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California · California (CIWQS)
MH 434
D
Frequently reaches water
Reported events
40
Total volume
28K gal
Reached waterways
15 (38%)
Reporting since
2007
What caused the overflows
Other / Unknown
13
Equipment Failure
12
Grease / FOG
10
Root Intrusion
4
Capacity Issue
1
Reported overflow events (showing 40 of 40)
| Date | Volume | Cause | Reached water | Receiving water |
|---|---|---|---|---|
| Apr 24, 2026 | 135 gal | Root Intrusion | — | Pond 20 |
| Mar 15, 2023 | 100 gal | Equipment Failure | Yes | Drainage Channel;Paved Surface;Street/Curb and Gutter |
| Jul 1, 2022 | 950 gal | Equipment Failure | — | Building or Structure;Drainage Channel;Paved Surface;Street/Curb and Gutter |
| Sep 13, 2021 | 35 gal | Root Intrusion | — | Paved Surface;Street/Curb and Gutter |
| Feb 18, 2021 | 120 gal | Grease / FOG | — | Building or Structure;Drainage Channel;Paved Surface;Separate Storm Drain;Street/Curb and Gutter |
| Jan 27, 2021 | 50 gal | Equipment Failure | Yes | Drainage Channel;Paved Surface |
| Mar 25, 2020 | 150 gal | Grease / FOG | — | Other (specify below);Paved Surface;Street/Curb and Gutter |
| Sep 19, 2019 | 73 gal | Grease / FOG | — | Drainage Channel;Paved Surface;Street/Curb and Gutter |
| Jun 17, 2019 | 10 gal | Grease / FOG | — | Paved Surface;Street/Curb and Gutter |
| Dec 7, 2018 | 3K gal | Capacity Issue | Yes | Beach;Paved Surface;Separate Storm Drain;Street/Curb and Gutter;Surface Water |
| Jan 6, 2018 | 350 gal | Equipment Failure | — | Paved Surface;Street/Curb and Gutter |
| Aug 13, 2017 | 900 gal | Other / Unknown | Yes | Paved Surface;Surface Water |
| Apr 5, 2017 | 3 gal | Equipment Failure | — | Paved Surface |
| Feb 23, 2017 | 15 gal | Equipment Failure | — | Paved Surface;Street/Curb and Gutter;Unpaved surface |
| Jan 23, 2017 | 3K gal | Equipment Failure | Yes | Separate Storm Drain;Surface Water |
| Dec 25, 2016 | 185 gal | Root Intrusion | Yes | Separate Storm Drain |
| Oct 12, 2016 | 40 gal | Grease / FOG | Yes | Paved Surface;Street/Curb and Gutter;Surface Water |
| May 5, 2016 | 2K gal | Other / Unknown | Yes | Drainage Channel;Paved Surface;Street/Curb and Gutter |
| Mar 5, 2016 | 1 gal | Other / Unknown | — | Paved Surface |
| Jul 27, 2015 | 50 gal | Grease / FOG | — | Paved Surface |
| Apr 21, 2015 | 2K gal | Grease / FOG | — | Drainage Channel;Paved Surface;Separate Storm Drain |
| Apr 20, 2015 | 10 gal | Other / Unknown | — | Paved Surface;Street/Curb and Gutter |
| Apr 8, 2015 | 10 gal | Other / Unknown | — | Paved Surface;Street/Curb and Gutter |
| Apr 4, 2015 | 6K gal | Equipment Failure | — | Separate Storm Drain |
| Mar 27, 2015 | 150 gal | Other / Unknown | — | Drainage Channel;Paved Surface;Street/Curb and Gutter |
| Mar 4, 2015 | 300 gal | Grease / FOG | Yes | Unpaved surface |
| Oct 6, 2014 | 600 gal | Equipment Failure | Yes | Other (specify below) |
| Sep 24, 2014 | 15 gal | Root Intrusion | — | Paved Surface |
| Feb 18, 2013 | 6K gal | Other / Unknown | Yes | Surface water |
| Jun 3, 2012 | 40 gal | Other / Unknown | — | Street/curb and gutter;Unpaved surface;Other (specify below) |
| May 20, 2012 | 50 gal | Other / Unknown | — | Street/curb and gutter |
| Jan 31, 2011 | 100 gal | Other / Unknown | — | Separate storm drain |
| Sep 24, 2010 | 30 gal | Other / Unknown | Yes | Storm drain |
| Jan 31, 2010 | 15 gal | Other / Unknown | — | Street/curb and gutter |
| Jan 7, 2010 | 300 gal | Grease / FOG | Yes | Storm drain;Street/curb and gutter;Other (specify below) |
| Oct 8, 2009 | 75 gal | Other / Unknown | — | Storm drain |
| Jul 18, 2009 | 5 gal | Equipment Failure | — | Other paved surface |
| Mar 29, 2007 | 2 gal | Equipment Failure | — | Other (specify below) |
| Jan 19, 2007 | 233 gal | Equipment Failure | Yes | Beach;Surface water |
| Jan 12, 2007 | 672 gal | Grease / FOG | Yes | Storm drain;Surface water;Other (specify below) |
Source: California (CIWQS). Volumes are utility-reported estimates. Some events lack precise coordinates or volumes.