All rankings
California · California (CIWQS)
Inland Empire Utilities Agency
C
Often reaches water
Reported events
32
Total volume
610K gal
Reached waterways
5 (16%)
Reporting since
2006
What caused the overflows
Equipment Failure
17
Other / Unknown
14
Root Intrusion
1
Reported overflow events (showing 32 of 32)
| Date | Volume | Cause | Reached water | Receiving water |
|---|---|---|---|---|
| Jun 15, 2026 | 4K gal | Other / Unknown | — | — |
| Jan 7, 2026 | 5K gal | Equipment Failure | — | — |
| Dec 5, 2025 | 2K gal | Equipment Failure | — | — |
| Nov 22, 2025 | 21K gal | Equipment Failure | — | — |
| Feb 22, 2024 | 4K gal | Equipment Failure | — | — |
| Feb 21, 2024 | 72K gal | Equipment Failure | — | — |
| Nov 7, 2023 | 546 gal | Equipment Failure | — | — |
| Jul 19, 2022 | 7K gal | Equipment Failure | — | Street/Curb and Gutter |
| Jul 6, 2022 | 3K gal | Equipment Failure | — | Other (specify below) |
| Oct 23, 2021 | 85 gal | Equipment Failure | — | Other (specify below) |
| Jul 19, 2020 | 42K gal | Equipment Failure | — | Other (specify below);Paved Surface |
| Nov 25, 2019 | 37K gal | Other / Unknown | Yes | Surface Water |
| May 17, 2019 | 600 gal | Equipment Failure | — | Unpaved surface |
| Apr 11, 2019 | 13K gal | Other / Unknown | — | Unpaved surface |
| Mar 10, 2019 | 67K gal | Equipment Failure | — | Unpaved surface |
| Feb 15, 2018 | 140K gal | Equipment Failure | — | Other (specify below);Unpaved surface |
| Aug 1, 2016 | 3K gal | Equipment Failure | — | Other (specify below);Paved Surface;Separate Storm Drain |
| May 6, 2015 | 823 gal | Equipment Failure | — | Street/Curb and Gutter |
| Mar 18, 2015 | 10K gal | Other / Unknown | — | Other (specify below) |
| Aug 31, 2013 | 19 gal | Other / Unknown | — | Other (specify below) |
| Jul 21, 2013 | 3 gal | Other / Unknown | — | Other (specify below) |
| May 8, 2012 | 6 gal | Equipment Failure | — | Other (specify below) |
| Apr 3, 2012 | 81K gal | Other / Unknown | Yes | Other paved surface;Unpaved surface;Other (specify below) |
| Jul 25, 2011 | 6K gal | Equipment Failure | — | Unpaved surface;Other (specify below) |
| Jul 15, 2009 | 3K gal | Other / Unknown | Yes | Storm drain;Street/curb and gutter;Surface water;Unpaved surface |
| Jun 6, 2009 | 2K gal | Other / Unknown | — | Separate storm drain;Street/curb and gutter |
| Dec 11, 2007 | 500 gal | Root Intrusion | — | Unpaved surface |
| Nov 7, 2007 | 48K gal | Other / Unknown | Yes | Surface water;Other (specify below) |
| Sep 9, 2007 | 10K gal | Other / Unknown | — | Other paved surface;Unpaved surface |
| May 2, 2007 | 2K gal | Other / Unknown | Yes | Surface water;Unpaved surface;Other (specify below) |
| Mar 6, 2007 | 75 gal | Other / Unknown | — | Unpaved surface |
| May 1, 2006 | 29K gal | Other / Unknown | — | Other (specify below) |
Source: California (CIWQS). Volumes are utility-reported estimates. Some events lack precise coordinates or volumes.