Lake Brownworth outlet to Onyx River Lake Brownworth outlet to Onyx River Description: Coordinates taken from 1996-97 GPS measurements at center of river where it leaves Lake Brownsworth ID: onyx_brwnout File Name :GPS96-97.DOC Coordinates: Latitude: -77.433601000000 Longitude: 162.714462300000 Read more about Lake Brownworth outlet to Onyx River