Results from a review of the literature and three scientific studies are presented to model and clarify the influence of factors that substantially influence trail soil loss and that can be manipulated by trail professionals to sustain high traffic while minimizing soil loss over time.
Natural-surfaced trail systems are an important infrastructure component providing a means for
accessing remote protected natural area destinations. The condition and usability of trails is a critical
concern of land managers charged with providing recreational access while preserving natural conditions, and to visitors seeking high quality recreational opportunities and experiences. While an adequate
number of trail management publications provide prescriptive guidance for designing, constructing, and
maintaining natural-surfaced trails, surprisingly little research has been directed at providing a scientific
basis for this guidance. Results from a review of the literature and three scientific studies are presented to
model and clarify the influence of factors that substantially influence trail soil loss and that can be
manipulated by trail professionals to sustain high traffic while minimizing soil loss over time. Key factors
include trail grade, slope alignment angle, tread drainage features, and the amount of rock in tread
substrates. A new Trail Sustainability Rating is developed and offered as a tool for evaluating or
improving the sustainability of existing or new trails.
Attached document published November 2016