The soils of the Fort Nelson area (94J NE), in the plains region of northeastern British Columbia (Fig. 1), were surveyed during July and August 1967. A preliminary report of the soils along the Alaska Highway and the major navigable rivers had been made by Leahey (5). The whole area lies within the Fort Nelson Lowland (4), which is a gently undulating plain dissected by three major rivers, the Muskwa, Prophet, and Fort Nelson. Access is afforded by the Alaska Highway, the roads to the Clarke Lake natural gas fields, and a number of short side roads. Most of the area, however, is inaccessible to a normal wheeled vehicle in summer because of the extensive sections of organic terrain and the steep-sided river valleys. A helicopter was used for 4 days to map this portion. The soils of the alluvial terraces from Fort Nelson downstream to the Indian Village of Snake River were inspected by boat. Fig. 2 shows the portion mapped from the roads and the river and also that mapped, in much less detail, by helicopter traverse and air photo interpretation. The first part of the report describes the environment, including climate, vegetation, and physiography. The second part describes the soils and the land types in the context of physiographic regions called terrain systems. The third part includes interpretative sections for agriculture, forestry, wildlife, and recreation. The colors and symbols on the soil map show the distribution of the individual soils. The report and map ace complementary and both should be used to gain information about the soils.