Nõlv
Nõlv is an Estonian noun meaning slope or incline. In geography and related fields, nõlv denotes the inclination of a surface relative to the horizontal, typically the ground. It describes how steeply terrain rises or falls and is a key factor in erosion, drainage, and construction.
Nõlv is commonly expressed as gradient in percent (rise per 100 units of horizontal distance) or as
Slopes are mapped using topographic data and measured in the field with clinometers or slope meters, and
In Estonia and other regions, terrain variation leads to a mosaic of nõlv types from flat plateaus