All rankings
California · California (CIWQS)
US Marine Corps Base Camp Pendleton
C
Often reaches water
Reported events
249
Total volume
2.9M gal
Reached waterways
51 (20%)
Reporting since
2006
What caused the overflows
Other / Unknown
107
Equipment Failure
106
Grease / FOG
16
Root Intrusion
16
Rainfall / Flooding
2
Capacity Issue
2
Reported overflow events (showing 200 of 249)
| Date | Volume | Cause | Reached water | Receiving water |
|---|---|---|---|---|
| May 15, 2026 | 54 gal | Equipment Failure | — | — |
| Feb 18, 2026 | 233 gal | Grease / FOG | — | — |
| Feb 3, 2026 | 91K gal | Equipment Failure | — | — |
| Jan 30, 2026 | 29K gal | Equipment Failure | — | — |
| Jan 28, 2026 | 15K gal | Grease / FOG | Yes | Pilgrim Creek |
| Jan 10, 2026 | 2K gal | Equipment Failure | — | — |
| Jan 6, 2026 | 23K gal | Equipment Failure | Yes | Pacific Ocean |
| Oct 30, 2025 | 21K gal | Equipment Failure | Yes | Pilgrim Creek |
| Sep 30, 2025 | 157 gal | Equipment Failure | — | — |
| Jan 15, 2025 | 2K gal | Grease / FOG | — | — |
| Dec 30, 2024 | 50 gal | Grease / FOG | — | — |
| Dec 16, 2024 | 1.3M gal | Other / Unknown | Yes | San Onofre Creek |
| Oct 22, 2024 | 2K gal | Other / Unknown | — | — |
| Oct 22, 2024 | 2K gal | Other / Unknown | — | — |
| Jun 12, 2024 | 21K gal | Equipment Failure | Yes | Cristianitos Creek |
| Feb 22, 2024 | 100 gal | Other / Unknown | — | — |
| Jun 21, 2023 | 3K gal | Equipment Failure | — | — |
| Jun 8, 2023 | 250 gal | Other / Unknown | Yes | San Onofre Creek |
| Jun 7, 2023 | 3K gal | Grease / FOG | Yes | Pacific Ocean |
| Mar 31, 2023 | 400 gal | Equipment Failure | — | Paved Surface |
| Mar 22, 2023 | 180 gal | Equipment Failure | — | Unpaved surface |
| Mar 15, 2023 | 975 gal | Equipment Failure | Yes | Separate Storm Drain |
| Jan 28, 2023 | 2K gal | Grease / FOG | — | Other (specify below) |
| Jan 26, 2023 | 2K gal | Equipment Failure | Yes | Paved Surface;Separate Storm Drain |
| Jan 16, 2023 | 4K gal | Equipment Failure | — | Unpaved surface |
| Dec 23, 2022 | 430 gal | Equipment Failure | — | Unpaved surface |
| Aug 10, 2022 | 240 gal | Equipment Failure | Yes | Drainage Channel;Unpaved surface |
| May 3, 2022 | 1 gal | Equipment Failure | — | Unpaved surface |
| Mar 30, 2022 | 8K gal | Other / Unknown | Yes | Separate Storm Drain;Unpaved surface |
| Feb 28, 2022 | 40 gal | Equipment Failure | — | Paved Surface |
| Dec 6, 2021 | 28K gal | Equipment Failure | — | Separate Storm Drain |
| Nov 27, 2021 | 840 gal | Equipment Failure | Yes | Separate Storm Drain;Unpaved surface |
| Jul 9, 2021 | 800 gal | Other / Unknown | — | Other (specify below) |
| Jul 7, 2021 | 50K gal | Equipment Failure | Yes | Separate Storm Drain;Surface Water;Unpaved surface |
| May 6, 2021 | 1K gal | Other / Unknown | — | Other (specify below) |
| Apr 9, 2021 | 50 gal | Other / Unknown | — | Unpaved surface |
| Mar 29, 2021 | 38K gal | Equipment Failure | Yes | Separate Storm Drain;Surface Water;Unpaved surface |
