As of December 2021 the Happy Valley Reservoir has been opened up to the public. New facilities have been established including an expansive carpark on Chandlers Hill Road, multiple walking and cycling trails, BBQ and picnic areas with shelters and a lookout. Fishing is permitted with a permit. Kayaking & canoeing is allowed, launching from the waters edge or pontoon.

There are 4 new walking and cycling trails through and around the reserve. A 2km Southern Loop, a 4km Woodland Loop, an 11km Shoreline Loop and a 10km Boundary Loop. See the full details including map on the Reservoirs SA website.

An iNaturalist Collection Project has been established to collect observations from across the Happy Valley Reservoir Reserve. This project has been added to the ‘Protected Parks of South Australia’ Umbrella project. The reservoir reserve also forms part of the larger Glenthorne National Park.