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California · California (CIWQS)

Vallejo Flood & Wastewater District (formerly Vallejo San & Flood Control District)

B
Seldom reaches water
Reported events
377
Total volume
2.2M gal
Reached waterways
39 (10%)
Reporting since
2007

What caused the overflows

Root Intrusion
157
Other / Unknown
83
Equipment Failure
72
Grease / FOG
59
Rainfall / Flooding
3
Capacity Issue
3

Reported overflow events (showing 200 of 377)

DateVolumeCauseReached waterReceiving water
Sep 20, 20253K galRoot Intrusion——
Sep 3, 2025214 galEquipment Failure——
Jan 29, 20256K galRoot Intrusion——
Apr 10, 202489 galGrease / FOG——
Apr 8, 20243K galGrease / FOG——
Apr 5, 20241K galRoot IntrusionYesMare Island Strait
Mar 25, 202478 galGrease / FOG——
Mar 10, 20244K galGrease / FOG——
Feb 3, 2024588 galEquipment FailureYesMare Island Strait
Jan 23, 2024372 galEquipment Failure——
Nov 13, 202310K galEquipment Failure——
Aug 18, 2023163 galRoot Intrusion——
Aug 9, 2023650 galEquipment Failure——
Jun 30, 2023169 galEquipment Failure——
May 7, 20232K galEquipment Failure—Separate Storm Drain
Apr 9, 20233K galRoot IntrusionYesSeparate Storm Drain;Street/Curb and Gutter
Mar 20, 20231K galGrease / FOG—Street/Curb and Gutter
Feb 2, 2023125 galEquipment Failure—Other (specify below)
Jan 22, 20233K galOther / UnknownYesSeparate Storm Drain;Street/Curb and Gutter
Jan 12, 2023140 galEquipment Failure—Street/Curb and Gutter
Dec 31, 20224K galRainfall / FloodingYesSeparate Storm Drain
Nov 15, 20222K galEquipment Failure—Separate Storm Drain
Oct 14, 20224K galRoot Intrusion—Other (specify below);Unpaved surface
Aug 17, 20228 galEquipment Failure—Street/Curb and Gutter
Jul 18, 2022190 galGrease / FOG—Unpaved surface
Jul 6, 202211K galOther / Unknown—Paved Surface;Unpaved surface
Jun 4, 20226K galEquipment Failure—Unpaved surface
Feb 7, 202284 galRoot Intrusion—Unpaved surface
Dec 14, 20213K galOther / UnknownYesSeparate Storm Drain
Oct 26, 202190 galRoot Intrusion—Separate Storm Drain;Street/Curb and Gutter
Oct 18, 2021840 galEquipment Failure—Separate Storm Drain;Street/Curb and Gutter
Oct 16, 202154 galEquipment Failure—Street/Curb and Gutter
Oct 3, 202194 galRoot Intrusion—Street/Curb and Gutter
Jul 22, 2021690 galGrease / FOG—Paved Surface;Street/Curb and Gutter
Jul 14, 2021119 galRoot Intrusion—Street/Curb and Gutter
Jun 26, 20215K galEquipment FailureYesSeparate Storm Drain;Surface Water
Jun 17, 20214K galEquipment Failure—Separate Storm Drain;Street/Curb and Gutter
Jun 14, 202187 galGrease / FOG—Paved Surface;Street/Curb and Gutter
Jun 2, 2021100 galRoot Intrusion—Separate Storm Drain;Street/Curb and Gutter
May 17, 2021220 galRoot Intrusion—Street/Curb and Gutter
Mar 11, 202125 galRoot Intrusion—Separate Storm Drain
Feb 9, 202130 galRoot Intrusion—Separate Storm Drain
Jan 23, 202130 galEquipment Failure—Street/Curb and Gutter
Jan 9, 202143 galEquipment Failure—Paved Surface
Jan 9, 202122K galEquipment FailureYesSeparate Storm Drain;Street/Curb and Gutter;Unpaved surface
Jan 5, 2021112 galGrease / FOG—Building or Structure
Dec 19, 20201K galGrease / FOGYesSeparate Storm Drain
