All rankings
California · California (CIWQS)
Altamont Road
C
Often reaches water
Reported events
154
Total volume
132K gal
Reached waterways
31 (20%)
Reporting since
2007
What caused the overflows
Root Intrusion
107
Other / Unknown
27
Equipment Failure
15
Grease / FOG
5
Reported overflow events (showing 154 of 154)
| Date | Volume | Cause | Reached water | Receiving water |
|---|---|---|---|---|
| May 25, 2026 | 79 gal | Root Intrusion | — | — |
| Mar 9, 2026 | 302 gal | Other / Unknown | Yes | — |
| Mar 9, 2026 | 302 gal | Equipment Failure | Yes | — |
| Mar 9, 2026 | 302 gal | Equipment Failure | Yes | Drainage ditch |
| May 28, 2023 | 29K gal | Equipment Failure | Yes | Separate Storm Drain |
| Mar 3, 2023 | 6K gal | Other / Unknown | Yes | Other (specify below) |
| Jan 30, 2023 | 38K gal | Other / Unknown | Yes | Surface Water |
| Dec 24, 2022 | 4K gal | Equipment Failure | Yes | Separate Storm Drain |
| Nov 17, 2022 | 200 gal | Root Intrusion | — | Other (specify below);Paved Surface |
| Feb 8, 2022 | 360 gal | Grease / FOG | — | Separate Storm Drain |
| Nov 19, 2021 | 1 gal | Root Intrusion | — | Unpaved surface |
| Aug 8, 2021 | 1 gal | Grease / FOG | — | Unpaved surface |
| Apr 16, 2021 | 37 gal | Root Intrusion | — | Unpaved surface |
| Aug 12, 2020 | 1K gal | Root Intrusion | — | Unpaved surface |
| Jun 23, 2020 | 62 gal | Grease / FOG | — | Other (specify below) |
| Feb 5, 2020 | 39 gal | Root Intrusion | — | Paved Surface;Separate Storm Drain;Street/Curb and Gutter |
| Jan 18, 2019 | 70 gal | Root Intrusion | — | Unpaved surface |
| Dec 24, 2017 | 180 gal | Root Intrusion | — | Unpaved surface |
| Oct 9, 2017 | 150 gal | Root Intrusion | — | Unpaved surface |
| Jul 13, 2017 | 349 gal | Equipment Failure | — | Unpaved surface |
| Jan 11, 2017 | 1K gal | Root Intrusion | Yes | Surface Water;Unpaved surface |
| Feb 3, 2016 | 3 gal | Root Intrusion | — | Paved Surface |
| Dec 26, 2015 | 15 gal | Root Intrusion | — | Paved Surface;Unpaved surface |
| Nov 30, 2015 | 20 gal | Root Intrusion | — | Paved Surface;Unpaved surface |
| Nov 18, 2015 | 7 gal | Root Intrusion | — | Unpaved surface |
| Sep 21, 2015 | 404 gal | Equipment Failure | — | Unpaved surface |
| Jul 9, 2015 | 126 gal | Other / Unknown | — | Street/Curb and Gutter |
| Jun 24, 2015 | 29 gal | Root Intrusion | — | Unpaved surface |
| Feb 1, 2015 | 112 gal | Root Intrusion | — | Other (specify below) |
| Nov 8, 2014 | 1K gal | Root Intrusion | Yes | Separate Storm Drain;Street/Curb and Gutter;Surface Water |
| Nov 3, 2014 | 50 gal | Root Intrusion | — | Building or Structure |
| Oct 14, 2014 | 21 gal | Root Intrusion | — | Unpaved surface |
| Sep 12, 2014 | 228 gal | Root Intrusion | — | Separate Storm Drain |
| Apr 14, 2014 | 13 gal | Root Intrusion | — | Unpaved surface |
| Apr 14, 2014 | 3K gal | Other / Unknown | — | Building or Structure;Paved Surface;Street/Curb and Gutter;Unpaved surface |
