Yarran Dheran Nature Reserve is a nature reserve and bushland park that forms part of the Mullum Mullum Valley. It is located on the banks of the Mullum Mullum Creek, on the border of Donvale in Melbourne. The reserve spans 7.2 hectares and features a mix of remnant and regenerated bushland, supporting a variety of native wildlife, particularly birds, with 85 species observed. The Mullum Mullum Creek Trail passes through the reserve, which also contains numerous unsealed bush tracks. An information centre, open on Sunday afternoons from 2:00 pm to 4:00 pm, provides visitor information. The reserve includes a series of ponds that feed into a cascade leading to the creek during wet periods. Amenities include toilets, mown areas for picnics, and seating. Yarran Dheran is a dogs-on-lead reserve.