Lake Erie Microcystin Sampling Data

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Click on a sampling location on the map to view its data below. Data points labeled as "Non-Detectable" indicate a Microcystin sample that measured less than 0.1 μg/L.

We also have included data collected on Chlorophyll a concentrations, water temperature sampled via a hand thermometer, and secchi depth.

For 2015, samples are taken at up to 4 depths with respect to their sampling location's column depth: surface scum, surface, bottom for sites WE 2 thru 13, and for WE13, mid-column. Surface scum covers the very top of the column, surface is approximately 0.75 m deep, bottom is 1 m off the bottom of the lake, and mid-column is half-way between the surface and bottom measurement's depths. These depths are represented in columns of charts below.

WHO Recommended Guidelines (for reference)

Please note that the surface scum Chl A. and Particulate Microcystins vertical axes have greater ranges than the other depths.

Particulate and Dissolved Microcystins have different vertical axis ranges

WE2 WE4 WE6 WE8 WE12 WE13 WE14 WE15
Map of sampling sites in western Lake Erie

Click here to view sampling data from 2017

Click here to view sampling data from 2016

Click here to view sampling data from 2014 and previous years

Click on the map points above or buttons and location labels below to view data.


Station Name (Water Column Depth)

WE2 (~5 m)

Surface Scum (At top) Surface (0.75 m deep) Bottom (1 m off bottom of lake)

WE4 (~8 m)

Surface Scum (At top) Surface (0.75 m deep) Bottom (1 m off bottom of lake)

WE6 (~2.75 m)

Surface Scum (At top) Surface (0.75 m deep) Bottom (1 m off bottom of lake)

WE8 (~4 m)

Surface Scum (At top) Surface (0.75 m deep) Bottom (1 m off bottom of lake)

WE12 (~6 m)

Surface Scum (At top) Surface (0.75 m deep) Bottom (1 m off bottom of lake)

WE13 (~8.5 m)

Surface Scum (At Top) Surface (0.75 m deep) Mid-column Bottom (1 m off bottom of lake)

WE14 (~9.7 m)

Surface Scum (At Top) Surface (0.75 m deep)

WE15 (~3.4 m)

Surface Scum (At Top) Surface (0.75 m deep)
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