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California · California (CIWQS)

San Diego County Dept of Public Works

C
Often reaches water
Reported events
125
Total volume
1.4M gal
Reached waterways
20 (16%)
Reporting since
2007

What caused the overflows

Root Intrusion
53
Equipment Failure
31
Other / Unknown
26
Rainfall / Flooding
8
Grease / FOG
7

Reported overflow events (showing 125 of 125)

DateVolumeCauseReached waterReceiving water
Apr 30, 202616K galEquipment FailureYesChocolate Creek
Dec 29, 2025208 galRoot Intrusion——
Sep 29, 20255K galEquipment Failure——
Jun 7, 2025765 galGrease / FOG——
Jun 5, 2025875 galEquipment Failure——
May 18, 2025260 galRoot Intrusion——
Apr 27, 2025446 galRoot Intrusion——
Dec 8, 20246K galEquipment FailureYesAlpine Creek
Oct 31, 20241K galRoot Intrusion——
May 14, 2024105 galRoot Intrusion——
Feb 1, 2024740 galRoot Intrusion——
Jan 22, 202411K galRainfall / Flooding——
Jan 22, 202447K galRainfall / FloodingYesSweetwater River
Jan 22, 20244K galOther / Unknown——
Jan 2, 20241K galRoot Intrusion——
Jul 16, 2023980 galRoot IntrusionYesAlpine Creek
Jan 16, 202359K galRainfall / FloodingYesSeparate Storm Drain;Surface Water
Jan 16, 20232K galRainfall / FloodingYesSeparate Storm Drain
Jan 16, 20236K galRainfall / FloodingYesSeparate Storm Drain;Street/Curb and Gutter
Nov 29, 202235 galRoot Intrusion—Unpaved surface
Nov 10, 202278K galEquipment Failure—Drainage Channel;Unpaved surface
Nov 1, 20222K galEquipment Failure—Separate Storm Drain;Street/Curb and Gutter
Mar 31, 202298 galRoot Intrusion—Paved Surface
Mar 31, 2022720 galEquipment Failure—Paved Surface;Unpaved surface
Mar 18, 202126K galOther / Unknown—Separate Storm Drain
Dec 20, 202062 galEquipment Failure—Unpaved surface
Dec 20, 202062 galEquipment Failure—Unpaved surface
Sep 28, 2020171 galEquipment Failure—Unpaved surface
Apr 10, 202039K galRainfall / FloodingYesSurface Water
Apr 10, 202017K galRainfall / FloodingYesSurface Water
Mar 21, 202039 galEquipment Failure—Paved Surface;Street/Curb and Gutter
Feb 1, 2020840 galEquipment Failure—Unpaved surface
Jan 3, 202025 galRoot Intrusion—Unpaved surface
Sep 20, 2019225 galRoot Intrusion—Building or Structure;Unpaved surface
Aug 6, 2019300 galEquipment Failure—Separate Storm Drain
Feb 16, 2019100 galRoot Intrusion—Unpaved surface
Feb 8, 2019130 galEquipment Failure—Other (specify below)
Jan 4, 20193K galEquipment Failure—Other (specify below)
Nov 12, 20183K galEquipment Failure—Other (specify below)
Sep 22, 20184K galEquipment FailureYesSeparate Storm Drain
Jul 30, 2018240 galRoot Intrusion—Drainage Channel
Jul 21, 201817K galEquipment FailureYesDrainage Channel;Surface Water
May 27, 2018450 galRoot Intrusion—Unpaved surface
Mar 24, 201820 galOther / Unknown—Building or Structure
Dec 10, 20173K galEquipment Failure—Other (specify below)
Dec 3, 2017250 galRoot Intrusion—Unpaved surface
Nov 7, 2017955 galRoot Intrusion—Building or Structure;Unpaved surface
Apr 10, 2017200 galEquipment Failure—Building or Structure;Drainage Channel
Mar 9, 2017200 galOther / Unknown—Separate Storm Drain
Mar 6, 2017175 galRoot Intrusion—Separate Storm Drain
Feb 28, 2017900K galOther / UnknownYesDrainage Channel;Surface Water
Feb 27, 20179K galRainfall / FloodingYesBuilding or Structure;Other (specify below);Separate Storm Drain;Surface Water
Jan 31, 201710 galRoot Intrusion—Unpaved surface
Jan 23, 20174K galRoot IntrusionYesDrainage Channel
Jan 1, 2017500 galRoot Intrusion—Unpaved surface
Sep 1, 2016981 galOther / Unknown—Unpaved surface
Jul 19, 2016100 galRoot Intrusion—Unpaved surface
Jun 30, 2016450 galEquipment Failure—Unpaved surface
May 28, 2016650 galRoot Intrusion—Unpaved surface
Feb 4, 2016500 galOther / Unknown—Building or Structure
Jan 25, 201630 galRoot Intrusion—Unpaved surface
Jan 8, 2016540 galRoot Intrusion—Unpaved surface
