Coles Creek (also known as Cole's Creek) is a tributary of Fishing Creek, in Columbia County, Pennsylvania and Sullivan County, Pennsylvania, in the United States. It is long and is the first named tributary of Fishing Creek downstream of where East Branch Fishing Creek and West Branch Fishing Creek meet to form Fishing Creek. The creek is on the edge of Columbia County and parts of its watershed are in Luzerne County. The watershed of Coles Creek has an area of 11.6 square miles. There are of streams in the watershed. Most of the watershed is over rock of the Catskill Formation, although a small part of it is over rocks of the Huntley Mountain Formation. The water temperature of the creek ranges from slightly under to slightly under . Coles Creek is named after Ezekiel Cole. Course Coles Creek begins on Central Mountain in southeastern Sullivan County, Pennsylvania and flows south into Sugarloaf Township, Columbia County, near the border between Columbia County, Luzerne County, and Sullivan County. The creek flows south, leaving Central Mountain behind, to Pennsylvania Route 118, where it receives the tributary Chimneystack Run (which also starts on Central Mountain). It turns southwest and begins flowing parallel to Pennsylvania Route 487. It receives Ashelman Run and Fellow Hollow before flowing through the community of Tri Mills. Downstream of Tri Mills, it receives Hess Hollow and continues southwest to the community of Coles Creek. Shortly afterwards, the creek reaches its confluence with Fishing Creek. Hydrology Between May 2010 and July 2011, the water temperature of Coles Creek ranged from slightly under to nearly . The temperature was under in January 2011, February 2011, and March 2011, and approached in August 2010. The concentration of dissolved oxygen in Coles Creek between May 2010 and July 2011 ranged from slightly under 7 milligrams per liter to just over 17 milligrams per liter. The dissolved oxygen concentration was just under 7 milligrams per liter in early June 2010 and was slightly over 7 milligrams per liter in August 2010. The concentration was over 17 milligrams per liter in late February 2011. This is the highest recorded concentration of dissolved oxygen at any point in the upper Fishing Creek watershed except Fishing Creek at Benton. The dissolved oxygen concentration in Coles Creek was also over 16 milligrams per liter in January 2011 and March 2011. The pH of Coles Creek is sometimes