Dec 18, 2020313 galGrease / FOG—Street/Curb and Gutter
Nov 20, 202030 galRoot Intrusion—Separate Storm Drain
Oct 30, 2020900 galEquipment Failure—Unpaved surface
Oct 19, 202015 galEquipment Failure—Separate Storm Drain
Jun 10, 202061 galEquipment Failure—Separate Storm Drain
Jun 5, 202028 galEquipment Failure—Separate Storm Drain
Mar 19, 202062 galEquipment Failure—Building or Structure
Mar 17, 2020275 galRoot Intrusion—Street/Curb and Gutter;Unpaved surface
Mar 10, 202075 galEquipment Failure—Street/Curb and Gutter
Feb 7, 202023 galRoot Intrusion—Street/Curb and Gutter;Unpaved surface
Dec 31, 2019425 galGrease / FOGYesSeparate Storm Drain
Dec 29, 20191K galGrease / FOGYesSeparate Storm Drain
Nov 4, 201910 galRoot Intrusion—Street/Curb and Gutter
Aug 28, 201920 galEquipment Failure—Street/Curb and Gutter
May 28, 201984 galRoot Intrusion—Street/Curb and Gutter
Mar 10, 2019420 galRoot IntrusionYesSeparate Storm Drain
Feb 28, 2019175 galEquipment Failure—Separate Storm Drain;Street/Curb and Gutter
Feb 28, 2019150 galRoot Intrusion—Separate Storm Drain;Street/Curb and Gutter
Feb 21, 20198 galEquipment Failure—Separate Storm Drain;Street/Curb and Gutter
Feb 15, 2019600 galOther / UnknownYesSurface Water
Feb 14, 20192K galCapacity IssueYesSeparate Storm Drain
Jan 30, 2019200 galRoot Intrusion—Building or Structure;Unpaved surface
Jan 16, 2019561 galEquipment Failure—Paved Surface
Jan 14, 20193K galRoot IntrusionYesSeparate Storm Drain;Street/Curb and Gutter
Jan 4, 2019168 galRoot Intrusion—Building or Structure
Nov 17, 201870 galRoot Intrusion—Street/Curb and Gutter
Nov 15, 201823K galRoot IntrusionYesSurface Water
Nov 12, 201862 galRoot Intrusion—Building or Structure
Sep 4, 2018160 galRoot Intrusion—Unpaved surface
Aug 21, 20185 galEquipment Failure—Paved Surface
Aug 10, 20185 galRoot Intrusion—Unpaved surface
Jul 9, 2018296 galRoot Intrusion—Street/Curb and Gutter
Jun 18, 20183 galEquipment Failure—Building or Structure
Apr 18, 201818 galEquipment Failure—Paved Surface
Apr 6, 20184K galEquipment Failure—Building or Structure
Mar 8, 201810 galGrease / FOG—Street/Curb and Gutter
Mar 5, 2018200 galRoot IntrusionYesPaved Surface;Separate Storm Drain;Street/Curb and Gutter;Surface Water
Feb 2, 201863 galEquipment Failure—Street/Curb and Gutter
Feb 2, 20186 galRoot Intrusion—Street/Curb and Gutter
Jan 27, 20186 galRoot Intrusion—Building or Structure;Paved Surface
Jan 17, 20182K galEquipment Failure—Paved Surface;Separate Storm Drain
Dec 11, 2017900 galRoot IntrusionYesSeparate Storm Drain;Surface Water
Dec 10, 201760 galRoot Intrusion—Building or Structure;Street/Curb and Gutter
Nov 28, 201760 galRoot Intrusion—Paved Surface;Unpaved surface
Nov 25, 201730 galRoot Intrusion—Street/Curb and Gutter;Unpaved surface
Nov 21, 2017230 galRoot Intrusion—Street/Curb and Gutter
Nov 19, 201725 galRoot Intrusion—Street/Curb and Gutter
Nov 17, 201725 galEquipment Failure—Paved Surface;Unpaved surface
Nov 11, 201730 galRoot Intrusion—Unpaved surface
Oct 25, 201760 galRoot Intrusion—Street/Curb and Gutter
Oct 20, 2017425 galEquipment Failure—Paved Surface
Oct 16, 201725 galEquipment Failure—Paved Surface;Separate Storm Drain
