US Army Corps/Metro Data Resource Center
1996/2004
February 1996 Flood with Metro Goal 5 Updates
flood96metro
vector digital data
withheld
A record peak flow in February of 1996 caused the Willamette River and its major tributaries to flood. This map was created to delineate the inundated areas near the mainstem and major tributaries of the Willamette River. Complete FGDC metadata is available from US Army Corps of Engineers, Portland District. Updated through the Goal 5 process.
This polygon coverage will be used by land managers and government entities within the Willamette Basin to assess the limits of flooding during the 1996 flood. It will also be used as part of a research project designed to formulate future scenarios for growth in the Willamette Valley (Pacific NW Ecosystem Research Consortium: OSU, UofO, EPA).
The original file, upon which this coverage is based, was produced at Spencer B. Gross Mapping in Portland, Oregon (http://www.sbgmaps.com) under contract to US Army Corps of Engineers, Portland District (contact person: Robert C. Peak, US Army Corps of Engineers, 333 SW First St., Portland OR 97204, telephone 503-808-4856). Incomplete information has been provided to date to describe the process undertaken by SBG Maps to produce this inundation line. The contact person at SBG Maps is Chris Aldrich (chris@sbgmaps.com) and their mailing address is: 13545 NW Science Park Dr., Portland, OR 97229 Telephone 503-646-1733 The procedure to digitize the inundation line and to produce dxf files is pieced together here from information provided to USACE from SPG Maps. SPG Maps produced two projects for USACE: digital orthophotos for the Willamette River from 1995 (pre-flood) and this inundation line for the flood of 1996. Apparently, the georeference for the flood photography was bridged from the 1995 digital orthophotography, allowing the flood inundation line to be digitized directly from the rectified aerial photos of the flood. Color aerial photography was shot during the 1996 flood by Bergman Photographic, Portland, Oregon (503-239-6010) and by WAC in Eugene, Oregon (1- 800-845-8088). For this project, Bergman s photography was used almost entirely.
en
19960209 through 19960211, 2004
Ground condition
As needed
-123.15156069
-122.31651100
45.70263875
45.23396470
7486291.770466
7761213.969893
524166.438198
818389.710605
None
Willamette River
Willamette Valley
flood
flood plain
1996 flood plain
Goal 5
None
Portland
Multnomah County
Washington County
Clackamas County
Oregon
None
These data are sold under the agreement that the user may use the data in its business activity and for no other purpose whatsoever. User shall not allow access to the data by any other person or organization, unless authorized in writing by the Metro DRC or, if the other party is a contractor providing services to a government requiring usage of the data in order to provide contractual services. User shall not duplicate the data except for the following: (1) User may make one backup copy of the data, and (2) User may translate the data into other formats and/or media. For full product purchase agreement that accompanies these data, please see http://storefront.metro-region.org/drc/rlislite/subscribe/license.cfm
ESRI ArcCatalog 9.2.1.1332
Feature Class
Not provided by SBGMaps. Accuracy varies depending on the quality of the DTM which was available in a given location. Accuracy is as good as or better than the tax lot layer. Because the two layers were rectified separately, one cannot assume that tax lots are correctly registered to the flood layer in all instances.
Vector
NA
Simple
FALSE
0
TRUE
FALSE
International feet
0.000328
0.000328
North American Datum of 1983/1991 (HPGN)
Geodetic Reference System 80
298.257222
GCS_North_American_1983_HARN
NAD_1983_HARN_StatePlane_Oregon_North_FIPS_3601
Explicit elevation coordinate included with horizontal coordinates
1.000000
FLOOD96
Polygons flooded during the 1996 flood
1
Flooded
SmallInteger
2
FLOOD96
5
0
Flood96metro.dbf
Description of the 1996 flood polygon attributes
Feature Class
0
Shape
Column containing the shape geometry
Coordinates defining the features.
Shape
Geometry
4
0
0
Esri
OBJECTID
OBJECTID
OID
4
10
0
Internal feature number.
ESRI
Sequential unique whole numbers that are automatically generated.
AREA_
AREA_
Double
8
38
8
Shape.STArea()
Shape.STArea()
Double
0
0
0
Shape.STLength()
Shape.STLength()
Double
0
0
0
Metro Data Resource Center
600 NE Grand Ave.
Portland
OR
97232
503 797-1742
503 797-1909
drc@metro.dst.or.us
The information in this file was derived from digital databases on Metro's GIS. Care was taken in the creation of this file. Metro cannot accept any responsibility for errors, omissions, or positional accuracy. There are no warranties, expressed or implied.
Shapefile, arc export, DXF or MapInfo. Hourly fee will be charged for conversion
9.785
CD-ROM
ISO9660 (DOS, Unix, or Macintosh)
withheld
Metro can place data on its FTP site on request. In most cases, a fee for the data will be charged. Call 503 797-1742 or email drc@metro.dst.or.us for instructions.
Call 503-797-1742 or email drc@metro.dst.or.us for information.
Downloadable Data
20060130
Metro Data Resource Center
Justin Houk
mailing and physical address
600 NE Grand Ave.
Portland
OR
97232
503 797-1664
503 797-1909
houkj@metro.dst.or.us
FGDC Content Standards for Digital Geospatial Metadata
19940608
en
local time
Version 6.2 (Build 9200) ; Esri ArcGIS 10.8.1.14362
flood96metro
7486291.770466
7761213.969893
818389.710605
524166.438198
1
-123.310977
-122.207371
45.898426
45.070751
1
ISO 19115 Geographic Information - Metadata
DIS_ESRI1.0
dataset
002
withheld
9.785
Feature Class
Feature Class
NAD_1983_HARN_StatePlane_Oregon_North_FIPS_3601
0
20210513
21354600
20210513
21354600
flood96metro
002
Projected
GCS_North_American_1983_HARN
Linear Unit: Foot (0.304800)
NAD_1983_HARN_StatePlane_Oregon_North_FIPS_3601
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20231116
15413100
1.0
TRUE
20210513