Net Shore-Drift in Washington State

Metadata:


Identification_Information:
Citation:
Citation_Information:
Originator:
Shorelands and Environmental Assistance Program (SEA), Washington State Department of Ecology
Publication_Date: 20020901
Title: Net Shore-Drift in Washington State
Edition: 1
Geospatial_Data_Presentation_Form: vector digital data
Series_Information:
Series_Name: Net Shore-Drift in Washington State
Publication_Information:
Publication_Place: Olympia, Washington
Publisher: Washington State Department of Ecology
Online_Linkage: http://www.ecy.wa.gov/services/gis/data/data.htm#d
Description:
Abstract:
Littoral drift, or shore drift, is the process by which beach sediment is moved along the shoreline. Drift results primarily from the oblique approach of wind-generated waves and can therefore change in response to short-term (daily, weekly, or seasonally) shifts in wind direction. Over the long term, however, many shorelines exhibit a single direction of net shore drift. Net shore-drift is determined through geomorphologic analysis of beach sediment patterns and of coastal landforms.

Many shorelines can be divided into discrete littoral, or drift, cells, which are independent of one another and for which distinct sediment sources and sinks can be identified. This coverage denotes the extent of individual littoral cells and the direction of net shore-drift within each.

Purpose:
Heightened concerns about the adverse impact of shoreline modifications on geologic processes, and consequently, on nearshore biological resources has increased the need to provide information on longshore sediment transport in digital format.
Supplemental_Information:
During the late 1970s and early 1980s, the Department of Ecology supported Western Washington University in undertaking a series of county-by-county net shore-drift investigations under the supervision of Dr. Maurice Schwartz. Two reports in the early 1990s completed the net shore-drift mapping of Washington's marine shoreline. In addition to an Ecology report, each investigation resulted in a Master's thesis:

Skagit County - Keuler, 1979 Whatcom County - Jacobsen, 1980 King County - Chrzastowski, 1982 Thurston County - Hatfield, 1983 Mason County - Blankenship, 1983 Pierce County - Harp, 1983 Kitsap County - Taggart, 1984 Grays Harbor and Pacific Counties - Bronson, 1984 Jefferson and Clallam Counties (ocean coast) - Mahala, 1984 Clallam County (Strait of Juan de Fuca) - Bubnick, 1986 Parts of San Juan, Snohomish, Island, and Jefferson Counties - Johannessen, 1993 Grays Harbor, Willapa Bay, and the Columbia Estuary -Thomas, 1995

and a USGS publication: Map showing coastal erosion, sediment supply, and longshore transport in the Port Townsend 30- by 60-minute quadrangle, Puget Sound Region, Washington [Keuler, R.F., 1988, United States Geological Survey; Map 1198-E]

These reports have subsequently been compiled and republished as the Ecology reports cited below. Source materials for drift cells were done a different times. Each report in the series covers a different area.

Volume 1: Pacific Ocean and Strait of Juan de Fuca (Pacific, Grays Harbor, Jefferson, and Clallam Counties) [Schwartz et al., 1991, Ecology Report #00-06-30]

Volume 2: South Puget Sound (Mason, Thurston, and Pierce Counties) [Schwartz et al., 1991, Ecology Report #00-06-31]

Volume 3: Central Puget Sound (Kitsap, Pierce, and King Counties) [Schwartz et al., 1991, Ecology Report #00-06-32]

Volume 4: Hood Canal (Mason and Kitsap Counties) [Schwartz et al., 1991, Ecology Report #00-06-33]

Volume 5: Northern Bays and Straits (Whatcom and Skagit Counties) [Schwartz et al., 1991, Ecology Report #00-06-34]

Net Shore-Drive of San Juan, and parts of Jefferson, Island, and Snohomish Counties [Johannessen, 1992, Report 00-06-35]

Net Shore-Drift within Grays Harbor, Willapa Bay, and the Mouth of the Columbia River, Washington [Thomas, 1995, Report #00-06-36]

