Description of Historic Place

The Defensible Lockmaster’s House, a component of Clowes Lockstation, is located four kilometres downstream from Merrickville on the west bank of the Rideau River, in the Rideau Canal National Historic Site of Canada. It is a single-storey, square structure with a hipped roof and exterior walls of rough-faced stone. The main entrance is flanked by windows and protected by a porch. Set back from the principal façade is a single-storey clapboard extension with a full-length porch. The Defensible Lockmaster’s House is in an elevated position some distance from the lock chamber. The designation is confined to the footprint of the building.

Heritage Value

The Defensible Lockmaster’s House at Clowes Lockstation is a Recognized Federal Heritage Building because of its historical associations, and its architectural and environmental values.

Historical Value
The Defensible Lockmaster’s House is a very good example of a building associated with the construction and operation of the Rideau Canal. As part of the Rideau Canal, the building illustrates firstly the theme of military defence strategy for Upper and Lower Canada in the second quarter of the 19th century, and secondly, the subsequent evolution and transformation of the waterway as a federal public work. It is one of the last defensible lockmaster's houses to be built and exemplifies the change in the role of the Rideau Canal from a military function to that of transportation. Currently, the house is a locally operated museum interpreting the historic role of the canal in the area.

Architectural Value
The Defensible Lockmaster’s House is valued for its very good aesthetic design, and is among the earliest of its type constructed on the Rideau Canal. It is one of only a few on the canal that still retains the original single-storey defensible design. The frame addition, designed to enhance the residential function of the building, represents the changing role of the canal by the 20th century from that of defence to that of commerce and recreation. Good functional design is evidenced in the thick defensive walls and the interior layout. Good craftsmanship can be seen in the quality of the regularly coursed masonry of the exterior walls.

Environmental Value
The Defensible Lockmaster’s House is compatible with the domestic character of its rural setting at Clowes Lockstation and is a familiar landmark to local residents and visitors.

Sources: James De Jonge, Fifteen buildings, Southern Area, Rideau Canal, Ontario, Federal Heritage Buildings Review Office, Building Reports 89-155, 89-156, 89-157, 89-158,89-159, and 89-160; Defensible Lockmaster’s House, Chaffey’s Lockstation, Rideau Canal, Ontario, Heritage Character Statement 89-158.

Character-Defining Elements

The character-defining elements of the Defensible Lockmaster’s House should be respected.

Its good aesthetic, good functional design and good quality craftsmanship, for example:
- the simple, square, single-storey massing;
- the hipped roof, and the chimney;
- the exterior walls of thick, evenly coursed masonry;
- the symmetrical placement of the windows and doors;
- the single-storey clapboard addition with full-length verandah;
- the interior configuration.

The manner in which the Defensible Lockmaster’s House is compatible with the domestic character of Clowes Lockstation and is a familiar local landmark, as evidenced by:
- its overall scale, design and materials that are compatible with its rural surroundings;
- its familiarity within the area due to its elevated location and role associated with the canal.