20240823
16143200
1.0
FGDC CSDGM Metadata
FALSE
CMZ_Areas
002
Projected
GCS_North_American_1983_HARN
Linear Unit: Foot (0.304800)
NAD_1983_HARN_Oregon_Statewide_Lambert_Feet_Intl
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20251023
15354100
20251023
15354100
Oregon Department of Geology and Mineral Industries
1 971 673 1555
1 971 673 1562
800 NE Oregon Street Suite 965
Portland
Oregon
97232
US
dogami-info@dogami.oregon.gov
When contacting DOGAMI about this data set, please reference the data set title or other identifying information in your correspondence. DOGAMI publications can be downloaded from https://www.oregon.gov/dogami/pages/default.aspx
2024
ArcGIS Metadata
1.0
Oregon Department of Geology and Mineral Industries
1 971 673 1555
1 971 673 1562
800 NE Oregon Street Suite 965
Portland
Oregon
97232
US
dogami-info@dogami.oregon.gov
When contacting DOGAMI about this data set, please reference the data set title or other identifying information in your correspondence. DOGAMI publications can be downloaded from https://www.oregon.gov/dogami/pages/default.aspx
2024
"GDB" Esri File Geodatabase
https://www.oregon.gov/dogami/pages/default.aspx
File Geodatabase Feature Class
Channel migration zone for the Zigzag River, Clackamas County, Oregon
2024
Oregon Department of Geology and Mineral Industries
Oregon Department of Geology and Mineral Industries
Portland, Oregon, USA
vector digital data
Oregon Department of Geology and Mineral Industries Open-File Report
O-24-09
Channel Migration Zone Maps for the Zigzag River, Clackamas County, Oregon
This study provides Oregon communities with new information about the natural hazards from channel migration. During 2023 and 2024, the Oregon Department of Geology and Mineral Industries (DOGAMI) produced channel migration zone maps for the Zigzag River in Clackamas County. This polygon represents the channel migration zone (CMZ). It identifies the area within which a given stream is most likely to move laterally and change its channel course during the next 30- and 100-years. The CMZ is comprised of the combined active channel; historical migration area; low, medium, and high erosion hazard areas; and avulsion hazard area.
This dataset was created to increase awareness of natural hazards, to be used within risk assessments, and to be used to identify, prioritize, and implement hazard mitigation actions.
This project was funded by a U.S. Federal Emergency Management Agency Cooperating Technical Partnership grant.
Oregon Department of Geology and Mineral Industries
1 971 673 1555
1 971 673 1562
800 NE Oregon Street Suite 965
Portland
Oregon
97232
US
dogami-info@dogami.oregon.gov
When contacting DOGAMI about this data set, please reference the data set title or other identifying information in your correspondence. DOGAMI publications can be downloaded from https://www.oregon.gov/dogami/pages/default.aspx
Christina Appleby
Oregon Department of Geology and Mineral Industries
United States
North America
Oregon
Clackamas
Oregon Geospatial Enterprise Office Metadata Keyword Thesaurus
geoscientificinformation
elevation
ISO 19115 Topic Category
counties
riparian areas
alluvium
fluvial
erosion
river
natural disasters
river channel
deposition
flood
floodplains
stream
watershed
Oregon Geospatial Enterprise Office Metadata Keyword Thesaurus
geoscientificinformation
elevation
counties
riparian areas
alluvium
fluvial
erosion
river
natural disasters
river channel
deposition
flood
floodplains
stream
watershed
United States
North America
Oregon
Clackamas
REPORT DATA: This product is for informational purposes and may not have been prepared for or be suitable for legal, engineering, or surveying purposes. Users of this information should review or consult the primary data and information sources to ascertain the usability of the information. This publication cannot substitute for site-specific investigations by qualified practitioners. Site-specific data may give results that differ from the results shown in the publication. See the accompanying text report for more details on the limitations of the methods and data used to prepare this publication.
