We
took a bathymetric map of Big Lake and we colored in places for depths
under 24'. We used another color for depths greater than or equal to
25'. 25' is approximately the greatest depth that Eurasian water
milfoil can grow. This proves that if Eurasian water milfoil did get in
Big Lake, it would effect over 90% of the lake. | 
Color coded map of Big Lake in Washington County. |