Dredge Material Disposal Sites for Siletz Estuary Plan
Identification_Information
Data_Quality_Information
Spatial_Data_Organization_Information
Spatial_Reference_Information
Entity_and_Attribute_Information
Distribution_Information
Metadata_Reference_Information
Identification Information
Section Index
Citation:
Citation Information:
Originator: Robert Cortright,Jeffrey Weber,Robert Bailey
Publication Date: 1987
Title: Dredge Material Disposal Sites for Siletz Estuary Plan
Edition: 1987
Geospatial Data Presentation Form: Map
Publication Information:
Publication Place: Salem, Oregon
Publisher: Oregon Ocean-Coastal Management Program
Other Citation Details:
Original Base maps were prepared by the Division of State
Lands in 1972 and 1973 using aerial photographs from the
U.S. Geological Survey (USGS EROS Data Center, NASA). These
base maps were used in 1978 and 1979 by the Oregon
Department of Fish and Wildlife in its mapping of estuarine
habitats as part of DLCD's estuary inventory project. ODFW
used aerial photography, published studies, and some onsite
investigation to prepare its maps of estuarine habitats.
Estuary and shoreland planning designations were compiled
from local plans in 1986-87 by DLCD. Neither the DSL base
nor ODFW study cover the Columbia River estuary. The base
map for this area is a 1"" = 1000' map prepared by the
Columbia River Estuary Data Development Project (CREDDP) in
1983. Habitat information for the Columbia River was
prepared by staff of the Columbia River Estuary Study Task
Force (CREST) in 1985. CREST compiled various CREDDP
studies, converted data to the ODFW habitat classification,
and prepared the habitat map provided here.
Comprehensive plan and habitat maps were digitized by the
Oregon Department of Energy in 1986 and 1987 using an
ARC/INFO Geographic Information System. Full scale maps
(usually at 1"" = 1000') were photographically reduced to
fit the format of the Plan Book document, and are produced
at varying scales.
Digitized maps were reviewed by DOE and DLCD staff to
identify inconsistencies and digitizing errors. The most
common inconsistency was disagreement between the ODFW
Habitat Map and the local plan maps in establishing the
location of the estuary shoreline. DLCD staff reviewed
aerial photographs. plan documents, and consulted with
local planners to resolve inconsistencies.
Online Linkage: http://www.lcd.state.or.us/coast/
Larger Work Citation:
Citation Information:
Originator: Oregon Ocean-Coastal Management Program
Publication Date: 1987
Title: Estuary Plans Book
Publication Information:
Publication Place: Salem, Oregon
Publisher: Oregon Ocean-Coastal Management Program
Online Linkage: http://www.inforain.org/mapsatwork/oregonestuary/
Description:
Abstract: This coverage provides information about the location and extent dredge material disposal sites in the Siletz estuary, as in the Oregon Estuary Plan Book.
Purpose:
Historically, dumping of material dredged from navigation channels and harbors has been a major source of damage to
estuarine resources. Estuary plans will avoid or minimize further losses by identifying appropriate locations and techniques for disposing of dredge material. Plans for each estuary where dredging is proposed include a dredged material disposal (DMD) plan. The DMD plan includes several components: 1. An estimate of the amount and location of dredging likely to occur over the next 20 years. This estimate is based on the development designations approved in the plan and needs for channel maintenance or deepening in approved navigation channels. 2. An analysis of potential sites and techniques for disposal of dredged material. The particular types of sites and methods for dredged material disposal vary, depending upon the physical setting of the estuary, the availability and cost of upland disposal sites, and the amount of material that needs to be dredged and disposed of. 3. Designation and protection of sufficient appropriate sites for future use for dredged
material disposal.
Supplemental Information:
Estuary plans contain a variety of approaches to protect designated dredged material disposal (DMD) sites. Despite
differences, most protection measures preclude land uses on the site that would prevent its use for dredged material disposal. Temporary uses and other uses which do not involve extensive improvements, such as parking, storage, or farming, are allowed. Uses which would involve more extensive capital improvements or the extension of utilities are restricted or prohibited. Protective zones typically contain provisions which remove protective zoning once the site has been fully used for disposal. Some plans and ordinances allow protective zoning to be removed if the site is replaced by an equally suitable site. Some jurisdictions have inventoried DMD sites that do not merit the same protection as priority sites. Called "Reserve" or "Inventory" sites, they are generally not restricted as to permitted uses. Protection for these secondary DMD sites usually only involves special notice and review requirements for proposed land uses. Such provisions delay
approval for up to 60 to 90 days to allow interested parties or agencies to negotiate for use of the site for dredge spoils before the land use is officially approved.
