All rankings
New York · New York (DEC)
Niagara Falls (C) WWTP
Permit NY0026336
F
Usually reaches water
Reported events
542
Total volume
5.8B gal
Reached waterways
540 (100%)
Reporting since
2021
What caused the overflows
Rainfall / Flooding
526
Equipment Failure
14
Root Intrusion
2
Reported overflow events (showing 200 of 542)
| Date | Volume | Cause | Reached water | Receiving water |
|---|---|---|---|---|
| Mar 27, 2023 | 10.0M gal | Rainfall / Flooding | Yes | Lower Niagara River |
| Mar 27, 2023 | 2.9M gal | Rainfall / Flooding | Yes | Lower Niagara River |
| Mar 25, 2023 | 15.7M gal | Rainfall / Flooding | Yes | Lower Niagara River |
| Mar 25, 2023 | 10.0M gal | Rainfall / Flooding | Yes | Lower Niagara River |
| Mar 23, 2023 | 5.3M gal | Rainfall / Flooding | Yes | Lower Niagara River |
| Mar 23, 2023 | 5.0M gal | Rainfall / Flooding | Yes | Lower Niagara River |
| Mar 17, 2023 | — | Rainfall / Flooding | Yes | Cayuga Creek |
| Mar 17, 2023 | — | Rainfall / Flooding | Yes | Cayuga Creek |
| Mar 17, 2023 | — | Rainfall / Flooding | Yes | Cayuga Island |
| Mar 17, 2023 | — | Rainfall / Flooding | Yes | Bergholtz creek |
| Mar 17, 2023 | — | Rainfall / Flooding | Yes | Bergholtz creek |
| Mar 17, 2023 | — | Rainfall / Flooding | Yes | Bergholtz creek |
| Mar 17, 2023 | — | Rainfall / Flooding | Yes | Bergholtz creek |
| Mar 16, 2023 | 48.6M gal | Rainfall / Flooding | Yes | Lower Niagara River |
| Mar 16, 2023 | — | Rainfall / Flooding | Yes | Cayuga Island |
| Mar 16, 2023 | 36.9M gal | Rainfall / Flooding | Yes | Lower Niagara River |
| Mar 16, 2023 | 10.0M gal | Rainfall / Flooding | Yes | Lower Niagara River |
| Mar 3, 2023 | 86.1M gal | Rainfall / Flooding | Yes | Lower Niagara River |
| Mar 3, 2023 | 81.3M gal | Rainfall / Flooding | Yes | Lower Niagara River |
| Mar 3, 2023 | 36.9M gal | Rainfall / Flooding | Yes | Lower Niagara River |
| Mar 3, 2023 | 62.7M gal | Rainfall / Flooding | Yes | Lower Niagara River |
| Mar 3, 2023 | 1.5M gal | Rainfall / Flooding | Yes | Lower Niagara River |
| Mar 2, 2023 | 1.5M gal | Rainfall / Flooding | Yes | Lower Niagara River |
| Mar 2, 2023 | 3.2M gal | Rainfall / Flooding | Yes | Lower Niagara River |
| Feb 16, 2023 | 1.6M gal | Rainfall / Flooding | Yes | Lower Niagara River |
| Feb 16, 2023 | 15.0M gal | Rainfall / Flooding | Yes | Lower Niagara River |
| Feb 9, 2023 | 41.3M gal | Rainfall / Flooding | Yes | Lower Niagara River |
| Feb 9, 2023 | 15.0M gal | Rainfall / Flooding | Yes | Lower Niagara River |
| Feb 9, 2023 | 40.0M gal | Rainfall / Flooding | Yes | Lower Niagara River |
| Jan 29, 2023 | 3.4M gal | Rainfall / Flooding | Yes | Lower Niagara River |
| Jan 29, 2023 | 5.0M gal | Rainfall / Flooding | Yes | Lower Niagara River |
| Jan 19, 2023 | 44.4M gal | Rainfall / Flooding | Yes | Niagara River (Lower) |
| Jan 19, 2023 | 500K gal | Rainfall / Flooding | Yes | Niagara River (Lower) |
| Jan 19, 2023 | 35.3M gal | Rainfall / Flooding | Yes | Niagara River (Lower) |
| Jan 19, 2023 | 1.5M gal | Rainfall / Flooding | Yes | Niagara River (Lower) |
