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By Year
| Year | Usage in Gallons | Usage in Acre feet |
|---|
| 2023 | 514,780,000 | 1,580 |
|---|
| 2022 | 571,233,000 | 1,753 |
|---|
| 2021 | 544,920,000 | 1,672 |
|---|
| 2020 | 595,590,000 | 1,828 |
|---|
| 2019 | 570,031,000 | 1,749 |
|---|
| 2018 | 558,287,000 | 1,713 |
|---|
| 2017 | 503,499,000 | 1,545 |
|---|
| 2016 | 531,958,000 | 1,633 |
|---|
| 2015 | 522,732,000 | 1,604 |
|---|
| 2014 | 525,787,000 | 1,614 |
|---|
| 2013 | 498,228,000 | 1,529 |
|---|
| 2012 | 598,960,000 | 1,838 |
|---|
| 2011 | 537,792,000 | 1,650 |
|---|
| 2010 | 562,681,000 | 1,727 |
|---|
| 2009 | 527,006,000 | 1,617 |
|---|
| 2008 | 616,854,000 | 1,893 |
|---|
| 2007 | 608,719,000 | 1,868 |
|---|
| 2006 | 665,231,000 | 2,042 |
|---|
| 2005 | 642,236,000 | 1,971 |
|---|
| 2004 | 595,130,000 | 1,826 |
|---|
| 2003 | 634,192,000 | 1,946 |
|---|
| 2002 | 766,610,000 | 2,353 |
|---|
| 2001 | 747,911,000 | 2,295 |
|---|
| 2000 | 796,885,000 | 2,446 |
|---|
| 1999 | 729,237,000 | 2,238 |
|---|
| 1998 | 752,701,000 | 2,310 |
|---|
| 1997 | 714,063,000 | 2,191 |
|---|
| 1996 | 746,889,000 | 2,292 |
|---|
| 1995 | 656,145,000 | 2,014 |
|---|
| 1994 | 740,668,000 | 2,273 |
|---|
| 1993 | 674,975,000 | 2,071 |
|---|
| 1992 | 652,712,000 | 2,003 |
|---|
| 1991 | 614,633,000 | 1,886 |
|---|
By Month on a 10-year average
| Months | Usage in Gallons |
|---|
| January | 31,723,000 |
|---|
| February | 32,997,000 |
|---|
| March | 30,023,000 |
|---|
| April | 32,066,000 |
|---|
| May | 34,280,000 |
|---|
| June | 48,793,000 |
|---|
| July | 61,485,000 |
|---|
| August | 68,254,000 |
|---|
| September | 68,897,000 |
|---|
| October | 55,334,000 |
|---|
| November | 40,974,000 |
|---|
| December | 34,490,000 |
|---|
