banner MPWA Home Page MPWA Home Page


Lake Water Quality

Lake water quality is an excellent indicator of the intensity of activities in the watershed. Monitoring these activities over time provides insights into the overall health of the watershed.

As with rivers, the presence and amount of phosphorus in lakes is a result of a combination of variables, including the source water and the local natural environment, as well as human impacts. The map below shows the results from measurements of a number of lakes, and gives an indication of comparative phosphorus amounts in different parts of the watershed.33 The amount of phosphorus in lakes is related to the intensity of the human footprint in the watershed.

No bacteria data were available for lakes in the Mighty Peace watershed. The northernmost samples are from Alberta Health's recreational beach monitoring program in the vicinity of Edmonton.

Note: The index on the map represents the lowest (0) to the highest (10) lake phosphorus concentrations in Alberta. Water quality of lakes in the Peace & Slave River Watershed were plotted on this scale. Each point represents a lake that was sampled at least three times during a summer either before or after the year 2000.

Additional lake sampling throughout the watershed.
CPPENV. 2013. Drivers of lake water quality in the Beaver River watershed of Alberta. Report prepared for the Beaver River Watershed Alliance, Bonnyville, AB

Phosphorus in watershed lakes

Hover to magnify map
Source: ESRD