{{Use American English|date=February 2025}} The '''Days River''' is a {{convert|30.1|mi|km|adj=mid|-long}}<ref name=NHD>U.S. Geological Survey. National Hydrography Dataset high-resolution flowline data. [http://viewer.nationalmap.gov/viewer/ The National Map] {{webarchive|url=https://web.archive.org/web/20120329155652/http://viewer.nationalmap.gov/viewer/ |date=2012-03-29 }}, accessed December 19, 2011</ref> river on the Upper Peninsula of the U.S. state of Michigan.
It is a narrow, rocky, and scenic river that supports brook, steelhead and rainbow trout, smelt, and white and longnose suckers in the spring. The river runs south to its mouth on Little Bay De Noc on Lake Michigan at {{coord|45|53|37|N|86|59|5|W |region:US-MI_type:waterbody |display=inline,title|name=Days River mouth}}, near Masonville Township. There is a low-head dam by Gladstone Golf Course installed in 1978 to prevent upstream migration of invasive sea lamprey.
Days River was named for John Day, a trapper and pioneer settler.<ref>{{cite book|author=Chicago and North Western Railway Company|title=A History of the Origin of the Place Names Connected with the Chicago & North Western and Chicago, St. Paul, Minneapolis & Omaha Railways|url=https://books.google.com/books?id=OspBAQAAMAAJ&pg=PA46|year=1908|page=46}}</ref>
==References== {{Reflist}}
== External links == *[http://www.topoquest.com/map.asp?lat=45.89463&lon=-86.97911&datum=nad27&u=7&layer=DRG&s=50 TopoQuest topographic map]
{{authority control}}
Category:Rivers of Michigan Category:Rivers of Delta County, Michigan Category:Tributaries of Lake Michigan
{{DeltaCountyMI-geo-stub}} {{Michigan-river-stub}}