California · California (CIWQS)

Glendale City

Usually reaches water

Reported events

297

Total volume

399K gal

Reached waterways

151 (51%)

Reporting since

2007

What caused the overflows

Root Intrusion

178

Other / Unknown

Equipment Failure

Grease / FOG

Reported overflow events (showing 200 of 297)

Date	Volume	Cause	Reached water	Receiving water
Feb 4, 2026	840 gal	Root Intrusion	Yes	Los Angeles River
Dec 1, 2025	812 gal	Root Intrusion	Yes	Los Angeles River
Nov 10, 2025	2K gal	Root Intrusion	—	—
Nov 4, 2025	2K gal	Root Intrusion	—	—
May 3, 2025	765 gal	Equipment Failure	Yes	L.A. River
Feb 24, 2025	3K gal	Equipment Failure	Yes	Los Angeles River
Jan 9, 2025	270 gal	Root Intrusion	Yes	L.A. River
Nov 12, 2024	2K gal	Root Intrusion	Yes	L.A. River
Nov 9, 2024	3K gal	Other / Unknown	Yes	Verdugo Wash
Jul 20, 2024	4K gal	Root Intrusion	Yes	L.A. River
May 16, 2024	1K gal	Root Intrusion	Yes	L.A. River
Feb 13, 2024	2K gal	Grease / FOG	Yes	Los Angeles River
Jan 10, 2024	221 gal	Root Intrusion	—	—
Jan 7, 2024	382 gal	Root Intrusion	Yes	Los Angeles River via the Verdugo Wash
Dec 17, 2023	4K gal	Grease / FOG	Yes	Los Angeles River
Nov 29, 2023	2K gal	Grease / FOG	Yes	Los Angeles River
Nov 25, 2023	602 gal	Other / Unknown	—	—
Jun 15, 2023	85 gal	Root Intrusion	—	—
Apr 5, 2023	178 gal	Root Intrusion	Yes	Separate Storm Drain;Street/Curb and Gutter;Surface Water
Dec 24, 2022	612 gal	Root Intrusion	Yes	Separate Storm Drain;Street/Curb and Gutter;Surface Water
Sep 22, 2022	323 gal	Root Intrusion	Yes	Separate Storm Drain;Street/Curb and Gutter;Surface Water
Sep 9, 2022	86 gal	Root Intrusion	Yes	Separate Storm Drain;Street/Curb and Gutter;Surface Water
Aug 14, 2022	2K gal	Root Intrusion	Yes	Separate Storm Drain;Street/Curb and Gutter;Surface Water
Jul 16, 2022	2K gal	Root Intrusion	Yes	Separate Storm Drain;Street/Curb and Gutter;Surface Water
May 15, 2022	5K gal	Equipment Failure	Yes	Building or Structure;Paved Surface;Separate Storm Drain;Street/Curb and Gutter;Surface Water;Unpaved surface
Jan 23, 2022	81 gal	Root Intrusion	—	Paved Surface;Unpaved surface
Jan 15, 2022	727 gal	Root Intrusion	Yes	Separate Storm Drain;Street/Curb and Gutter;Surface Water
Jan 1, 2022	8K gal	Other / Unknown	Yes	Building or Structure;Paved Surface;Separate Storm Drain;Street/Curb and Gutter;Unpaved surface
Nov 18, 2021	450 gal	Equipment Failure	Yes	Separate Storm Drain;Street/Curb and Gutter;Surface Water
Nov 8, 2021	3K gal	Root Intrusion	Yes	Separate Storm Drain;Street/Curb and Gutter;Surface Water
Aug 25, 2021	720 gal	Root Intrusion	Yes	Separate Storm Drain;Street/Curb and Gutter
Aug 7, 2021	186 gal	Root Intrusion	Yes	Separate Storm Drain;Street/Curb and Gutter;Surface Water
Jul 31, 2021	860 gal	Root Intrusion	Yes	Drainage Channel;Paved Surface
Jul 16, 2021	38 gal	Other / Unknown	—	Paved Surface
