This could be a general litter pick of areas surrounding a watercourse, clearance of debris from a river or pond or removal of fly-tipping.

The group also undertakes habitat management across the city in conjunction with Cardiff Council urban park rangers.

[7] In an interview with Cardiff council on receiving his MBE, founder Dave King said "The Rivers Group is more than just a litter picking thing.

[12][13] In 2015 The group were partners in Cardiff Council's Environmental scrutiny committee producing the "Restore Our Rivers" report.

[20] In 2023, CRG was shortlisted for the Welsh Charity Awards, run by WCVA, and a runner-up in the income generation category[21]