Although these data have been processed successfully on a computer system at the Oregon Department of Geology and Mineral Industries, no warranty expressed or implied is made by DOGAMI regarding the utility of the data on any other system, nor shall the act of distribution constitute any such warranty.
Channel Migration Zone Maps for the Zigzag River, Clackamas County, Oregon
2024
1.0
Oregon Department of Geology and Mineral Industries
Oregon Department of Geology and Mineral Industries
Portland, Oregon, USA
Oregon Department of Geology and Mineral Industries Open-File Report
O-24-09
https://www.oregon.gov/dogami/pages/default.aspx
true
-121.950528
-121.831483
45.353711
45.3043
2024
Esri ArcGIS 13.5.3.57366
None
None
Attributes were visually reviewed for accuracy and completeness.
Database QA/QC was carried out, attribute field names were reviewed, and applicable topology checks were performed.
This dataset is complete for the lower 7.8 mi (12.5 km) of the Zigzag River in Clackamas County, beginning just upstream of the confluence with Lady Creek and ending at the confluence with the Sandy River.
This dataset is a compilation of feature classes that were each digitized at a scale of 1:4,000 or higher resolution. Future conditions and changes in hydrology, sediment supply, land use, riparian vegetation, and human modifications to the river and watershed may result in migration beyond the mapped CMZ. As a result, monitoring channel migration and remapping all CMZ components every 30 years or more frequently is recommended.
Not applicable.
The CMZ was created by combining the Low Hazard (100-Year) EHA and the AHA, which is inclusive of all areas within the AC, HMA, and Medium Hazard (30-Year) EHA. Please review the accompanying report for more details. This layer was generated using Esri ArcGIS v. 10.7.
Oregon Department of Geology and Mineral Industries
1 971 673 1555
1 971 673 1562
800 NE Oregon Street Suite 965
Portland
Oregon
97232
US
dogami-info@dogami.oregon.gov
When contacting DOGAMI about this data set, please reference the data set title or other identifying information in your correspondence. DOGAMI publications can be downloaded from https://www.oregon.gov/dogami/pages/default.aspx
Oregon Lidar Data Viewer
DOGAMI, 2022
2022
Oregon Department of Geology and Mineral Industries
Oregon Department of Geology and Mineral Industries
Portland, Oregon
raster digital data
https://gis.dogami.oregon.gov/maps/lidarviewer/
2022 OSIP Imagery
Oregon Statewide Imagery Program (OSIP) - Oregon Imagery Framework Implementation Team
2022-12-12
Oregon Geospatial Enterprise Office
Oregon Geospatial Enterprise Office
Portland, Oregon
raster digital data
Oregon Statewide Imagery Program
OSIP_2022
https://imagery.oregonexplorer.info/arcgis/rest/services/OSIP_2022
Zigzag_River_CMZ
Feature Class
0
OBJECTID
OBJECTID
OID
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.
Join_Count
Join_Count
Integer
4
0
0
TARGET_FID
TARGET_FID
Integer
4
0
0
RiverSegment
River segment identification label.
Oregon Department of Geology and Mineral Industries
RiverSegment
SmallInteger
2
0
0
Study_Link
Study_Link
String
255
0
0
StreamName
StreamName
String
255
0
0
Shape_Length_1
Shape_Length
Double
8
0
0
Shape_Area_1
Shape_Area
Double
8
0
0
Stud_Area
Study_Area
String
30
0
0
Shape_Length
Shape_Length
Double
8
0
0
Length of feature in internal units.
Esri
Positive real numbers that are automatically generated.
Shape_Area
Shape_Area
Double
8
0
0
Area of feature in internal units squared.
Esri
Positive real numbers that are automatically generated.
This polygon represents the channel migration zone (CMZ). It identifies the area within which a given stream is most likely to move laterally and change its channel course during the next 30- and 100-years. The CMZ is comprised of the combined active channel; historical migration area; low, medium, and high erosion hazard areas; and avulsion hazard area.
dataset
EPSG
6.12(9.0.0)
0
Simple
FALSE
0
TRUE
TRUE