| Apr 6, 2014 | 94 gal | Root Intrusion | — | Unpaved surface |
| Apr 3, 2014 | 1K gal | Equipment Failure | — | Other (specify below);Separate Storm Drain;Unpaved surface |
| Mar 19, 2014 | 61 gal | Root Intrusion | Yes | Paved Surface;Separate Storm Drain;Surface Water |
| Mar 5, 2014 | 105 gal | Root Intrusion | — | Unpaved surface |
| Mar 3, 2014 | 5K gal | Root Intrusion | Yes | Building or Structure;Drainage Channel;Paved Surface;Surface Water;Unpaved surface |
| Feb 21, 2014 | 23 gal | Root Intrusion | — | Unpaved surface |
| Feb 5, 2014 | 368 gal | Root Intrusion | — | Unpaved surface |
| Feb 2, 2014 | 57 gal | Root Intrusion | — | Paved Surface |
| Jan 27, 2014 | 12 gal | Root Intrusion | — | Unpaved surface |
| Jan 27, 2014 | 707 gal | Root Intrusion | — | Paved Surface |
| Jan 22, 2014 | 47 gal | Root Intrusion | — | Paved Surface;Unpaved surface |
| Jan 16, 2014 | 21 gal | Root Intrusion | — | Paved Surface |
| Nov 15, 2013 | 299 gal | Root Intrusion | — | Unpaved surface |
| Nov 7, 2013 | 4 gal | Root Intrusion | — | Paved Surface;Unpaved surface |
| Nov 2, 2013 | 1 gal | Equipment Failure | — | Unpaved surface |
| Aug 31, 2013 | 3 gal | Equipment Failure | — | Unpaved surface |
| Aug 28, 2013 | 576 gal | Root Intrusion | — | Unpaved surface |
| Aug 23, 2013 | 370 gal | Root Intrusion | — | Unpaved surface |
| Jul 5, 2013 | 13 gal | Root Intrusion | — | Unpaved surface |
| Jun 25, 2013 | 82 gal | Root Intrusion | — | Separate storm drain |
| Apr 28, 2013 | 40 gal | Other / Unknown | — | Other (specify below) |
| Mar 26, 2013 | 140 gal | Root Intrusion | — | Other (specify below) |
| Jan 23, 2013 | 288 gal | Root Intrusion | — | Unpaved surface |
| Jan 4, 2013 | 10 gal | Root Intrusion | — | Unpaved surface |
| Dec 2, 2012 | 2K gal | Other / Unknown | Yes | Surface water;Unpaved surface |
| Nov 10, 2012 | 2K gal | Root Intrusion | — | Unpaved surface |
| Oct 23, 2012 | 140 gal | Root Intrusion | — | Other paved surface |
| Oct 20, 2012 | 210 gal | Root Intrusion | — | Other (specify below) |
| Oct 13, 2012 | 6 gal | Root Intrusion | — | Other (specify below) |
| Jun 22, 2012 | 34 gal | Equipment Failure | — | Unpaved surface |
| Apr 15, 2012 | 300 gal | Root Intrusion | — | Unpaved surface |
| Mar 12, 2012 | 50 gal | Root Intrusion | — | Unpaved surface |
| Mar 9, 2012 | 1 gal | Root Intrusion | — | Unpaved surface |
| Mar 2, 2012 | 1 gal | Root Intrusion | — | Unpaved surface |
| Feb 23, 2012 | 15 gal | Root Intrusion | — | Unpaved surface |
| Jan 25, 2012 | 272 gal | Root Intrusion | — | Unpaved surface;Other (specify below) |
| Jan 19, 2012 | 250 gal | Other / Unknown | — | Unpaved surface;Other (specify below) |
| Jan 7, 2012 | 675 gal | Equipment Failure | Yes | Unpaved surface;Other (specify below) |
| Dec 10, 2011 | 90 gal | Root Intrusion | — | Unpaved surface |
| Dec 1, 2011 | 180 gal | Root Intrusion | — | Unpaved surface |
