Maps and Data


          This collection of maps and data products was produced for governmental entities through my employment at Quantum Spatial, academic coursework, thesis research and presentation, and volunteer projects. Note that due to client privacy agreements, no projects from Stantec are included at this time. A statement of purpose is included for the context of each project.


Sonoma County, CA Watershed Data Products (2015)

          As a Geospatial Remote Sensing Technician with Quantum Spatial (formerly Watershed Sciences, Inc.), I work primarily in the private sector and data products for utility, oil and gas, and other organizations are not available per non-disclosure agreements. However, my flagship geospatial project with Quantum Spatial was in developing a series of LiDAR driven hydrologic data products with my team. We created stream centerlines, multiple scale watershed delineations (down to HUC 14 and HUC 16 sizes), hydro-enforced digital elevation models (DEMs), flow direction rasters, and flow accumulation rasters. This data is available Winter 2017 at the Sonoma County Vegetation Mapping and LiDAR Program website.


Atlas of the Polar Regions – Published Interactive Maps (2015)

          These maps were created for the Computer-assisted Cartography graduate course at Oregon State University. Our course project was an Atlas of the Polar Regions with the final ebook published to the iTunes store. The interactive download won the 2015 New Mapmaker Award from the British Cartographic Society. I edited Flora and Fauna sections of the Atlas and designed the following maps.


Narwhals Tundra Plants Penguin Hotspots


Willamette Valley Groundwater Management Area (GWMA): Tracing Nitrogen Fertilizers – EPA Volunteer Project (2015)

          The EPA at the Western Ecology Division in Corvallis, Oregon, welcomed me on as a GIS Analyst volunteer for one term to assist with compiling and synthesizing raw data, generating statistics, and creating variable watershed scale maps used to determine nitrogen fertilizer loading by crop type.The GWMA was founded in 2004 because a 230 square mile area was found to have undrinkable groundwater due to elevated nitrate concentrations. The Oregon DEQ monitors 41 wells in the area and the concentrations have risen over time, prompting a need to identify the source of nitrates. This research was used to assist to create a geospatial database, as well as, more importantly, trace potential agricultural sources of nitrates, in Willamette Valley groundwater. Below are three maps of nitrogen loading by crop type in the Calapooia Watershed, the Long Tom Watershed, and the entire Willamette Valley Watershed.


Calapooia Nitrogen Fertilizer Map Long Tom Nitrogen Fertilizer Map Willamette Valley Nitrogen Fertilizer Map

Oregon Ecoregions and Lake Watersheds – Thesis Data and Maps (2015)


Oregon Lake Watersheds

          Of 309 considered Oregon lakes, 109 were missing watershed boundary information (the others were available from the Oregon Lake Atlas. I used ArcGIS 10.1 with a watershed delineation tutorial to determine these watersheds; I edited the tutorial to consider the potential for multiple outlet points of lakes. The rasters used to create these watersheds were not hydro-conditioned, and therefore may have minor boundary errors, particularly in urban areas. Rasters were 30 meter resolution. The list of all lakes and raw Shapefiles of lake watersheds are available upon request.


Oregon Nutrient Ecoregions

          Omernik Level III ecoregions are commonly used in geographic, ecological, hydrological, and other applications to make assumptions in research and decisions regarding regulations. These ecoregions consider a variety of factors, such as geology, hydrology, vegetation, soil types, fauna, and climate. Nutrient ecoregions are nationwide aggregates of these ecoregions proposed for nutrient management purposes. My thesis research suggests that the Level III ecoregions may be more specialized than necessary for lake nutrient management, but the established nutrient ecoregion boundaries determined by the EPA may need adjustment to account for natural nutrient conditions in lake watersheds in Oregon. Below are three maps: Oregon’s Ecoregions; EPA’s Nutrient Criteria Based Ecoregions; and My Proposed Ecoregions for Lake Nutrient Management.


Oregon Ecoregion Map  Existing Nutrient Criteria MapProposed Nutrient Criteria Map