6 cfs 9 mi
Weiser River near WeiserRiver gauge, Weiser River 3.81 ft Below flood stage +0.01 ft 10 mi
Snake River at WeiserRiver gauge, Snake River 3.33 ft Below flood stage ±0 11 mi
Weiser River near CambridgeRiver gauge, Weiser River 2.61 ft Below flood stage +0.01 ft 18 mi
Payette River near PayetteRiver gauge, Payette River 4.83 ft Below flood stage +0.08 ft 24 mi
Malheur River below Nevada Dam near ValeRiver gauge, Malheur River 10.86 ft Below flood stage −0.01 ft 32 mi
Snake River at NyssaRiver gauge, Snake River 7,670 cfs Very low −50.0 cfs 36 mi
Bully Creek ReservoirReservoir 2,479.48 ft Normal 36 mi

Questions and answers

How does Mann Creek Reservoir compare with last year?

It is 1.43 ft lower than on the same day last year, when the reading was 2,827.15 ft.

What is a normal level for Mann Creek Reservoir in mid-October?

The median for mid-October is 2,828.04 ft. In 8 years out of 10 the reading falls between 2,825.00 ft and 2,840.32 ft, based on 36 years of records.

Is Mann Creek Reservoir really 2,825.72 ft deep?

No. 2,825.72 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 Mann Creek Reservoir today?

On Oct 17, 2026, the surface elevation was 2,825.72 ft. Up 0.07 ft over the last 7 days.

Is Mann Creek Reservoir rising or falling?

Up 0.07 ft over the last 7 days.

Is the level of Mann Creek Reservoir 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:3663 (Agency page)
Coordinates
44.39235, -116.89539 (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 2,825.72 ft 2026-10-17 06:00 Provisional
Water stored 56 acre‑ft 2026-10-17 06:00 Provisional

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How to cite

U.S. Bureau of Reclamation: Mann Creek Reservoir (usbr:3663). Accessed October 18, 2026 via Nivelmap, https://nivelmap.com/en/united-states/idaho/mann-creek-reservoir

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