The bounds were described as "all those Lands which lie within the distance of two miles from either of the two opposite banks of the River Murray, within the province of South Australia, together with all those lands which lie within the distance of two miles from the north shore of Lake Alexandrina, between Salt Creek Trigonometrical Station and the Murray, and two miles from the east shores of Lakes Alexandrina and Albert, and also all the land in the County of Russell lying west of Lake Albert".

[1] In March 1847 a Royal Order had made in the neighbouring provinces of Victoria and New South Wales to prevent pastoral leases being made on land within 3 miles of a sea coast or within two miles of a bank of several important rivers.

The government of South Australian decided to follow suit with regard to the Murray River, making reference to the 1847 Royal Order in justification of the new land administration division.

The hundred overlaid the boundaries of the pre-existing cadastral counties of Russell, Sturt and Eyre.

On 19 April 1860 two further riverside counties were proclaimed to cover the riverlands up to Wachtels Lagoon at present-day Kingston On Murray.