May 30, 2021	68 gal	Root Intrusion	Yes	Separate Storm Drain;Street/Curb and Gutter;Surface Water;Unpaved surface
May 26, 2021	8K gal	Root Intrusion	Yes	Drainage Channel;Paved Surface;Separate Storm Drain;Street/Curb and Gutter;Surface Water
May 20, 2021	4K gal	Root Intrusion	Yes	Paved Surface;Separate Storm Drain;Street/Curb and Gutter;Surface Water
Apr 28, 2021	64 gal	Root Intrusion	—	Street/Curb and Gutter
Apr 12, 2021	1K gal	Other / Unknown	—	Other (specify below)
Mar 29, 2021	220 gal	Root Intrusion	Yes	Separate Storm Drain;Street/Curb and Gutter;Surface Water
Feb 27, 2021	875 gal	Equipment Failure	Yes	Separate Storm Drain;Street/Curb and Gutter;Surface Water
Feb 25, 2021	972 gal	Root Intrusion	Yes	Separate Storm Drain;Street/Curb and Gutter;Surface Water
Feb 20, 2021	923 gal	Root Intrusion	—	Unpaved surface
Feb 3, 2021	1K gal	Root Intrusion	Yes	Separate Storm Drain;Street/Curb and Gutter;Surface Water
Feb 1, 2021	2K gal	Root Intrusion	Yes	Separate Storm Drain;Street/Curb and Gutter;Surface Water
Jan 13, 2021	218 gal	Root Intrusion	Yes	Drainage Channel;Surface Water;Unpaved surface
Jan 12, 2021	7K gal	Root Intrusion	—	Unpaved surface
Jan 2, 2021	1K gal	Root Intrusion	Yes	Separate Storm Drain;Street/Curb and Gutter;Surface Water
Dec 31, 2020	3 gal	Root Intrusion	—	Paved Surface;Unpaved surface
Nov 19, 2020	2K gal	Equipment Failure	Yes	Paved Surface;Separate Storm Drain;Street/Curb and Gutter;Surface Water;Unpaved surface
Sep 14, 2020	22 gal	Root Intrusion	—	Other (specify below);Unpaved surface
Aug 23, 2020	2K gal	Equipment Failure	Yes	Building or Structure;Drainage Channel;Street/Curb and Gutter;Surface Water;Unpaved surface
Aug 4, 2020	25 gal	Root Intrusion	—	Street/Curb and Gutter;Unpaved surface
Jul 28, 2020	2K gal	Root Intrusion	Yes	Separate Storm Drain;Street/Curb and Gutter;Surface Water
Jun 14, 2020	520 gal	Equipment Failure	Yes	Separate Storm Drain;Street/Curb and Gutter;Surface Water
Apr 4, 2020	350 gal	Root Intrusion	—	Street/Curb and Gutter
Feb 26, 2020	2K gal	Grease / FOG	—	Building or Structure;Other (specify below);Paved Surface;Unpaved surface
Jan 10, 2020	2K gal	Root Intrusion	—	Other (specify below)
Dec 1, 2019	9K gal	Equipment Failure	Yes	Building or Structure;Paved Surface;Separate Storm Drain;Street/Curb and Gutter;Surface Water
Nov 30, 2019	886 gal	Root Intrusion	—	Building or Structure;Unpaved surface
Oct 25, 2019	125 gal	Root Intrusion	—	Street/Curb and Gutter
May 28, 2019	90 gal	Root Intrusion	—	Unpaved surface
May 2, 2019	156 gal	Other / Unknown	—	Building or Structure
Feb 18, 2019	2K gal	Root Intrusion	Yes	Separate Storm Drain;Street/Curb and Gutter;Surface Water;Unpaved surface
Feb 2, 2019	43 gal	Equipment Failure	—	Other (specify below)
Jan 17, 2019	11K gal	Root Intrusion	Yes	Separate Storm Drain;Street/Curb and Gutter;Surface Water
Jan 2, 2019	330 gal	Root Intrusion	—	Building or Structure
