sentences:  The Collie River Catchment is located in the south-west of Western Australia, it covers over 3,000 km² and includes the Wellington Reservoir.For Western Australia's growing population the reservoir is considered a valuable resource, but the water is too salty for drinking.The Waters and Rivers Commission has a target of reducing the salinity of the river water to 500 mg/L by 2015 as a part of the State Salinity Strategy.