| Jan 19, 2023 | — | Rainfall / Flooding | Yes | Cayuga creek |
| Jan 17, 2023 | 5.0M gal | Rainfall / Flooding | Yes | Lower Niagara River |
| Jan 17, 2023 | 6.2M gal | Rainfall / Flooding | Yes | Lower Niagara River |
| Jan 17, 2023 | 902K gal | Rainfall / Flooding | Yes | Lower Niagara River |
| Jan 17, 2023 | 200K gal | Rainfall / Flooding | Yes | Lower Niagara River |
| Jan 12, 2023 | 15.3M gal | Rainfall / Flooding | Yes | Lower Niagara River |
| Jan 12, 2023 | — | Rainfall / Flooding | Yes | Cayuga Creek |
| Jan 12, 2023 | 5.0M gal | Rainfall / Flooding | Yes | Lower Niagara River |
| Jan 12, 2023 | — | Rainfall / Flooding | Yes | Cayuga Creek |
| Jan 4, 2023 | 11.0M gal | Rainfall / Flooding | Yes | Lower Niagara River |
| Jan 4, 2023 | — | Rainfall / Flooding | Yes | Bergholtz Creek |
| Jan 4, 2023 | — | Rainfall / Flooding | Yes | Cayuga Creek |
| Jan 4, 2023 | — | Rainfall / Flooding | Yes | Cayuga Creek |
| Jan 4, 2023 | — | Rainfall / Flooding | Yes | Cayuga Creek |
| Jan 4, 2023 | — | Rainfall / Flooding | Yes | Cayuga Creek |
| Jan 4, 2023 | — | Rainfall / Flooding | Yes | Cayuga Creek |
| Jan 4, 2023 | — | Rainfall / Flooding | Yes | Cayuga Creek |
| Jan 4, 2023 | — | Rainfall / Flooding | Yes | Bergholtz Creek |
| Jan 4, 2023 | — | Rainfall / Flooding | Yes | Bergholtz Creek |
| Jan 4, 2023 | 500K gal | Rainfall / Flooding | Yes | Lower Niagara River |
| Jan 4, 2023 | 500K gal | Rainfall / Flooding | Yes | Lower Niagara River |
| Jan 4, 2023 | 11.0M gal | Rainfall / Flooding | Yes | Lower Niagara River |
| Jan 3, 2023 | 2.2M gal | Rainfall / Flooding | Yes | Lower Niagara River |
| Jan 3, 2023 | 5.0M gal | Rainfall / Flooding | Yes | Lower Niagara River |
| Dec 31, 2022 | 2.6M gal | Rainfall / Flooding | Yes | Lower Niagara River |
| Dec 31, 2022 | 5.0M gal | Rainfall / Flooding | Yes | Lower Niagara River |
| Dec 31, 2022 | 500K gal | Rainfall / Flooding | Yes | Lower Niagara River |
| Dec 31, 2022 | 1.0M gal | Rainfall / Flooding | Yes | Lower Niagara River |
| Dec 31, 2022 | 5.0M gal | Rainfall / Flooding | Yes | Lower Niagara River |
| Dec 31, 2022 | 7.7M gal | Rainfall / Flooding | Yes | Lower Niagara River |
| Dec 30, 2022 | — | Rainfall / Flooding | Yes | Cayuga Creek |
| Dec 30, 2022 | — | Rainfall / Flooding | Yes | Cayuga Creek |
| Dec 30, 2022 | 50K gal | Rainfall / Flooding | — | Niagara River |
| Dec 30, 2022 | 500K gal | Rainfall / Flooding | — | Niagara River |
| Dec 30, 2022 | 3.8M gal | Rainfall / Flooding | Yes | niagara river |
| Dec 30, 2022 | 5.0M gal | Rainfall / Flooding | Yes | niagara river |
| Dec 29, 2022 | — | Rainfall / Flooding | Yes | Cayuga Creek |
| Dec 29, 2022 | — | Rainfall / Flooding | Yes | Cayuga Creek |
| Dec 28, 2022 | 19K gal | Equipment Failure | Yes | Niagara River |
| Dec 23, 2022 | — | Rainfall / Flooding | Yes | Cayuga Creek |
| Dec 23, 2022 | 5.0M gal | Rainfall / Flooding | Yes | Lower Niagara River |
| Dec 23, 2022 | — | Rainfall / Flooding | Yes | Cayuga Creek |
