McGowans Reserve is comprised of two separate land parcels 90 metres apart located around 134 McGowans Road.
The larger western block blends into the neighbouring properties and contains native vegetation comprising of small indigenous canopy trees and 'minor' patches of indigenous understorey.
The smaller eastern block is a tiny land locked parcel at the bottom of a gully that flows into the Mullum Mullum Creek 240 metres away. It contains remnant vegetation (also part of McIntyre Road Biosite 19) and serves a drainage purpose.