Here are some links that will help you to learn more about the Colo or get in touch with local services.
Friends of the Colo
Working to save the river from weeds.
Hawkesbury Nepean Catchment Management Authority
Water catchment management.
Colo River Passes and Routes
A excellent book on passes into the Colo river for experienced bushwalkers.
JoJo's Jetty - Colo Valley Wines
Wines grown in the Colo river valley.