LIMITATIONS OF HAZARD MAPS:
Like most regional landslide studies this study has limitations from several causes:
deficiencies in the variable data set,
non-correspondence between the available (surrogate) data and the actual physical mechanisms responsible for landsliding, - and
deficiencies in the DeGraff method of predicting landslide susceptibility.

LIMITATIONS FROM DATA DEFICIENCIES:
The main limitation from data is the limited resolution of topography possible with the 50 m contour lines from the 1; 50,000-scale map series.
With a closer contour interval, slope angles and curvatures could be more accurately represented. This is particularly true of the steepest slope segments, whose angles are underestimated with too large a contour interval.

LIMITATIONS FROM USE OF SURROGATE VARIABLES:
These limitations arise due to the possible non-correspondence between the spatial data we have available at present, and the actual material properties and physical processes responsible for landsliding.
Some additional information, such as attitudes of dominant discontinuities in various parts of the map area, could provide data more directly connected to the landslide process.
Collecting data on such other relevant parameter as thickness and character of colluvium, or small-scale lithologic variability within bedrock formations (much less simplified lithologic groups), would be extremely time-consuming and expensive.
Data on groundwater flow patterns in steep mountainous terrain may prove impossible to collect; hopefully landslides are insensitive to such processes.