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California · California (CIWQS)
West Hollywood City
F
Usually reaches water
Reported events
80
Total volume
206K gal
Reached waterways
46 (57%)
Reporting since
2007
What caused the overflows
Other / Unknown
36
Grease / FOG
21
Root Intrusion
19
Equipment Failure
4
Reported overflow events (showing 80 of 80)
| Date | Volume | Cause | Reached water | Receiving water |
|---|---|---|---|---|
| Feb 13, 2025 | 8K gal | Grease / FOG | Yes | Ballona Creek |
| Aug 24, 2024 | 500 gal | Equipment Failure | Yes | Ballona Creek |
| May 8, 2024 | 32K gal | Root Intrusion | Yes | Hollyhills Drain, Ballona Creek, and Santa Monica Bay |
| May 8, 2024 | 32K gal | Root Intrusion | Yes | Hollyhills Drain, Ballona Creek, and Santa Monica Bay |
| Mar 11, 2024 | 2K gal | Root Intrusion | Yes | Ballona Creek, Santa Monica Bay |
| Feb 21, 2024 | 4K gal | Equipment Failure | Yes | Ballona Creek, Santa Monica Bay |
| Oct 21, 2023 | 60 gal | Grease / FOG | — | — |
| Feb 3, 2023 | 4K gal | Other / Unknown | Yes | Drainage Channel;Other (specify below);Separate Storm Drain;Street/Curb and Gutter |
| Dec 23, 2022 | 14K gal | Other / Unknown | Yes | Building or Structure;Drainage Channel;Other (specify below);Separate Storm Drain;Street/Curb and Gutter |
| Nov 11, 2022 | 6K gal | Other / Unknown | Yes | Drainage Channel;Other (specify below);Paved Surface;Separate Storm Drain;Street/Curb and Gutter |
| Sep 3, 2022 | 400 gal | Root Intrusion | Yes | Building or Structure;Other (specify below);Separate Storm Drain;Street/Curb and Gutter |
| Jun 16, 2022 | 100 gal | Other / Unknown | — | Other (specify below) |
| Feb 26, 2022 | 1K gal | Other / Unknown | Yes | Other (specify below);Paved Surface;Separate Storm Drain;Street/Curb and Gutter |
| Feb 2, 2022 | 300 gal | Grease / FOG | — | Other (specify below) |
| Jan 15, 2022 | 200 gal | Other / Unknown | — | Other (specify below);Paved Surface |
| Dec 28, 2021 | 250 gal | Other / Unknown | — | Other (specify below) |
| Oct 28, 2021 | 100 gal | Grease / FOG | — | Other (specify below) |
| Sep 14, 2021 | 5K gal | Other / Unknown | Yes | Drainage Channel;Other (specify below);Separate Storm Drain;Street/Curb and Gutter |
| Aug 3, 2021 | 900 gal | Other / Unknown | Yes | Drainage Channel;Other (specify below);Separate Storm Drain;Street/Curb and Gutter |
| Mar 10, 2021 | 500 gal | Other / Unknown | — | Other (specify below) |
| Nov 24, 2020 | 200 gal | Other / Unknown | — | Building or Structure;Other (specify below) |
| Aug 2, 2019 | 150 gal | Grease / FOG | — | Other (specify below) |
| Mar 26, 2019 | 925 gal | Grease / FOG | Yes | Drainage Channel;Other (specify below);Separate Storm Drain |
| Jan 18, 2018 | 50 gal | Grease / FOG | — | Other (specify below) |
| Sep 3, 2017 | 9K gal | Other / Unknown | Yes | Drainage Channel;Other (specify below);Separate Storm Drain |
| Aug 2, 2017 | 100 gal | Grease / FOG | Yes | Other (specify below);Paved Surface;Separate Storm Drain;Street/Curb and Gutter |
| Mar 16, 2017 | 2K gal | Grease / FOG | Yes | Building or Structure;Drainage Channel;Separate Storm Drain |
| Jan 23, 2017 | 11K gal | Grease / FOG | Yes | Drainage Channel;Separate Storm Drain;Surface Water |
| Dec 24, 2016 | 100 gal | Other / Unknown | — | Other (specify below) |
| Sep 10, 2016 | 500 gal | Other / Unknown | Yes | Drainage Channel;Separate Storm Drain;Surface Water |
| Feb 21, 2016 | 2K gal | Other / Unknown | Yes | Building or Structure;Drainage Channel;Separate Storm Drain;Street/Curb and Gutter;Surface Water |
| Feb 14, 2016 | 1K gal | Other / Unknown | — | Other (specify below);Paved Surface |
| Sep 20, 2015 | 2K gal | Root Intrusion | Yes | Drainage Channel;Separate Storm Drain;Street/Curb and Gutter |
| Mar 19, 2015 | 300 gal | Other / Unknown | — | Building or Structure;Other (specify below) |
