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Alexis Porter, left, and Mya Harmer, staff members with the Steinman Lab, prepare to launch a boat near a turtle at Nichols Lake in Newaygo County on June 24. The work is part of AWRI’s inland lake salt survey. (Photo releases on file)

Vessel Scientific Equipment

Visiting students measure water quality in the D.J. Angus's research laboratory.
An AWRI instructor demonstrates the use of a plankton tow net.
An AWRI deckhand and visiting student collect water using a Van Dorn sampler onboard the D.J. Angus research vessel.
Jamie Cross displays a Florel-Ule scale, a series of colored water in vials that provides a measurement of water clarity not requiring expensive machines..
Page last modified April 17, 2026