| Dec 23, 2022 | 3.6M gal | Rainfall / Flooding | Yes | Lower Niagara River |
| Dec 22, 2022 | 5.0M gal | Rainfall / Flooding | Yes | Lower Niagara River |
| Dec 22, 2022 | 1.1M gal | Rainfall / Flooding | Yes | Lower Niagara River |
| Dec 15, 2022 | — | Rainfall / Flooding | Yes | Cayuga Creek |
| Dec 15, 2022 | — | Rainfall / Flooding | Yes | Cayuga Creek |
| Dec 15, 2022 | — | Rainfall / Flooding | Yes | Cayuga Creek |
| Dec 15, 2022 | 18.8M gal | Rainfall / Flooding | Yes | lower niagara river |
| Dec 15, 2022 | 10.0M gal | Rainfall / Flooding | Yes | lower niagara river |
| Dec 15, 2022 | — | Rainfall / Flooding | Yes | Cayuga Creek |
| Dec 3, 2022 | 5.0M gal | Rainfall / Flooding | Yes | Lower Niagara River |
| Dec 3, 2022 | 867K gal | Rainfall / Flooding | Yes | Lower Niagara River |
| Nov 30, 2022 | — | Rainfall / Flooding | Yes | Cayuga Creek |
| Nov 30, 2022 | 41.4M gal | Rainfall / Flooding | Yes | Lower Niagara River |
| Nov 30, 2022 | 41.7M gal | Rainfall / Flooding | Yes | Lower Niagara River |
| Nov 30, 2022 | 5.0M gal | Rainfall / Flooding | Yes | Lower Niagara River |
| Nov 30, 2022 | — | Rainfall / Flooding | Yes | Cayuga Creek |
| Nov 30, 2022 | — | Rainfall / Flooding | Yes | Cayuga Creek |
| Nov 30, 2022 | — | Rainfall / Flooding | Yes | Cayuga Creek |
| Nov 11, 2022 | — | Rainfall / Flooding | Yes | Cayuga Creek |
| Nov 11, 2022 | — | Rainfall / Flooding | Yes | Cayuga Creek |
| Nov 11, 2022 | 36.8M gal | Rainfall / Flooding | Yes | Lower Niagara River |
| Nov 11, 2022 | 5.0M gal | Rainfall / Flooding | Yes | Lower Niagara River |
| Nov 11, 2022 | — | Rainfall / Flooding | Yes | Cayuga Creek |
| Nov 11, 2022 | — | Rainfall / Flooding | Yes | Cayuga Creek |
| Oct 31, 2022 | 5.0M gal | Rainfall / Flooding | Yes | Lower Niagara River |
| Oct 31, 2022 | 1.1M gal | Rainfall / Flooding | Yes | Lower Niagara River |
| Oct 26, 2022 | 5.0M gal | Rainfall / Flooding | Yes | Lower Niagara River |
| Oct 26, 2022 | 2.2M gal | Rainfall / Flooding | Yes | Lower Niagara River |
| Oct 20, 2022 | — | Rainfall / Flooding | Yes | Cauyga Creek |
| Oct 20, 2022 | 5.0M gal | Rainfall / Flooding | Yes | Lower Niagara River |
| Oct 20, 2022 | 5.9M gal | Rainfall / Flooding | Yes | Lower Niagara River |
| Oct 20, 2022 | — | Rainfall / Flooding | Yes | Cayuga Creek |
| Oct 20, 2022 | — | Rainfall / Flooding | Yes | Cayuga Creek |
| Oct 20, 2022 | — | Rainfall / Flooding | Yes | Cauyga Creek |
| Oct 18, 2022 | 5.0M gal | Rainfall / Flooding | Yes | Lower Niagara River |
| Oct 18, 2022 | 1.1M gal | Root Intrusion | Yes | Lower Niagara River |
| Oct 18, 2022 | 5.0M gal | Root Intrusion | Yes | Lower Niagara River |
| Oct 18, 2022 | 19.5M gal | Rainfall / Flooding | Yes | Lower Niagara River |
| Oct 17, 2022 | — | Rainfall / Flooding | Yes | Cayuga Creek |
| Oct 17, 2022 | 9.3M gal | Rainfall / Flooding | Yes | Lower Niagara River |
| Oct 17, 2022 | 10.0M gal | Rainfall / Flooding | Yes | Lower Niagara River |
| Oct 17, 2022 | — | Rainfall / Flooding | Yes | Cayuga Creek |
