DirtyWaterWatch

Vermont / Waters /

Clarendon River

Stream in Vermont · near Wallingford

Status now

No current report

At least one source we follow covers this water, and nothing it reports applies right now.

Why this colour: No current report: nothing a covering source reports colours this water now. How long a water stays coloured, and why

Source: VT DEC Public Alerts (untreated discharge alerts) on the Sewage Overflows report page, last answered 2026-11-02 11:56 UTC. Status computed by DirtyWaterWatch as of 2026-11-02 11:56 UTC.

It is not a finding about the water. Discharges go unreported, reports arrive late, and storm runoff carries bacteria too. Follow posted signs and local health advice.

Rivers are not coloured as a whole: a discharge colours a modeled stretch downstream of its outfall, listed below when there is one.

As of Nov 2, 2026, 6:56 AM EST.

Map

Source: water outlines from OpenBoatLaunch and OpenStreetMap contributors (ODbL); outfalls from EPA ECHO and the state outfall layers; modeled reaches computed by DirtyWaterWatch from USGS NLDI, NHDPlus and the nearest USGS gauge (Jobson 1996); basemap OpenFreeMap and OpenMapTiles.

Outfalls are small brown dots.

Modeled downstream reaches on Clarendon River

No discharge colours a modeled reach on this water now.

The last 90 days

Last 90 days, hour by hour. Red: advisory in effect; yellow: caution; hatched yellow: unresolved, no end reported; grey: no current report; hatched purple: a source was not updating.

No red or yellow period in this span.

Source: hourly statuses computed by DirtyWaterWatch (pipeline build/status.py) from the events linked above and the rules on the methods page; history as of 2026-11-02 11:56 UTC.

Discharges over the years

  • Discharge events, last 12 months1Dec 2025 to Nov 2026
  • Days with a discharge, last 12 months3Dec 2025 to Nov 2026
  • Hours under advisory, last 12 months101Dec 2025 to Nov 2026
  • 2026 season under advisory0.0%May to October; 0 h

Discharge events per month

4 events, Jan 2022 to Nov 2026. Counted from 4 verified or annual reports.

  • Combined sewer overflow
  • Sanitary sewer overflow
  • Bypass, blended or other

Source: Vermont DEC sewage overflows page. Covered 2022-01-01 to 2026-11-02.

Show table
Discharge events per month
MonthCombined sewer overflowSanitary sewer overflowBypass, blended or otherTotalCounted fromCoverage
Jan 20220000
Feb 20220011Verified or annual reports
Mar 20220000
Apr 20220000
May 20220000
Jun 20220000
Jul 20220000
Aug 20220000
Sep 20220000
Oct 20220000
Nov 20220000
Dec 20220000
Jan 20230000
Feb 20230000
Mar 20230000
Apr 20230000
May 20230000
Jun 20230000
Jul 20230000
Aug 20230000
Sep 20230000
Oct 20230000
Nov 20230101Verified or annual reports
Dec 20230000
Jan 20240000
Feb 20240000
Mar 20240000
Apr 20240000
May 20240000
Jun 20240000
Jul 20240000
Aug 20240000
Sep 20240000
Oct 20240000
Nov 20240000
Dec 20240000
Jan 20250000
Feb 20250000
Mar 20250000
Apr 20250000
May 20250011Verified or annual reports
Jun 20250000
Jul 20250000
Aug 20250000
Sep 20250000
Oct 20250000
Nov 20250000
Dec 20250000
Jan 20260000
Feb 20260000
Mar 20260000
Apr 20260011Verified or annual reports
May 20260000
Jun 20260000
Jul 20260000
Aug 20260000
Sep 20260000
Oct 20260000
Nov 20260000

Hours under advisory per month

Hours this water was under an advisory, by the map's red rules.

  • Advisory in effect

1 discharge events have no reported end and no ongoing status; under the status rules they set caution, not an advisory, and add no hours here.

Source: Vermont DEC sewage overflows page. Covered 2016-01-05 to 2026-11-02.

