C.R.S. § 30-5-153

Park county: Commencing at a point where the second correction line south intersects the Platte river; thence south to the third correction line south; thence west to the summit of the snowy range, east of the Arkansas river; thence in a northerly direction along the divide between the Arkansas and Platte rivers, and around the headwaters of the Platte river and its tributaries; thence easterly along the snowy range dividing the waters of the Platte from the waters of the Blue, to the point of intersection with the first correction line south; thence east on said correction line to the western boundary of Jefferson county; thence south on said boundary to the Platte river; thence up the center of said river to the place of beginning.