This November theme show at the UMVA Gallery, at the Portland Media Center was juried by Susan Smith, artist and Professor of art at the Univeristy of Maine, Orono campus. My painting Water Wheel fits the them nicely and heralds the fact that many rivers and suitable streams in Maine had grist mills that operated with water wheels. Grist Mills were extremeny imporant in Maine and many other states as well. See this link wll help you get a better understanding of grist mills: https://www.old-mill.com/oldmill-blog/what-is-a-grist-mill
Mills are coming back, many renovated into housing but others used for start ups and small business operations all over Maine, and some are actually functioning now as new grist mills: