Mapping Soil Erosion Risk and Safety Factors of the Massanutten Trail System Joshua R
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James Madison University JMU Scholarly Commons Senior Honors Projects, 2010-current Honors College Spring 2015 Mapping soil erosion risk and safety factors of the Massanutten Trail system Joshua R. Foery James Madison University Philip V. Sturm James Madison University Follow this and additional works at: https://commons.lib.jmu.edu/honors201019 Part of the Sustainability Commons Recommended Citation Foery, Joshua R. and Sturm, Philip V., "Mapping soil erosion risk and safety factors of the Massanutten Trail system" (2015). Senior Honors Projects, 2010-current. 30. https://commons.lib.jmu.edu/honors201019/30 This Thesis is brought to you for free and open access by the Honors College at JMU Scholarly Commons. It has been accepted for inclusion in Senior Honors Projects, 2010-current by an authorized administrator of JMU Scholarly Commons. For more information, please contact [email protected]. Mapping Soil Erosion Risk and Safety Factors of the Massanutten Trail System _______________________ An Honors Program Project Presented to the Faculty of the Undergraduate College of Integrated Science and Technology James Madison University _______________________ In Partial Fulfillment of the Requirements For the Degree of Bachelor of Science by Joshua Foery and Philip Sturm May 2015 Accepted by the faculty of the Department of Integrated Science and Technology, James Madison University, in partial fulfillment of the requirements for the Honors Program. FACULTY COMMITTEE: HONORS PROGRAM APPROVAL: Project Advisor: Carole Nash, Ph.D., Philip Frana, Ph.D., Assistant Professor, ISAT, GS Interim Director, Honors Program Project Advisor: Zachary Bortolot, Ph.D., Associate Professor, ISAT Reader: Amy Goodall, Ph.D. Associate Professor, Geographic Science Reader: Helmut Kraenzle, Ph.D., Professor, Geographic Science Reader: Wayne S. Teel, Ph.D., Professor, ISAT Abstract Public mountain biking and hiking trails can pose challenges to trail-user safety. The purpose of this project is to improve the overall safety factors on the Massanutten Western Slope, in eastern Rockingham County, Virginia, where a 15-plus mile trail system has been made available to a broad range of users. Owned by Massanutten Resort, the trail system is in a remote, forested area frequented by local off-road cyclists, runners, hikers, as well as seasonal tourists and is maintained by the Shenandoah Valley Bicycle Coalition (SVBC). This multifaceted project, which integrates ESRI ArcGIS, Trimble Pathfinder, USDA Soil Survey Geographic (SSURGO) data, and the National Land Cover Database (NLCD), has the common goal of increasing the overall safety of the trail system through assessing both environmental impact in trail construction and use, as well as accessibility for first responders. Trail erosion risk was modeled in ArcGIS based on the variables outlined in the Revised Universal Soil Loss Equation (RUSLE). The factors of soil erodibility, slope, and vegetation cover type were used to assess erosion risk and identify areas where current trails are likely to erode and where future construction should be avoided by SVBC. Field collection of GPS locational data using a survey- grade field rover was undertaken to update trail marker signage, provide accurate locational maps for rescue efforts, and test the validity of the erosion model through ground-truthing. Cellular strength data was collected to identify areas along the trails where cellular coverage may be weak. Ultimately, first responders will be provided with maps of the trail system labeled with geographic coordinates and that identify access points. Table of Contents List of Figures….…………………………..…………………………………….Page 4 Acknowledgements………….………………………………………………..…Page 5 Introduction………….………………………..…………………………………Pages 6-7 Literature Review.…………………...…………………………………………..Pages 7-13 Objectives.………………………..…………….………………………………..Pages 13-14 Methodology ……………………………………………………………………Pages 14-25 Results/Discussion ………………………………………………………………Pages 25-33 Conclusion………………………………………………………………….…....Pages 33-34 Future Work………………………………………………………………..…….Pages 35 Unintended Consequences.……………….……………………………………...Page 36 Appendices……………………………………………….……………………....Page 37-41 Appendix I LIDAR Data………………………………………………………....Page 37 Appendix II SSURGO K Factor Aggregation Report……………………………Pages 37-39 Appendix III Trimble Data Dictionary for GPS Feature Collection………….….Pages 40-41 Works Cited……………………………..………………………………………..Pages 42-45 3 List of Figures and List of Tables Figure 1: Close-up View of the Study Area………………………………….…..…..Page 6 Figure 2: View of Planned Trail Expansion Area……………………………..……..Page 13 Figure 3: View of General Area of Trails in Relation to Harrisonburg……….