Jan 19 2020 Chris LaVoie Uncategorized / 0 Comment Cougar Reservoir & East Fork Mckenzie River, Oregon. Drone Footage. [youtube https://www.youtube.com/watch?v=rfzo5TF540o&w=640&h=360]It was a beautiful day at Cougar Reservoir and the East Fork of the Mckenzie River. Christmas Day. Cougar Reservoir is fed by two branches of the Mckenzie.