Jan 3, 201690 galRoot Intrusion—Unpaved surface
Jul 16, 2015350 galRoot Intrusion—Unpaved surface
May 28, 2015200 galGrease / FOG—Unpaved surface
May 5, 2015500 galRoot Intrusion—Separate Storm Drain
Apr 12, 2015488 galRoot Intrusion—Unpaved surface
Mar 28, 2015430 galRoot Intrusion—Drainage Channel
Jan 18, 2015180 galRoot Intrusion—Unpaved surface
Nov 8, 2014100 galRoot Intrusion—Paved Surface;Unpaved surface
Oct 24, 201450 galRoot Intrusion—Unpaved surface
Sep 23, 2014700 galRoot Intrusion—Street/Curb and Gutter;Unpaved surface
Aug 28, 2014300 galRoot Intrusion—Separate Storm Drain
Aug 27, 2014750 galRoot Intrusion—Unpaved surface
Aug 25, 20145 galGrease / FOG—Paved Surface
Jun 28, 2014600 galRoot Intrusion—Unpaved surface
Jun 5, 2014600 galRoot Intrusion—Paved Surface
May 1, 2014100 galRoot Intrusion—Paved Surface;Street/Curb and Gutter
Apr 22, 20141K galRoot Intrusion—Paved Surface;Unpaved surface
Apr 3, 20141K galEquipment Failure—Street/Curb and Gutter;Unpaved surface
Mar 23, 20145K galEquipment Failure—Paved Surface;Separate Storm Drain;Street/Curb and Gutter
Mar 2, 201470 galRoot Intrusion—Street/Curb and Gutter
Jan 14, 2014750 galRoot Intrusion—Unpaved surface
Nov 30, 201360 galOther / Unknown—Paved Surface
Oct 29, 201320 galRoot Intrusion—Unpaved surface
Oct 22, 2013130 galRoot Intrusion—Street/Curb and Gutter;Unpaved surface
Oct 7, 20132K galEquipment Failure—Unpaved surface
Sep 30, 2013400 galRoot Intrusion—Unpaved surface
Sep 19, 2013750 galRoot Intrusion—Unpaved surface
Aug 12, 20131K galOther / Unknown—Separate storm drain;Street/curb and gutter
Jul 25, 2013375 galOther / Unknown—Other paved surface
May 22, 2013875 galEquipment Failure—Separate storm drain
Apr 9, 20131K galRoot Intrusion—Unpaved surface
Mar 18, 2013150 galGrease / FOG—Other paved surface;Separate storm drain;Unpaved surface
Jul 13, 20123K galRoot Intrusion—Unpaved surface
Mar 13, 2012500 galOther / Unknown—Street/curb and gutter;Unpaved surface
Jan 30, 2012180 galRoot Intrusion—Unpaved surface
Nov 4, 2011200 galRoot Intrusion—Street/curb and gutter;Other (specify below)
Oct 11, 2011900 galGrease / FOG—Building or structure;Unpaved surface
Feb 13, 20112K galOther / Unknown—Separate storm drain;Unpaved surface
Dec 21, 201090K galOther / UnknownYesSurface water
Dec 21, 201027K galOther / Unknown—Separate storm drain
Dec 9, 2010235 galOther / Unknown—Other paved surface
Nov 29, 2010225 galGrease / FOG—Other paved surface
Oct 6, 20105K galOther / UnknownYesUnpaved surface
Jan 28, 2010600 galOther / Unknown—Other paved surface
Jan 23, 2010265 galOther / Unknown—Storm drain;Unpaved surface
Jan 22, 2010300 galOther / Unknown—Storm drain;Unpaved surface
Jan 1, 2010900 galOther / Unknown—Storm drain;Unpaved surface
Nov 27, 2009900 galOther / Unknown—Storm drain;Unpaved surface
Sep 5, 2009500 galRoot Intrusion—Separate storm drain
Jul 22, 200950 galOther / Unknown—Unpaved surface
May 15, 20093K galOther / UnknownYesSeparate storm drain;Unpaved surface
May 3, 200950 galEquipment Failure—Building or structure
Apr 30, 20092K galOther / UnknownYesUnpaved surface
Apr 23, 2009450 galEquipment Failure—Other paved surface;Storm drain
Dec 3, 2008165 galRoot Intrusion—Separate storm drain;Unpaved surface
Nov 28, 2008560 galOther / Unknown—Separate storm drain
Jun 15, 200850 galGrease / FOG—Storm drain
Feb 16, 2008100 galOther / UnknownYesUnpaved surface
Nov 3, 2007850 galEquipment Failure—Unpaved surface
Oct 27, 2007360 galEquipment FailureYesOther paved surface;Separate storm drain;Street/curb and gutter;Unpaved surface
Jul 14, 2007100 galEquipment Failure—Unpaved surface
May 21, 2007945 galEquipment Failure—Building or structure;Other paved surface;Unpaved surface
Feb 22, 20076K galRoot Intrusion—Storm drain

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