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California · California (CIWQS)

Novato Sanitary District

D
Frequently reaches water
Reported events
205
Total volume
975K gal
Reached waterways
73 (36%)
Reporting since
2007

What caused the overflows

Root Intrusion
98
Other / Unknown
35
Grease / FOG
31
Equipment Failure
28
Capacity Issue
10
Rainfall / Flooding
3

Reported overflow events (showing 200 of 205)

DateVolumeCauseReached waterReceiving water
Feb 21, 2025960 galEquipment FailureYesa private pond located on a horse ranch
Feb 4, 2025256 galEquipment Failure——
Feb 4, 20253K galCapacity IssueYesVinyeard creek.
Nov 16, 2024159 galRoot Intrusion——
Jul 19, 2024561 galOther / Unknown——
Feb 12, 2024365 galRoot Intrusion——
Feb 8, 20241K galCapacity Issue——
Jan 27, 20241K galGrease / FOGYesunknow drainage/creek, tributary to Novato Creek.
Apr 29, 20231 galEquipment Failure—Unpaved surface
Mar 6, 2023540 galRoot IntrusionYesSurface Water
Jan 26, 2023201 galRoot Intrusion—Paved Surface
Jan 19, 202348 galRoot IntrusionYesDrainage Channel;Separate Storm Drain;Surface Water
Jan 14, 202329K galCapacity IssueYesDrainage Channel;Surface Water
Nov 6, 20229K galOther / Unknown—Unpaved surface
Oct 9, 202230 galRoot Intrusion—Paved Surface
Aug 21, 202255 galRoot Intrusion—Separate Storm Drain;Street/Curb and Gutter
Jul 25, 2022355 galRoot IntrusionYesSeparate Storm Drain;Street/Curb and Gutter
May 25, 2022300 galGrease / FOG—Separate Storm Drain;Street/Curb and Gutter
Apr 13, 2022345 galEquipment FailureYesSeparate Storm Drain;Street/Curb and Gutter;Unpaved surface
Dec 2, 2021110 galRoot Intrusion—Paved Surface;Separate Storm Drain;Street/Curb and Gutter
Oct 24, 20211K galRoot IntrusionYesSurface Water
Aug 17, 202110 galEquipment Failure—Unpaved surface
Mar 24, 2021528 galEquipment Failure—Paved Surface;Separate Storm Drain;Street/Curb and Gutter
Mar 17, 2021360 galRoot IntrusionYesSeparate Storm Drain;Street/Curb and Gutter
Dec 6, 2020380 galGrease / FOG—Separate Storm Drain;Street/Curb and Gutter
Dec 11, 201910K galRoot Intrusion—Building or Structure;Unpaved surface
Sep 23, 2018750 galEquipment Failure—Unpaved surface
Nov 16, 20174K galEquipment FailureYesSeparate Storm Drain;Street/Curb and Gutter;Surface Water
Jul 26, 20174K galEquipment FailureYesSurface Water;Unpaved surface
Jul 7, 2017776 galGrease / FOG—Paved Surface;Separate Storm Drain;Unpaved surface
Jan 8, 201790 galRainfall / Flooding—Unpaved surface
Oct 21, 20168K galGrease / FOGYesPaved Surface;Separate Storm Drain;Street/Curb and Gutter;Surface Water;Unpaved surface
Sep 29, 201665 galGrease / FOG—Paved Surface;Separate Storm Drain;Street/Curb and Gutter
Jun 25, 2016540 galOther / UnknownYesOther (specify below);Separate Storm Drain;Street/Curb and Gutter;Surface Water
Apr 2, 201620 galEquipment Failure—Street/Curb and Gutter
Mar 31, 201640 galRoot Intrusion—Separate Storm Drain;Street/Curb and Gutter
Mar 29, 2016378 galOther / Unknown—Building or Structure;Paved Surface;Separate Storm Drain
Mar 23, 201640 galOther / Unknown—Paved Surface
Mar 21, 2016650 galOther / Unknown—Building or Structure
Mar 2, 20161K galRoot Intrusion—Unpaved surface
Feb 23, 2016290K galOther / Unknown—Unpaved surface
Feb 3, 2016330 galOther / Unknown—Unpaved surface
Jan 28, 2016270 galRoot IntrusionYesSeparate Storm Drain;Surface Water
Jan 26, 20162 galOther / Unknown—Unpaved surface
Jan 19, 2016150 galOther / Unknown—Unpaved surface
Jan 7, 201660 galEquipment Failure—Unpaved surface
Dec 3, 20157 galOther / Unknown—Paved Surface;Street/Curb and Gutter
