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California · California (CIWQS)
Coronado City
C
Often reaches water
Reported events
86
Total volume
25.9M gal
Reached waterways
25 (29%)
Reporting since
2007
What caused the overflows
Other / Unknown
33
Equipment Failure
26
Root Intrusion
13
Grease / FOG
9
Rainfall / Flooding
3
Capacity Issue
2
Reported overflow events (showing 86 of 86)
| Date | Volume | Cause | Reached water | Receiving water |
|---|---|---|---|---|
| May 4, 2026 | 75 gal | Other / Unknown | — | — |
| Mar 6, 2026 | 579 gal | Other / Unknown | — | — |
| Oct 20, 2025 | 4K gal | Other / Unknown | Yes | Pacific Ocean |
| Oct 20, 2025 | 7K gal | Other / Unknown | Yes | Pacific Ocean |
| Jul 1, 2025 | 1K gal | Other / Unknown | Yes | San Diego Bay |
| Feb 7, 2024 | 15K gal | Capacity Issue | Yes | San Diego Bay and Embarcadero Marina |
| Feb 7, 2024 | 38K gal | Rainfall / Flooding | Yes | San Diego Bay and Embarcadero Marina |
| Feb 7, 2024 | 38K gal | Capacity Issue | Yes | San Diego Bay and Embarcadero Marina |
| Feb 6, 2024 | 171K gal | Other / Unknown | Yes | San Diego Bay and Embarcadero Marina |
| Feb 6, 2024 | 589K gal | Other / Unknown | Yes | San Diego Bay and Embarcadero Marina |
| Feb 6, 2024 | 589K gal | Equipment Failure | Yes | San Diego Bay and Embarcadero Marina |
| Feb 6, 2024 | 171K gal | Other / Unknown | Yes | San Diego Bay and Embarcadero Marina |
| Jan 22, 2024 | 1.2M gal | Other / Unknown | Yes | San Diego Bay and Embarcadero Marina |
| Jan 22, 2024 | 4.3M gal | Rainfall / Flooding | Yes | Pacific Ocean |
| Jan 22, 2024 | 147K gal | Rainfall / Flooding | Yes | Pacific Ocean |
| Jan 22, 2024 | 381K gal | Other / Unknown | Yes | San Diego Bay and Embarcadero Marina |
| Jan 22, 2024 | 10.5M gal | Other / Unknown | Yes | Pacific Ocean |
| Jan 22, 2024 | 7.8M gal | Other / Unknown | Yes | San Diego Bay and Embarcadero Marina |
| May 1, 2023 | 10 gal | Equipment Failure | — | Paved Surface |
| Oct 17, 2020 | 19 gal | Equipment Failure | — | Paved Surface;Street/Curb and Gutter |
| Jul 4, 2020 | 300 gal | Equipment Failure | — | Street/Curb and Gutter |
| Jun 18, 2020 | 30 gal | Root Intrusion | — | Street/Curb and Gutter |
| Mar 1, 2018 | 850 gal | Root Intrusion | Yes | Surface Water |
| Sep 11, 2016 | 3K gal | Root Intrusion | — | Other (specify below);Paved Surface;Separate Storm Drain;Street/Curb and Gutter |
| Aug 23, 2016 | 4K gal | Other / Unknown | Yes | Paved Surface;Surface Water |
| Jun 27, 2016 | 150 gal | Equipment Failure | — | Other (specify below) |
| Nov 17, 2015 | 6K gal | Other / Unknown | — | Combined Storm Drain (Combined CS only) |
| Sep 17, 2015 | 90 gal | Root Intrusion | Yes | Separate Storm Drain;Street/Curb and Gutter;Surface Water |
| Sep 14, 2015 | 41 gal | Root Intrusion | — | Street/Curb and Gutter |
| Aug 27, 2015 | 50 gal | Equipment Failure | — | Paved Surface |
| Aug 11, 2015 | 10 gal | Equipment Failure | — | Paved Surface |
| Aug 11, 2015 | 30 gal | Equipment Failure | — | Paved Surface |
| Mar 18, 2015 | 50 gal | Equipment Failure | — | Paved Surface;Separate Storm Drain |
| Aug 8, 2014 | 200 gal | Other / Unknown | Yes | Paved Surface |
| Jul 23, 2014 | 17 gal | Equipment Failure | — | Other (specify below) |
| Jul 21, 2014 | 12 gal | Equipment Failure | — | Other (specify below) |
| Jun 30, 2014 | 25 gal | Equipment Failure | — | Street/Curb and Gutter |
| May 6, 2014 | 5 gal | Root Intrusion | — | Other (specify below) |
| May 5, 2014 | 4 gal | Root Intrusion | — | Other (specify below) |