Oct 10, 201735 galRoot Intrusion—Paved Surface;Street/Curb and Gutter
Sep 18, 2017100 galRoot Intrusion—Paved Surface
Aug 4, 2017100 galRoot Intrusion—Paved Surface
Jun 24, 2017100 galEquipment Failure—Street/Curb and Gutter
May 27, 201720 galRoot Intrusion—Building or Structure
May 14, 2017700 galEquipment Failure—Building or Structure;Unpaved surface
Jan 10, 20176K galCapacity IssueYesSeparate Storm Drain;Street/Curb and Gutter;Surface Water
Jan 10, 20171.9M galRainfall / FloodingYesDrainage Channel;Surface Water
Dec 15, 20164K galCapacity Issue—Unpaved surface
Dec 15, 2016300 galRoot IntrusionYesSeparate Storm Drain;Surface Water
Nov 26, 20162K galRoot IntrusionYesSeparate Storm Drain;Street/Curb and Gutter;Surface Water
Oct 20, 201630 galRoot Intrusion—Street/Curb and Gutter
Oct 8, 20162K galGrease / FOGYesPaved Surface;Separate Storm Drain;Street/Curb and Gutter
Oct 7, 20165 galOther / Unknown—Building or Structure
Sep 7, 2016189 galEquipment Failure—Other (specify below);Unpaved surface
Jul 9, 201613K galOther / UnknownYesPaved Surface;Separate Storm Drain;Street/Curb and Gutter;Surface Water;Unpaved surface
Jun 19, 201640 galEquipment Failure—Paved Surface;Street/Curb and Gutter
May 12, 20163 galEquipment FailureYesDrainage Channel
Apr 13, 201650 galRoot Intrusion—Separate Storm Drain;Street/Curb and Gutter
Feb 8, 2016100 galRoot IntrusionYesSeparate Storm Drain
Jan 18, 2016100 galRoot Intrusion—Other (specify below)
Dec 27, 201525 galOther / Unknown—Street/Curb and Gutter
Dec 18, 20155 galRoot Intrusion—Street/Curb and Gutter
Dec 9, 2015100 galRoot Intrusion—Street/Curb and Gutter
Nov 23, 20155 galOther / Unknown—Street/Curb and Gutter
Nov 20, 2015177 galRoot Intrusion—Street/Curb and Gutter
Oct 11, 2015915 galRoot Intrusion—Separate Storm Drain
Oct 10, 20154K galEquipment Failure—Separate Storm Drain;Street/Curb and Gutter
Oct 1, 2015300 galRoot Intrusion—Separate Storm Drain;Street/Curb and Gutter
Sep 24, 201550 galRoot Intrusion—Paved Surface;Separate Storm Drain;Street/Curb and Gutter
Jul 6, 201523 galRoot Intrusion—Street/Curb and Gutter;Unpaved surface
May 6, 2015100 galEquipment Failure—Paved Surface;Separate Storm Drain;Street/Curb and Gutter
May 5, 2015325 galEquipment Failure—Street/Curb and Gutter
Mar 30, 2015150 galRoot IntrusionYesSeparate Storm Drain
Mar 20, 20155 galRoot Intrusion—Street/Curb and Gutter
Mar 16, 201550 galOther / Unknown—Separate Storm Drain
Mar 7, 2015100 galRoot Intrusion—Separate Storm Drain
Jan 13, 201584 galRoot Intrusion—Paved Surface
Jan 10, 201550 galGrease / FOG—Building or Structure
Jan 4, 2015600 galRoot Intrusion—Unpaved surface
Jan 3, 20156K galEquipment Failure—Building or Structure;Street/Curb and Gutter;Unpaved surface
Dec 28, 201470 galRoot Intrusion—Unpaved surface
Dec 12, 2014750 galOther / Unknown—Unpaved surface
Dec 11, 201424K galRainfall / FloodingYesSeparate Storm Drain
Dec 11, 2014100 galOther / Unknown—Unpaved surface
Dec 11, 2014600 galOther / UnknownYesSurface Water
Dec 11, 201420 galOther / UnknownYesSeparate Storm Drain
Oct 28, 201450 galRoot Intrusion—Separate Storm Drain