| Feb 6, 2015 | 800 gal | Other / Unknown | Yes | Drainage Channel;Other (specify below);Separate Storm Drain;Street/Curb and Gutter |
| Jan 6, 2015 | 23K gal | Other / Unknown | — | Building or Structure |
| Oct 23, 2014 | 211 gal | Other / Unknown | Yes | Drainage Channel;Other (specify below);Separate Storm Drain |
| Aug 19, 2014 | 10K gal | Equipment Failure | Yes | Drainage Channel;Separate Storm Drain;Street/Curb and Gutter;Surface Water |
| Aug 16, 2014 | 300 gal | Other / Unknown | Yes | Drainage Channel;Other (specify below);Separate Storm Drain |
| Aug 7, 2014 | 2K gal | Root Intrusion | Yes | Drainage Channel;Other (specify below);Separate Storm Drain |
| Aug 6, 2014 | 15K gal | Other / Unknown | — | Building or Structure;Other (specify below) |
| Mar 13, 2014 | 700 gal | Root Intrusion | Yes | Other (specify below);Separate Storm Drain;Surface Water |
| Sep 10, 2013 | 50 gal | Other / Unknown | Yes | Other (specify below);Separate Storm Drain |
| Jan 9, 2013 | 500 gal | Grease / FOG | Yes | Combined storm drain (combined CS only) |
| Sep 10, 2012 | 400 gal | Other / Unknown | Yes | Separate storm drain;Other (specify below) |
| Aug 28, 2012 | 300 gal | Root Intrusion | — | Other (specify below) |
| Sep 1, 2011 | 200 gal | Equipment Failure | — | Other (specify below) |
| Sep 1, 2011 | 50 gal | Other / Unknown | Yes | Separate storm drain;Other (specify below) |
| Feb 13, 2011 | 200 gal | Root Intrusion | — | Unpaved surface |
| Nov 19, 2010 | 300 gal | Root Intrusion | Yes | Other (specify below) |
| Nov 14, 2010 | 200 gal | Grease / FOG | Yes | Other (specify below) |
| Nov 3, 2010 | 100 gal | Other / Unknown | Yes | Other (specify below) |
| Aug 13, 2010 | 5 gal | Grease / FOG | — | Other (specify below) |
| Aug 13, 2010 | 300 gal | Grease / FOG | — | Other (specify below) |
| Jun 29, 2010 | 200 gal | Root Intrusion | — | Other (specify below) |
| Jun 8, 2010 | 300 gal | Grease / FOG | — | Other (specify below) |
| Jun 8, 2010 | 700 gal | Grease / FOG | Yes | Storm drain;Other (specify below) |
| May 24, 2010 | 600 gal | Other / Unknown | Yes | Storm drain;Other (specify below) |
| Oct 4, 2009 | 800 gal | Root Intrusion | Yes | Storm drain;Other (specify below) |
| Jul 22, 2009 | 300 gal | Grease / FOG | — | Other (specify below) |
| Apr 22, 2009 | 3K gal | Root Intrusion | Yes | Other (specify below) |
| Sep 10, 2008 | 500 gal | Root Intrusion | — | Other (specify below) |
| Aug 1, 2008 | 200 gal | Grease / FOG | — | Other (specify below) |
| Jun 20, 2008 | 200 gal | Other / Unknown | — | Other (specify below) |
| Jun 20, 2008 | 300 gal | Other / Unknown | — | Other (specify below) |
| Jun 20, 2008 | 500 gal | Other / Unknown | — | Other (specify below) |
| Jun 18, 2008 | 2K gal | Other / Unknown | Yes | Other (specify below) |
| Apr 14, 2008 | 100 gal | Grease / FOG | — | Other (specify below) |
| Apr 14, 2008 | 50 gal | Other / Unknown | Yes | Other (specify below) |
| Apr 11, 2008 | 700 gal | Other / Unknown | Yes | Other (specify below) |
| Jan 19, 2008 | 100 gal | Root Intrusion | Yes | Storm drain |
| Oct 16, 2007 | 200 gal | Other / Unknown | Yes | Other (specify below) |
| Oct 16, 2007 | 50 gal | Other / Unknown | — | Other (specify below) |
| Sep 23, 2007 | 200 gal | Grease / FOG | — | Other (specify below) |
| Sep 19, 2007 | 100 gal | Other / Unknown | — | Street/curb and gutter |
| Aug 16, 2007 | 100 gal | Root Intrusion | Yes | Storm drain |
| Mar 5, 2007 | 200 gal | Root Intrusion | Yes | Other (specify below) |
| Mar 5, 2007 | 100 gal | Root Intrusion | — | Other (specify below) |
| Feb 12, 2007 | 100 gal | Grease / FOG | — | Street/curb and gutter |
| Feb 5, 2007 | 100 gal | Root Intrusion | Yes | Other (specify below) |
Source: California (CIWQS). Volumes are utility-reported estimates. Some events lack precise coordinates or volumes.