| Nov 26, 2011 | 630 gal | Root Intrusion | — | Unpaved surface;Other (specify below) |
| Oct 14, 2011 | 30 gal | Root Intrusion | — | Unpaved surface |
| Sep 27, 2011 | 60 gal | Root Intrusion | — | Unpaved surface |
| Aug 23, 2011 | 35 gal | Root Intrusion | — | Unpaved surface |
| Aug 20, 2011 | 5 gal | Root Intrusion | — | Unpaved surface |
| Aug 10, 2011 | 100 gal | Equipment Failure | — | Other paved surface |
| Aug 2, 2011 | 11 gal | Root Intrusion | — | Unpaved surface |
| Jul 27, 2011 | 150 gal | Root Intrusion | — | Unpaved surface |
| Jun 29, 2011 | 37 gal | Root Intrusion | — | Unpaved surface |
| Jun 9, 2011 | 11 gal | Root Intrusion | — | Unpaved surface |
| Jun 8, 2011 | 10 gal | Root Intrusion | — | Unpaved surface |
| May 27, 2011 | 2K gal | Root Intrusion | Yes | Other (specify below) |
| May 22, 2011 | 15 gal | Root Intrusion | — | Unpaved surface |
| May 7, 2011 | 90 gal | Root Intrusion | — | Unpaved surface |
| Apr 5, 2011 | 270 gal | Root Intrusion | — | Unpaved surface |
| Feb 11, 2011 | 150 gal | Other / Unknown | — | Other (specify below) |
| Feb 10, 2011 | 30 gal | Other / Unknown | — | Other (specify below) |
| Jan 16, 2011 | 200 gal | Root Intrusion | — | Unpaved surface |
| Jan 7, 2011 | 2K gal | Root Intrusion | — | Unpaved surface |
| Dec 21, 2010 | 50 gal | Root Intrusion | — | Unpaved surface |
| Dec 19, 2010 | 600 gal | Root Intrusion | Yes | Surface water;Unpaved surface;Other (specify below) |
| Dec 4, 2010 | 800 gal | Root Intrusion | Yes | Surface water;Unpaved surface |
| Nov 3, 2010 | 85 gal | Root Intrusion | Yes | Other paved surface;Street/curb and gutter |
| Oct 30, 2010 | 50 gal | Root Intrusion | — | Street/curb and gutter;Unpaved surface |
| Oct 29, 2010 | 720 gal | Root Intrusion | Yes | Surface water;Unpaved surface |
| Oct 17, 2010 | 200 gal | Root Intrusion | Yes | Unpaved surface |
| Oct 6, 2010 | 640 gal | Equipment Failure | — | Unpaved surface |
| Sep 8, 2010 | 1K gal | Root Intrusion | — | Unpaved surface |
| Aug 25, 2010 | 1K gal | Other / Unknown | Yes | Unpaved surface |
| Aug 4, 2010 | 4K gal | Root Intrusion | Yes | Other paved surface;Storm drain;Street/curb and gutter |
| Jun 3, 2010 | 800 gal | Equipment Failure | — | Unpaved surface |
| Apr 17, 2010 | 500 gal | Grease / FOG | Yes | Surface water;Unpaved surface |
| Apr 9, 2010 | 900 gal | Root Intrusion | — | Unpaved surface |
| Jan 30, 2010 | 1K gal | Root Intrusion | Yes | Other paved surface;Storm drain;Street/curb and gutter;Unpaved surface |
| Jan 22, 2010 | 200 gal | Root Intrusion | — | Unpaved surface |
| Dec 31, 2009 | 300 gal | Root Intrusion | — | Storm drain;Street/curb and gutter;Unpaved surface |
| Dec 25, 2009 | 20 gal | Root Intrusion | — | Street/curb and gutter |
| Dec 23, 2009 | 500 gal | Grease / FOG | — | Other (specify below) |
| Nov 30, 2009 | 75 gal | Root Intrusion | — | Street/curb and gutter |
| Nov 1, 2009 | 50 gal | Root Intrusion | Yes | Street/curb and gutter |