Oct 21, 2014100 galRoot Intrusion—Other (specify below)
Oct 7, 20141K galRoot IntrusionYesSurface Water
Sep 20, 201410 galOther / Unknown—Street/Curb and Gutter
Aug 5, 2014200 galEquipment Failure—Separate Storm Drain;Street/Curb and Gutter
Jul 22, 2014100 galEquipment Failure—Separate Storm Drain
Jul 13, 2014100 galRoot Intrusion—Unpaved surface
Jul 9, 20146K galOther / UnknownYesSurface Water
Jun 4, 201450 galRoot Intrusion—Street/Curb and Gutter;Unpaved surface
May 30, 201420 galEquipment Failure—Other (specify below)
Apr 14, 201450 galEquipment Failure—Unpaved surface
Feb 22, 201470 galOther / Unknown—Unpaved surface
Feb 13, 20148K galOther / UnknownYesOther (specify below)
Jan 29, 20142K galGrease / FOGYesDrainage Channel
Dec 17, 2013100 galRoot Intrusion—Separate Storm Drain
Dec 12, 2013150 galEquipment Failure—Unpaved surface
Nov 22, 201350 galRoot Intrusion—Street/Curb and Gutter
Nov 7, 2013450 galGrease / FOG—Unpaved surface
Oct 29, 201348 galRoot Intrusion—Street/Curb and Gutter
Sep 23, 201337 galOther / Unknown—Street/Curb and Gutter
Aug 30, 201360 galGrease / FOG—Separate Storm Drain;Street/Curb and Gutter
Aug 5, 2013180 galOther / Unknown—Paved Surface;Separate Storm Drain
Jul 2, 2013268 galOther / Unknown—Other paved surface;Separate storm drain
May 31, 201320 galRoot Intrusion—Street/curb and gutter
May 30, 201310 galOther / Unknown—Street/curb and gutter
May 20, 201320 galOther / Unknown—Street/curb and gutter
May 7, 2013100 galRoot Intrusion—Unpaved surface
Mar 23, 201330 galRoot Intrusion—Separate storm drain;Street/curb and gutter
Feb 3, 2013100 galRoot Intrusion—Unpaved surface
Jan 26, 20135 galEquipment Failure—Street/curb and gutter
Jan 19, 201360 galGrease / FOG—Unpaved surface
Dec 20, 201220 galRoot Intrusion—Street/curb and gutter
Dec 18, 201250 galRoot Intrusion—Separate storm drain
Nov 26, 2012675 galRoot Intrusion—Separate storm drain;Street/curb and gutter
Oct 23, 20125 galEquipment Failure—Building or structure
Oct 16, 2012150 galOther / Unknown—Unpaved surface
Sep 19, 201220 galOther / Unknown—Street/curb and gutter;Unpaved surface
Sep 18, 2012150 galRoot Intrusion—Unpaved surface
Sep 16, 201225 galGrease / FOG—Building or structure
Aug 25, 20122 galRoot Intrusion—Separate storm drain
Jul 20, 20125K galRoot Intrusion—Unpaved surface;Other (specify below)
Jul 7, 201267 galRoot Intrusion—Separate storm drain;Street/curb and gutter
Jun 16, 20122K galEquipment Failure—Separate storm drain
Apr 20, 201220 galRoot Intrusion—Unpaved surface
Apr 18, 201225 galGrease / FOG—Street/curb and gutter
Apr 12, 2012100 galRoot Intrusion—Separate storm drain;Street/curb and gutter
Feb 23, 20125 galRoot Intrusion—Unpaved surface
Feb 18, 201250 galRoot Intrusion—Street/curb and gutter
Jan 17, 201210 galOther / Unknown—Unpaved surface
Jan 10, 201210 galOther / Unknown—Street/curb and gutter
Dec 31, 201110 galOther / Unknown—Street/curb and gutter
Dec 29, 2011150 galOther / Unknown—Unpaved surface
Dec 11, 201120 galRoot Intrusion—Street/curb and gutter
Nov 25, 201120 galGrease / FOG—Other paved surface;Separate storm drain

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