Mississippi Valley Conservation Authority

Lake Monitoring Program

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MVCA monitors forty-four lakes on a five year cycle to identify and document long-term trends in water quality. The key parameters (total phosphorus, dissolved oxygen, temperature and water clarity) will provide a simple, cost-effective means to quantify the extent of aging of the lakes.

Once a lake is sampled MVCA is able to classify it as oligotrophic, mesotrophic, or eutrophic, depending on age and whether they have little, some, or a lot of life, respectively. Oligotrophic lakes are the youngest, mesotrophic lakes are middle-aged lakes that are less deep and more fertile than oligotrophic lakes, and eutrophic lakes (the oldest lakes) are most fertile and even shallower than mesotrophic lakes.

The collected data will be put into a central database to identify long-term trends in water quality. Water quality results will be published in a concise, easy to understand State of the Lake Report and will be made available to shoreline residents and interested parties.

Testing Protocol


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  1. Mississippi Valley Conservation Authority 13250 Points



Areas monitored

Mississippi Valley, Ontario

Locations & Observations

Locations Last observation made
Ardoch Lake Main Basin : ALMB 2017-08-16 18:15 UTC Contributed 25 of 26 Observations
Bennett Lake North Basin : BLNB 2017-09-15 14:40 UTC Contributed 15 of 18 Observations
Bennett Lake South Basin : BLSB 2017-09-15 15:15 UTC Contributed 14 of 17 Observations
Big Gull Lake East Basin : BGLEB 2017-07-23 00:12 UTC Contributed 21 of 22 Observations
Big Gull Lake Main Basin : BGLMB 2018-09-04 15:15 UTC Contributed 22 of 42 Observations
Big Gull Lake West Basin : BGLWB 1999-08-13 16:00 UTC Contributed 22 of 22 Observations
Black Lake Main Basin : BLMB 2011-08-09 16:00 UTC Contributed 14 of 14 Observations
Blue Lake Main Basin : BLMB 2009-06-11 16:00 UTC Contributed 15 of 15 Observations
Buckshot Lake Main Basin : BUMB 2017-08-31 15:15 UTC Contributed 19 of 22 Observations
Canonto Lake North Basin : CLNB 2016-09-19 14:30 UTC Contributed 15 of 15 Observations