Time_Period_of_Content:
Time_Period_Information:
Multiple_Dates/Times:
Single_Date/Time:
Calendar_Date: 199106
Single_Date/Time:
Calendar_Date: 199203
Currentness_Reference: ground condition
Status:
Progress: Complete
Maintenance_and_Update_Frequency: As needed
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -124.807198
East_Bounding_Coordinate: -122.133906
North_Bounding_Coordinate: 49.102311
South_Bounding_Coordinate: 46.217454
Keywords:
Theme:
Theme_Keyword_Thesaurus: None
Theme_Keyword: drift
Theme_Keyword: erosion
Theme_Keyword: sediment
Theme_Keyword: sand
Theme_Keyword: beach
Theme_Keyword: coast
Theme_Keyword: marine
Theme_Keyword: drift
Theme_Keyword: sediment
Theme_Keyword: littoral
Place:
Place_Keyword_Thesaurus: None
Place_Keyword: Washington
Place_Keyword: state
Place_Keyword: Pacific
Place_Keyword: northwest
Place_Keyword: Puget
Access_Constraints: None
Use_Constraints: <http://www.ecy.wa.gov/copyright.html>
Point_of_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: Washington State Department of Ecology
Contact_Person: Brian Lynn
Contact_Address:
Address_Type: mailing
Address: P.O. Box 47600
City: Olympia
State_or_Province: Washington
Postal_Code: 98504-7600
Country: United States of America
Contact_Voice_Telephone: (360) 407-6224
Contact_Facsimile_Telephone: (360) 407-6902
Contact_Electronic_Mail_Address: brian.lynn@ecy.wa.gov
Hours_of_Service: 0800-1700 (Pacific)
Browse_Graphic:
Browse_Graphic_File_Name: driftcell.gif
Data_Set_Credit:
Washington State Department of Ecology, Shorelands and Environmental Assistance Program
Native_Data_Set_Environment:
Microsoft Windows 2000 Version 5.0 (Build 2195) Service Pack 4; ESRI ArcCatalog 9.1.0.722

Data_Quality_Information:
Completeness_Report:
Driftcells on shorelines abutting Puget Sound have been checked for accuracy. The Strait of Juan de Fuca and Pacific coast have not yet been checked for quality assurance.
Lineage:
Source_Information:
Source_Citation:
Citation_Information:
Originator:
Shorelands and Environmental Assistance Program, Washington State Department of Ecology
Publication_Date: June 1991
Title: Net Shore-Drift in Washington State
Edition: Version 2.0
Geospatial_Data_Presentation_Form: book
Series_Information:
Series_Name: Net Shore-Drift in Washington State
Publication_Information:
Publication_Place: Olympia, Washington
Publisher: Washington State Department of Ecology
Other_Citation_Details:
Source materials for driftcells were done a different times. Each report in the series covers a different area.

Volume 1: Pacific Ocean and Strait of Juan de Fuca (Pacific, Grays Harbor, Jefferson, and Clallam Counties); Volume 2: South Puget Sound (Mason, Thurston, and Pierce Counties); Volume 3: Central Puget Sound (Kitsap, Pierce, and King Counties); Volume 4: Hood Canal (Mason and Kitsap Counties); Volume 5: Northern Bays and Straits (Whatcom and Skagit Counties); Net Shore-Drive of San Juan, and parts of Jefferson, Island, and Snohomish Counties Net Shore-Drift within Grays Harbor, Willapa Bay, and the Mouth of the Columbia River, Washington Clallam County, Washington, Strait of Juan de Fuca, Net Shore-Drift

Type_of_Source_Media: paper
Source_Time_Period_of_Content:
Time_Period_Information:
Multiple_Dates/Times:
Single_Date/Time:
Calendar_Date: 199106
Time_of_Day: unknown
Single_Date/Time:
Calendar_Date: 199203
Time_of_Day: Unknown
Single_Date/Time:
Calendar_Date: 199502
Time_of_Day: Unknown
Source_Contribution:
During the late 1970s and early 1980s, the Department of Ecology supported Western Washington University in undertaking a series of county-by-county net shore-drift investigations under the supervision of Dr. Maurice Schwartz. Two reports in the early 1990s completed the net shore-drift mapping of Washington's marine shoreline. In addition to an Ecology report, each investigation resulted in a Master's thesis:

