Although leaves can be seen in many different textures and sizes, typically a leaf is a thin, dorsiventrally flattened organ, borne above ground and specialized for photosynthesis.
As of the 2010 census, Kalamazoo had a total population of  74,262. Kalamazoo is the major city of the Kalamazoo-Portage Metropolitan Statistical Area, which has a population of 335,340 as of 2015.[6] Kalamazoo is equidistant from the major American cities of Chicago and Detroit, each less than 150 miles away.
The watershed includes 3,742 river miles and flows through and near the Kalamazoo-Portage, the Elkhart-Goshen, the South Bend and the St. Joseph/Benton Harbor metropolitan areas.According to the 2000 U.S. Census, 1,524,941 people live in the 15 counties of the watershed, with 53.6% living in Michigan.he watershed includes 3,742 river miles and flows through and near the Kalamazoo-Portage, the Elkhart-Goshen, the South Bend and the St. Joseph/Benton Harbor metropolitan areas.