| Mar 4, 2021 | 410 gal | Equipment Failure | Yes | Separate Storm Drain;Street/Curb and Gutter;Unpaved surface |
| Mar 3, 2021 | 60 gal | Equipment Failure | — | Unpaved surface |
| Feb 11, 2021 | 90 gal | Equipment Failure | — | Paved Surface |
| Feb 2, 2021 | 25 gal | Other / Unknown | — | Unpaved surface |
| Oct 27, 2020 | 100 gal | Equipment Failure | — | Paved Surface |
| Sep 3, 2020 | 150 gal | Other / Unknown | Yes | Unpaved surface |
| Aug 28, 2020 | 70 gal | Equipment Failure | — | Unpaved surface |
| May 5, 2020 | 50 gal | Equipment Failure | — | Paved Surface |
| Apr 2, 2020 | 30 gal | Equipment Failure | — | Paved Surface |
| Apr 1, 2020 | 50 gal | Equipment Failure | — | Paved Surface |
| Mar 13, 2020 | 3K gal | Grease / FOG | Yes | Other (specify below);Separate Storm Drain;Street/Curb and Gutter;Unpaved surface |
| Feb 2, 2020 | 90K gal | Other / Unknown | Yes | Unpaved surface |
| Feb 2, 2020 | 90K gal | Other / Unknown | Yes | Drainage Channel;Unpaved surface |
| Dec 11, 2019 | 19K gal | Equipment Failure | — | Unpaved surface |
| Dec 11, 2019 | 25K gal | Equipment Failure | Yes | Unpaved surface |
| Sep 15, 2019 | 20 gal | Equipment Failure | — | Street/Curb and Gutter;Unpaved surface |
| Jun 15, 2019 | 60 gal | Other / Unknown | — | Unpaved surface |
| Mar 30, 2019 | 5 gal | Other / Unknown | — | Unpaved surface |
| Mar 27, 2019 | 30 gal | Other / Unknown | — | Unpaved surface |
| Mar 16, 2019 | 220 gal | Equipment Failure | — | Beach |
| Dec 11, 2018 | 360 gal | Equipment Failure | Yes | Separate Storm Drain;Street/Curb and Gutter |
| Nov 19, 2018 | 50 gal | Equipment Failure | — | Paved Surface |
| Sep 27, 2018 | 11K gal | Other / Unknown | Yes | Drainage Channel;Paved Surface;Unpaved surface |
| Aug 25, 2018 | 38K gal | Equipment Failure | Yes | Other (specify below);Unpaved surface |
| May 30, 2018 | 200 gal | Other / Unknown | — | Unpaved surface |
| Apr 4, 2018 | 30 gal | Equipment Failure | — | Unpaved surface |
| Mar 7, 2018 | 20 gal | Equipment Failure | — | Other (specify below) |
| Feb 16, 2018 | 300 gal | Grease / FOG | Yes | Drainage Channel |
| Feb 6, 2018 | 4K gal | Equipment Failure | Yes | Drainage Channel;Unpaved surface |
| Dec 17, 2017 | 675 gal | Equipment Failure | Yes | Surface Water |
| Nov 25, 2017 | 700 gal | Equipment Failure | Yes | Drainage Channel;Unpaved surface |
| Nov 22, 2017 | 770 gal | Equipment Failure | Yes | Drainage Channel;Unpaved surface |
| Aug 17, 2017 | 60 gal | Equipment Failure | — | Unpaved surface |
| Jul 4, 2017 | 13K gal | Equipment Failure | — | Unpaved surface |
| Jul 4, 2017 | 300 gal | Equipment Failure | — | Other (specify below);Unpaved surface |
| Jun 12, 2017 | 100 gal | Equipment Failure | — | Other (specify below) |
| Apr 26, 2017 | 10 gal | Equipment Failure | Yes | Other (specify below);Separate Storm Drain |
| Apr 17, 2017 | 800 gal | Other / Unknown | — | Unpaved surface |
| Oct 19, 2016 | 7K gal | Equipment Failure | — | Unpaved surface |
| Oct 5, 2016 | 100 gal | Equipment Failure | — | Paved Surface |
