River and stream bank erosion Environment Canterbury does not hold records of present erosion or erosion risk at an individual property level. Historical records of hill and high country land with visible evidence of erosion are held for some farm properties. Environment Canterbury has records of the properties which are within river rating districts and the level of rating applicable to each class in each district.

Wind Erosion Environment Canterbury has some information and historic survey results which could assist an assessment of wind erosion risk

Slope Instability Base resource data in the form of land inventory and land capability maps were produced in the period 1960 - 1990 for many hill and high country properties. This mapping is at scales ranging between 1:10,000 and 1:50,000 and will give an indication of inherent land stability. Environment Canterbury has some records of surveys of hill and high country properties in its archives which may assist a qualified person to make an assessment of the general slope stability of an area.