Maps Showing Inundation Depths, Ice-Rafted Erratics, and Sedimentary Facies of Late Pleistocene Missoula Flood in the Willamette Valley, Oregon

Online link https://geo-nsdi.er.usgs.gov/metadata/open-file/03-408/metadata.faq.html
Description This digital dataset, compiled from previously published and unpublished data sources, contains a personal geodatabase and raster data of features related to the repeated inundation of the Willamette Valley and Portland basin by Missoula Flood waters in L
Originators Minervini, J. M.; O'Connor, J. E.; Wells, Ray E.; Wheeler, Karen L.; and Thoms, Evan E.
Publication U.S. Geological Survey Open-File Report 03-408

Related topics

States or counties

contours

Lines representing flood inundation levels

Label Definition
OBJECTID Internal feature number.
Shape Feature geometry.
CONTOUR Elevation in feet
Shape_Length Length of feature in meters

erratics

Points representing the locations of ice-rafted erratics

Label Definition
OBJECTID Internal feature number.
SHAPE Feature geometry.
Erratic_No Database ID number
Source Original recorder
Elevation Elevation of erratic in feet (stored as character text because some are expressed as ranges, with the low and high estimates separated by a hyphen).
Township Cadastral unit of the same name
Range Cadastral unit of the same name
Section Cadastral unit of the same name
Lithology Rock type of erratic
Comments Usually concerning the location quality
Location_Qual Quality of the location accuracy
Date Date of original recording
Notes Description of the erratic

geology

Polygons representing the distribution of Missoula Flood deposits

Label Definition
OBJECTID Internal feature number.
Shape Feature geometry.
Unit Geologic unit abbreviation
Facies Fine or coarse-grained facies of flood deposits
Shape_Length Length of feature in meters
Shape_Area Area of feature in meters

UnitDescription

A table with geologic unit descriptions

Label Definition
Unit Geologic unit abbreviation
Facies Fine or coarse-grained facies deposit
Description Geologic unit description
Source Publication source

wv_elevation

A 10 m digital elevation model of the Willamette Valley. Source for grids 0to115ft, 155to177ft, 177to260ft, and 260to400ft

Label Definition
OBJECTID Internal feature number.
Value Elevation in decimeters
Count Number of grid cells

wv_hillshade

A 10 m shaded relief image of the Willamette Valley

Label Definition
OBJECTID Internal feature number.
Value Value of gray on a scale of 1 to 100
Count Number of grid cells

wv_hydro

A 20 m grid showing the hydrography of the Willamette Valley

Label Definition
OBJECTID Internal feature number.
Value Arbitrarily assigned from previously released report OFR 01-294
Count Number of grid cells