Skagit County - Keuler, 1979 Whatcom County - Jacobsen, 1980 King County - Chrzastowski, 1982 Thurston County - Hatfield, 1983 Mason County - Blankenship, 1983 Pierce County - Harp, 1983 Kitsap County - Taggart, 1984 Grays Harbor and Pacific Counties - Bronson, 1984 Jefferson and Clallam Counties (ocean coast) - Mahala, 1984 Clallam County (Strait of Juan de Fuca) - Bubnick, 1986 Parts of San Juan, Snohomish, Island, and Jefferson Counties - Johannessen, 1993 Grays Harbor, Willapa Bay, and the Columbia Estuary -Thomas, 1995

and a USGS publication: Map showing coastal erosion, sediment supply, and longshore transport in the Port Townsend 30- by 60-minute quadrangle, Puget Sound Region, Washington [Keuler, R.F., 1988, United States Geological Survey; Map 1198-E]

These reports have subsequently been compiled and republished as the Ecology reports cited below. Source materials for drift cells were done a different times. Each report in the series covers a different area.

Volume 1: Pacific Ocean and Strait of Juan de Fuca (Pacific, Grays Harbor, Jefferson, and Clallam Counties) [Schwartz et al., 1991, Ecology Report #00-06-30]

Volume 2: South Puget Sound (Mason, Thurston, and Pierce Counties) [Schwartz et al., 1991, Ecology Report #00-06-31]

Volume 3: Central Puget Sound (Kitsap, Pierce, and King Counties) [Schwartz et al., 1991, Ecology Report #00-06-32]

Volume 4: Hood Canal (Mason and Kitsap Counties) [Schwartz et al., 1991, Ecology Report #00-06-33]

Volume 5: Northern Bays and Straits (Whatcom and Skagit Counties) [Schwartz et al., 1991, Ecology Report #00-06-34]

Net Shore-Drive of San Juan, and parts of Jefferson, Island, and Snohomish Counties [Johannessen, 1992, Report 00-06-35]

Net Shore-Drift within Grays Harbor, Willapa Bay, and the Mouth of the Columbia River, Washington [Thomas, 1995, Report #00-06-36]

Process_Step:
Process_Description:
BACKGROUND

Drift cells were digitized as a single point, the point being the end of the drift cell with the largest measure on the underlying shoreline route. The end with the largest measure as a rule will be: * on marine islands, the counter clockwise most point of the cell on the island shoreline * on the main marine shoreline, the point closest to Oregon if one were walking the shoreline from Canada to Oregon.

After digitizing of the points and entry of point attributes, the points were converted into linear events via point2driftcell.aml. The logic of the AML is: * get the route measure for each drift cell point * assign the route measure at the point as the to measure of the event * assign the route measure of the nearest clockwise point on the shoreline as the from measure of the event. * assign the drift cell identifier as the unique event identifier * assign the drift cell type as an event attribute * If the event is the first one on the route, assign 0.000 as the from measure. * (For islands only) for the last event on the route, assume it is a part of the first event on the route (as shorelines are continuous around an island). Assign the identifier and type from the first event and assign the route highmeasure as the to measure.

All segments of the shoreline were covered by one and only one drift cell event (no gaps, no overlaps).

For each drift cell, two attributes were recorded: * The drift cell identifier * The drift cell type Drift cell identifiers and types were taken from the drift cell maps in the books.

Drift cells were categorized as one of 5 types: * Clockwise drift cell (right to left when looking at the shore) * Counter clockwise drift cell (left to right when looking at the shore) * No appreciable net shore drift (NANSD) * Divergence zone * Undefined

For the first two types of drift cells, the identifiers were used as defined on the maps. For the others, the identifier is composed by the identifiers of the upshore and downshore drift cells separated by a slash (the identifier with the lower number in it is entered first).

Ex. A NANSD cell between cells BL-1 and BL-2 will be identified as BL-1/BL-2.

