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California · California (CIWQS)

Santa Monica City

A
Rarely reaches water
Reported events
179
Total volume
329K gal
Reached waterways
5 (3%)
Reporting since
2007

What caused the overflows

Root Intrusion
90
Equipment Failure
42
Other / Unknown
24
Grease / FOG
23

Reported overflow events (showing 179 of 179)

DateVolumeCauseReached waterReceiving water
Jun 4, 20262K galGrease / FOG——
Jun 1, 20263K galGrease / FOG—If spill somehow reaches water it would be Ballona Creek
Mar 8, 2026644 galOther / Unknown——
Oct 9, 2025200 galOther / Unknown——
Jul 22, 20251K galGrease / FOG——
Jan 4, 2025480 galRoot IntrusionYesnone
Jan 4, 2025480 galRoot IntrusionYesnone
Dec 17, 2024375 galRoot Intrusion—none
May 22, 2024125 galRoot Intrusion——
Feb 4, 2024540 galRoot Intrusion——
Dec 4, 2023500 galOther / Unknown—None
Oct 4, 2023100 galGrease / FOG——
Sep 27, 202350 galEquipment Failure——
Aug 3, 2023180 galGrease / FOG——
Jun 26, 202312K galRoot Intrusion——
May 16, 2023100 galRoot Intrusion—Building or Structure
Mar 30, 202375 galRoot Intrusion—Other (specify below)
Mar 28, 20233K galEquipment Failure—Other (specify below);Paved Surface;Unpaved surface
Mar 26, 202381K galEquipment Failure—Drainage Channel;Other (specify below);Paved Surface;Separate Storm Drain;Unpaved surface
Mar 18, 202310 galRoot Intrusion—Other (specify below)
Feb 17, 202320K galEquipment Failure—Separate Storm Drain;Street/Curb and Gutter
Feb 17, 20233K galEquipment Failure—Building or Structure
Feb 15, 2023244 galRoot Intrusion—Paved Surface;Separate Storm Drain;Street/Curb and Gutter
Feb 3, 20231K galRoot Intrusion—Other (specify below);Paved Surface;Separate Storm Drain
Dec 6, 202285 galRoot Intrusion—Other (specify below)
Dec 1, 2022909 galRoot Intrusion—Paved Surface;Separate Storm Drain;Street/Curb and Gutter
Nov 11, 202240 galEquipment Failure—Other (specify below);Paved Surface
Oct 21, 202210 galEquipment Failure—Paved Surface;Separate Storm Drain;Street/Curb and Gutter
Oct 14, 2022970 galRoot IntrusionYesPaved Surface;Separate Storm Drain;Street/Curb and Gutter
Oct 5, 20229K galRoot Intrusion—Paved Surface;Separate Storm Drain;Street/Curb and Gutter;Unpaved surface
Apr 21, 202235 galRoot Intrusion—
Apr 4, 20224K galEquipment Failure—Paved Surface;Street/Curb and Gutter
Nov 17, 20212K galEquipment Failure—Other (specify below)
Oct 10, 2021415 galRoot Intrusion—Other (specify below);Paved Surface
Jun 19, 2021150 galRoot Intrusion—Other (specify below)
May 26, 20212K galRoot Intrusion—Other (specify below);Paved Surface;Street/Curb and Gutter
Apr 28, 202110 galRoot Intrusion—Paved Surface
Mar 10, 2021415 galRoot Intrusion—Other (specify below)
Mar 7, 20211K galRoot Intrusion—Building or Structure;Other (specify below);Paved Surface
Feb 24, 2021692 galRoot Intrusion—Separate Storm Drain;Street/Curb and Gutter
Feb 9, 20218 galEquipment Failure—Paved Surface;Street/Curb and Gutter
Jan 26, 2021550 galRoot Intrusion—Separate Storm Drain;Street/Curb and Gutter
Jan 5, 202110 galEquipment Failure—Other (specify below);Paved Surface
Dec 6, 20208K galRoot Intrusion—Drainage Channel;Street/Curb and Gutter
Dec 5, 20208K galOther / Unknown—Building or Structure;Other (specify below);Paved Surface
Dec 1, 20202K galGrease / FOG—Combined Storm Drain (Combined CS only);Drainage Channel;Paved Surface;Separate Storm Drain;Street/Curb and Gutter
Nov 15, 202050 galRoot Intrusion—Other (specify below);Paved Surface
Nov 13, 20205K galRoot Intrusion—Other (specify below)
Aug 22, 20205 galRoot Intrusion—Paved Surface
Aug 19, 202015 galEquipment Failure—Street/Curb and Gutter
May 22, 20205K galEquipment Failure—Other (specify below);Paved Surface
Apr 26, 20205 galRoot Intrusion—Paved Surface
Apr 14, 202060 galEquipment Failure—Paved Surface;Separate Storm Drain
Nov 13, 201950 galRoot Intrusion—Paved Surface
Nov 8, 2019220 galOther / Unknown—Paved Surface;Separate Storm Drain
