An unnamed, seasonal stream originating from springs in the escarpment runs on the south side of the Schoenstatt Shrine and under the highway into the Armadale Brickworks site.

This stream discharges into the Wungong Brook half a kilometre west of the intersection of Rowley and Eleventh Roads.

An unnamed, seasonal stream originating from springs on the escarpment forms a steep-sided ravine which passes under the South Western Highway between the caravan park and former vineyards.

An unnamed winter brook originates from springs on the hillside in the lower northern corner of the area formerly known as McCarthy's bald patch, flowing down a shallow gully in the public open space alongside and above Chateau Court.

A seasonal stream originates at springs in Bungendore Park near the south-eastern corner of the suburb, and takes the name Cooliabbera Creek from the property on which the southern watershed is located.

It runs parallel to Leys Rise, just outside the southern boundary of the suburb, and joins the stream from Dead Man's Gully just north of the intersection of Eleventh and Rowley Roads, after which it discharges into the Wungong Brook.

Much of the eastern boundary of Mount Richon adjoins parkland of regenerated bush, and some the more elevated parts of the suburb retain remnant native trees and understorey.

Kangaroos, individual or in groups of up to twenty, are regular visitors to many of the properties in the suburb - attracted by the fresh greenery of the gardens.

Birds frequenting this area include the kookaburra, magpie, mudlark, black crow, and several kinds of wrens.

[5] The northern section of Mount Richon, north of the point where Hobbs Drive intersects Bedfordale Hill Road, contains suburban housing mostly of the 1960s through to the 1980s.

The section immediately south of this, the arteries of which are Talus Drive and Rise Court, contain larger suburban lots (semi-rural) with housing stock mostly dating to the 1990s and the Schoenstatt Chapel.

Breakneck Gully - The name of a steep ravine which is crossed by the South Western Highway, referencing an incident in which a horse rider was killed in the 19th century.

Dead Man's Gully - The name of a steep ravine which is crossed by the South Western Highway, referencing an incident in which a horse rider was killed in the 19th century.

Rod Marsh, the famous Western Australian cricketer, is a member of this family and spent part of his childhood in nearby William Street.

The name references 'Rishon LeZion' in Israel, a place with which the vineyard's second owner (GVP McCarthy) was personally acquainted.

Treecrest - A street name within the area formerly occupied by the Richon Vineyards, being a combination of tree and crest which is an allusion to the tree-crested escarpment of this locality.

Woodcroft - A street name within the area formerly occupied by the Richon Vineyards, being a combination of wood and croft but having no historical or geographical significance to the locality.