
1) Canadian indie rock group 2) Canadian post-rock group 3) Channels between banks 4) Some navigation channels 5) Stream bottoms 6) Watercourse channels 7) Where brook trout sleep
Found on
https://www.crosswordclues.com/clue/riverbeds

Riverbeds is a Canadian post-rock/emo band from Montreal, Qc formed in 2010. The band made its recording debut in 2012 with the E.P. Hiding Small Things In Obvious Places which was released on November 24th at Panda Bar. Riverbeds musical style has been described by Indecent Xposure as being influenced by `Thrice, The Almost and Circa Survive amo....
Found on
http://en.wikipedia.org/wiki/Riverbeds

the land under a river - usually after the river is dried up
Found on
https://sciencetrek.org/sciencetrek/topics/mars/glossary.cfm
No exact match found.