All rankings
California · California (CIWQS)
Nevada City
C
Often reaches water
Reported events
34
Total volume
7K gal
Reached waterways
7 (21%)
Reporting since
2014
What caused the overflows
Root Intrusion
25
Equipment Failure
7
Grease / FOG
1
Other / Unknown
1
Reported overflow events (showing 34 of 34)
| Date | Volume | Cause | Reached water | Receiving water |
|---|---|---|---|---|
| Feb 20, 2026 | 140 gal | Root Intrusion | — | — |
| Sep 3, 2025 | 300 gal | Equipment Failure | Yes | Deer Creek |
| Aug 26, 2023 | 400 gal | Grease / FOG | — | — |
| Dec 30, 2020 | 20 gal | Root Intrusion | — | Building or Structure;Paved Surface;Unpaved surface |
| Dec 14, 2018 | 131 gal | Root Intrusion | — | Building or Structure |
| Feb 4, 2018 | 7 gal | Root Intrusion | — | Paved Surface;Street/Curb and Gutter |
| Jan 4, 2018 | 90 gal | Equipment Failure | Yes | Drainage Channel |
| Dec 31, 2017 | 640 gal | Root Intrusion | Yes | Surface Water |
| Dec 30, 2017 | 75 gal | Root Intrusion | — | Paved Surface;Unpaved surface |
| Dec 11, 2017 | 2K gal | Root Intrusion | — | Unpaved surface |
| Dec 1, 2017 | 5 gal | Root Intrusion | — | Paved Surface |
| Nov 16, 2017 | 420 gal | Root Intrusion | Yes | Drainage Channel;Surface Water |
| Oct 29, 2017 | 50 gal | Equipment Failure | — | Paved Surface;Unpaved surface |
| Sep 14, 2017 | 2K gal | Equipment Failure | Yes | Surface Water |
| Jul 31, 2017 | 125 gal | Root Intrusion | — | Paved Surface |
| May 10, 2017 | 75 gal | Root Intrusion | — | Unpaved surface |
| Dec 31, 2016 | 35 gal | Other / Unknown | — | Unpaved surface |
| Jan 28, 2016 | 25 gal | Root Intrusion | — | Unpaved surface |
| Jan 1, 2016 | 150 gal | Root Intrusion | — | Unpaved surface |
| Dec 14, 2015 | 5 gal | Root Intrusion | — | Unpaved surface |
| Nov 20, 2015 | 60 gal | Root Intrusion | — | Street/Curb and Gutter |
| Sep 25, 2015 | 25 gal | Equipment Failure | — | Unpaved surface |
| Sep 12, 2015 | 38 gal | Root Intrusion | — | Paved Surface;Unpaved surface |
| May 21, 2015 | 500 gal | Equipment Failure | Yes | Drainage Channel;Paved Surface;Street/Curb and Gutter;Unpaved surface |
| Apr 14, 2015 | 323 gal | Root Intrusion | Yes | Surface Water |
| Mar 10, 2015 | 12 gal | Root Intrusion | — | Unpaved surface |
| Jan 17, 2015 | 10 gal | Equipment Failure | — | Paved Surface |
| Dec 8, 2014 | 3 gal | Root Intrusion | — | Unpaved surface |
| Dec 1, 2014 | 45 gal | Root Intrusion | — | Unpaved surface |
| Nov 23, 2014 | 30 gal | Root Intrusion | — | Paved Surface;Unpaved surface |
| Sep 13, 2014 | 32 gal | Root Intrusion | — | Unpaved surface |
| Aug 7, 2014 | 16 gal | Root Intrusion | — | Street/Curb and Gutter;Unpaved surface |
| Jul 29, 2014 | 20 gal | Root Intrusion | — | Unpaved surface |
| Jul 6, 2014 | 4 gal | Root Intrusion | — | Unpaved surface |
Source: California (CIWQS). Volumes are utility-reported estimates. Some events lack precise coordinates or volumes.