NORWOOD – The invasive species Eurasian and variable leaf watermilfoil have been building up in Norwood Lake, and researchers at Clarkson University are studying ways to mitigate and control them.

To do so, they have placed three water quality sensors on the lake. They are marked by bright orange buoys floating on the surface. The three buoys, F1, F3, and Y1, are labeled with reflective stickers.

The buoys are in place on the lake and will remain there throughout the summer and fall.

One is in the mud flats along River Road near the island.

Another is near the shoreline along River Road just south of 1052 River Rd.

The last one is about 30 yards off of the shoreline opposite Lakeshore Drive and is roughly in line with Terry Le Fleur Collision Services.

The data these sensors are collecting are vital to their study, and the researchers – Michael Twiss, Kyle Mummau, and Samantha Impastato -- ask that everyone on the water keep an eye out for the orange buoys, and they would be grateful if they were left untouched.