Types of Dredged Material Disposal Sites:
Uplands - These are shoreland sites that are either vacant or have only minimal development. Often marginal agricultural lands are designated for dredged material disposal. In non-agricultural areas, dredged material disposal can serve to make a site more developable. In EFU-zoned areas, DMD plans typically require that the area be restored to agricultural use once disposal is complete.
Flow-lane Disposal - Flow-lane disposal involves the dumping of dredged material back into the estuary to allow river currents and tidal action to push the added material out of the estuary. Designation of flow-lane sites requires careful study of estuarine hydraulics to assure that dumped material is adequately flushed out of the estuary and does not pile up and smother productive subtidal or intertidal areas.
Development Sites - Dredged material is often used as a source of fill material for approved projects in development management units. It is difficult to estimate the capacity of such sites because the amount of fill allowed will usually be determined in the permit process, when the details of the particular project are known.
Ocean Disposal - Ocean disposal of dredged material is regulated by the Environmental Protection Agency (EPA). EPA-approved sites are designated outside a number of the state's important ports, including the Columbia River, Tillamook
Bay, Depoe Bay, Yaquina Bay, and Coos Bay. Ocean disposal involves transporting material offshore on a barge or in a
hopper dredge to be dumped in open ocean waters.
Time Period of Content:
Time Period Information:
Range of Dates/Times:
Beginning Date: 1987
Beginning Time: Unknown
Ending Date: 1987
Ending Time: Unknown
Currentness Reference: 1987
Status:
Progress: Complete
Maintenance and Update Frequency: Continually
Spatial Domain:
Bounding Coordinates:
West Bounding Coordinate: -120.9177
East Bounding Coordinate: -120.7303
North Bounding Coordinate: 43.4975
South Bounding Coordinate: 43.3605
Keywords:
Theme:
Theme Keyword Thesaurus: None
Theme Keyword: dredge
Theme Keyword: estuary
Theme Keyword: coast
Theme Keyword: oregon
Place:
Place Keyword Thesaurus: None
Place Keyword: oregon
Place Keyword: siletz
Point of Contact:
Contact Information:
Contact Organization Primary:
Contact Organization:
Oregon Ocean Coastal Management Program - Department of
Land Conservation and Development
Contact Person: Tanya Haddad
Contact Position: DEMIS Coordinator
Contact Address:
Address Type: mailing and physical address
Address: 800 NE Oregon Street #18
City: Portland
State or Province: Oregon
Postal Code: 97232
Country: USA
Contact Voice Telephone: 503-731-4065 x30
Contact Facsimile Telephone: 503-731-4068
Contact Electronic Mail Address: tanya.haddad@state.or.us
Native Data Set Environment: ArcView version 3.1 shapefile format
Data Quality Information
Section Index
Attribute Accuracy:
Attribute Accuracy Report:
This data was reviewed by Brad Kahn/Chad Nelsen at Oregon DLCD in June 1997 to check for the accuracy of the
attributes. The Oregon Estuary Plan Book was used as a reference for this review.
Completeness Report: This coverage is part of the larger data set which comprises the Oregon Estuary Plan Book in digital format.
Lineage:
Source Information:
Source Citation:
Citation Information:
Originator: Robert Cortright,Jeffrey Weber,Robert Bailey
Publication Date: 1987
Title: Dredge Material Disposal Sites for Columbia Estuary Plan
Edition: 1987
Geospatial Data Presentation Form: Map
Publication Information:
Publication Place: Salem, Oregon
Publisher: Oregon Ocean-Coastal Management Program
Other Citation Details:
Original Base maps were prepared by the Division of State
Lands in 1972 and 1973 using aerial photographs from the
U.S. Geological Survey (USGS EROS Data Center, NASA). These
base maps were used in 1978 and 1979 by the Oregon
Department of Fish and Wildlife in its mapping of estuarine
habitats as part of DLCD's estuary inventory project. ODFW
used aerial photography, published studies, and some onsite
investigation to prepare its maps of estuarine habitats.
Estuary and shoreland planning designations were compiled
from local plans in 1986-87 by DLCD. Neither the DSL base
nor ODFW study cover the Columbia River estuary. The base
map for this area is a 1"" = 1000' map prepared by the
Columbia River Estuary Data Development Project (CREDDP) in
1983. Habitat information for the Columbia River was
prepared by staff of the Columbia River Estuary Study Task
Force (CREST) in 1985. CREST compiled various CREDDP
studies, converted data to the ODFW habitat classification,
and prepared the habitat map provided here.
Comprehensive plan and habitat maps were digitized by the
Oregon Department of Energy in 1986 and 1987 using an
ARC/INFO Geographic Information System. Full scale maps
(usually at 1"" = 1000') were photographically reduced to
fit the format of the Plan Book document, and are produced
at varying scales.
