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California · California (CIWQS)

Oro Loma Sanitary District

D
Frequently reaches water
Reported events
58
Total volume
306K gal
Reached waterways
19 (33%)
Reporting since
2007

What caused the overflows

Equipment Failure
25
Other / Unknown
19
Root Intrusion
6
Capacity Issue
6
Rainfall / Flooding
2

Reported overflow events (showing 58 of 58)

DateVolumeCauseReached waterReceiving water
Oct 10, 2025270 galRoot Intrusion——
Sep 7, 2025425 galRoot IntrusionYesAlameda County Flood Control Improved Channel
Oct 29, 20241K galOther / UnknownYesAlameda County SD Channel
May 5, 20245K galEquipment FailureYesAlameda County Flood Control Channel
Dec 16, 2023315 galOther / UnknownYesAlameda County Flood Control Channel
Dec 16, 2023315 galOther / UnknownYesAlameda County Flood Control Channel
May 9, 2023115 galOther / Unknown—Unpaved surface
Dec 31, 20223K galCapacity IssueYesSeparate Storm Drain
Dec 31, 202210K galRainfall / Flooding—Paved Surface
Dec 31, 2022132K galCapacity IssueYesSeparate Storm Drain
Dec 31, 202240K galCapacity IssueYesSeparate Storm Drain
Dec 31, 202225K galCapacity IssueYesSeparate Storm Drain
Dec 31, 202212K galCapacity IssueYesSeparate Storm Drain
Dec 31, 202227K galCapacity IssueYesSeparate Storm Drain
Dec 28, 2022360 galEquipment Failure—Paved Surface
Oct 8, 20222K galEquipment Failure—Unpaved surface
Jun 10, 2021460 galEquipment FailureYesSeparate Storm Drain
May 3, 202184 galEquipment FailureYesUnpaved surface
Apr 4, 20214K galEquipment FailureYesDrainage Channel
Sep 15, 20207K galRoot IntrusionYesDrainage Channel
Apr 9, 20203 galOther / Unknown—Street/Curb and Gutter
Nov 18, 201910 galEquipment Failure—Paved Surface
Feb 22, 20192K galEquipment FailureYesDrainage Channel;Separate Storm Drain;Street/Curb and Gutter
Dec 17, 2018258 galEquipment Failure—Separate Storm Drain;Street/Curb and Gutter
Apr 24, 20187 galRoot Intrusion—Street/Curb and Gutter
Mar 3, 2018650 galEquipment FailureYesDrainage Channel
Feb 28, 201810 galOther / Unknown—Paved Surface;Street/Curb and Gutter
Nov 14, 201725 galEquipment Failure—Street/Curb and Gutter
Jun 9, 2017850 galEquipment Failure—Separate Storm Drain;Street/Curb and Gutter
May 30, 20171K galOther / Unknown—Separate Storm Drain
Feb 20, 20174K galRainfall / FloodingYesDrainage Channel;Street/Curb and Gutter
Jan 26, 201725 galOther / Unknown—Separate Storm Drain;Street/Curb and Gutter
Nov 5, 20165 galEquipment Failure—Paved Surface
May 25, 20162K galEquipment FailureYesSurface Water
May 17, 201525 galEquipment Failure—Street/Curb and Gutter
Mar 27, 2015310 galEquipment Failure—Separate Storm Drain;Street/Curb and Gutter
Jan 17, 201515 galOther / Unknown—Paved Surface;Separate Storm Drain;Street/Curb and Gutter
Nov 23, 2014349 galEquipment Failure—Separate Storm Drain
Aug 10, 2014341 galEquipment Failure—Street/Curb and Gutter
Jul 16, 20147K galEquipment Failure—Street/Curb and Gutter
Oct 25, 2013270 galEquipment Failure—Unpaved surface
Apr 20, 20128K galOther / Unknown—Other paved surface;Separate storm drain
Oct 15, 201160 galEquipment Failure—Street/curb and gutter
May 8, 20111K galEquipment Failure—Separate storm drain;Street/curb and gutter
Apr 26, 20115 galRoot Intrusion—Street/curb and gutter
Jan 19, 20112K galOther / Unknown—Unpaved surface;Other (specify below)
Oct 23, 2009590 galOther / Unknown—Storm drain;Street/curb and gutter
Oct 5, 20092 galOther / Unknown—Street/curb and gutter
Jul 30, 20093 galOther / Unknown—Other paved surface
Mar 30, 200950 galOther / Unknown—Street/curb and gutter
Mar 29, 2009600 galOther / Unknown—Storm drain;Street/curb and gutter
Jan 5, 20094K galOther / Unknown—Unpaved surface
Jul 30, 2008400 galEquipment Failure—Storm drain;Street/curb and gutter
Jul 2, 2008225 galEquipment Failure—Storm drain;Street/curb and gutter
Apr 28, 200810 galRoot Intrusion—Unpaved surface
Sep 30, 200710 galOther / Unknown—Street/curb and gutter;Unpaved surface
Aug 8, 2007300 galOther / Unknown—Street/curb and gutter;Unpaved surface
Aug 7, 200710 galEquipment Failure—Unpaved surface

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