Show table
Hours under advisory per month
MonthHours under advisoryFrom discharge windowsHours in monthCoverage
Jan 202200744
Feb 20224848672
Mar 202200744
Apr 202200720
May 202200744
Jun 202200720
Jul 202200744
Aug 202200744
Sep 202200720
Oct 202200744
Nov 202200720
Dec 202200744
Jan 202300744
Feb 202300672
Mar 202300744
Apr 202300720
May 202300744
Jun 202300720
Jul 202300744
Aug 202300744
Sep 202300720
Oct 202300744
Nov 20235252720
Dec 202300744
Jan 202400744
Feb 202400696
Mar 202400744
Apr 202400720
May 202400744
Jun 202400720
Jul 202400744
Aug 202400744
Sep 202400720
Oct 202400744
Nov 202400720
Dec 202400744
Jan 202500744
Feb 202500672
Mar 202500744
Apr 202500720
May 20259898744
Jun 202500720
Jul 202500744
Aug 202500744
Sep 202500720
Oct 202500744
Nov 202500720
Dec 202500744
Jan 202600744
Feb 202600672
Mar 202600744
Apr 2026101101720
May 202600744
Jun 202600720
Jul 202600744
Aug 202600744
Sep 202600720
Oct 202600744
Nov 20260032

Days with a discharge per month

A day counts when any counted discharge was under way on it (start to reported end, local time); an event with no end counts its start day.

Source: Vermont DEC sewage overflows page. Covered 2022-01-01 to 2026-11-02.

Show table
Days with a discharge per month
MonthDays with a dischargeCoverage
Jan 20220
Feb 20221
Mar 20220
Apr 20220
May 20220
Jun 20220
Jul 20220
Aug 20220
Sep 20220
Oct 20220
Nov 20220
Dec 20220
Jan 20230
Feb 20230
Mar 20230
Apr 20230
May 20230
Jun 20230
Jul 20230
Aug 20230
Sep 20230
Oct 20230
Nov 20231
Dec 20230
Jan 20240
Feb 20240
Mar 20240
Apr 20240
May 20240
Jun 20240
Jul 20240
Aug 20240
Sep 20240
Oct 20240
Nov 20240
Dec 20240
Jan 20250
Feb 20250
Mar 20250
Apr 20250
May 20253
Jun 20250
Jul 20250
Aug 20250
Sep 20250
Oct 20250
Nov 20250
Dec 20250
Jan 20260
Feb 20260
Mar 20260
Apr 20263
May 20260
Jun 20260
Jul 20260
Aug 20260
Sep 20260
Oct 20260
Nov 20260

Discharge events per year, 2016 to 2026

10 events, 2016 to 2026.

  • Combined sewer overflow
  • Sanitary sewer overflow
  • Bypass, blended or other
  • Partly covered or sparse source

Source: Vermont DEC sewage overflows page. Covered 2016-01-05 to 2026-11-02.

Show table
Discharge events per year, 2016 to 2026
YearCombined sewer overflowSanitary sewer overflowBypass, blended or otherTotalCoverage
20160000Partly covered or sparse source
20170022
20180000
20190011
20200022
20210011
20220011
20230101
20240000
20250011
20260011

Reported volume per year

Gallons, summed from the 2 events that gave a number (8 did not).

  • Partly covered or sparse source

8 of 10 events gave no volume as a number (8 gave a range); only numbers are summed. Vermont volumes were range buckets before 2024 (">10,000 to 100,000 gallons"); those records have no number and are not summed.

Source: Vermont DEC sewage overflows page. Covered 2016-01-05 to 2026-11-02.

Show table
Reported volume per year
YearGallonsEvents with a numberEvents withoutCoverage
2016000Partly covered or sparse source
2017002
2018000
2019001
2020002
2021001
2022001
2023001
2024000
20252,000,00010
2026700,00010

Hours under advisory per year

Hours under advisory each year; 2026 to date.

  • Advisory in effect
  • Partly covered or sparse source

1 discharge events have no reported end and no ongoing status; under the status rules they set caution, not an advisory, and add no hours here.

Source: Vermont DEC sewage overflows page. Covered 2016-01-05 to 2026-11-02.

Show table
Hours under advisory per year
YearHours under advisoryShare of the yearCoverage
201600.0%Partly covered or sparse source
2017971.1%
201800.0%
2019630.7%
2020480.5%
2021660.7%
2022480.6%
2023520.6%
202400.0%
2025981.1%
20261011.4%

Share of the May to October season under advisory

Share of the hours from May 1 to October 31 with an advisory in effect.

  • Advisory in effect

1 discharge events have no reported end and no ongoing status; under the status rules they set caution, not an advisory, and add no hours here.

Source: Vermont DEC sewage overflows page. Covered 2016-01-05 to 2026-11-02.

Show table
Share of the May to October season under advisory
SeasonShare under advisoryHours under advisoryHours coveredSeason hoursPartly covered
20160.0%04,4164,416
20171.1%484,4164,416
20180.0%04,4164,416
20191.4%634,4164,416
20201.1%484,4164,416
20210.0%04,4164,416
20220.0%04,4164,416
20230.0%04,4164,416
20240.0%04,4164,416
20252.2%984,4164,416
20260.0%04,4164,416

Discharge events by calendar month, all years

Every counted discharge event, by the calendar month it began.