Nov 6, 2015936 galRoot Intrusion—Paved Surface;Separate Storm Drain;Street/Curb and Gutter;Unpaved surface
Sep 21, 20158 galRoot Intrusion—Building or Structure;Unpaved surface
Aug 5, 201515 galOther / Unknown—Unpaved surface
May 3, 20155 galRoot Intrusion—Unpaved surface
Mar 9, 201541 galRoot IntrusionYesPaved Surface;Separate Storm Drain;Street/Curb and Gutter;Surface Water
Mar 8, 20152K galRoot IntrusionYesDrainage Channel;Paved Surface;Separate Storm Drain;Street/Curb and Gutter;Surface Water
Mar 4, 201512 galEquipment Failure—Paved Surface
Feb 13, 20152K galRoot IntrusionYesSeparate Storm Drain;Surface Water;Unpaved surface
Feb 10, 2015452 galRoot IntrusionYesPaved Surface;Separate Storm Drain;Street/Curb and Gutter;Unpaved surface
Feb 10, 201570 galRoot IntrusionYesPaved Surface;Separate Storm Drain;Street/Curb and Gutter;Surface Water
Feb 6, 201525 galEquipment Failure—Unpaved surface
Jan 31, 2015126 galRoot Intrusion—Paved Surface;Unpaved surface
Dec 25, 2014528 galEquipment FailureYesPaved Surface;Separate Storm Drain;Street/Curb and Gutter;Surface Water
Dec 11, 20142K galRainfall / FloodingYesPaved Surface;Separate Storm Drain;Street/Curb and Gutter;Surface Water
Dec 11, 2014355 galRainfall / FloodingYesDrainage Channel;Surface Water;Unpaved surface
Dec 3, 20145K galOther / UnknownYesPaved Surface;Separate Storm Drain;Street/Curb and Gutter;Surface Water
Dec 3, 2014560 galEquipment FailureYesSurface Water;Unpaved surface
Dec 3, 201426K galOther / UnknownYesPaved Surface;Separate Storm Drain;Street/Curb and Gutter;Surface Water
Oct 20, 20145 galEquipment Failure—Street/Curb and Gutter
Jun 9, 2014235 galEquipment Failure—Paved Surface;Separate Storm Drain
May 20, 201430 galRoot Intrusion—Separate Storm Drain;Street/Curb and Gutter
May 15, 201420 galEquipment Failure—Street/Curb and Gutter
Mar 30, 2014180 galRoot IntrusionYesSurface Water
Dec 14, 20136K galRoot IntrusionYesSeparate Storm Drain;Street/Curb and Gutter;Surface Water
Oct 2, 20131K galRoot IntrusionYesDrainage Channel
Sep 13, 2013312 galRoot IntrusionYesSeparate Storm Drain;Surface Water
Aug 10, 201350 galRoot Intrusion—Street/curb and gutter;Unpaved surface
Jul 7, 201310 galRoot Intrusion—Unpaved surface
Jun 27, 20131 galOther / Unknown—Street/curb and gutter
Jun 10, 20131K galRoot IntrusionYesSeparate storm drain;Street/curb and gutter;Surface water
May 17, 2013158 galOther / Unknown—Street/curb and gutter
Jan 28, 20131K galEquipment Failure—Unpaved surface
Jan 12, 20131K galRoot IntrusionYesSurface water
Dec 22, 20123K galRoot IntrusionYesSurface water
Dec 19, 2012204 galRoot IntrusionYesSurface water
Dec 10, 201281 galOther / Unknown—Street/curb and gutter
Oct 22, 20123K galRoot IntrusionYesSurface water
Sep 3, 20126K galOther / UnknownYesSeparate storm drain;Street/curb and gutter;Surface water;Unpaved surface
Aug 4, 20125 galRoot Intrusion—Street/curb and gutter
Jul 26, 20128K galRoot Intrusion—Separate storm drain;Unpaved surface
Jul 26, 201210 galOther / Unknown—Street/curb and gutter
Jul 13, 20123K galRoot Intrusion—Separate storm drain
May 18, 201223 galRoot Intrusion—Unpaved surface
May 9, 20125 galOther / Unknown—Street/curb and gutter
May 1, 201240 galGrease / FOG—Separate storm drain;Street/curb and gutter
Apr 11, 201298 galRoot Intrusion—Unpaved surface
Apr 6, 2012218 galRoot Intrusion—Unpaved surface
Mar 30, 2012120 galRoot Intrusion—Other paved surface;Unpaved surface
Mar 8, 2012278 galRoot Intrusion—Unpaved surface
Feb 2, 201226 galRoot Intrusion—Separate storm drain
