The purpose of this layer is to inventory and track recreational uses (e.g. hike, bike, OHV... etc.) permitted on designated trails within Colorado Parks & Wildlife properties. Elevation (Z values) are expressed in meters above mean sea level (MSL) using the North American Vertical Datum of 1988 (NAVD88). All heights are approximate since they are are based on 10 meter resolution DEMs published by USGS.