| Jun 30, 2016 | 375 gal | Equipment Failure | — | Paved Surface;Separate Storm Drain |
| Jun 28, 2016 | 15 gal | Other / Unknown | — | Unpaved surface |
| Jun 28, 2016 | 50 gal | Equipment Failure | — | Paved Surface;Street/Curb and Gutter |
| Feb 23, 2016 | 200 gal | Other / Unknown | Yes | Drainage Channel |
| Feb 19, 2016 | 200 gal | Other / Unknown | — | Paved Surface |
| Dec 10, 2015 | 6K gal | Equipment Failure | Yes | Drainage Channel |
| Nov 13, 2015 | 30 gal | Equipment Failure | — | Paved Surface |
| Nov 7, 2015 | 15 gal | Equipment Failure | — | Other (specify below) |
| Sep 25, 2015 | 27K gal | Equipment Failure | Yes | Drainage Channel |
| Sep 7, 2015 | 4K gal | Equipment Failure | — | Street/Curb and Gutter |
| Aug 6, 2015 | 800 gal | Equipment Failure | — | Beach |
| Jul 30, 2015 | 2K gal | Equipment Failure | — | Separate Storm Drain |
| Jun 28, 2015 | 5 gal | Other / Unknown | — | Paved Surface |
| May 11, 2015 | 625 gal | Equipment Failure | — | Unpaved surface |
| Feb 2, 2015 | 40 gal | Grease / FOG | — | Paved Surface;Separate Storm Drain |
| Jan 6, 2015 | 100 gal | Other / Unknown | — | Paved Surface;Street/Curb and Gutter;Unpaved surface |
| Nov 25, 2014 | 170 gal | Equipment Failure | — | Other (specify below) |
| Oct 28, 2014 | 5K gal | Equipment Failure | — | Drainage Channel;Street/Curb and Gutter |
| Oct 13, 2014 | 4K gal | Equipment Failure | — | Paved Surface;Separate Storm Drain;Street/Curb and Gutter;Unpaved surface |
| Sep 17, 2014 | 20 gal | Equipment Failure | — | Paved Surface;Separate Storm Drain |
| Sep 5, 2014 | 5 gal | Other / Unknown | — | Other (specify below) |
| Aug 15, 2014 | 2K gal | Equipment Failure | Yes | Paved Surface;Separate Storm Drain;Street/Curb and Gutter;Unpaved surface |
| Jun 4, 2014 | 15 gal | Other / Unknown | — | Paved Surface;Unpaved surface |
| May 29, 2014 | 5K gal | Other / Unknown | — | Unpaved surface |
| Apr 11, 2014 | 20 gal | Equipment Failure | — | Paved Surface;Unpaved surface |
| Mar 21, 2014 | 2K gal | Other / Unknown | Yes | Drainage Channel;Paved Surface;Street/Curb and Gutter;Unpaved surface |
| Dec 3, 2013 | 450 gal | Equipment Failure | — | Other (specify below) |
| Nov 26, 2013 | 90 gal | Equipment Failure | — | Other (specify below) |
| Sep 16, 2013 | 500 gal | Other / Unknown | — | Unpaved surface |
| Sep 15, 2013 | 55 gal | Other / Unknown | — | Beach |
| Jul 26, 2013 | 600 gal | Other / Unknown | — | Other (specify below) |
| Jul 18, 2013 | 2K gal | Root Intrusion | — | Unpaved surface |
| Jun 28, 2013 | 224K gal | Equipment Failure | Yes | Drainage Channel |
| Jun 3, 2013 | 750 gal | Other / Unknown | — | Other (specify below) |
| Apr 5, 2013 | 150 gal | Other / Unknown | — | Unpaved surface;Other (specify below) |
| Mar 6, 2013 | 200 gal | Other / Unknown | — | Other (specify below) |
| Dec 10, 2012 | 75 gal | Equipment Failure | Yes | Separate storm drain |
| Dec 6, 2012 | 1K gal | Other / Unknown | — | Other (specify below) |
| Nov 28, 2012 | 5 gal | Other / Unknown | Yes | Separate storm drain |
