Data Portal

Select your parameter. Available stations will populate in the table to the right. Select a station within the table to reveal pop-up graph below. On the Multi-Graph bar below, you can select Favorites, Recently Clicked and Nearby Stations from there. Clicking on that station's graph will bring you to the zoom and download pop-up window. Data formats includes CSV, WaterML2.0, Plain Text, HTML and JSON.

Select the STAR to add/remove your Favourite stations of any parameter. The CHECK MARK icon will show what stations you've recently clicked. The bottom SELECT BY AREA icon will allow you to draw a rectangle on the map to select a group of stations. The mini graph bar is desinged to hold these selections by using cookies. By disabling cookies for this site, you will not have this functionality. No other information is stored beyond the use of recalling Favourite and Recently Clicked stations.

Parameter Descriptions

Blue-Green Algae: Measured in micrograms per litre (ug/l), this represents a concentration of blue green algae in water and is used as an idicator of lake health. Excessive amounts can be harmful and typically indicate nutrient enridhment. For further information, click here.
Chlorophyll-a: Measured in micrograms per litre (ug/l), this represents a concentration of chlorophyll in water and is an indication of the nutrient status and productivity of the lake.
Phosphorus: Measured in milligrams per litre (mg/l), this represents a concentration of phosphorus in water. Phosphorus is a common nutrient that when present in high levels can promote excessive growth of aquatic plants and algae. For more information, click here.
Dissolved Oxygen: Measured in milligrams per litre (mg/l), this represents a concentration of oxygen dissolved or mixed in water. All aquatic organisms require a certain concentration of dissolved oxygen to survive. For more information, click here.

Chloride: Measured in milligrams per litre (mg/l), this represents a concentration of chloride in water. Excessive levels of chloride in our rivers and lake are a result of winter salting (sodium chloride).
Conductivity at 25C: Measured in microsiemens per centimetre (us/cm), this represents a measure of the electrical conductance of water. Conductivity is affected by the amount of dissolved solids in the water, the most common being chloride.

Secchi Disk Depth: Measured in metres (m), this represents a measurement of the clarity or light penetration in water. The higher the value the greater the clarity or light penetration.
Turbidity: Measured in Nephelometric Turbidity Units (NTU), this is a measure of the amount of fine particulate or cloudiness of water.
Total Dissolved Solids: Measured in milligrams per litre (mg/l), this represents any minerals, salts, metals, cations or anions dissolved in the water including organic matter.

pH or Acidity/Alkalinity: Measured on a log scale where 7 is neutral, values lower represent acidity and values above are alkaline. Due to the geology around Lake Simcoe, the limestone (Calcium Carbonate) contributes to more alkaline readings.
Water Temperature: Measured in degrees Celsius (C) this is a single measure of water temperature typically collected at the same time as other samplings to establish or rule out correlations.

* This Data Portal is designed to share what information we have collected through field research, instrumentation and long term studies on a variety of factors that affect the health and well-being of this ecosystem. By entering this site, you acknowledge that the data available is provisional in nature. LSRCA assumes no responsibility for the correctness of the information contained in this website. LSRCA will not be held liable to any user of this information, regardless of the purpose.