This cache is not at the posted coordinates, and neither location is the Kalamazoo River.
The Kalamazoo River is a river in the U.S. state of Michigan. The river is 130 miles long from the junction of its North and South branches to its mouth at Lake Michigan, with a total length extending to 178 miles when one includes the South Branch. The north and south branches of the Kalamazoo River originate within a few miles of each other. The south branch begins near North Adams in Moscow Township in northeastern Hillsdale County and flows north and west through Homer before joining the north branch at the forks of the Kalamazoo River in Albion. The North Branch begins near Farwell and Pine Hills lakes in southern Jackson County and flows north and west through Concord before reaching Albion in Calhoun County. It then flows through Kalamazoo and Allegan counties.
Archaeological evidence indicates humans have used the Kalamazoo River basin continuously for more than 11,000 years. At the time of European contact, the Kalamazoo River area was inhabited primarily by members of Potawatomi tribes. The Jesuit priest Father Jacques Marquette and his companions were probably the first Europeans to glimpse the mouth of the Kalamazoo in 1675 as they returned from Illinois. It wasn't until the late eighteenth century that the area was frequented by fur traders. By the early nineteenth century, there were several small communities along the river, including Kalamazoo. With the introduction of the railroad in the 1840s, the importance of the river for transportation diminished. Cache location: N 42° 6.242' W 85° 22.336'
Although the word Kalamazoo appears to be Native American in origin, the exact meaning is obscure and various definitions have been suggested. See the article on the Etymology of Kalamazoo for a detailed discussion of name origin theories.
The Kalamazoo River oil spill occurred in July 2010 when a pipeline operated by Enbridge (Line 6B) burst and flowed into Talmadge Creek, a tributary of the Kalamazoo River near Marshall, Michigan. A 6-foot break in the pipeline resulted in one of the largest inland oil spills in U.S. history (the largest was the 1991 spill near Grand Rapids, Minnesota). The pipeline carries diluted bitumen (dilbit), a heavy crude oil from Canada's Athabasca oil sands to the United States. Cleanup took five years. Following the spill, the volatile hydrocarbon diluents evaporated, leaving the heavier bitumen to sink in the water column. Thirty-five miles of the Kalamazoo River were closed for clean-up until June 2012, when portions of the river were re-opened. On March 14, 2013, the Environmental Protection Agency (EPA) ordered Enbridge to return to dredge portions of the river to remove submerged oil and oil-contaminated sediment. The EPA later estimated the spill to be in excess of 1 million gallons.
The cache hide is pretty much exactly what you'd expect for the location you will arrive at.