| Oct 13, 2022 | — | Rainfall / Flooding | Yes | Cayuga Creek |
| Oct 13, 2022 | — | Rainfall / Flooding | Yes | Cayuga Creek |
| Oct 12, 2022 | 13.0M gal | Rainfall / Flooding | Yes | Lower Niagara River |
| Oct 12, 2022 | 5.0M gal | Rainfall / Flooding | Yes | Lower Niagara River |
| Sep 27, 2022 | 110.0M gal | Rainfall / Flooding | Yes | Lower Niagara River |
| Sep 27, 2022 | 2.5M gal | Rainfall / Flooding | Yes | Lower Niagara River |
| Sep 27, 2022 | 5.0M gal | Rainfall / Flooding | Yes | Lower Niagara River |
| Sep 27, 2022 | 10.0M gal | Rainfall / Flooding | Yes | Lower Niagara River |
| Sep 25, 2022 | 5.0M gal | Rainfall / Flooding | Yes | Lower Niagara River |
| Sep 25, 2022 | 16.3M gal | Rainfall / Flooding | Yes | Lower Niagara River |
| Sep 25, 2022 | 5.0M gal | Rainfall / Flooding | Yes | Lower Niagara River |
| Sep 25, 2022 | 1.1M gal | Rainfall / Flooding | Yes | Lower Niagara River |
| Sep 25, 2022 | — | Rainfall / Flooding | Yes | Cayuga Creek |
| Sep 25, 2022 | — | Rainfall / Flooding | Yes | Cayuga Creek |
| Sep 25, 2022 | — | Rainfall / Flooding | Yes | Cayuga Creek |
| Sep 25, 2022 | — | Rainfall / Flooding | Yes | Cayuga Creek |
| Sep 19, 2022 | 8.7M gal | Rainfall / Flooding | Yes | Lower Niagara River |
| Sep 19, 2022 | 10.0M gal | Rainfall / Flooding | Yes | Lower Niagara River |
| Sep 12, 2022 | 787K gal | Rainfall / Flooding | Yes | Lower Niagara River |
| Sep 12, 2022 | 5.0M gal | Rainfall / Flooding | Yes | Lower Niagara River |
| Sep 5, 2022 | 5.0M gal | Rainfall / Flooding | Yes | Lower Niagara River |
| Sep 5, 2022 | 2.5M gal | Rainfall / Flooding | Yes | Lower Niagara River |
| Sep 5, 2022 | 10.9M gal | Rainfall / Flooding | Yes | Lower Niagara River |
| Sep 5, 2022 | 10.0M gal | Rainfall / Flooding | Yes | Lower Niagara River |
| Aug 30, 2022 | 6.9M gal | Rainfall / Flooding | Yes | Lower Niagara River |
| Aug 30, 2022 | 5.0M gal | Rainfall / Flooding | Yes | Lower Niagara River |
| Aug 30, 2022 | — | Rainfall / Flooding | Yes | Cayuga Creek |
| Aug 30, 2022 | — | Rainfall / Flooding | Yes | Cayuga Creek |
| Aug 25, 2022 | 5.0M gal | Rainfall / Flooding | Yes | lower niagara river |
| Aug 25, 2022 | 5.0M gal | Rainfall / Flooding | Yes | lower niagara river |
| Aug 24, 2022 | 5.0M gal | Rainfall / Flooding | Yes | Lower Niagara River |
| Aug 24, 2022 | 17.3M gal | Rainfall / Flooding | Yes | Lower Niagara River |
| Aug 24, 2022 | — | Rainfall / Flooding | Yes | Cayuga Creek |
| Aug 24, 2022 | — | Rainfall / Flooding | Yes | Cayuga Creek |
| Aug 24, 2022 | — | Rainfall / Flooding | Yes | Cayuga Creek |
| Aug 24, 2022 | — | Rainfall / Flooding | Yes | Cayuga Creek |
| Aug 24, 2022 | — | Rainfall / Flooding | Yes | Cayuga Creek |
| Aug 24, 2022 | — | Rainfall / Flooding | Yes | Cayuga Creek |
| Aug 24, 2022 | — | Rainfall / Flooding | Yes | Cayuga Creek |
| Aug 22, 2022 | — | Rainfall / Flooding | Yes | Cayuga Creek |
| Aug 22, 2022 | 5.0M gal | Rainfall / Flooding | Yes | Lower Niagara River |
| Aug 22, 2022 | 10.7M gal | Rainfall / Flooding | Yes | Lower Niagara River |