| Nov 1, 2009 | 50 gal | Root Intrusion | Yes | Separate storm drain;Street/curb and gutter |
| Oct 30, 2009 | 1K gal | Other / Unknown | — | Other (specify below) |
| Oct 6, 2009 | 500 gal | Root Intrusion | Yes | Storm drain |
| Sep 23, 2009 | 1K gal | Other / Unknown | Yes | Street/curb and gutter |
| Aug 17, 2009 | 20 gal | Root Intrusion | — | Unpaved surface |
| Apr 20, 2009 | 180 gal | Other / Unknown | — | Other paved surface |
| Apr 13, 2009 | 300 gal | Other / Unknown | Yes | Unpaved surface |
| Feb 13, 2009 | 840 gal | Other / Unknown | — | Other paved surface;Storm drain |
| Dec 27, 2008 | 130 gal | Root Intrusion | — | Unpaved surface |
| Dec 10, 2008 | 220 gal | Root Intrusion | — | Other paved surface;Unpaved surface |
| Dec 7, 2008 | 350 gal | Root Intrusion | — | Street/curb and gutter |
| Dec 5, 2008 | 120 gal | Root Intrusion | — | Other (specify below) |
| Nov 17, 2008 | 250 gal | Root Intrusion | — | Other paved surface |
| Nov 8, 2008 | 40 gal | Other / Unknown | — | Other (specify below) |
| Jun 29, 2008 | 150 gal | Equipment Failure | — | Street/curb and gutter |
| Jun 27, 2008 | 100 gal | Root Intrusion | — | Other paved surface;Street/curb and gutter |
| Jun 12, 2008 | 600 gal | Root Intrusion | — | Unpaved surface |
| Jun 2, 2008 | 600 gal | Root Intrusion | Yes | Other (specify below) |
| May 21, 2008 | 150 gal | Root Intrusion | — | Unpaved surface |
| Mar 6, 2008 | 30 gal | Other / Unknown | — | Unpaved surface |
| Mar 6, 2008 | 30 gal | Other / Unknown | — | Other (specify below) |
| Feb 20, 2008 | 30 gal | Root Intrusion | — | Unpaved surface |
| Feb 12, 2008 | 60 gal | Other / Unknown | — | Other paved surface |
| Feb 12, 2008 | 60 gal | Other / Unknown | — | Other (specify below) |
| Jan 18, 2008 | 180 gal | Other / Unknown | — | Unpaved surface;Other (specify below) |
| Jan 3, 2008 | 50 gal | Root Intrusion | — | Unpaved surface |
| Jan 2, 2008 | 60 gal | Root Intrusion | — | Other paved surface |
| Jan 1, 2008 | 30 gal | Other / Unknown | — | Other paved surface |
| Nov 29, 2007 | 750 gal | Other / Unknown | — | Unpaved surface |
| Nov 25, 2007 | 90 gal | Root Intrusion | — | Other paved surface |
| Nov 20, 2007 | 600 gal | Root Intrusion | — | Unpaved surface |
| Oct 1, 2007 | 115 gal | Root Intrusion | — | Unpaved surface |
| Sep 27, 2007 | 360 gal | Root Intrusion | — | Unpaved surface |
| Sep 11, 2007 | 480 gal | Root Intrusion | — | Unpaved surface |
| Sep 1, 2007 | 900 gal | Root Intrusion | — | Other paved surface |
| Jun 25, 2007 | 60 gal | Root Intrusion | — | Unpaved surface |
| Jun 19, 2007 | 90 gal | Other / Unknown | Yes | Unpaved surface;Other (specify below) |
| Jun 3, 2007 | 300 gal | Other / Unknown | Yes | Separate storm drain |
| May 16, 2007 | 500 gal | Other / Unknown | — | Separate storm drain |
Source: California (CIWQS). Volumes are utility-reported estimates. Some events lack precise coordinates or volumes.