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Live Buoy Data

Both LEA buoys were successfully deployed by May 9 and removed from the water on November 2, 2023. The buoys are in storage and will be redeployed spring 2024. Static graphs of temperature, oxygen, and chlorophyll conditions for the 2023 season are available through the links below.

Select buoy location to view data:

What are they?

These two automated testing buoys are part of a suite of advanced monitoring initiatives undertaken by LEA to better understand lakes and the factors that affect water quality in real time. Following ice-out in the spring, these buoys are deployed on Highland Lake and Long Lake and continuously monitor oxygen and temperature concentrations throughout the water column. They also measure chlorophyll, which indicates how much algae is present in the water and the Highland Buoy has light sensors in and above the water to measure clarity. The data is stored on  internal computers and sent back to LEA every 15 minutes through cellular signals. Both buoys are powered by 3, 10-watt solar panels and a rechargeable battery.

The top image shows the temperature structure of Highland Lake from April-November. The vertical axis is depth and the horizontal axis is time. The blue color from the top to the bottom indicates the lake mixed in October. The lower image shows oxygen levels over the same time period. The dark blue on the bottom shows the level and extent of time that anoxia occurred (no oxygen).

What do they do?

This information allows us to map out oxygen and temperature concentrations throughout the growing season which is important in understanding the factors that control algae growth as well as internal lake structure and mixing. Tying the data to weather conditions lets us see the effects of wind, precipitation and storm events in real time – thus allowing for a better understanding and explanation of conditions in the lake.

The top image shows the temperature at different depth from April-November. When the lines come together as they do on the right hand side, this indicates the lake is totally mixed. The bottom graph shows relative algae abundance over the course of the same time period.
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