Anoxic Events

Anoxic Event Wheatley River - July 14, 2016
Image caption: 
Anoxic Event Wheatley River - July 14, 2016

Anoxic events are a common occurrence in Island estuaries during the summer months.  The symptoms of an anoxic event include:

  • milky white or green discolouration of the water, 
  • H2S or 'rotten turnip' odour, and                        
  • low (near zero) dissolved oxygen readings.

A list of sites that recorded anoxic events during 2016 is provided below.  A map of these sites is also available.

Historial information, from 2006 to 2016, is available. A map that highlights the intensity of anoxic events across PEI from 2012 to 2016 is also provided.
Please note that information provided may not capture every anoxic estuary in PEI for a particular year. Some events may not have not been reported to, or documented by, the Department of Communities, Land and Environment.

2016* Anoxic Events

  • Baltic River/Hunter's Creek (Darnley Basin)
  • Barbara Weit River 
  • Boughton River 
  • Covehead Bay
  • French River
  • Hope River
  • Hunter River (River Clyde) 
  • Indian River 
  • Midgell River
  • Mill/Hills River, including Long Creek
  • Montrose/Kildare River (including the Huntley branch)
  • Morell River
  • Paynter's Pond**
  • Southwest River, including Durant's Creek and Tuplin Creek
  • St. Peter's Bay
  • Trout River (Coleman)
  • Trout (Stanley) River, including Founds River and Granville Creek 
  • Waite's Creek
  • Wheatley River
  • Winter River

* Last updated March 15, 2017

** Freshwater Pond

Who can I contact for more information?

Cindy Crane (Surface Water Biologist)
4th Floor, Jones Building
11 Kent Street
Charlottetown, PEI C1A 7N8
Telephone: (902) 368-5179
Fax: (902) 368-5830

Published date: 
August 26, 2015
Communities, Land and Environment department logo

General Inquiries

Department of Communities, Land and Environment
4th Floor, Jones Building
11 Kent Street
PO Box 2000
Charlottetown, PE   C1A 7N8

Phone: 1-866-368-5044
Fax: (902) 368-5830