Dec 23, 2018	5 gal	Root Intrusion	—	Paved Surface
Dec 17, 2018	12K gal	Other / Unknown	Yes	Separate Storm Drain;Street/Curb and Gutter;Surface Water;Unpaved surface
Dec 7, 2018	595 gal	Root Intrusion	Yes	Separate Storm Drain;Street/Curb and Gutter;Surface Water
Nov 22, 2018	1K gal	Root Intrusion	—	Unpaved surface
Nov 4, 2018	3K gal	Root Intrusion	—	Unpaved surface
Oct 29, 2018	5K gal	Root Intrusion	Yes	Separate Storm Drain;Street/Curb and Gutter;Surface Water
Oct 24, 2018	5K gal	Grease / FOG	Yes	Building or Structure;Paved Surface;Separate Storm Drain;Street/Curb and Gutter;Surface Water;Unpaved surface
Oct 3, 2018	240 gal	Other / Unknown	Yes	Drainage Channel;Street/Curb and Gutter;Unpaved surface
Aug 31, 2018	2K gal	Root Intrusion	Yes	Paved Surface;Separate Storm Drain;Street/Curb and Gutter;Surface Water
Aug 18, 2018	3K gal	Root Intrusion	Yes	Paved Surface;Separate Storm Drain;Street/Curb and Gutter;Surface Water;Unpaved surface
Jun 17, 2018	613 gal	Root Intrusion	Yes	Other (specify below);Separate Storm Drain;Surface Water;Unpaved surface
Apr 14, 2018	30 gal	Root Intrusion	—	Unpaved surface
Apr 4, 2018	240 gal	Other / Unknown	Yes	Separate Storm Drain;Street/Curb and Gutter;Surface Water
Mar 18, 2018	9 gal	Root Intrusion	—	Paved Surface;Street/Curb and Gutter
Mar 9, 2018	825 gal	Grease / FOG	—	Street/Curb and Gutter
Jan 27, 2018	50 gal	Equipment Failure	—	Paved Surface;Unpaved surface
Jan 26, 2018	761 gal	Root Intrusion	—	Unpaved surface
Jan 25, 2018	63 gal	Root Intrusion	—	Other (specify below)
Dec 15, 2017	38 gal	Equipment Failure	—	Building or Structure
Oct 22, 2017	3K gal	Root Intrusion	Yes	Separate Storm Drain;Street/Curb and Gutter;Surface Water
Sep 6, 2017	42 gal	Root Intrusion	—	Street/Curb and Gutter
Aug 17, 2017	325 gal	Root Intrusion	Yes	Separate Storm Drain;Street/Curb and Gutter;Surface Water
Aug 15, 2017	2K gal	Equipment Failure	Yes	Separate Storm Drain;Street/Curb and Gutter;Surface Water
Aug 5, 2017	22K gal	Equipment Failure	Yes	Building or Structure;Paved Surface;Separate Storm Drain;Street/Curb and Gutter;Surface Water;Unpaved surface
Jul 23, 2017	3K gal	Root Intrusion	—	Building or Structure
Jun 29, 2017	190 gal	Root Intrusion	Yes	Separate Storm Drain;Street/Curb and Gutter;Surface Water
May 11, 2017	80 gal	Root Intrusion	Yes	Paved Surface;Separate Storm Drain;Street/Curb and Gutter;Surface Water
Apr 28, 2017	2K gal	Other / Unknown	Yes	Separate Storm Drain;Street/Curb and Gutter;Surface Water
Feb 25, 2017	1K gal	Equipment Failure	Yes	Drainage Channel;Paved Surface;Separate Storm Drain;Street/Curb and Gutter
Feb 23, 2017	3K gal	Equipment Failure	Yes	Drainage Channel;Paved Surface;Separate Storm Drain;Street/Curb and Gutter;Surface Water
Feb 18, 2017	83 gal	Root Intrusion	Yes	Building or Structure;Paved Surface;Separate Storm Drain;Street/Curb and Gutter;Surface Water