Months are summed over every year a source covers; the table gives the number of years behind each month.

Source: Vermont DEC sewage overflows page. Covered 2016-01-05 to 2026-11-02.

Show table
Discharge events by calendar month, all years
MonthEventsYears of records
Jan211
Feb111
Mar011
Apr111
May411
Jun011
Jul011
Aug011
Sep011
Oct011
Nov211
Dec010

Discharge events by outfall

The 10 outfalls with the most events of 10, all years.

Source: Vermont DEC sewage overflows page. Covered 2016-01-05 to 2026-11-02.

Show table
Discharge events by outfall
OutfallEvents
Clarendon river1
Wastewater Treatment Plant1
Clarendon ave.1
Wastewater Treatment Facility1
Effluent1
Treatment plant outfall/Clarendon River1
Route 4A Center Rutland1
Outfall in Clarendon River1
WWTF Effluent1
336 Clearwater Blvd1
How these charts are counted

Discharge events are counted once: where a source publishes both public notices and verified reports (MassDEP, Vermont DEC), a discharger's month with any verified report counts its verified reports only, and other months count notices. Revisions are folded into the record they revise, and EPA copies of a state report are not counted twice. Monthly and yearly totals (Maine DEP, EPA discharge monitoring reports, Portsmouth) are shown on their own and never added to the event counts. Hours under advisory follow the map's red rules. A muted band marks periods no source covers: a gap there is missing data, not a quiet month.

  • Vermont DEC sewage overflows page: 2016-01-05 to now

Every event on Clarendon River

Events placed on Clarendon River, newest first
StartEnd Discharger OutfallTypeVolumeSourceLinks
not reported (reported Apr 3, 2026, 4:09 PM EDT) not reported West Rutland effluent outfall Unclassified recordrevised not reported West Rutland (operator public alert on the VT DEC Sewage Overflows page; not yet reviewed by DEC) via VT DEC Public Alerts (untreated discharge alerts) on the Sewage Overflows report page, record alert:4223, reported Apr 3, 2026, 4:09 PM EDT, retrieved 2026-11-02 10:55 UTC · notice
Full record (older than 180 days, so no page of its own)

This record in the archive list

Apr 2, 2026, 8:00 AM EDT Apr 4, 2026, 1:15 PM EDT West Rutland Clarendon river Treatment plant bypass 700,000 gal West Rutland (incident report on the VT DEC Sewage Overflows page; reviewed by DEC) via VT DEC Public Alerts (untreated discharge alerts) on the Sewage Overflows report page, record incident:6982, the source gives no report time, retrieved 2026-11-02 10:55 UTC · notice
Full record (older than 180 days, so no page of its own)

This record in the archive list

May 11, 2025, 12:00 PM EDT May 13, 2025, 2:00 PM EDT West Rutland Wastewater Treatment Plant Treatment plant bypass 2 million gal West Rutland (incident report on the VT DEC Sewage Overflows page; reviewed by DEC) via VT DEC Public Alerts (untreated discharge alerts) on the Sewage Overflows report page, record incident:6800, the source gives no report time, retrieved 2026-11-02 10:55 UTC · notice
Full record (older than 180 days, so no page of its own)

This record in the archive list

Nov 2, 2023, 7:00 AM EDT Nov 2, 2023, 11:00 AM EDT West Rutland Clarendon ave. Sanitary sewer overflow “>100 to 1,000 gallons” West Rutland (incident report on the VT DEC Sewage Overflows page; reviewed by DEC) via VT DEC Public Alerts (untreated discharge alerts) on the Sewage Overflows report page, record incident:6420, the source gives no report time, retrieved 2026-11-02 10:55 UTC · notice
Full record (older than 180 days, so no page of its own)

This record in the archive list

not reported (reported Feb 18, 2022, 9:32 AM EST) not reported West Rutland Wastewater Treatment Facility Outfall Unclassified record not reported West Rutland (operator public alert on the VT DEC Sewage Overflows page; not yet reviewed by DEC) via VT DEC Public Alerts (untreated discharge alerts) on the Sewage Overflows report page, record alert:2731, reported Feb 18, 2022, 9:32 AM EST, retrieved 2026-11-02 10:55 UTC · notice
Full record (older than 180 days, so no page of its own)

This record in the archive list

Feb 16, 2022, 6:45 AM EST Feb 16, 2022, 7:00 AM EST West Rutland Wastewater Treatment Facility Treatment plant bypass “>10,000 to 100,000 gallons” West Rutland (incident report on the VT DEC Sewage Overflows page; reviewed by DEC) via VT DEC Public Alerts (untreated discharge alerts) on the Sewage Overflows report page, record incident:6116, the source gives no report time, retrieved 2026-11-02 10:55 UTC · notice
Full record (older than 180 days, so no page of its own)

