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This dataset represents undesignated trails and road-like pathways on OSMP managed lands. Data has been collected from surveys since 2012 (at varying intervals). Data was combined into one Feature class starting in 2020.
Starting in 2019, each trail maintenance zone of the system is surveyed every 5 years. Thus, a complete set will be 2019-2023. To view the latest trails for the whole system use the following view: trailvwUndesignatedTrailsLatestSurvey.
Trail widths are being collected for 2019-2023 surveyed trails.
The 2018 survey was designed to detect change over time when compared to the 2011/2012 results. Both inventories used the same detailed criteria to define undesignated pathways and reduce inter-observer variability. Some changes were made to the methodology in 2018 to improve management recommendations and implementation of restoration and/or site design actions.
Points were taken at any point in a trail where condition or pathway type changed (Change Points). If condition, function, or pathway type were continuous points were taken every 200 feet (Mid Points).
Each point has a condition class assigned and trail function assigned to it.
Each point included a photo point of the undesignated road or trail. Photos are stored with the collected points. Click points to access a photo link.
Points were later digitized into lines using a GPS line collected during data collection.
Trail widths are present in any data collected from 2019 but not in 2018 survey data.
Condition Class adapted from Jeffery Marion et al. 2009:
• Class N - Recovering or emerging trail that does not meet mapping criteria (This class will not be used for trend analysis but will be used for trail and visitor management. For example, emerging trails can be prioritized for closure with volunteer program.)
• Class L - Noticeably impeded vegetation growth; some vegetation cover loss; some organic litter pulverized within tread; some bare soil exposed; tread intact
• Class M – Nearly complete or total loss of vegetation cover; nearly complete or total loss of organic litter within read; bare soil widespread; tread mostly intact; some rills evident
• Class H - Vegetation and organic litter are rare or nonexistent within the tread; active tread erosion evident (indicated by exposed or undercut roots, loose or undercut rocks, gullying, rutting, widespread rills, incised tread, or sloughing banks)