PROCEDURE

Tiling: For the digitizing effort, the project was tiled by county as that is how the data was originally gathered and published. After all of the counties were digitized and edited, the county data was merged into a single statewide event table.

Source Materials: The source materials were the Net Shore Drift volumes and the USGS 1:24,000 quadrangle maps plus any other supporting material available to the cartographer.

Shoreline coverage: The drift cell points were aligned with a 24k scale marine shoreline coverage.

Attributes: For each drift cell point, two attributes were entered: * The unique driftcell identifier into a 20 character field named DRIFTCELL_NR and is taken or derived from the identifiers in the booklets. * The driftcell type code into a 2 character field named DRIFTCELL_TY_CD and must be one of five codes.

The driftcell type codes are:

Code Definition

LtoR - Left to Right Drift Cell (counter clockwise)

RtoL - Right to Left Drift Cell (clockwise)

DZ - Zone of Divergence

NAD - No Appreciable Net Shore Drift (NANSD)

UN - Undefined drift cell type

Placement: For consistency, the drift cell points were located as close as possible to the beginning and end of the drift cell arrows on the paper maps.

Process_Date: 20030303
Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: Washington State Department of Ecology
Contact_Person: Brian Lynn
Contact_Position: Shorelines & Environmental Assistance Program, Coastal/Shore
Contact_Address:
Address_Type: mailing
Address: P.O. Box 47600
City: Olympia
State_or_Province: Washington
Postal_Code: 98504-7600
Country: United States of America
Contact_Voice_Telephone: (360) 407-6224
Contact_Facsimile_Telephone: (360) 407-6902
Contact_Electronic_Mail_Address: brian.lynn@ecy.wa.gov
Hours_of_Service: 0800-1700 (Pacific) (Mon-Fri)
Cloud_Cover: Unknown

Spatial_Data_Organization_Information:
Direct_Spatial_Reference_Method: Vector
Point_and_Vector_Object_Information:
SDTS_Terms_Description:
SDTS_Point_and_Vector_Object_Type: String
Point_and_Vector_Object_Count: 1977
SDTS_Terms_Description:
SDTS_Point_and_Vector_Object_Type: Point
Point_and_Vector_Object_Count: 4

Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Planar:
Map_Projection:
Map_Projection_Name: Lambert Conformal Conic
Lambert_Conformal_Conic:
Standard_Parallel: 45.833333
Standard_Parallel: 47.333333
Longitude_of_Central_Meridian: -120.500000
Latitude_of_Projection_Origin: 45.333333
False_Easting: 1640416.666667
False_Northing: 0.000000
Planar_Coordinate_Information:
Planar_Coordinate_Encoding_Method: coordinate pair
Coordinate_Representation:
Abscissa_Resolution: 0.002048
Ordinate_Resolution: 0.002048
Planar_Distance_Units: survey feet
Geodetic_Model:
Horizontal_Datum_Name: D_North_American_1983_HARN
Ellipsoid_Name: Geodetic Reference System 80
Semi-major_Axis: 6378137.000000
Denominator_of_Flattening_Ratio: 298.257222