| Nov 15, 2012 | 30 gal | Other / Unknown | — | Unpaved surface |
| Oct 15, 2012 | 750 gal | Other / Unknown | — | Unpaved surface |
| Oct 3, 2012 | 100 gal | Other / Unknown | — | Unpaved surface |
| Aug 23, 2012 | 2K gal | Equipment Failure | — | Other paved surface |
| Aug 22, 2012 | 6 gal | Other / Unknown | — | Unpaved surface |
| Aug 13, 2012 | 3K gal | Other / Unknown | — | Other paved surface;Other (specify below) |
| Jul 4, 2012 | 30 gal | Equipment Failure | — | Unpaved surface |
| Jul 4, 2012 | 50 gal | Equipment Failure | — | Unpaved surface |
| Jun 30, 2012 | 375 gal | Other / Unknown | — | Unpaved surface |
| Jun 29, 2012 | 10 gal | Other / Unknown | — | Unpaved surface |
| Jun 25, 2012 | 3 gal | Other / Unknown | — | Unpaved surface |
| Apr 16, 2012 | 100 gal | Other / Unknown | — | Other (specify below) |
| Mar 1, 2012 | 10 gal | Other / Unknown | — | Unpaved surface |
| Feb 25, 2012 | 50 gal | Other / Unknown | — | Unpaved surface |
| Feb 16, 2012 | 5K gal | Equipment Failure | — | Unpaved surface |
| Feb 12, 2012 | 41K gal | Other / Unknown | Yes | Beach |
| Jan 13, 2012 | 360 gal | Grease / FOG | — | Separate storm drain |
| Dec 5, 2011 | 200 gal | Equipment Failure | — | Other paved surface;Unpaved surface |
| Nov 8, 2011 | 12K gal | Root Intrusion | Yes | Surface water |
| Oct 28, 2011 | 25 gal | Other / Unknown | — | Unpaved surface |
| Oct 25, 2011 | 12K gal | Root Intrusion | — | Other (specify below) |
| Jul 12, 2011 | 20 gal | Other / Unknown | — | Other (specify below) |
| Jul 11, 2011 | 100 gal | Equipment Failure | — | Other (specify below) |
| Jul 8, 2011 | 50 gal | Equipment Failure | — | Other (specify below) |
| Jul 8, 2011 | 5 gal | Other / Unknown | — | Other (specify below) |
| Jun 7, 2011 | 3 gal | Other / Unknown | — | Unpaved surface |
| May 14, 2011 | 10 gal | Other / Unknown | — | Unpaved surface |
| May 5, 2011 | 10 gal | Other / Unknown | — | Unpaved surface;Other (specify below) |
| Apr 23, 2011 | 500 gal | Other / Unknown | — | Street/curb and gutter |
| Apr 19, 2011 | 15 gal | Other / Unknown | — | Unpaved surface |
| Apr 14, 2011 | 400 gal | Other / Unknown | — | Street/curb and gutter;Unpaved surface |
| Mar 11, 2011 | 50 gal | Equipment Failure | — | Separate storm drain;Unpaved surface |
| Feb 2, 2011 | 1K gal | Other / Unknown | — | Unpaved surface |
| Jan 27, 2011 | 200 gal | Other / Unknown | — | Separate storm drain |
| Jan 6, 2011 | 500 gal | Other / Unknown | — | Other paved surface;Unpaved surface |
| Dec 30, 2010 | 250 gal | Other / Unknown | Yes | Surface water |
| Dec 22, 2010 | 12K gal | Rainfall / Flooding | Yes | Surface water |
| Dec 21, 2010 | 500 gal | Equipment Failure | Yes | Surface water |
| Dec 21, 2010 | 4K gal | Rainfall / Flooding | Yes | Surface water |
| Nov 17, 2010 | 50 gal | Other / Unknown | — | Unpaved surface |
| Nov 8, 2010 | 50 gal | Other / Unknown | — | Other paved surface;Unpaved surface |
| Nov 3, 2010 | 40 gal | Other / Unknown | — | Other paved surface |
