All rankings
California · California (CIWQS)

National City

B
Seldom reaches water
Reported events
57
Total volume
205K gal
Reached waterways
6 (11%)
Reporting since
2007

What caused the overflows

Grease / FOG
26
Equipment Failure
14
Root Intrusion
12
Other / Unknown
5

Reported overflow events (showing 57 of 57)

DateVolumeCauseReached waterReceiving water
Mar 18, 2025200 galRoot Intrusion——
Oct 23, 2024300 galGrease / FOG——
Sep 3, 2024360 galEquipment Failure——
Oct 26, 2023260 galRoot Intrusion—N/A
Jul 31, 202310K galEquipment Failure——
Nov 11, 202248K galEquipment FailureYesDrainage Channel;Separate Storm Drain
Sep 27, 2022300 galEquipment Failure—Separate Storm Drain;Street/Curb and Gutter
Sep 18, 20229K galRoot Intrusion—Building or Structure
Jul 12, 202224K galRoot IntrusionYesSeparate Storm Drain;Street/Curb and Gutter;Surface Water;Unpaved surface
Apr 24, 2022100 galEquipment Failure—Separate Storm Drain;Street/Curb and Gutter
Mar 15, 202225 galRoot Intrusion—Unpaved surface
Mar 15, 2022100 galRoot Intrusion—Separate Storm Drain;Street/Curb and Gutter
Feb 18, 202220 galGrease / FOG—Building or Structure
Nov 7, 202150 galGrease / FOG—Paved Surface
Aug 1, 202115 galGrease / FOG—Building or Structure
Oct 28, 202030 galGrease / FOG—Unpaved surface
Oct 12, 20205 galGrease / FOG—Street/Curb and Gutter
Jun 22, 202075 galGrease / FOG—Street/Curb and Gutter
May 23, 2020900 galGrease / FOG—Separate Storm Drain;Street/Curb and Gutter
Apr 13, 2020300 galGrease / FOG—Building or Structure
Dec 11, 201912K galOther / Unknown—Separate Storm Drain;Unpaved surface
Nov 12, 2019875 galGrease / FOG—Separate Storm Drain;Street/Curb and Gutter
Oct 31, 2019200 galGrease / FOG—Unpaved surface
May 2, 2019550 galOther / Unknown—Separate Storm Drain;Street/Curb and Gutter
Jan 14, 201930 galGrease / FOG—Separate Storm Drain;Street/Curb and Gutter
Dec 12, 2018750 galGrease / FOG—Building or Structure;Separate Storm Drain;Unpaved surface
Nov 29, 2018300 galGrease / FOG—Building or Structure;Unpaved surface
Nov 15, 2018400 galGrease / FOG—Other (specify below)
Oct 18, 2018200 galRoot Intrusion—Building or Structure
Sep 30, 2018400 galGrease / FOG—Separate Storm Drain;Street/Curb and Gutter
Aug 22, 201820 galEquipment Failure—Street/Curb and Gutter
Mar 16, 201851K galGrease / FOGYesSurface Water
Jan 29, 201850 galRoot Intrusion—Building or Structure;Other (specify below)
Dec 21, 201780 galEquipment Failure—Other (specify below)
Dec 13, 201720 galEquipment Failure—Separate Storm Drain
Oct 11, 2017300 galGrease / FOG—Separate Storm Drain;Street/Curb and Gutter
Jun 28, 20176K galOther / UnknownYesDrainage Channel;Paved Surface;Separate Storm Drain;Street/Curb and Gutter
Jan 19, 20178K galGrease / FOGYesSeparate Storm Drain;Surface Water
Nov 20, 2016600 galEquipment Failure—Separate Storm Drain;Street/Curb and Gutter
Oct 25, 20163 galRoot Intrusion—Building or Structure;Unpaved surface
Oct 6, 20164K galEquipment Failure—Unpaved surface
Jun 6, 2016900 galEquipment Failure—Unpaved surface
Feb 29, 2016800 galEquipment Failure—Separate Storm Drain;Street/Curb and Gutter
Jul 18, 2015600 galEquipment Failure—Building or Structure;Unpaved surface
Mar 15, 2015900 galRoot Intrusion—Building or Structure
Jan 7, 201530 galRoot Intrusion—Street/Curb and Gutter
May 20, 201420 galEquipment Failure—Street/Curb and Gutter
May 17, 2014340 galRoot Intrusion—Building or Structure;Unpaved surface
May 7, 201430 galGrease / FOG—Street/Curb and Gutter
Apr 18, 2014250 galGrease / FOG—Building or Structure
Jan 7, 20145 galGrease / FOG—Paved Surface
Aug 11, 201230 galGrease / FOG—Building or structure
Aug 11, 201215 galGrease / FOG—Building or structure
Aug 11, 201215 galGrease / FOG—Building or structure
Jan 6, 20102K galOther / Unknown—Separate storm drain
Oct 3, 200715K galOther / UnknownYesStorm drain
Mar 24, 20077K galGrease / FOG—Separate storm drain

Source: California (CIWQS). Volumes are utility-reported estimates. Some events lack precise coordinates or volumes.