Highway 75 Reservoir water level history
Daily records since 1990 · Level today: 946.72 ft
Highest on record
957.66 ft
Mar 20, 2010
Lowest on record
946.16 ft
Oct 18, 2015
Today
946.72 ft
Oct 21, 2026
Years of data
37
since 1990
In short
Across 36 complete years, 2007 had the lowest average level (947.30 ft) and 1990 the highest (952.30 ft).
On average the lake is lowest in August (949.27 ft) and highest in April (949.82 ft).
Highway 75 Reservoir level, all years
Loading chart…
Measured
Normal range for the date (middle 50% of past years)
Full pool
Lowest years
Years ranked by their lowest daily level.
- 2015
- 2020
- 2016
- 2012
- 2021
Yearly highs and lows
| Year | Average | Low | Low date | High | High date |
|---|---|---|---|---|---|
| 2026 (292 days) | 948.16 | 946.71 | Oct 21 | 949.82 | May 1 |
| 2025 | 948.99 | 947.51 | Jan 29 | 955.52 | Jun 29 |
| 2024 | 948.84 | 947.15 | Oct 28 | 952.82 | May 11 |
| 2023 | 948.56 | 947.48 | Oct 3 | 955.66 | Apr 14 |
| 2022 | 948.61 | 947.20 | Oct 14 | 953.33 | Jun 3 |
| 2021 | 948.03 | 946.68 | Aug 7 | 950.97 | Oct 13 |
| 2020 | 948.29 | 946.33 | Sep 10 | 952.30 | Mar 12 |
| 2019 | 950.52 | 947.51 | Jan 6 | 956.50 | Mar 29 |
| 2018 | 949.54 | 947.55 | Dec 18 | 955.33 | Apr 25 |
| 2017 | 950.60 | 948.21 | Jan 20 | 953.56 | Oct 6 |
| 2016 | 949.33 | 946.43 | Feb 18 | 951.50 | Dec 4 |
| 2015 | 947.45 | 946.16 | Oct 18 | 949.42 | Mar 16 |
| 2014 | 949.79 | 947.35 | Dec 31 | 957.41 | Jun 25 |
| 2013 | 950.00 | 947.92 | Feb 9 | 953.78 | Jun 25 |
| 2012 | 948.58 | 946.64 | Oct 15 | 951.29 | Jun 23 |
| 2011 | 950.10 | 948.00 | Oct 31 | 955.24 | Apr 5 |
| 2010 | 950.26 | 947.30 | Mar 22 | 957.66 | Mar 20 |
| 2009 | 950.35 | 947.90 | Oct 29 | 952.30 | Aug 31 |
| 2008 | 947.85 | 947.30 | Jan 1 | 950.00 | Oct 30 |
| 2007 | 947.30 | 947.30 | Jan 1 | 947.30 | Jan 1 |
| 2006 | 947.93 | 947.30 | Mar 11 | 952.30 | Jan 1 |
| 2005 | 951.06 | 949.00 | Jun 17 | 952.30 | Apr 6 |
| 2004 | 950.59 | 947.50 | Jul 31 | 952.30 | Jul 25 |
| 2003 | 950.80 | 949.00 | Jul 18 | 951.10 | Jun 14 |
| 2002 | 949.67 | 947.30 | Apr 16 | 951.50 | Jun 5 |
| 2001 | 949.40 | 947.30 | Apr 8 | 951.10 | Dec 22 |
| 2000 | 949.93 | 948.00 | Jul 27 | 951.50 | Jan 1 |
| 1999 | 949.54 | 947.30 | May 18 | 951.50 | Jan 15 |
| 1998 | 949.68 | 947.30 | Apr 30 | 952.00 | Oct 20 |
| 1997 | 950.30 | 947.30 | Mar 18 | 952.30 | Jan 1 |
| 1996 | 950.53 | 947.30 | Mar 16 | 952.30 | Jan 1 |
| 1995 | 949.43 | 947.30 | Mar 24 | 952.30 | Jan 1 |
| 1994 | 950.01 | 947.30 | Mar 14 | 952.30 | Jan 1 |
| 1993 | 950.66 | 947.30 | Jul 20 | 952.50 | Mar 24 |
| 1992 | 952.09 | 950.00 | Jun 19 | 952.30 | Jan 1 |
| 1991 | 951.92 | 949.30 | Jul 3 | 952.30 | Jan 1 |
| 1990 | 952.30 | 952.30 | Jan 1 | 952.30 | Jan 1 |
Levels in feet. Partial years show the number of days with data.
Monthly averages
| Month | Average | Lowest | Highest |
|---|---|---|---|
| January | 949.81 | 946.65 | 952.30 |
| February | 949.64 | 946.43 | 952.30 |
| March | 949.74 | 947.30 | 957.66 |
| April | 949.82 | 947.30 | 955.83 |
| May | 949.75 | 946.94 | 953.79 |
| June | 949.70 | 946.81 | 957.41 |
| July | 949.40 | 946.76 | 956.11 |
| August | 949.27 | 946.34 | 953.00 |
| September | 949.58 | 946.33 | 953.07 |
| October | 949.66 | 946.16 | 953.56 |
| November | 949.79 | 946.27 | 952.30 |
| December | 949.71 | 946.54 | 952.30 |
Download
Daily levels as CSV (13,433 rows; credit the original agencies listed below)