Mentasta Lake   Be the first to submit input for Mentasta Lake. If you have info on Mentasta Lake, Alaska Range, Valdez-Cordova Borough, Alaska please submit it here to improve this web site.          These outdoors activities are available near Mentasta Lake.   Whitewater Near Mentasta Lake: Drop Creek, Valdez-Cordova Census AreaBorough, 19 miles away       Class II - 19 miles long (Upper gravel bar to Copper River)