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California · California (CIWQS)

Anaheim City

D
Frequently reaches water
Reported events
77
Total volume
92K gal
Reached waterways
36 (47%)
Reporting since
2007

What caused the overflows

Equipment Failure
26
Grease / FOG
21
Root Intrusion
15
Other / Unknown
12
Capacity Issue
3

Reported overflow events (showing 77 of 77)

DateVolumeCauseReached waterReceiving water
May 20, 20261K galGrease / FOG——
Jul 18, 20252K galEquipment Failure——
Jun 29, 202513K galEquipment FailureYesSanta Ana River
Jun 7, 2025500 galRoot Intrusion——
Jun 7, 2025500 galRoot Intrusion——
Jul 10, 202490 galEquipment Failure——
Mar 3, 202360 galGrease / FOGYesStreet/Curb and Gutter;Surface Water
Feb 10, 20235K galEquipment FailureYesSeparate Storm Drain
Jun 16, 2022160 galEquipment FailureYesSeparate Storm Drain;Street/Curb and Gutter
May 8, 202210 galGrease / FOG—Paved Surface;Street/Curb and Gutter
Nov 3, 2021500 galGrease / FOG—Separate Storm Drain
Aug 4, 2021680 galGrease / FOG—Separate Storm Drain;Street/Curb and Gutter
May 31, 2021640 galGrease / FOGYesSeparate Storm Drain
Apr 30, 2021720 galGrease / FOG—Separate Storm Drain
Feb 9, 2021120 galEquipment FailureYesSeparate Storm Drain
Feb 7, 202110 galRoot Intrusion—Street/Curb and Gutter
Feb 28, 2020540 galEquipment FailureYesSeparate Storm Drain
Nov 21, 2019850 galEquipment Failure—Surface Water
Oct 26, 2019500 galEquipment FailureYesSeparate Storm Drain
Oct 18, 2019350 galRoot Intrusion—Street/Curb and Gutter;Unpaved surface
Sep 3, 2019105 galEquipment Failure—Separate Storm Drain
Aug 17, 2019157 galGrease / FOGYesSeparate Storm Drain;Street/Curb and Gutter
May 13, 20192K galEquipment Failure—Unpaved surface
Oct 14, 20181K galGrease / FOGYesDrainage Channel;Paved Surface;Separate Storm Drain;Street/Curb and Gutter;Surface Water
Jul 11, 201810 galGrease / FOG—Drainage Channel;Other (specify below);Unpaved surface
Jun 28, 201830 galCapacity Issue—Street/Curb and Gutter
Oct 25, 201730 galRoot IntrusionYesPaved Surface;Separate Storm Drain;Street/Curb and Gutter
Sep 29, 20174K galGrease / FOGYesDrainage Channel;Separate Storm Drain;Street/Curb and Gutter
Sep 16, 2017840 galEquipment FailureYesSeparate Storm Drain;Street/Curb and Gutter
Sep 3, 2017450 galGrease / FOGYesSeparate Storm Drain;Surface Water
Nov 20, 2016720 galOther / UnknownYesSurface Water
Jun 25, 2016378 galEquipment Failure—Unpaved surface
May 5, 20161K galOther / UnknownYesSurface Water
Mar 17, 2016300 galEquipment Failure—Other (specify below)
Mar 9, 201613K galEquipment FailureYesDrainage Channel
Sep 18, 2015300 galEquipment FailureYesSeparate Storm Drain;Street/Curb and Gutter
Aug 8, 2015250 galRoot IntrusionYesSurface Water
Jul 15, 201515 galEquipment Failure—Other (specify below)
May 1, 201550 galEquipment Failure—Separate Storm Drain
Apr 8, 201516K galGrease / FOG—Other (specify below)
Sep 19, 20141K galEquipment Failure—Other (specify below);Separate Storm Drain;Unpaved surface
Jul 25, 20141K galRoot IntrusionYesSeparate Storm Drain
Apr 16, 20142K galEquipment FailureYesSurface Water
Oct 26, 2013240 galRoot Intrusion—Unpaved surface
Jul 17, 20131K galRoot IntrusionYesSeparate storm drain;Street/curb and gutter;Surface water
Jul 5, 2013350 galGrease / FOGYesSeparate storm drain;Street/curb and gutter;Surface water
Dec 24, 2012120 galOther / UnknownYesSeparate storm drain
Sep 1, 201250 galOther / UnknownYesSeparate storm drain;Surface water
Aug 4, 201220 galGrease / FOG—Separate storm drain;Street/curb and gutter
Jul 13, 20122 galCapacity Issue—Street/curb and gutter
Mar 20, 2012540 galOther / Unknown—Street/curb and gutter
Feb 20, 201220 galRoot Intrusion—Street/curb and gutter
Dec 27, 2011810 galOther / Unknown—Street/curb and gutter
Nov 21, 2011720 galGrease / FOG—Separate storm drain;Street/curb and gutter
Sep 18, 2011540 galOther / Unknown—Separate storm drain;Street/curb and gutter;Other (specify below)
Jun 16, 20111K galGrease / FOGYesSurface water
Nov 19, 201020 galCapacity Issue—Street/curb and gutter
Dec 23, 2009450 galRoot Intrusion—Storm drain;Street/curb and gutter;Surface water
Aug 10, 2009208 galRoot Intrusion—Storm drain;Street/curb and gutter
Feb 19, 2009445 galOther / UnknownYesSurface water
Oct 20, 2008780 galEquipment FailureYesOther (specify below)
Sep 7, 20084K galEquipment FailureYesSurface water
May 28, 2008200 galGrease / FOGYesSurface water
Mar 23, 2008150 galRoot Intrusion—Street/curb and gutter
Jan 30, 2008500 galGrease / FOGYesStorm drain;Surface water
Jan 20, 2008250 galOther / Unknown—Storm drain
Dec 1, 20072K galOther / UnknownYesStorm drain;Surface water
Nov 4, 2007405 galEquipment Failure—Storm drain
Oct 29, 20071K galGrease / FOG—Storm drain
Oct 15, 2007150 galOther / Unknown—Storm drain
Oct 12, 2007800 galGrease / FOGYesSurface water
Sep 19, 2007900 galEquipment Failure—Storm drain;Street/curb and gutter
Sep 13, 200710 galRoot Intrusion—Storm drain
Jul 22, 2007120 galEquipment Failure—Storm drain;Street/curb and gutter
Jul 18, 2007360 galEquipment FailureYesStorm drain;Street/curb and gutter;Surface water
Jul 6, 2007300 galRoot IntrusionYesStorm drain;Street/curb and gutter;Surface water
Jan 8, 2007320 galOther / UnknownYesStorm drain

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