Feb 8, 2017	2K gal	Root Intrusion	Yes	Other (specify below);Paved Surface;Separate Storm Drain;Street/Curb and Gutter;Surface Water
Jan 1, 2017	300 gal	Equipment Failure	Yes	Separate Storm Drain;Street/Curb and Gutter;Surface Water
Dec 26, 2016	10 gal	Root Intrusion	—	Unpaved surface
Dec 23, 2016	6K gal	Grease / FOG	—	Building or Structure
Dec 21, 2016	10 gal	Other / Unknown	—	Street/Curb and Gutter
Dec 18, 2016	11 gal	Root Intrusion	—	Street/Curb and Gutter
Dec 13, 2016	12K gal	Equipment Failure	Yes	Building or Structure;Drainage Channel;Paved Surface;Separate Storm Drain;Street/Curb and Gutter;Surface Water
Dec 5, 2016	480 gal	Root Intrusion	Yes	Separate Storm Drain;Street/Curb and Gutter;Surface Water
Nov 24, 2016	630 gal	Equipment Failure	—	Separate Storm Drain;Street/Curb and Gutter
Nov 7, 2016	290 gal	Other / Unknown	Yes	Drainage Channel;Street/Curb and Gutter;Surface Water
Sep 28, 2016	45 gal	Grease / FOG	—	Street/Curb and Gutter
Sep 21, 2016	5 gal	Root Intrusion	—	Street/Curb and Gutter
Sep 14, 2016	220 gal	Root Intrusion	—	Unpaved surface
Jun 26, 2016	285 gal	Equipment Failure	Yes	Separate Storm Drain;Street/Curb and Gutter;Surface Water
Jun 24, 2016	5 gal	Root Intrusion	—	Street/Curb and Gutter
Jun 24, 2016	1K gal	Equipment Failure	Yes	Separate Storm Drain;Street/Curb and Gutter;Surface Water
Jun 1, 2016	165 gal	Equipment Failure	—	Paved Surface;Unpaved surface
Mar 24, 2016	6K gal	Root Intrusion	—	Other (specify below);Unpaved surface
Jan 21, 2016	2K gal	Grease / FOG	Yes	Building or Structure;Paved Surface;Separate Storm Drain;Street/Curb and Gutter;Surface Water;Unpaved surface
Jan 19, 2016	1K gal	Grease / FOG	Yes	Separate Storm Drain
Jan 10, 2016	275 gal	Equipment Failure	Yes	Separate Storm Drain;Street/Curb and Gutter;Surface Water
Jan 8, 2016	350 gal	Other / Unknown	—	Other (specify below)
Jan 7, 2016	1K gal	Root Intrusion	Yes	Building or Structure;Separate Storm Drain;Street/Curb and Gutter;Surface Water
Nov 28, 2015	38 gal	Equipment Failure	—	Building or Structure
Nov 1, 2015	240 gal	Root Intrusion	—	Paved Surface;Street/Curb and Gutter;Unpaved surface
Nov 1, 2015	650 gal	Root Intrusion	Yes	Separate Storm Drain;Street/Curb and Gutter;Surface Water
Sep 18, 2015	7K gal	Equipment Failure	Yes	Building or Structure;Separate Storm Drain;Street/Curb and Gutter
Sep 12, 2015	16 gal	Root Intrusion	—	Street/Curb and Gutter
Jul 17, 2015	2 gal	Root Intrusion	—	Street/Curb and Gutter
Jul 15, 2015	1K gal	Root Intrusion	Yes	Drainage Channel;Separate Storm Drain;Street/Curb and Gutter;Surface Water
Jun 30, 2015	5 gal	Equipment Failure	—	Street/Curb and Gutter
May 28, 2015	30 gal	Root Intrusion	—	Paved Surface;Street/Curb and Gutter
May 23, 2015	200 gal	Grease / FOG	Yes	Separate Storm Drain;Street/Curb and Gutter;Surface Water
May 20, 2015	221 gal	Other / Unknown	—	Building or Structure;Other (specify below)
