 The headwaters of the Adams are several unnamed glaciers at roughly 2 @,@ 000 metres ( 6 @,@ 600 ft ) elevation in the north @-@ east region of the <unk> Range of the Columbia Mountains . The upper portion of the river flows roughly south and southwest through wetlands and passes through two small lakes , Tumtum and <unk> . It has sections of rapids and whitewater , and flows over <unk> below Tumtum Lake . Its flow drops by 5 metres ( 16 ft ) per kilometre in certain sections . After travelling for 94 kilometres ( 58 mi ) and entering the Shuswap Highland , it enters the northern end of Adams Lake . 
