REGFM
Regional Landform

Definition

REGFMDOM

General physical description (dominant soil landscape)

REGFMSUB

General physical description (subdominant soil landscape)

Classification

CODE	CLASS	DESCRIPTION
B	Tableland (or plateau)	Comparatively flat areas of great extent commonly bounded on at least one side by an abrupt escarpment, or may be terminated by mountains; may be dissected by deep valleys and deeply incised rivers; may be tectonic, erosional, or volcanic in origin; may be step-faulted; slopes generally <10%, in some places 10-15%; relief generally <50 m
H	Hilland	Natural elevations rising prominently above the surrounding plain and having a recognizably denser pattern of generally higher knolls or crest lines with an irregular or chaotic surface form composed of upper surface convexity and lower concavity; includes hummocky morainal material, volcanic cones, and conical hills or lava; slopes generally 10 - 30%; relief generally <100 m
M	Mountain	Erosional and volcanic landscapes with relief (vertical distance between higher and lower parts) >=300 m with most of the area comprising valley to summit terrain; slopes generally >30%. In general the terrain has a restricted summit area and steep sides, irregular shape and considerable bare rock surface, or very thin soil cover; occur as a single, isolated feature or in a group forming a long chain or range; major scarps are relatively steep and straight cliff-like slopes of considerable linear extent separating surfaces such as plateaus lying at different levels
O	Organic wetland	Areas dominated by organic material >40 cm thick; contains >30% organic matter by weight; occurs in a variety of wetland surface forms
P	Plain	Flat to very gently undulating areas having few or no prominent irregularities; formed by erosional or by depositional (or constructional) processes; include broad continuous, gently sloping piedmont plains extending along and from the base of a mountain, formed by lateral coalescence of a series of separate but confluent alluvial fans; alluvial processes are mainly responsible for the sedimentation; coarse fragments are rounded by transport over relatively long distances; slopes generally <6%; relief generally <10 m; extent generally >5 km in one direction
S	Scarp	An escarpmetn, cliff, or steep slope of some extent along the margin of a terrace, bench, plateau, hill, or mesa; a scarp may be of any height
V	Valley	Terrain dominated by major spillways, drainageways, or mountain trenches separated from surrounding landforms by a significant and abrupt break in slope; the valley profile may be V- or U-shaped with an extensive valley floor and flood plain up to about 5 km wide; valley profile may also include eroded terraces and their irregular slope segments
#	Non applicable	(Urban area)
-	not identified

Source

This information was originally found in SLC verson 1.0. It was translated to version 2.2 using a polygon intersection approach (NSDB-ID=CAR016).

effective version 2.2 Source: adapted from Shields et al., 1991
Contact: Head, CanSIS