Digitized maps were reviewed by DOE and DLCD staff to
identify inconsistencies and digitizing errors. The most
common inconsistency was disagreement between the ODFW
Habitat Map and the local plan maps in establishing the
location of the estuary shoreline. DLCD staff reviewed
aerial photographs. plan documents, and consulted with
local planners to resolve inconsistencies.
Online Linkage: http://www.lcd.state.or.us/coast/
Larger Work Citation:
Citation Information:
Originator: Oregon Ocean-Coastal Management Program
Publication Date: 1987
Title: Estuary Plans Book
Publication Information:
Publication Place: Salem, Oregon
Publisher: Oregon Ocean-Coastal Management Program
Online Linkage: http://www.inforain.org/mapsatwork/oregonestuary/
Source Time Period of Content:
Time Period Information:
Range of Dates/Times:
Beginning Time: Unknown
Ending Time: Unknown
Source Citation Abbreviation: ArcInfo e00 files
Process Step:
Process Description:
These files were initially part of a zipped directory (estuary.zip) directory was unzipped using the Gunzip utility. Next, the .e00 files were imported using the ArcInfo import utility. coverage was originally projected in UTM zone 10. It was reprojected to the Oregon State Lambert projection.
Cloud Cover: 0
Spatial Data Organization Information
Section Index
Direct Spatial Reference Method: Vector
Point and Vector Object Information:
SDTS Terms Description:
SDTS Point and Vector Object Type: GT-polygon composed of chains
Point and Vector Object Count: 2
Spatial Reference Information
Section Index
Horizontal Coordinate System Definition:
Planar:
Map Projection:
Map Projection Name: Lambert Conformal Conic
Lambert Conformal Conic:
Standard Parallel: 43
Standard Parallel: 45.5
Longitude of Central Meridian: -120.5
Latitude of Projection Origin: 41.75
False Easting: 400000
False Northing: 0
Planar Coordinate Information:
Planar Coordinate Encoding Method: Coordinate Pair
Coordinate Representation:
Abscissa Resolution: 0
Ordinate Resolution: 0
Planar Distance Units: international feet
Geodetic Model:
Horizontal Datum Name: North American Datum of 1983
Ellipsoid Name: Geodetic Reference System 80
Semi-major Axis: 6378137
Denominator of Flattening Ratio: 298.257
Entity and Attribute Information
Section Index
Overview Description:
Entity and Attribute Overview:
The only special attribute (beyond the standard arcInfo software generated attributes) attached to these polygons is LABEL.
Label: This attribute identifies the specific dredge material disposal site, as classified in the Oregon Estuary Plan Book.
Distribution Information
Section Index
Distributor:
Contact Information:
Contact Organization Primary:
Contact Organization: Oregon Ocean Coastal Management Program - Department of
Contact Person: Tanya Haddad
Contact Position: DEMIS Coordinator
Contact Address:
Address Type: mailing and physical address
Address: 800 NE Oregon Street #18
City: Portland
State or Province: Oregon
Postal Code: 97232
Country: USA
Contact Voice Telephone: 503-731-4065 x30
Contact Facsimile Telephone: 503-731-4068
Contact Electronic Mail Address: tanya.haddad@state.or.us
Resource Description: Siletz EPB DMD file
Distribution Liability:
These data and associated data files are provided "as is," without warranty to their performance, merchantable state, or fitness for any particular purpose. The entire risk associated with the results and performance of these data is assumed by the user. This data is not for
navigational or legal purposes.
Custom Order Process: Please Contact Randy Dana at the Oregon Coastal program of DLCD. randy.dana@state.or.us
Available Time Period:
Time Period Information:
Single Date/Time:
Calendar Date: 1987
Time of Day: Unknown
Metadata Reference Information
Section Index
Metadata Date: 4/1/2002
Metadata Review Date: 4/1/2002
Metadata Future Review Date:
Metadata Contact:
Contact Information:
Contact Organization Primary:
Contact Organization:
Oregon Ocean Coastal Management Program - Department of
Land Conservation and Development
Contact Person: Tanya Haddad
Contact Position: DEMIS Coordinator
Contact Address:
Address Type: mailing and physical address
Address: 800 NE Oregon Street #18
City: Portland
State or Province: Oregon
Postal Code: 97232
Country: USA
Contact Voice Telephone: 503-731-4065 x30
Contact Facsimile Telephone: 503-731-4068
Contact Electronic Mail Address: tanya.haddad@state.or.us
Metadata Standard Name: FGDC CSDGM
Metadata Standard Version: FGDC-STD-001-1998
SMMS Metadata report generated 4/18/2002