Deep Landslide Susceptibility, Multnomah County
54569
EGH_Public
STAND-ALONE
landslide_sscpt_deep_mult_dogami
Hazard
50012
This layer is a deep landslide susceptibility map. The symbology on this map includes high and moderate susceptibility zones. The deep susceptibility zones were established based upon location and proximity to deep landslide deposits and head scarps, buffers along the landslide head scarps, susceptible geologic units, slope angles, and mapper judgement following protocol developed by Burns (2008).
A landslide inventory database was prepared by following the Protocol for Inventory Mapping of Landslide Deposits from Light Detection and Ranging (lidar) Imagery developed by Burns and Madin (2009). Using the lidar-based landslide inventory and several other data sets, a deep landslide (failure depth greater than 15 ft [4.5 m]) susceptibility map was created following a method developed by Burns and Mickelson (2016). Deep-landslide susceptibility zones were established from locations and proximity to deep-landslide deposits and head scarps, head scarp buffers, susceptible geologic units, slope angles, and mapper judgment. This map cannot serve as a substitute for site-specific investigations by qualified practitioners. Site-specific data may give results that differ from those shown on this map. The recommended map scale for this data is 1:8,000 as displayed on this map.
2018-05-31 07:05:00.0
691008.440288708
864002.792650915
1458429.97145669
1349592.3914042
Multnomah County
DOGAMI
None
File Geodatabase Feature Class
withheld
STAND-ALONE
Deep_LS_Susceptibility
2018-05-03 11:41:00.0
3
7
None
Simple
FALSE
0
TRUE
FALSE
landslide_sscpt_deep_mult_dogami
54106
5095
2018-04-13 14:14:00.0
2018-04-13 14:14:00.0
1
Feature Class
0
OBJECTID_1
OBJECTID_1
OID
4
0
0
Internal feature number.
Esri
Sequential unique whole numbers that are automatically generated.
OBJECTID
OBJECTID
Integer
4
0
0
Internal feature number.
Esri
Sequential unique whole numbers that are automatically generated.
Shape
Shape
Geometry
0
0
0
Feature geometry.
Esri
Coordinates defining the features.
V5
V5
Integer
4
0
0
Shape_Leng
Shape_Leng
Double
8
0
0
acres
acres
Single
4
0
0
Shape_Length
Shape_Length
8
Numeric
50099
2018-04-13 14:14:00.0
50099
2018-04-13 14:14:00.0
1
1
0
2
327796
Shape_Length
Double
8
0
0
Esri
Positive real numbers that are automatically generated.
Shape_Area
Shape_Area
8
Numeric
50099
2018-04-13 14:14:00.0
50099
2018-04-13 14:14:00.0
1
1
0
2
327797
Shape_Area
Double
8
0
0
Esri
Positive real numbers that are automatically generated.
State of Oregon, DOGAMI
Paul Cone
City of Portland - BTS/CGIS
503 823-5198
503 823-9176
CGIS@portlandoregon.gov
107
Mailing and Physical Address
1120 SW Fifth Avenue, Suite #450
Portland
OR
97204
503-823-4071
Paul.Cone@portlandoregon.gov
50133
The information in this file was derived from digital databases on the City of Portland GIS. Care was taken in the creation of this file. The City cannot accept any responsibility for errors, omissions, or positional accuracy. There are no warranties, expressed or implied.
ArcGIS
Not requested for Open Data site
withheld
None, for online data
2018-04-13 12:33:00.0
2018-05-31 07:05:00.0
State of Oregon, DOGAMI
DOGAMI
State of Oregon, DOGAMI
State of Oregon - DOGAMI
Mailing and Physical Address
800 NE Oregon Street, Suite 965
Portland
OR
97232-2162
971-673-1555
971-673-1562
alison.ryan@state.or.us
50171
5282
2018-04-13 12:33:00.0
5282
2018-04-13 12:33:00.0
2
1442
5282
50099
1
Esri ArcGIS 12.9.4.32739
regulatory_landslide_hazard_area
regulatory_landslide_hazard_area
002
Projected
GCS_North_American_1983_HARN
Linear Unit: Foot (0.304800)
NAD_1983_HARN_StatePlane_Oregon_North_FIPS_3601_Feet_Intl
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File Geodatabase Feature Class
dataset
EPSG
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