Latest news from the department.
A new walkway is opening tomorrow across the 367m dam wall, providing fresh angles of Guido van Helten's iconic artwork 'Reflections'.
It will initially open on weekends, public holidays and school holidays, and will be open daily by the end of the year.
The walkway allows hikers to complete the 5 day, 4 night 87km Wiilman Bilya Trail that starts and finishes in Collie, circling Wellington Dam.
It forms part of the Reflections Trail, which when finished will include new boardwalks and lookout points for wheelchairs and prams, providing access to experience the sweeping views from the top of the dam down the Collie River Valley.
Automated gates will be installed and a Water Corporation road bridge is being built below the dam to allow pedestrian and vehicle access across the river.
The walkway is part of the $10 million Collie Adventure Trails initiative to establish the town as a premier trail and adventure destination and create new local jobs as Collie continues its transition to a sustainable future.