Proffit Mountain Upper Reservoir Failure

Proffit Mountain Upper Reservoir Failure
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37°33'30"N
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The polygons overlaid on the background map, a Shaded Relief Digital Raster Graphic (DRG) show the
area affected by the Dec. 14, 2005 failure of the Upper Reservoir located on Proffit Mountain in Reynolds
County, Missouri. The blue slashed polygon represents preliminary field observations of data points
collected with hand-held GPS by the Early Response Team (ERT), a cooperative partnership of the
USGS, Mid-Continent Geographic Science Center and the University of Missouri-Rolla, Natural Hazards
Mitigation Institute, on the mornings of Dec. 15 and Dec. 18, 2005 in the Johnson’s Shut-Ins State Park.
The clear blue polygon overlay adjacent to the Upper Reservoir and extending northwest and connecting
to the blue slashed polygon was compiled through image interpretation of low altitude aerial oblique
photographs taken the morning of Dec. 15 and LIDAR elevation data acquired on December 16, 2005.
The background map incorporates two USGS digital data sets, a Digital Raster Graphic (DRG), derived
by digitally scanning a U.S.Geological Survey (USGS) 7.5 minute, 1:24,000 scale topographic map
draped on a USGS Digital Elevation Model (DEM) to create a Shaded Relief DRG. Approximate file size
for a DRG averages 9 to 11 megabytes. File sizes for a DEM depend on data resolution. Approximate file
sizes are 9.9 megabytes for a 10-meter resolution and 1.1 megabytes for a 30-meter horizontal
resolution. USGS DEMs are collected using photogrammetrical interpolation of Digital Line Graph (DLG)
vectors from hypsographic and hydrographic data.
This Shaded Relief DRG image uses the USGS Johnson’s Shut-Ins Quadrangle and this poster
represents a selected portion of that quadrangle around the site known as the Upper Reservoir.
37°31'0"N
37°31'0"N
Additional information about DRGs or DEMS is available at http://erg.usgs.gov/isb/pubs/factsheets.
90°51'30"W
Mid-Continent
Geographic
Science
Center
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µ
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0
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0.25
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1
Miles
This map was produced by the United States Geological Survey in
partnership with the University of Missouri-Rolla through the cooperative
efforts of the Mid-Continent Geographic Science Center and the Natural
Hazards Mitigation Institute.
Location map
MCGSC web address: http://mcmcweb.er.usgs.gov/mcgsc
DRG image source date: USDA Revised 1999 , Projection: Universal Transverse Mercator, Datum: NAD 1983,
Zone 15, resolution: 2.4 meters, file size: approx. 10 megabytes.
Printed Feb, 15, 2006, PROVISIONAL- poster has not yet been formally reviewed.