LiDAR Based Mapping of Glacial Valley Morphology in Central Washington Brianna Stith Project Mentor(s): Sterling Quinn, PhD; Walter Szeliga, PhD Central Washington contains some of the most dramatic glacial landscapes in the Cascades, yet many valley systems remain only broadly mapped, and the glacial process that shaped them has not been closely examined. While major glacial features are visible at large scales, smaller landforms, subtle slope transitions, and valley structure are difficult to interpret using traditional maps alone. High- resolution LiDAR data and advanced GIS techniques now allow these landscapes to be analyzed in greater detail and provide new insight into past ice flow patterns. In this project, LiDAR elevation data was processed and combined into a single terrain surface for selected valleys. From this surface, shaded relief images, slope maps, and refined contour layers were created to highlight subtle geomorphic features. Geologic lithology data were also incorporated to compare surface form with the underlying rock types. Cross sections were drawn across the valleys to measure elevation changes, compare ridge heights, and identify potential glacial trimlines. 3D visualization supported the interpretation of valley shape, terrace formation, and other features related to past glacial activity. Key geomorphic features were digitized into GIS files for continued research. These datasets may guide future field surveys and support glacier flow modeling, including studies estimating past ice thickness. By combining LiDAR based mapping with profile analysis, this project provides a clear framework for advancing glacial research in Central Washington. Presentation Type: Poster Presentation (May 21, 9:30am–3:00pm) Keywords: Central Cascades, Washington, GIS, Terrain Analysis, Glacial Morphology SOURCE Form ID: 6 Using ESRI Geospatial and Field Tools to Conduct an Inventory of Wildlife Troughs and Guzzlers in the Saddle Mountain Area, Grant County, WA Tate VonBargen Project Mentor(s): Jennifer Lipton, PhD; Sam Feder The Wenatchee District of the US Bureau of Land Management has several locations across the Saddle Mountain Range in Grant County, WA where wildlife fixtures are present. These features are wildlife troughs and wildlife guzzlers which are used to collect rainwater for all forms of local wildlife in various states of disrepair. The aim of this study is to apply the use of geospatial tools such as ArcGIS and Survey123 to accurately record the quality of these sites and their geospatial location. Using ArcGIS pro, I compare the given data points with the publicly available data allowing me to infer the optimal path to find and map these points. Using Survey123, I created a field survey based upon the one shown to me by BLM. I used this to go out into the field and collect the data on the ground. With the survey protocol, I made a few choice changes on formatting for data consistency and then exported the data with a geodatabase file. Doing so allowed my images to stay attached to the data for when I uploaded them onto ArcGIS pro. Doing so allowed further analysis and comparison of the different points, creating a picture of the condition of these structures across the landscape. I found that these points provided by the previous dataset were inaccurate, being multiple meters away from the coordinates. I also found that the expectation of the trough’s structure was also inaccurate, where certain assets such as ramps were not present. Presentation Type: Poster Presentation (May 21, 9:30am–3:00pm) Keywords: Biogeography, GIS, Land Management, Saddle Mountains, Field Methods SOURCE Form ID: 125
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