Jul 25, 201950 galEquipment Failure—Other (specify below);Paved Surface
May 7, 2019500 galEquipment Failure—Other (specify below)
Feb 12, 20192K galRoot Intrusion—Combined Storm Drain (Combined CS only);Drainage Channel;Other (specify below);Separate Storm Drain;Street/Curb and Gutter;Surface Water
Nov 21, 2018250 galEquipment Failure—Paved Surface;Separate Storm Drain;Street/Curb and Gutter
Jun 25, 20188K galEquipment Failure—Combined Storm Drain (Combined CS only);Paved Surface;Separate Storm Drain;Street/Curb and Gutter
Jun 19, 2018525 galRoot Intrusion—Other (specify below)
Jan 30, 2018200 galRoot Intrusion—Other (specify below);Paved Surface
Dec 29, 201720 galEquipment Failure—Other (specify below)
Dec 25, 20178K galRoot Intrusion—Other (specify below)
Nov 16, 2017280 galRoot Intrusion—Paved Surface;Separate Storm Drain;Street/Curb and Gutter
Nov 15, 2017250 galOther / Unknown—Unpaved surface
Nov 6, 201750 galRoot Intrusion—Other (specify below);Paved Surface
Oct 17, 2017500 galGrease / FOG—Other (specify below)
Oct 11, 201750 galEquipment Failure—Other (specify below);Paved Surface
Oct 2, 20178K galEquipment Failure—Other (specify below)
Sep 27, 20173K galRoot Intrusion—Other (specify below)
Jul 11, 20172K galRoot Intrusion—Other (specify below)
Jun 22, 2017450 galEquipment Failure—Other (specify below)
Apr 22, 201725 galGrease / FOG—Paved Surface;Separate Storm Drain
Jan 31, 2017300 galEquipment Failure—Other (specify below)
Nov 21, 2016350 galRoot Intrusion—Other (specify below)
Sep 7, 201680 galEquipment Failure—Paved Surface;Unpaved surface
Aug 9, 20161K galRoot Intrusion—Building or Structure;Drainage Channel
Jun 30, 2016100 galEquipment Failure—Other (specify below)
May 9, 2016200 galRoot Intrusion—Street/Curb and Gutter
Apr 18, 201615 galOther / Unknown—Paved Surface;Separate Storm Drain;Street/Curb and Gutter
Mar 7, 201620K galEquipment FailureYesPaved Surface;Separate Storm Drain
Feb 22, 201615 galEquipment Failure—Unpaved surface
Feb 18, 20162K galEquipment Failure—Other (specify below)
Jan 10, 2016200 galRoot Intrusion—Separate Storm Drain
Dec 17, 201550 galEquipment Failure—Other (specify below);Paved Surface
Dec 15, 2015120 galEquipment Failure—Other (specify below)
Dec 14, 2015200 galEquipment Failure—Other (specify below)
Nov 14, 2015150 galRoot Intrusion—Unpaved surface
Nov 1, 2015100 galRoot Intrusion—Separate Storm Drain;Street/Curb and Gutter
Oct 1, 201550 galRoot Intrusion—Building or Structure;Other (specify below);Unpaved surface
Sep 10, 20151K galRoot Intrusion—Other (specify below);Paved Surface;Unpaved surface
Jul 22, 201555 galRoot Intrusion—Building or Structure;Unpaved surface
Jul 8, 201520 galRoot Intrusion—Separate Storm Drain
Mar 3, 20151K galRoot Intrusion—Paved Surface;Separate Storm Drain
Mar 2, 2015140 galEquipment Failure—Other (specify below);Paved Surface;Unpaved surface
Feb 27, 2015400 galEquipment Failure—Other (specify below)
Feb 20, 201550 galEquipment Failure—Other (specify below);Paved Surface
Jan 25, 2015750 galRoot Intrusion—Paved Surface;Separate Storm Drain
Nov 24, 2014750 galOther / Unknown—Unpaved surface
Nov 21, 2014340 galRoot Intrusion—Other (specify below)
Oct 31, 201475 galRoot Intrusion—Separate Storm Drain;Street/Curb and Gutter
Jul 22, 2014150 galEquipment Failure—Other (specify below)
Jul 5, 2014900 galRoot Intrusion—Separate Storm Drain
May 19, 20143K galRoot Intrusion—Separate Storm Drain;Street/Curb and Gutter
May 5, 2014200 galRoot Intrusion—Paved Surface;Separate Storm Drain
May 2, 201415 galEquipment Failure—Unpaved surface
Apr 6, 20147K galRoot Intrusion—Paved Surface;Separate Storm Drain
Apr 5, 20143K galRoot Intrusion—Paved Surface;Separate Storm Drain
Apr 1, 2014750 galRoot Intrusion—Separate Storm Drain
Jan 29, 2014150 galRoot Intrusion—Other (specify below)
Aug 21, 2013600 galRoot Intrusion—Other (specify below)
Jul 10, 20135 galRoot Intrusion—Street/curb and gutter;Unpaved surface
Apr 30, 201360 galGrease / FOG—Other paved surface
