The Riverside showing is located on the east bank of the Kitsault River, 10.5 kilometres due north of Alice Arm. The area was investigated in 1916.

The area is underlain by volcanics and sediments of the Upper Triassic Stuhini Group and the Jurassic Hazelton Group which are deformed into northwest trending folds.

The showing comprises two main occurrences. The first consists of a vein, traced by an adit for 9 metres, hosted in Stuhini Group argillite. The vein strikes 053 degrees, averages 0.3 metre in width and contains sphalerite and minor chalcopyrite, galena and pyrite in a gangue of quartz, calcite and brecciated slate.

The second occurrence comprises a series of quartz lenses up to 0.9 metre in width hosted in Hazelton Group rocks. A sample from one of these lenses assayed 10 grams per tonne gold and 274 grams per tonne silver (Minister of Mines Annual Report 1916, page 64).

In 1916, at an elevation of 106 metres, a tunnel has been driven 6 metres on the Riverside No.2 claim intersecting and following a fissure plane trending 115 degrees, dipping northerly 65 degrees. In the face of the tunnel are some quartz stringers with a little pyrite. Up the steep hillside to the east are several small opencuts which expose small quartz lenses, the largest being 0.9 metre in width. These may represent the continuation of the doubtful vein in the tunnel. The vein is reported to have been traced to the top of the mountain (Minister of Mines Annual Report 1916).

In 2005, Kitsault Resources Ltd. completed a reconnaissance stream sediment survey on the area as the Kitsault Gold property.