| Aug 22, 2022 | — | Rainfall / Flooding | Yes | Cayuga Creek |
| Aug 22, 2022 | — | Rainfall / Flooding | Yes | Cayuga Creek |
| Aug 22, 2022 | — | Rainfall / Flooding | Yes | Cayuga Creek |
| Aug 20, 2022 | 5.0M gal | Rainfall / Flooding | Yes | Lower Niagara River |
| Aug 20, 2022 | 4.2M gal | Rainfall / Flooding | Yes | Lower Niagara River |
| Aug 8, 2022 | 5.0M gal | Rainfall / Flooding | Yes | Lower Niagara River |
| Aug 8, 2022 | 8.9M gal | Rainfall / Flooding | Yes | Lower Niagara River |
| Aug 5, 2022 | — | Rainfall / Flooding | Yes | Cayuga Creek |
| Aug 5, 2022 | 6.7M gal | Rainfall / Flooding | Yes | Lower Niagara River |
| Aug 5, 2022 | — | Rainfall / Flooding | Yes | Cayuga Creek |
| Aug 5, 2022 | 7.0M gal | Rainfall / Flooding | Yes | Lower Niagara River |
| Aug 5, 2022 | — | Rainfall / Flooding | Yes | Cayuga Creek |
| Aug 5, 2022 | — | Rainfall / Flooding | Yes | Cayuga Creek |
| Jul 28, 2022 | 5.0M gal | Rainfall / Flooding | Yes | lower Niagara river |
| Jul 28, 2022 | 36.6M gal | Rainfall / Flooding | Yes | lower Niagara river |
| Jul 20, 2022 | 5.0M gal | Rainfall / Flooding | Yes | Lower niagara river |
| Jul 20, 2022 | 5.2M gal | Rainfall / Flooding | Yes | Lower niagara river |
| Jul 18, 2022 | — | Equipment Failure | Yes | Cayuga Creek |
| Jul 18, 2022 | — | Equipment Failure | Yes | Cayuga Creek |
| Jul 18, 2022 | — | Rainfall / Flooding | Yes | Cayuga Creek |
| Jul 17, 2022 | 5.0M gal | Rainfall / Flooding | Yes | Lower niagara river |
| Jul 17, 2022 | 29.7M gal | Rainfall / Flooding | Yes | Lower niagara river |
| Jun 22, 2022 | 10.0M gal | Rainfall / Flooding | Yes | Lower Niagara River |
| Jun 22, 2022 | 1.7M gal | Rainfall / Flooding | Yes | Lower Niagara River |
| Jun 12, 2022 | 2.7M gal | Rainfall / Flooding | Yes | Lower Niagara River |
| Jun 12, 2022 | 10.0M gal | Rainfall / Flooding | Yes | Lower Niagara River |
| Jun 10, 2022 | 3.2M gal | Equipment Failure | Yes | Lower Niagara River |
| Jun 10, 2022 | 500K gal | Equipment Failure | Yes | Lower Niagara River |
| Jun 8, 2022 | 5.0M gal | Rainfall / Flooding | Yes | Lower Niagara River |
| Jun 8, 2022 | 1.6M gal | Rainfall / Flooding | Yes | Lower Niagara River |
| Jun 6, 2022 | 30.0M gal | Rainfall / Flooding | Yes | Lower Niagara River |
| Jun 6, 2022 | 21.3M gal | Rainfall / Flooding | Yes | Lower Niagara River |
| Jun 6, 2022 | 5.0M gal | Rainfall / Flooding | Yes | Lower Niagara River |
| Jun 3, 2022 | 532K gal | Equipment Failure | Yes | Lower Niagara River |
| May 29, 2022 | 2.0M gal | Equipment Failure | Yes | Lower Niagara River |
| May 29, 2022 | 4.1M gal | Equipment Failure | Yes | Lower Niagara River |
| May 29, 2022 | 2.0M gal | Equipment Failure | Yes | Lower Niagara River |
| May 29, 2022 | 2.0M gal | Equipment Failure | Yes | Lower Niagara River |
| May 27, 2022 | 5.0M gal | Equipment Failure | Yes | Lower Niagara River |
Source: New York (DEC). Volumes are utility-reported estimates. Some events lack precise coordinates or volumes.