| Oct 19, 2010 | 100 gal | Other / Unknown | — | Unpaved surface |
| Oct 7, 2010 | 50 gal | Other / Unknown | — | Unpaved surface |
| Oct 5, 2010 | 25 gal | Equipment Failure | — | Separate storm drain |
| Sep 28, 2010 | 12K gal | Other / Unknown | — | Other (specify below) |
| Sep 18, 2010 | 150 gal | Equipment Failure | — | Unpaved surface |
| Aug 31, 2010 | 10 gal | Other / Unknown | — | Other (specify below) |
| Aug 18, 2010 | 400 gal | Other / Unknown | — | Unpaved surface |
| Aug 15, 2010 | 20 gal | Other / Unknown | — | Other (specify below) |
| Jul 29, 2010 | 2K gal | Other / Unknown | — | Other (specify below) |
| Jul 26, 2010 | 50 gal | Equipment Failure | — | Unpaved surface |
| Jul 23, 2010 | 5K gal | Other / Unknown | — | Other (specify below) |
| Jul 7, 2010 | 5 gal | Other / Unknown | — | Unpaved surface |
| Jun 30, 2010 | 12K gal | Other / Unknown | — | Other (specify below) |
| Jun 2, 2010 | 200 gal | Grease / FOG | — | Storm drain;Street/curb and gutter |
| May 25, 2010 | 1K gal | Other / Unknown | — | Storm drain;Unpaved surface |
| Mar 22, 2010 | 125 gal | Other / Unknown | — | Unpaved surface |
| Mar 16, 2010 | 20 gal | Equipment Failure | — | Unpaved surface |
| Mar 15, 2010 | 100 gal | Root Intrusion | — | Unpaved surface |
| Mar 15, 2010 | 15 gal | Other / Unknown | — | Unpaved surface |
| Feb 22, 2010 | 8K gal | Other / Unknown | Yes | Beach |
| Jan 22, 2010 | 3K gal | Other / Unknown | Yes | Unpaved surface |
| Jan 17, 2010 | 3K gal | Grease / FOG | — | Separate storm drain |
| Jan 12, 2010 | 500 gal | Grease / FOG | — | Separate storm drain |
| Dec 29, 2009 | 2 gal | Other / Unknown | — | Unpaved surface |
| Dec 11, 2009 | 2 gal | Other / Unknown | — | Unpaved surface |
| Nov 30, 2009 | 3 gal | Other / Unknown | — | Other paved surface |
| Nov 5, 2009 | 25 gal | Other / Unknown | — | Unpaved surface |
| Oct 29, 2009 | 200 gal | Root Intrusion | — | Street/curb and gutter;Unpaved surface |
| Oct 9, 2009 | 40 gal | Other / Unknown | — | Unpaved surface |
| Oct 1, 2009 | 5 gal | Other / Unknown | — | Unpaved surface |
| Sep 22, 2009 | 200 gal | Other / Unknown | — | Other (specify below) |
| Jul 24, 2009 | 200 gal | Other / Unknown | — | Other paved surface |
| Jul 8, 2009 | 20 gal | Other / Unknown | — | Storm drain |
| Jun 6, 2009 | 25 gal | Other / Unknown | — | Unpaved surface |
| May 11, 2009 | 200 gal | Other / Unknown | — | Other paved surface;Unpaved surface |
| Apr 1, 2009 | 1 gal | Equipment Failure | — | Unpaved surface |
| Mar 31, 2009 | 2K gal | Other / Unknown | — | Building or structure |
| Mar 30, 2009 | 500 gal | Other / Unknown | — | Unpaved surface |
| Mar 23, 2009 | 48K gal | Equipment Failure | Yes | Surface water;Unpaved surface |
| Jan 27, 2009 | 10K gal | Other / Unknown | — | Other (specify below) |
| Dec 10, 2008 | 100 gal | Other / Unknown | — | Other (specify below) |
| Oct 31, 2008 | 400 gal | Grease / FOG | — | Unpaved surface |
Source: California (CIWQS). Volumes are utility-reported estimates. Some events lack precise coordinates or volumes.