Jan 25, 201275 galOther / UnknownYesSurface water
Dec 31, 20117K galRoot IntrusionYesSeparate storm drain;Street/curb and gutter;Surface water
Dec 30, 2011375 galGrease / FOGYesSeparate storm drain;Street/curb and gutter;Surface water
Dec 26, 20118K galEquipment FailureYesSeparate storm drain;Street/curb and gutter;Surface water;Unpaved surface
Dec 9, 2011245 galRoot Intrusion—Separate storm drain;Street/curb and gutter
Nov 21, 20112 galRoot Intrusion—Street/curb and gutter
Sep 18, 2011600 galEquipment Failure—Separate storm drain;Street/curb and gutter
Aug 5, 201179 galGrease / FOGYesSeparate storm drain;Street/curb and gutter
Jul 26, 201138 galRoot Intrusion—Separate storm drain;Street/curb and gutter
Jul 11, 20115 galRoot Intrusion—Street/curb and gutter
Jul 2, 2011946 galRoot IntrusionYesSeparate storm drain;Unpaved surface
Apr 11, 201160 galRoot Intrusion—Separate storm drain
Mar 3, 20112K galRoot IntrusionYesSeparate storm drain;Surface water
Feb 15, 201153 galGrease / FOG—Unpaved surface
Jan 1, 20113K galGrease / FOGYesSurface water
Nov 28, 2010240 galGrease / FOG—Unpaved surface
Nov 25, 20103K galGrease / FOGYesSeparate storm drain;Unpaved surface
Nov 4, 2010700 galRoot IntrusionYesSeparate storm drain;Street/curb and gutter;Surface water
Oct 31, 201019K galEquipment FailureYesOther (specify below)
Oct 27, 2010150 galOther / Unknown—Separate storm drain;Street/curb and gutter
Oct 27, 201050 galOther / Unknown—Separate storm drain;Street/curb and gutter
Oct 24, 2010130 galRoot IntrusionYesSurface water
Sep 27, 2010417 galEquipment Failure—Separate storm drain;Other (specify below)
Sep 22, 20102K galRoot IntrusionYesStorm drain;Street/curb and gutter;Surface water
Sep 10, 201025 galGrease / FOG—Unpaved surface
Aug 25, 2010315 galGrease / FOG—Storm drain;Street/curb and gutter
Aug 12, 20102K galRoot Intrusion—Storm drain;Street/curb and gutter;Unpaved surface
Jul 23, 201025 galRoot Intrusion—Unpaved surface
Jul 8, 201060 galGrease / FOG—Storm drain;Street/curb and gutter
Jun 22, 201050 galEquipment Failure—Unpaved surface
Jun 6, 201010K galRoot IntrusionYesStorm drain;Street/curb and gutter;Unpaved surface
May 24, 20105 galGrease / FOG—Street/curb and gutter
May 20, 20105 galRoot Intrusion—Street/curb and gutter
May 11, 201025 galRoot Intrusion—Street/curb and gutter;Unpaved surface
Apr 1, 201050 galOther / Unknown—Street/curb and gutter
Mar 27, 201025 galOther / Unknown—Unpaved surface
Mar 23, 201084 galRoot IntrusionYesSurface water
Feb 28, 2010500 galRoot IntrusionYesStorm drain;Street/curb and gutter;Surface water
Feb 25, 20107K galRoot IntrusionYesStorm drain;Street/curb and gutter;Surface water;Unpaved surface
Feb 4, 20102K galRoot IntrusionYesSurface water
Jan 25, 2010500 galRoot IntrusionYesStorm drain;Street/curb and gutter;Surface water
Jan 20, 2010675 galCapacity IssueYesStorm drain;Street/curb and gutter;Surface water
Jan 20, 20105K galCapacity IssueYesSeparate storm drain;Street/curb and gutter;Surface water
Dec 26, 2009250 galGrease / FOG—Street/curb and gutter;Unpaved surface
Dec 22, 200975 galRoot Intrusion—Street/curb and gutter
Nov 26, 20091K galRoot IntrusionYesStorm drain;Street/curb and gutter;Surface water
Nov 12, 20099K galOther / Unknown—Street/curb and gutter;Unpaved surface
Oct 1, 2009220 galRoot Intrusion—Storm drain;Street/curb and gutter;Unpaved surface
Oct 1, 2009220 galRoot Intrusion—Street/curb and gutter;Surface water;Unpaved surface
Sep 23, 200925 galRoot Intrusion—Other paved surface
Sep 10, 2009750 galRoot Intrusion—Unpaved surface
