Firth River, Alaska North Slope county, Margaret Lake to Beaufort Sea section road map. <<< Back to Firth River main page MAP LEGEND: Blue Dot = Put In, Red Dot = Take Out (Above map supplied by Wanan W., copyright ©.) Putin Location Coordinates: Latitude: 68.5755 Longitude: -141.29731 Takeout Location Coordinates: Latitude: 68.64749 Longitude: -140.99671 HIGH QUALITY TOPO MAP, CLICK HERE