“We have an unknown distance yet to run, an unknown river to explore. What falls there are, we know not; what rocks beset the channel, we know not; what walls ride over the river, we know not. Ah, well! we may conjecture many things.”
(John Wesley Powell, 1834-1902)

Geographic Information Systems Links

• International Journal of Health Geographics Article published on-line 1/18/13 "Using ArcMap, Google Earth, and Global Positioning Systems to select and locate random households in rural Haiti"
• LIDAR map of Sand Creek, Ottawa County
• DEM Shaded relief map of Plaster Creek and Michigan Natural Storage gypsum mine (prepared by P. Wampler)
• Map of Grand Rapids Gypsum Mine Workings (Geo425 project Ringerwole and Walters)
• SSD Presentation - Geographic Information System (GIS) Mapping of the Michigan Natural Storage Gypsum Mine (Ringerwole and Walters)

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