This page refers to information about whole-of-river issues. For more information about specific parts of the river, please visit
Cashmere Stream Care Group
Lower Cashmere Residents Association
Friends of the Ernle Clark Reserve
Beckenham Neighbourhood Association
Forest and Bird, Calders Green
Avon-Heathcote Estuary Ihutai Trust
NatureWatch: a living record of life in New Zealand that scientists environmental managers, citizen scientists and communities can use to monitor changes in biodiversity in their local area.
Cleanwaterways.org.nz: a fantastic website about urban waterways
*This document is a significant reference for the content of this website. The OHRN is indebted to the author, Chrys Horn and Environmental Canterbury and the Christchurch City Council for permission to use this document as reference material.
Ecological effects of the Christchurch February 2011 earthquake on our city rivers (CCC and ECAN, 2011)
The Christchurch City Council monitors the environmental health of the Ōpāwaho-Heathcote river. Results can be found here.
Tī Kōuka Whenua (Christchurch City Library)