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Black Canyon Reservoir water level

Reservoir, Idaho, United States

Directions

Low for mid-October

Surface elevation

2,491.37ft Down 3.80 ft over the last 7 days

Water stored
24,329 acre‑ft
2,490 2,493 2,495 2,498

History

2,4922,4942,4962,498ftOct 13Oct 14Oct 15Oct 16Oct 172,4922,4942,4962,498ftOct 13Oct 15Oct 17
2,4922,4942,4962,498ftSep 20Sep 26Oct 3Oct 10Oct 172,4922,4942,4962,498ftSep 20Oct 3Oct 17
2,4702,4802,4902,500ftOct 2025Jan 2026Apr 2026Jul 2026Oct 20262,4702,4802,4902,500ftOct 2025Apr 2026Oct 2026
2,4602,4802,500ftOct 2016Apr 2019Oct 2021Apr 2024Oct 20262,4602,4802,500ftOct 2016Oct 2021Oct 2026
2,4602,4802,500ftJanMarMayJulSepNov20262,4602,4802,500ftJanAprJulOct2026

202120222023202420252026

Surface elevation Normal range (10–90 %)

What this means

Water is short at Black Canyon Reservoir: the latest reading of 2,491.37 ft is below normal for mid-October.

The median for mid-October is 2,494.61 ft, based on 36 years of readings, so the lake level is 3.24 ft below typical. On the same day last year the reading was 2,490.52 ft, a difference of +0.85 ft.

It is still going down, by 3.80 ft over the past week. With the water still dropping, the shoreline keeps moving out. The 30-day range is 2,491.37 ft – 2,497.14 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
2,494.61 ft3.24 ft below the median for this date
Normal for this date
2,490.40 ft – 2,497.75 ft8 years in 10 fall in this range (36 years of records)
Same day last year
2,490.52 ft+0.85 ft
Lowest and highest in 30 days
2,491.37 ft – 2,497.14 ft
Lowest and highest in 12 months
2,467.13 ft – 2,497.88 ft

Boating and fishing at Black Canyon 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.

18 Sun 70° 46° – Wind 8 mph
19 Mon 77° 54° – Wind 10 mph
20 Tue 74° 54° 0.00 in Wind 9 mph
21 Wed 77° 54° 0.02 in, 30% Wind 9 mph
22 Thu 70° 54° 0.09 in, 77% Wind 13 mph
23 Fri 57° 41° – Wind 18 mph
24 Sat 59° 36° – Wind 5 mph

Forecast: Open-Meteo

Sunrise 07:06 AM Sunset 05:57 PM Daylight 10 hr, 51 min First quarter 58%

Map

Nearby gauges

Gauge Level Compared with normal 24 hours Distance
Payette River near EmmettRiver gauge, Payette River 2.14 ft Below flood stage +0.65 ft 0.3 mi
Payette River near LethaRiver gauge, Payette River 312 cfs Very low −325.0 cfs 10 mi
Payette River near Horseshoe BendRiver gauge, Payette River 803 cfs Low ±0 12 mi
Eagle Drain at EagleCanal gauge, Eagle Drain 12.7 cfs Normal −0.6 cfs 17 mi
North Middleton Drain Mill Slough at MiddletonRiver gauge, North Middleton Drain Mill Slough 25.8 cfs Normal +1.0 cfs 18 mi
Boise River South Channel at EagleRiver gauge, Boise River South Channel 201 cfs Low −5.0 cfs 18 mi
South Middleton Drain at MiddletonRiver gauge, South Middleton Drain 42.4 cfs Normal −1.4 cfs 18 mi
East Hartley above Backwater near CaldwellRiver gauge, East Hartley 23.2 cfs Normal −1.0 cfs 20 mi

Questions and answers

Is Black Canyon Reservoir higher than last year?

Yes, it is 0.85 ft higher than on the same day last year, when the reading was 2,490.52 ft.

What is a normal level for Black Canyon Reservoir in mid-October?

The median for mid-October is 2,494.61 ft. In 8 years out of 10 the reading falls between 2,490.40 ft and 2,497.75 ft, based on 36 years of records.

Is Black Canyon Reservoir really 2,491.37 ft deep?

No. 2,491.37 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 Black Canyon Reservoir today?

On Oct 17, 2026, the surface elevation was 2,491.37 ft. Down 3.80 ft over the last 7 days.

Is Black Canyon Reservoir rising or falling?

Down 3.80 ft over the last 7 days.

Is the level of Black Canyon 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:7175 (Agency page)
Coordinates
43.93050, -116.43710 (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 2,491.37 ft 2026-10-17 06:00 Provisional
Water stored 24,329 acre‑ft 2026-10-17 06:00 Provisional

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How to cite

U.S. Bureau of Reclamation: Black Canyon Reservoir (usbr:7175). Accessed October 19, 2026 via Nivelmap, https://nivelmap.com/en/united-states/idaho/black-canyon-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