Lake Ewauna
It is the headwaters of the Klamath River , fed by the Link River from Upper Klamath Lake . 
<triplet> Klamath River <subj> Upper Klamath Lake <obj> origin of the watercourse <triplet> Link River <subj> Upper Klamath Lake <obj> origin of the watercourse <triplet> Upper Klamath Lake <subj> Link River <obj> lake outflow