All rankings
Maryland · Maryland (MDE)
Thurmont WWTP
Permit N/A
—
No waterway impact reported
Reported events
64
Total volume
240K gal
Reached waterways
0 (0%)
Reporting since
2005
What caused the overflows
Rainfall / Flooding
60
Equipment Failure
3
Other / Unknown
1
Reported overflow events (showing 64 of 64)
| Date | Volume | Cause | Reached water | Receiving water |
|---|---|---|---|---|
| May 14, 2025 | 240K gal | Other / Unknown | — | UT to Big Hunting Creek, b/t confluence w/ Bear Branch and Muddy Run. Use Class III-P |
| Dec 25, 2020 | — | Rainfall / Flooding | — | — |
| Feb 24, 2016 | — | Rainfall / Flooding | — | — |
| Feb 3, 2016 | — | Equipment Failure | — | — |
| Jan 31, 2013 | — | Rainfall / Flooding | — | — |
| Jan 31, 2013 | — | Rainfall / Flooding | — | — |
| Apr 16, 2011 | — | Rainfall / Flooding | — | — |
| Apr 16, 2011 | — | Rainfall / Flooding | — | — |
| Apr 16, 2011 | — | Rainfall / Flooding | — | — |
| Apr 16, 2011 | — | Rainfall / Flooding | — | — |
| Apr 16, 2011 | — | Rainfall / Flooding | — | — |
| Apr 16, 2011 | — | Rainfall / Flooding | — | — |
| Mar 10, 2011 | — | Rainfall / Flooding | — | — |
| Mar 10, 2011 | — | Rainfall / Flooding | — | — |
| Mar 10, 2011 | — | Rainfall / Flooding | — | — |
| Mar 10, 2011 | — | Rainfall / Flooding | — | — |
| Mar 10, 2011 | — | Rainfall / Flooding | — | — |
| Dec 1, 2010 | — | Rainfall / Flooding | — | — |
| Dec 1, 2010 | — | Rainfall / Flooding | — | — |
| Dec 1, 2010 | — | Rainfall / Flooding | — | — |
| Sep 24, 2010 | — | Rainfall / Flooding | — | — |
| Sep 24, 2010 | — | Rainfall / Flooding | — | — |
| Sep 24, 2010 | — | Rainfall / Flooding | — | — |
| Jul 9, 2010 | — | Equipment Failure | — | — |
| Mar 12, 2010 | — | Rainfall / Flooding | — | — |
| Mar 12, 2010 | — | Rainfall / Flooding | — | — |
| Mar 12, 2010 | — | Rainfall / Flooding | — | — |
| Mar 12, 2010 | — | Rainfall / Flooding | — | — |
| Mar 12, 2010 | — | Rainfall / Flooding | — | — |
| Mar 12, 2010 | — | Rainfall / Flooding | — | — |
| Jan 25, 2010 | — | Rainfall / Flooding | — | — |
| Jan 25, 2010 | — | Rainfall / Flooding | — | — |
| Jan 25, 2010 | — | Rainfall / Flooding | — | — |
| Dec 26, 2009 | — | Rainfall / Flooding | — | — |
| Dec 26, 2009 | — | Rainfall / Flooding | — | — |
| Dec 26, 2009 | — | Rainfall / Flooding | — | — |
| Dec 26, 2009 | — | Rainfall / Flooding | — | — |
| Dec 26, 2009 | — | Rainfall / Flooding | — | — |
| Dec 9, 2009 | — | Rainfall / Flooding | — | — |
| Dec 11, 2008 | — | Rainfall / Flooding | — | — |
| Dec 11, 2008 | — | Rainfall / Flooding | — | — |
| Dec 11, 2008 | — | Rainfall / Flooding | — | — |
| Apr 20, 2008 | — | Rainfall / Flooding | — | — |
| Apr 15, 2007 | — | Rainfall / Flooding | — | — |
| Mar 3, 2007 | — | Rainfall / Flooding | — | — |
| Mar 3, 2007 | — | Rainfall / Flooding | — | — |
| Mar 3, 2007 | — | Rainfall / Flooding | — | — |
| Mar 3, 2007 | — | Rainfall / Flooding | — | — |
| Mar 3, 2007 | — | Rainfall / Flooding | — | — |
| Nov 29, 2005 | — | Rainfall / Flooding | — | — |
| Nov 29, 2005 | — | Rainfall / Flooding | — | — |
| Nov 29, 2005 | — | Rainfall / Flooding | — | — |
| Nov 29, 2005 | — | Rainfall / Flooding | — | — |
| Nov 29, 2005 | — | Rainfall / Flooding | — | — |
| Apr 2, 2005 | — | Rainfall / Flooding | — | — |
| Mar 28, 2005 | — | Rainfall / Flooding | — | — |
| Mar 28, 2005 | — | Rainfall / Flooding | — | — |
| Mar 23, 2005 | — | Rainfall / Flooding | — | — |
| Mar 23, 2005 | — | Rainfall / Flooding | — | — |
| Jan 22, 2005 | — | Equipment Failure | — | — |
| Jan 14, 2005 | — | Rainfall / Flooding | — | — |
| Jan 14, 2005 | — | Rainfall / Flooding | — | — |
| Jan 14, 2005 | — | Rainfall / Flooding | — | — |
| Jan 14, 2005 | — | Rainfall / Flooding | — | — |
Source: Maryland (MDE). Volumes are utility-reported estimates. Some events lack precise coordinates or volumes.