…......Page 15 Figure 4: Digital Elevation Model……………………………...…………….………Page 16 Figure 5: K Factor Layer Image…………….……………………………..………...Page 17 Figure 6: LS Factor Image…………………………………………….……………..Page 19 Figure 7: C Factor Layer Image…………………………………………….…....….Page 21 Figure 8: Trail Factor Layer Image…………………………………...……..………Page 22 Figure 9: Erosion Model Layer Calculation Image………………………………….Page 26 Figure 10: Soil Erosion Model Result-Overview Image of Study Area……….…....Page 27 Figure 11: Erosion Model Layer Calculation with Trail Factor Image……………..Page 28 Figure 12: Soil Erosion Result with Trail Factor Applied-Overview Image….…….Page 28 Figure 13: Soil Erosion Result with Trail Factor-close up view……….……………Page 29 Figure 14: Coordinate Map of Massanutten Western Slope Trails…….……………Page 30 Figure 15: Cellular Coverage Comparison Result………………….……………….Page 32 4 Acknowledgements We would like to thank and acknowledge many people that helped in the completion of this project. Thomas Jenkins of the Shenandoah Valley Bicycle Coalition, for providing access to the Massanutten trail network, as well as for providing GIS files for our project. We would also like to extend thanks to Dr. Zachary Bortolot and Dr. Carole Nash for their guidance and support over the past three semesters. Lastly, we would like to thank our family and friends for their support throughout this project. 5 Introduction Public mountain biking and hiking trails can pose challenges to trail-user safety. Accurate maps of mountain biking trails are not only useful to the users, but also to first responders who are in charge of responding quickly to emergency situations that may arise from trail accidents. The purpose of this project is to improve the overall safety factors on the Massanutten Western Slope Trail System, in eastern Rockingham County, Virginia, where15-plus miles of trail are available to a broad range of users (Figure 1). Figure 1: Close up of general area of trails location. This view is pivoted using the tools on Google Maps. https://www.google.com/maps/@38.4282842,-78.7589159,10183m/data=!3m1!1e3 This trail system is owned by Massanutten Resort and built and maintained by the Shenandoah Valley Bicycle Coalition (SVBC). Users of the trail system, which is in use year- round, include SVBC mountain bikers and resort hikers. This multifaceted Honors project, which integrates ESRI ArcGIS, Trimble Pathfinder, PCI Geomatica, USDA SSURGO soils data, and 6 the National Land Cover Database (NLCD), has the common goal of increasing the overall safety of the trail system through assessing both environmental impacts in trail construction and use, as well as accessibility for first responders. The overall goal of this project is to better assist future rescue efforts for local first responders along the trail system, as well as aid in future trail construction by the SVBC. Both partners pursued this project for individual reasons. Phil Sturm’s interest in mountain biking as well as his desire to complete a project that showcases a wide array of technical GIS skills led to his involvement. Josh Foery chose to undertake this project for a personal reason that occurred when he was in the tenth grade. While suffering from an emergency that required EMT response, the first responders got lost due to incorrect GPS data. In emergency response situations every second matters, and although Josh’s situation was not life threatening, the slow response time due to incorrect GPS data highlights the need for accurate data, especially in remote areas such as those where mountain biking trails are developed Finally, both partners had the same goal: to complete a project that gave back to Harrisonburg and surrounding communities. Literature Review General Trail Safety Techniques and Injury Statistics Although it seems like everyone in modern society owns a smart-phone and that virtually the entire continental United States supports cell phone coverage, this technology is useless in an emergency situation if those in need of rescue do not know their exact location. This situation is magnified even more when the emergency occurs in a remote location such as on the Western Slope Trails at Massanutten Mountain. How does one inform emergency service personnel 7 where an injury has occurred so that these services can most efficiently respond to the need for rescue? The research in regards to emergency rescues in remote areas is very limited, but that which does exist focuses on injury statistics and many of the causes of mountain biking accidents. Mountain biking in the United States has rapidly grown in popularity since its emergence in the late 1970s, both in terms of competitive and recreational mountain biking (Romanow, 2014). With the increase in popularity is also an increase in mountain bike-related injuries that often occur on remote trail