| Feb 8, 2014 | 30 gal | Equipment Failure | — | Other (specify below) |
| Dec 12, 2013 | 30 gal | Equipment Failure | — | Other (specify below) |
| Dec 8, 2013 | 300 gal | Grease / FOG | — | Other (specify below) |
| Apr 27, 2013 | 200 gal | Other / Unknown | — | Other (specify below) |
| Apr 8, 2013 | 10 gal | Other / Unknown | — | Street/curb and gutter |
| Mar 27, 2013 | 8 gal | Other / Unknown | — | Other paved surface |
| Feb 27, 2013 | 20 gal | Grease / FOG | — | Other (specify below) |
| Feb 27, 2013 | 20 gal | Grease / FOG | — | Other (specify below) |
| Feb 20, 2013 | 20 gal | Root Intrusion | — | Other (specify below) |
| Dec 22, 2012 | 200 gal | Other / Unknown | — | Other (specify below) |
| Nov 22, 2012 | 20 gal | Root Intrusion | — | Other (specify below) |
| Nov 14, 2012 | 15 gal | Other / Unknown | — | Other (specify below) |
| Jan 3, 2012 | 20 gal | Other / Unknown | — | Other (specify below) |
| Dec 31, 2011 | 25 gal | Other / Unknown | — | Other paved surface |
| Dec 25, 2011 | 10 gal | Other / Unknown | — | Other paved surface |
| Nov 16, 2011 | 200 gal | Equipment Failure | Yes | Other paved surface;Surface water |
| Nov 3, 2011 | 5 gal | Equipment Failure | Yes | Surface water |
| Jan 28, 2011 | 150 gal | Other / Unknown | — | Other (specify below) |
| Jan 24, 2011 | 400 gal | Other / Unknown | — | Other (specify below) |
| Dec 24, 2010 | 200 gal | Equipment Failure | Yes | Other (specify below) |
| Nov 13, 2010 | 20 gal | Grease / FOG | — | Other paved surface |
| Jul 19, 2010 | 10 gal | Root Intrusion | — | Other (specify below) |
| Apr 29, 2010 | 100 gal | Other / Unknown | — | Street/curb and gutter |
| Apr 11, 2010 | 200 gal | Root Intrusion | — | Other paved surface |
| Mar 24, 2010 | 2 gal | Other / Unknown | — | Other paved surface |
| Oct 24, 2009 | 200 gal | Other / Unknown | — | Other (specify below) |
| Sep 28, 2009 | 60 gal | Other / Unknown | — | Other paved surface |
| Feb 10, 2009 | 40 gal | Other / Unknown | — | Beach |
| Jan 16, 2009 | 35 gal | Other / Unknown | — | Street/curb and gutter |
| Dec 30, 2008 | 40 gal | Equipment Failure | — | Other paved surface |
| Dec 30, 2008 | 17K gal | Equipment Failure | Yes | Surface water |
| Dec 30, 2008 | 1K gal | Equipment Failure | Yes | Surface water |
| Oct 15, 2008 | 50 gal | Grease / FOG | — | Street/curb and gutter |
| Oct 3, 2008 | 140 gal | Other / Unknown | — | Other (specify below) |
| Sep 27, 2008 | 60 gal | Equipment Failure | — | Other paved surface |
| Jul 16, 2008 | 10 gal | Other / Unknown | — | Other paved surface |
| Jun 7, 2008 | 50 gal | Root Intrusion | — | Street/curb and gutter |
| Jan 26, 2008 | 5 gal | Root Intrusion | — | Other (specify below) |
| Jan 25, 2008 | 20 gal | Equipment Failure | — | Other (specify below) |
| Dec 11, 2007 | 15 gal | Grease / FOG | — | Street/curb and gutter |
| Aug 29, 2007 | 60 gal | Grease / FOG | — | Other (specify below) |
| Aug 22, 2007 | 20 gal | Equipment Failure | — | Other (specify below) |
| May 28, 2007 | 10 gal | Equipment Failure | — | Street/curb and gutter |
| May 24, 2007 | 50 gal | Equipment Failure | — | Street/curb and gutter |
| Mar 14, 2007 | 50 gal | Grease / FOG | — | Other (specify below) |
| Feb 27, 2007 | 30 gal | Equipment Failure | — | Other paved surface |
| Feb 16, 2007 | 200 gal | Grease / FOG | — | Street/curb and gutter |
Source: California (CIWQS). Volumes are utility-reported estimates. Some events lack precise coordinates or volumes.