Chesham Environmental Group has organised a working party.
Volunteers will help maintain the River Chess in Pednor Road on Wednesday, December 2.
The group wants to help reduce possible flooding by clearing the ditch along Pednor Road that feeds the River Chess.
Volunteers are asked to wear gloves and appropriate clothing. Waders and tools will be supplied.
The group will meet at 10am at the junction of Pednor Road and Drydell Lane.
For more information visit www.chesham environmentalgroup.org. uk or call 01494 783 691.