Terrain Attributes

Water microrelief (Terrain Attribute)

Icon	Attribute	Unit	Layer	Range	Description
	ANGLE_OF_REPOSE	angle (0-90°)	Ground		The different subsurface types each attain a value for the maximum slope (Dutch: talud). This value is used for creating the water edge steepness and indirect for the water depth.
	BOWEN_RATIO	ratio	Surface	0.001 to 10	The ratio between two forms of heat transfer between this building's surface and the atmosphere.
	BUILDABLE	boolean	Both		Whether it is permitted to place Buildings here
	GROUND_INFILTRATION_MD	m/day	Surface		The speed at which water can flow vertically from the surface to the unsaturated zone.
	GROUND_INFILTRATION_MD	m/day	Ground		The speed at which water can flow vertically from the surface to the unsaturated zone.
	HEAT_EFFECT	°C	Surface		Measure of impact on the Heat Overlay
	LIVABILITY_EFFECT		Surface		Measure of impact on the Livability Overlay.
	PEAT_FRACTION	fraction	Underground		The fraction of the subsurface which will be considered to be peat by the Subsidence Overlay.
	TERRAIN_MIX		Surface
	TEXTURE TYPE	Integer	Surface	0 to 2	Value used to select the terrain blend color.
	TOPLAYER_THICKNESS	m	Ground		The depth of the clay soil layer, as considered by the Subsidence Overlay.
	VEGETATION_FRACTION	fraction	Surface		The amount of green which this Terrain Type provides per m².
	WATER	nominal	Surface		Whether this Terrain Type represents a form of water (and what type).
	WATER_DEPTH_M	m	Surface		The default depth of this water Terrain Type, relative to the surrounding elevation.
	WATER_EVAPORATION_FACTOR	factor	Surface		How fast this terrain can evaporate water from the ground. The weather's evaporation speed is multiplied by this factor to determine the rate of evaporation.
	WATER_MANNING	s/(m1/3)	Surface		The Gauckler–Manning coefficient of the terrain, which is a measure of surface roughness. Used in the surface flow computation of the Water Overlay.
	WATER_STORAGE_PERCENTAGE	fraction (m3/m3)	Ground		The percentage (as a fraction) of the ground layer volume which can be filled with water. A lower percentage means the ground layer will be able to store less water, and the saturated zone will rise higher with the same amount of water in the ground layer.