This record in the archive list

Nov 27, 2021, 2:00 PM EST Nov 28, 2021, 7:30 AM EST West Rutland Effluent Treatment plant bypass “10,000 to 100,000 ga” West Rutland (incident report on the VT DEC Sewage Overflows page; reviewed by DEC) via VT DEC Public Alerts (untreated discharge alerts) on the Sewage Overflows report page, record incident:6101, the source gives no report time, retrieved 2026-11-02 10:55 UTC · notice
Full record (older than 180 days, so no page of its own)

This record in the archive list

May 13, 2020, 7:30 AM EDT May 13, 2020, 7:45 AM EDT West Rutland Treatment plant outfall/Clarendon River Treatment plant bypass “>10,000 to 100,000 gallons” West Rutland (incident report on the VT DEC Sewage Overflows page; reviewed by DEC) via VT DEC Public Alerts (untreated discharge alerts) on the Sewage Overflows report page, record incident:5851, the source gives no report time, retrieved 2026-11-02 10:55 UTC · notice
Full record (older than 180 days, so no page of its own)

This record in the archive list

not reported (reported Jan 21, 2020, 9:51 AM EST) not reported West Rutland Route 4A. West Rutland, Rutland Town line. Unclassified record not reported West Rutland (operator public alert on the VT DEC Sewage Overflows page; not yet reviewed by DEC) via VT DEC Public Alerts (untreated discharge alerts) on the Sewage Overflows report page, record alert:1525, reported Jan 21, 2020, 9:51 AM EST, retrieved 2026-11-02 10:55 UTC · notice
Full record (older than 180 days, so no page of its own)

This record in the archive list

not reported (reported Jan 21, 2020, 9:49 AM EST) not reported West Rutland Route 4A. West Rutland, Rutland Town line. Unclassified record not reported West Rutland (operator public alert on the VT DEC Sewage Overflows page; not yet reviewed by DEC) via VT DEC Public Alerts (untreated discharge alerts) on the Sewage Overflows report page, record alert:1524, reported Jan 21, 2020, 9:49 AM EST, retrieved 2026-11-02 10:55 UTC · notice
Full record (older than 180 days, so no page of its own)

This record in the archive list

Jan 19, 2020, 1:00 AM EST Jan 19, 2020, 9:00 AM EST West Rutland Route 4A Center Rutland Unclassified record “>1,000 to 10,000 gallons” West Rutland (incident report on the VT DEC Sewage Overflows page; reviewed by DEC) via VT DEC Public Alerts (untreated discharge alerts) on the Sewage Overflows report page, record incident:4818, the source gives no report time, retrieved 2026-11-02 10:55 UTC · notice
Full record (older than 180 days, so no page of its own)

This record in the archive list

May 2, 2019, 6:00 AM EDT May 2, 2019, 9:00 PM EDT West Rutland Outfall in Clarendon River Treatment plant bypass “>10,000 to 100,000 gallons” West Rutland (incident report on the VT DEC Sewage Overflows page; reviewed by DEC) via VT DEC Public Alerts (untreated discharge alerts) on the Sewage Overflows report page, record incident:4606, the source gives no report time, retrieved 2026-11-02 10:55 UTC · notice
Full record (older than 180 days, so no page of its own)

This record in the archive list

May 25, 2017, 7:00 AM EDT May 25, 2017, 7:20 AM EDT West Rutland WWTF Effluent Treatment plant bypass “>10,000 to 100,000 gallons” West Rutland (incident report on the VT DEC Sewage Overflows page; reviewed by DEC) via VT DEC Public Alerts (untreated discharge alerts) on the Sewage Overflows report page, record incident:3176, the source gives no report time, retrieved 2026-11-02 10:55 UTC · notice
Full record (older than 180 days, so no page of its own)

This record in the archive list

Jan 5, 2017, 7:00 AM EST Jan 5, 2017, 8:00 AM EST West Rutland 336 Clearwater Blvd Treatment plant bypass “>1,000 to 10,000 gallons” West Rutland (incident report on the VT DEC Sewage Overflows page; reviewed by DEC) via VT DEC Public Alerts (untreated discharge alerts) on the Sewage Overflows report page, record incident:3125, the source gives no report time, retrieved 2026-11-02 10:55 UTC · notice
Full record (older than 180 days, so no page of its own)

This record in the archive list

Outfalls on this water

No outfall in the registry is matched to this water.

Launches

Source: OpenBoatLaunch launch records (public agency data and OpenStreetMap, ODbL). · Clarendon River on OpenBoatLaunch

Sources covering this water

14 events placed on this water in this build.