Apr 27, 2015	1K gal	Other / Unknown	Yes	Drainage Channel;Paved Surface;Separate Storm Drain;Street/Curb and Gutter
Apr 23, 2015	650 gal	Root Intrusion	Yes	Separate Storm Drain;Street/Curb and Gutter;Surface Water
Apr 16, 2015	410 gal	Other / Unknown	—	Separate Storm Drain;Street/Curb and Gutter
Feb 21, 2015	5K gal	Root Intrusion	—	Separate Storm Drain;Street/Curb and Gutter
Feb 11, 2015	950 gal	Root Intrusion	Yes	Drainage Channel;Separate Storm Drain;Street/Curb and Gutter;Surface Water;Unpaved surface
Jan 23, 2015	600 gal	Root Intrusion	Yes	Building or Structure;Separate Storm Drain;Surface Water
Jan 20, 2015	25 gal	Root Intrusion	—	Building or Structure
Jan 8, 2015	300 gal	Root Intrusion	—	Paved Surface;Street/Curb and Gutter;Unpaved surface
Dec 17, 2014	200 gal	Root Intrusion	—	Street/Curb and Gutter;Unpaved surface
Oct 18, 2014	100 gal	Root Intrusion	—	Building or Structure;Other (specify below)
Oct 12, 2014	8K gal	Root Intrusion	Yes	Separate Storm Drain;Street/Curb and Gutter;Surface Water
Oct 12, 2014	12K gal	Root Intrusion	—	Unpaved surface
Sep 20, 2014	225 gal	Root Intrusion	Yes	Separate Storm Drain;Street/Curb and Gutter;Surface Water
Aug 12, 2014	55 gal	Other / Unknown	—	Building or Structure;Separate Storm Drain;Street/Curb and Gutter
Aug 6, 2014	8K gal	Equipment Failure	—	Other (specify below);Unpaved surface
Jul 31, 2014	550 gal	Equipment Failure	—	Separate Storm Drain;Street/Curb and Gutter
Jul 28, 2014	40 gal	Root Intrusion	—	Street/Curb and Gutter
May 31, 2014	50 gal	Root Intrusion	—	Paved Surface;Unpaved surface
Apr 24, 2014	440 gal	Grease / FOG	Yes	Separate Storm Drain;Street/Curb and Gutter;Surface Water
Mar 10, 2014	900 gal	Root Intrusion	—	Separate Storm Drain;Street/Curb and Gutter
Feb 23, 2014	357 gal	Other / Unknown	—	Other (specify below)
Dec 21, 2013	54 gal	Root Intrusion	Yes	Separate Storm Drain;Street/Curb and Gutter;Surface Water
Dec 19, 2013	58 gal	Root Intrusion	Yes	Separate Storm Drain;Street/Curb and Gutter
Dec 12, 2013	20 gal	Root Intrusion	—	Unpaved surface
Dec 9, 2013	450 gal	Other / Unknown	—	Building or Structure;Unpaved surface
Dec 3, 2013	380 gal	Equipment Failure	Yes	Street/Curb and Gutter;Surface Water
Nov 9, 2013	98 gal	Root Intrusion	—	Other (specify below)
Aug 28, 2013	4K gal	Grease / FOG	Yes	Separate Storm Drain;Street/Curb and Gutter;Surface Water;Street/curb and gutter
Aug 5, 2013	235 gal	Root Intrusion	—	Separate storm drain;Street/curb and gutter;Other (specify below)
Jun 24, 2013	2K gal	Root Intrusion	—	Building or structure;Separate storm drain;Street/curb and gutter
Jun 4, 2013	579 gal	Root Intrusion	—	Other paved surface;Separate storm drain;Street/curb and gutter;Other (specify below)
May 7, 2013	254 gal	Other / Unknown	—	Building or structure;Unpaved surface
Mar 26, 2013	38 gal	Root Intrusion	—	Street/curb and gutter
Feb 11, 2013	3K gal	Root Intrusion	—	Building or structure