Entity_and_Attribute_Information:
Detailed_Description:
Entity_Type:
Entity_Type_Label: driftcell
Entity_Type_Definition: Attribute table
Attribute:
Attribute_Label: FID
Attribute_Definition: Internal feature number.
Attribute_Definition_Source: ESRI
Attribute_Domain_Values:
Unrepresentable_Domain:
Sequential unique whole numbers that are automatically generated.
Attribute:
Attribute_Label: WS_END_AD
Attribute_Definition:
Water shoreline ending address. Addresses end where the shoreline "leaves" the county at its southern or western border.
Attribute:
Attribute_Label: DCELL_NR
Attribute_Definition:
A 20 character field unique driftcell identifier name that is taken or derived from the identifiers in the original hardcopy reports.
Attribute:
Attribute_Label: Shape
Attribute_Definition: Feature geometry.
Attribute_Definition_Source: ESRI
Attribute_Domain_Values:
Unrepresentable_Domain: Coordinates defining the features.
Attribute:
Attribute_Label: WS_LLID_NR
Attribute_Definition: Longitude latitude identification number for the shoreline arc.
Attribute:
Attribute_Label: DC_DS_PATH
Attribute_Definition_Source: Department of Ecology
Attribute_Measurement_Frequency: As needed
Attribute:
Attribute_Label: WS_BEGIN_A
Attribute_Definition:
Water shoreline beginning address. Addresses begin where the shoreline "enters" the county at its northern or eastern border.
Attribute:
Attribute_Label: CELL_TYPE_
Attribute_Definition: Driftcell flow pattern
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: LtoR
Enumerated_Domain_Value_Definition: Left to Right Drift Cell (counter clockwise)
Enumerated_Domain:
Enumerated_Domain_Value: RtoL
Enumerated_Domain_Value_Definition: Right to Left Drift Cell (clockwise)
Enumerated_Domain:
Enumerated_Domain_Value: DZ
Enumerated_Domain_Value_Definition: Zone of Divergence
Enumerated_Domain:
Enumerated_Domain_Value: NAD
Enumerated_Domain_Value_Definition: No Appreciable Net Shore Drift (NANSD)
Enumerated_Domain:
Enumerated_Domain_Value: UN
Enumerated_Domain_Value_Definition: Undefined drift cell type
Overview_Description:
Entity_and_Attribute_Overview:
Arc attribute table includes identifiers for line and denotes driftcell action.
Entity_and_Attribute_Detail_Citation: From paper maps in Net Shore-Drift in Washington State series.

Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: Washington State Department of Ecology
Contact_Position: Spatial Database Administrator
Contact_Address:
Address_Type: mailing address
Address: PO Box 47600
City: Olympia
State_or_Province: Washington
Postal_Code: 98504-7600
Country: United States of America
Contact_Address:
Address_Type: physical address
Address: 300 Desmond Drive
City: Olympia
State_or_Province: Washington
Postal_Code: 98503
Country: United States of America
Contact_Voice_Telephone: (360) 407-6121
Contact_Facsimile_Telephone: (360) 407-6493
Contact_Electronic_Mail_Address: gis@ecy.wa.gov
Hours_of_Service: 0800-1700 (Pacific)
Resource_Description: ArcGIS data layer
Distribution_Liability:
The Washington State Department of Ecology provides these geographic data "AS IS" WITHOUT A WARRANTY OF ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR USE, AND/OR NON-INFRINGEMENT.
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Format_Name: SHP
Format_Specification: shapefile
Transfer_Size: 2.914
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name: <http://www.ecy.wa.gov/services/gis/data/data.htm#d>
Offline_Option:
Offline_Media: CD-ROM
Fees: $75/hour, one hour minimum
Ordering_Instructions:
Digital data order form is available at <http://www.ecy.wa.gov/services/gis/data/digital.doc>
Turnaround: Usually one week
Custom_Order_Process:
Available in other formats by request (may involve a fee). Please contact: Administrative Services Section, GIS Unit, Washington State Department of Ecology.
Technical_Prerequisites: Able to use ESRI shapefiles

Metadata_Reference_Information:
Metadata_Date: 20060621
Metadata_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: Washington State Department of Ecology
Contact_Position: Spatial Database Administrator
Contact_Address:
Address_Type: mailing and physical address
Address:
P.O. Box 47600, 300 Desmond Drive
City: Olympia
State_or_Province: Washington
Postal_Code: 98504-7600
Country: United States of America
Contact_Voice_Telephone: (360) 407-6121
Contact_Facsimile_Telephone: (360) 407-6493
Contact_Electronic_Mail_Address: gis@ecy.wa.gov
Hours_of_Service: 0800-1700 (Pacific)
Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
Metadata_Time_Convention: local time
Metadata_Access_Constraints: None
Metadata_Use_Constraints: None
Metadata_Security_Information:
Metadata_Security_Classification: Unclassified
Metadata_Extensions:
Online_Linkage: <http://www.esri.com/metadata/esriprof80.html>
Profile_Name: ESRI Metadata Profile

Generated by mp version 2.8.6 on Wed Jun 21 09:39:53 2006