Independent water-data site. Not a government website. Every number comes from official agency gauges.

Canyon Ferry Reservoir water level history

Daily records since 1989 · Level today: 3,784.53 ft

Highest on record
4,716.98 ft
Jul 7, 1991
Lowest on record
3,666.73 ft
May 14, 1991
Today
3,784.53 ft
Oct 21, 2026
Years of data
37
since 1989

In short

Across 27 complete years, 2021 had the lowest average level (3,783.53 ft) and 1991 the highest (3,843.76 ft).

On average the lake is lowest in April (3,782.54 ft) and highest in July (3,803.52 ft).

Canyon Ferry Reservoir level, all years

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Measured Normal range for the date (middle 50% of past years) Full pool

Lowest years

Years ranked by their lowest daily level.

Yearly highs and lows

YearAverageLowLow dateHighHigh date
2026 (292 days)3,786.513,783.07Feb 263,791.34Jul 11
20253,785.573,781.31Feb 183,793.82Jun 19
20243,788.143,783.66Nov 53,796.38Jun 22
20233,788.013,778.96Apr 113,797.19Jul 3
20223,783.913,776.77Feb 283,797.19Jul 11
20213,783.533,778.62Dec 313,790.27Jun 21
20203,787.393,780.27Apr 113,797.66Jun 24
20193,788.803,781.65Mar 223,798.16Jul 10
20183,788.043,778.18Apr 233,798.95Jun 27
20173,787.913,781.92Feb 63,796.99Jun 30
20163,787.233,778.68May 173,797.13Jun 22
20153,787.733,783.62Oct 233,796.82Jun 20
20143,787.903,778.45May 43,797.66Jul 6
20133,785.113,781.11May 143,790.26Jul 5
20123,789.323,785.73Mar 283,797.44Jun 20
20113,788.673,778.21May 223,799.72Jul 5
2010 (301 days)3,791.123,786.47Apr 173,799.28Jun 29
20093,790.563,784.48Apr 153,798.89Jun 28
20083,788.973,781.42Feb 133,798.35Jul 6
2007 (236 days)3,788.703,783.31Dec 313,796.78Jun 22
2006 (228 days)3,784.453,776.23Apr 63,796.37Jun 28
2005 (301 days)3,785.633,779.84Jan 193,798.53Jul 3
2004 (1 days)3,781.623,781.62Dec 313,781.62Dec 31
20023,787.613,780.79Mar 103,796.47Jul 9
20013,784.233,780.63Oct 173,789.48Jun 26
20003,784.563,781.20Sep 253,790.12Jun 29
19993,788.243,779.62Apr 193,796.80Jul 10
19983,791.233,785.56Apr 253,799.37Jun 30
1997 (253 days)3,791.903,769.87Apr 233,798.50Jun 21
1996 (238 days)3,788.693,778.76Apr 83,797.84Jul 9
19953,789.123,782.19Mar 193,798.82Jul 11
19943,785.283,781.43Oct 153,791.42Jun 22
19933,790.033,778.84Mar 63,797.92Jun 19
1992 (307 days)3,782.153,698.48Mar 243,786.60Jul 20
19913,843.763,666.73May 144,716.98Jul 7
19903,790.793,747.09Apr 124,066.32Jul 2
1989 (1 days)3,784.033,784.03Dec 313,784.03Dec 31

Levels in feet. Partial years show the number of days with data.

Monthly averages

MonthAverageLowestHighest
January3,785.093,777.923,791.97
February3,783.673,700.003,891.67
March3,782.613,698.483,818.84
April3,782.543,747.093,789.69
May3,784.633,666.733,793.87
June3,795.613,780.394,025.38
July3,803.523,786.004,716.98
August3,797.273,782.814,113.34
September3,790.993,780.123,928.19
October3,787.663,779.373,882.67
November3,788.033,779.473,877.15
December3,787.003,697.383,879.89

Download

Daily levels as CSV (11,953 rows; credit the original agencies listed below)