Jan 24, 2013	3K gal	Root Intrusion	—	Separate storm drain;Street/curb and gutter
Jan 12, 2013	275 gal	Other / Unknown	—	Separate storm drain;Street/curb and gutter;Other (specify below)
Jan 6, 2013	200 gal	Root Intrusion	—	Unpaved surface
Dec 15, 2012	120 gal	Root Intrusion	—	Separate storm drain;Street/curb and gutter
Dec 1, 2012	250 gal	Root Intrusion	—	Other (specify below)
Oct 31, 2012	2K gal	Root Intrusion	—	Separate storm drain;Street/curb and gutter;Surface water;Unpaved surface
Oct 16, 2012	73 gal	Root Intrusion	—	Other paved surface;Separate storm drain;Street/curb and gutter
Sep 9, 2012	375 gal	Root Intrusion	—	Separate storm drain;Street/curb and gutter;Unpaved surface
Jun 23, 2012	900 gal	Other / Unknown	—	Separate storm drain;Surface water
May 24, 2012	5K gal	Other / Unknown	Yes	Separate storm drain;Unpaved surface;Other (specify below)
Apr 25, 2012	5 gal	Other / Unknown	—	Street/curb and gutter
Apr 16, 2012	135 gal	Other / Unknown	—	Other (specify below)
Apr 4, 2012	155 gal	Root Intrusion	—	Separate storm drain;Street/curb and gutter;Surface water
Mar 26, 2012	75 gal	Other / Unknown	—	Building or structure;Other (specify below)
Jan 10, 2012	23 gal	Other / Unknown	—	Street/curb and gutter
Dec 31, 2011	600 gal	Other / Unknown	—	Separate storm drain;Street/curb and gutter
Dec 21, 2011	990 gal	Root Intrusion	Yes	Separate storm drain;Street/curb and gutter;Surface water
Nov 7, 2011	225 gal	Root Intrusion	Yes	Separate storm drain;Street/curb and gutter;Surface water
Nov 6, 2011	415 gal	Root Intrusion	—	Building or structure;Other paved surface
Oct 20, 2011	500 gal	Other / Unknown	Yes	Other paved surface;Separate storm drain;Street/curb and gutter;Surface water
Sep 25, 2011	1K gal	Root Intrusion	Yes	Other (specify below)
Sep 23, 2011	10 gal	Other / Unknown	—	Other paved surface;Unpaved surface
Sep 14, 2011	375 gal	Root Intrusion	—	Unpaved surface
Aug 20, 2011	5 gal	Root Intrusion	—	Unpaved surface
Jul 6, 2011	2K gal	Root Intrusion	Yes	Separate storm drain;Street/curb and gutter;Surface water
Mar 15, 2011	12K gal	Other / Unknown	Yes	Building or structure;Other paved surface;Separate storm drain;Street/curb and gutter;Surface water
Mar 12, 2011	25 gal	Root Intrusion	—	Street/curb and gutter
Feb 12, 2011	200 gal	Root Intrusion	—	Other (specify below)
Jan 25, 2011	680 gal	Root Intrusion	Yes	Separate storm drain;Street/curb and gutter;Surface water
Jan 25, 2011	70 gal	Root Intrusion	—	Street/curb and gutter
Jan 15, 2011	265 gal	Root Intrusion	Yes	Separate storm drain;Street/curb and gutter;Surface water
Jan 12, 2011	2K gal	Other / Unknown	Yes	Separate storm drain;Street/curb and gutter;Surface water
Dec 25, 2010	175 gal	Other / Unknown	Yes	Separate storm drain;Street/curb and gutter;Surface water
Oct 31, 2010	640 gal	Root Intrusion	—	Unpaved surface

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