Annual cleanup 2009- Tremendous turnout and successful cleanup. View the slideshow. Annual cleanup 2008- Another successful annual cleanup. View the slideshow. Annual cleanup 2007- Photo slideshow of the annual cleanup in 2007. Do you know why the Utica Marsh looks green? It is Duckweed. These plants are very simple, lacking an obvious stem or leaves, but consist of a small 'thalloid' or plate-like structure that floats on or just under the water surface, with or without simple rootlets Utica Marsh Annual Clean-Up, April, 2007 Each year volunteers from all over the community get together and help make the Utica Marsh a better place. Thank you to everyone who gave their time to this cause. The above slideshow contains pictures from the 2009 cleanup.