Apr 10, 2013900 galRoot Intrusion—Separate storm drain;Street/curb and gutter
Apr 4, 2013250 galOther / Unknown—Street/curb and gutter
Feb 12, 201320 galRoot Intrusion—Separate storm drain;Street/curb and gutter
Nov 30, 201211 galOther / Unknown—Separate storm drain
Oct 4, 20128 galRoot Intrusion—Building or structure
Sep 28, 201275 galOther / Unknown—Other (specify below)
Sep 28, 2012100 galOther / Unknown—Other (specify below)
Sep 26, 2012200 galOther / UnknownYesBuilding or structure;Other paved surface;Separate storm drain;Street/curb and gutter
Sep 25, 20125 galRoot Intrusion—Other paved surface
Jun 25, 201225 galRoot Intrusion—Other paved surface;Separate storm drain
Apr 24, 2012450 galRoot Intrusion—Other (specify below)
Mar 30, 20122K galRoot Intrusion—Separate storm drain
Mar 23, 20123K galGrease / FOG—Other (specify below)
Nov 12, 201150 galRoot Intrusion—Other (specify below)
Jul 23, 201180 galOther / Unknown—Other (specify below)
Apr 15, 201150 galGrease / FOG—Other (specify below)
Feb 23, 2011750 galGrease / FOG—Other (specify below)
Feb 1, 2011100 galRoot Intrusion—Other paved surface
Jan 3, 2011200 galGrease / FOG—Other (specify below)
Nov 17, 2010750 galGrease / FOG—Other (specify below)
Oct 13, 2010100 galRoot Intrusion—Other (specify below)
May 11, 201050 galRoot Intrusion—Other (specify below)
Dec 19, 2009100 galGrease / FOG—Other (specify below)
Dec 15, 2009200 galOther / Unknown—Other (specify below)
Nov 19, 2009100 galRoot Intrusion—Street/curb and gutter
Jun 16, 200910 galGrease / FOG—Street/curb and gutter
May 1, 2009150 galRoot Intrusion—Street/curb and gutter
Apr 30, 2009200 galEquipment Failure—Street/curb and gutter
Apr 27, 2009100 galOther / Unknown—Street/curb and gutter
Apr 23, 200920 galRoot Intrusion—Street/curb and gutter
Mar 27, 2009100 galRoot Intrusion—Street/curb and gutter
Jan 7, 2009500 galOther / Unknown—Building or structure
Nov 11, 2008100 galRoot Intrusion—Storm drain;Street/curb and gutter;Other (specify below)
Nov 3, 20085K galOther / Unknown—Other (specify below);Separate storm drain
Oct 21, 2008200 galOther / Unknown—Other (specify below);Separate storm drain;Street/curb and gutter
Sep 26, 200875 galRoot Intrusion—Storm drain
Sep 25, 2008200 galRoot Intrusion—Other (specify below);Separate storm drain;Street/curb and gutter
Jul 21, 2008100 galRoot Intrusion—Other (specify below)
Jun 25, 2008225 galEquipment Failure—Other (specify below)
Jun 18, 200855 galGrease / FOG—Street/curb and gutter
Jun 10, 200880 galGrease / FOG—Other (specify below)
Jun 10, 200880 galGrease / FOG—Other (specify below)
Jun 10, 200880 galGrease / FOG—Other (specify below)
May 22, 200810 galRoot Intrusion—Building or structure
May 1, 2008150 galOther / Unknown—Storm drain;Other (specify below)
Apr 11, 2008100 galRoot Intrusion—Storm drain
Apr 7, 20081K galEquipment Failure—Beach
Mar 28, 200850 galRoot Intrusion—Other paved surface
Mar 24, 200820 galRoot Intrusion—Building or structure
Mar 18, 2008100 galGrease / FOG—Other (specify below)
Feb 12, 2008100 galGrease / FOG—Other (specify below);Separate storm drain;Street/curb and gutter
Feb 5, 200850 galEquipment Failure—Beach
Jan 26, 2008175 galRoot Intrusion—Other (specify below)
Jan 25, 200825 galRoot Intrusion—Other (specify below)
Jan 22, 2008250 galOther / Unknown—Other (specify below)
Jan 4, 200850 galGrease / FOG—Beach;Street/curb and gutter
Oct 15, 200750K galEquipment Failure—Beach;Building or structure
Sep 25, 200710 galRoot Intrusion—Other (specify below)
May 30, 2007100 galOther / Unknown—Other (specify below)
May 23, 2007400 galOther / Unknown—Other (specify below);Paved Surface;Other paved surface
May 14, 200710 galRoot Intrusion—Other (specify below)
May 1, 200725 galRoot Intrusion—Other (specify below)
Apr 5, 20071 galEquipment Failure—Other paved surface
Feb 26, 200775 galRoot Intrusion—Other (specify below)
Jan 22, 2007300 galOther / Unknown—Other (specify below)

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