Sep 4, 2009200 galRoot Intrusion—Storm drain;Street/curb and gutter
Aug 31, 2009580 galGrease / FOG—Building or structure;Storm drain;Street/curb and gutter
Jul 21, 200950 galRoot Intrusion—Street/curb and gutter
Jul 20, 200925 galOther / Unknown—Street/curb and gutter
Jul 4, 200910 galOther / Unknown—Unpaved surface
Jun 15, 200915 galGrease / FOG—Unpaved surface
Jun 4, 200915 galOther / Unknown—Unpaved surface
May 26, 2009550 galGrease / FOGYesStorm drain;Street/curb and gutter;Surface water;Unpaved surface
May 12, 2009450 galGrease / FOGYesSeparate storm drain;Street/curb and gutter;Surface water
Apr 13, 200968 galRoot Intrusion—Storm drain;Street/curb and gutter
Apr 11, 200961 galOther / Unknown—Storm drain;Street/curb and gutter
Mar 19, 200975 galRoot Intrusion—Unpaved surface
Mar 5, 20093K galRoot IntrusionYesStorm drain;Surface water;Unpaved surface
Feb 16, 2009200 galRoot IntrusionYesStorm drain;Street/curb and gutter;Surface water
Jan 27, 200975 galRoot Intrusion—Storm drain;Street/curb and gutter
Jan 13, 200970 galRoot Intrusion—Storm drain;Street/curb and gutter;Unpaved surface
Jan 4, 2009100 galRoot Intrusion—Storm drain;Street/curb and gutter
Jan 2, 20095 galRoot Intrusion—Unpaved surface
Dec 13, 2008104 galRoot Intrusion—Storm drain;Street/curb and gutter
Dec 10, 200850 galGrease / FOG—Street/curb and gutter
Oct 5, 20082K galGrease / FOG—Storm drain;Street/curb and gutter
Sep 5, 2008220 galEquipment Failure—Storm drain;Street/curb and gutter;Unpaved surface
Sep 1, 200810 galRoot Intrusion—Street/curb and gutter
Aug 22, 200820 galRoot Intrusion—Unpaved surface
Aug 13, 200875 galRoot Intrusion—Street/curb and gutter
Jul 20, 200815K galGrease / FOGYesSeparate storm drain;Surface water;Unpaved surface
Jul 11, 2008236 galRoot Intrusion—Unpaved surface
Jun 21, 20081K galRoot IntrusionYesStreet/curb and gutter;Other (specify below)
May 4, 200825 galGrease / FOG—Storm drain;Street/curb and gutter
Apr 26, 200810 galGrease / FOG—Storm drain;Street/curb and gutter
Mar 29, 20085 galGrease / FOG—Building or structure
Mar 26, 2008650 galOther / Unknown—Building or structure;Unpaved surface
Mar 8, 2008129 galGrease / FOG—Storm drain;Street/curb and gutter
Mar 7, 2008150 galOther / Unknown—Building or structure
Feb 19, 2008150 galRoot Intrusion—Storm drain;Street/curb and gutter
Jan 28, 200850 galRoot Intrusion—Building or structure
Jan 26, 20088K galEquipment FailureYesStorm drain;Surface water
Jan 25, 2008600 galCapacity IssueYesStorm drain;Street/curb and gutter;Surface water
Jan 25, 200857K galCapacity IssueYesStorm drain;Street/curb and gutter;Surface water
Jan 25, 2008186K galCapacity IssueYesStorm drain;Street/curb and gutter;Surface water
Jan 7, 20088K galRoot IntrusionYesStreet/curb and gutter;Surface water
Jan 6, 2008800 galGrease / FOG—Unpaved surface
Jan 4, 200822K galCapacity IssueYesStorm drain;Street/curb and gutter;Surface water
Jan 4, 200817K galGrease / FOGYesStorm drain;Street/curb and gutter;Surface water
Jan 4, 2008105K galCapacity IssueYesStorm drain;Street/curb and gutter;Surface water
Oct 24, 200780 galRoot Intrusion—Unpaved surface
Oct 15, 200740 galRoot Intrusion—Storm drain;Street/curb and gutter
Sep 24, 20078K galOther / UnknownYesSeparate storm drain;Surface water
Sep 14, 2007900 galRoot Intrusion—Building or structure
Sep 13, 200750 galEquipment Failure—Storm drain;Street/curb and gutter
Sep 7, 200775 galOther / Unknown—Other (specify below)
Sep 1, 2007100 galRoot Intrusion—Street/curb and gutter

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