ESRI Story Map: Lake Lac Courte Oreilles
The Courte Oreilles Lake Association (COLA) contracted the University of Stevens-Point’s Geography department to implicate geodesign methods and GIS techniques to communicate the vulnerability of Lake Lac Courte Oreilles. I aided in this project by creating several map figures and an ESRI Story Map, which aimed to communicate the uniqueness of this resource and the factors threatening it.Poster_Olson2
Mapping and Modeling Fish Habitat: Mission Lake
Bluegill (Lepomis macrochirus) and Largemouth Bass (Micropterus salmoides) distributions were analyzed in Mission Lake, WI. Vegetation and depth were used to predict Bluegill distribution throughout the lake and coarse woody habitat and depth were used for Largemouth Bass. The model was created using habitat and fish data from Pike Lake and Wadley Lake, two nearby glacial lakes. The project goal was to evaluate suitable fish habitat in the glacial lakes of central Wisconsin through mapping aquatic habitat, mapping fish habitat, and evaluating the effectiveness of the model on Mission Lake.
A TIN model used known shore points as a reference elevation level and depth points collected via Sonar to depict the lake bottom. Five foot contour lines were derived from the TIN, converted to a raster file, and smoothed.
Interpolation via the inverse distance weighted (IDW) tool was used to portray depth, vegetation, and coarse woody habitat throughout the lake. These new interpolated layers were then used in a raster calculation to predict the presence of Bluegill (depth and vegetation) and Largemouth Bass (depth and coarse woody habitat) in Mission Lake. The Extract Values to Points tool was applied to depict point locations of fish in these rescue selection functions (RSF). The RSF model were exported as text files and used to validate the model.
Connectivity and Fish Passage in the Two Hearted River Watershed, Michigan
The goal of this project was to evaluate optimal barrier removals within the Two Hearted River watershed by identifying barriers to fish passage, assessing optimal barrier removals via FishWerks (a decision support tool developed by the University of Wisconsin-Madison) and an ArcMap toolbox developed by the Nature Conservancy and the Cadmus Group. The toolbox recommends barrier removals in lotic systems to maximize connectivity for fish migration. The tool functions in three stages: divide the stream network into subnetworks, delineate the subnetworks, and assess attributes to determine optimal barrier removals (e.g. cost of removal, fish passability). This toolbox was applied to a layer depicting barriers on the Two Hearted River, such as culverts and bridges. The objective was to enhance migratory fish passage, providing several hypothetical budgets.
FishWerks identified 23 barriers (e.g. dams, waterfalls, culverts) in the Two Hearted River watershed. An optimization routine was run to remove barriers at different budgets ($500,000, $750,000, $1,000,000, $1,250,000, $1,500,000, and $1,000,000 including lampricide treatment).
Additional GIS ExamplesRuffed_Grouse_Assessment_Project_PDF
Projects completed in compliance with guidelines developed by Doug Miskowiak and Dr. Keith Rice for GIS I and GIS II