Surface forms of mineral soils in the Prairie Provinces

Dissected

A dissected landscape characterized by terrain that has been deeply cut by erosion into numerous valleys, ridges, and slopes.

Hummocky

A very complex sequence of slopes extending from somewhat rounded depressions or kettles of various sizes to irregular to conical knolls or knobs. The surface generally lacks concordance between knolls or depressions. Slopes are generally 9-70% (5-35°).

Knoll and kettle

A knoll‑and‑kettle landscape consists of alternating small hills and depressions formed by glacial deposition and ice melt.

Level

A flat or very gently sloping, unidirectional surface with a generally constant slope not broken by marked elevations and depressions. Slopes are generally less than 2% (1°).

Rolling

A very regular sequence of moderate slopes extending from rounded, sometimes confined concave depressions to broad, rounded convexities producing a wavelike pattern of moderate relief.

Undulating

A regular sequence of gentle slopes that extends from rounded, sometimes confined concavities to broad rounded convexities producing a wavelike pattern of low local relief. Slope length is generally less than 0.8 km and the dominant gradient of slopes is 2-5% (1-3°).