2008 Blowdown Survey

Metadata also available as

Metadata:


Identification_Information:
Citation:
Citation_Information:
Originator:
REQUIRED: The name of an organization or individual that developed the data set.
Publication_Date: Unknown
Title: 2008 Blowdown Survey
Geospatial_Data_Presentation_Form: vector digital data
Online_Linkage:
\\SNARF\AM\div_lm\users\sdel490\Wind\08BlowdownSurvey\08_Blowdown_Survey.shp
Description:
Abstract:
BLOWDOWN08_SURVEY is a coverage of the March 6 and 7, 2008 aerial survey of blowdown from the December 1-3, 2007 extratropical cyclone. BLOWDOWN08_SURVEY provides polygons and attributes of the observed locations and percentages of blowdown for both conifer and hardwood forest types.

During the period of December 1-3, 2007, an extratropical cyclone of unusual magnitude struck areas of coastal Oregon and Washington. Over a period of three days, two separate storms impacted the coast with hurricane-force gusts and heavy rain. The region between approximately Newport, OR, and Hoquiam, WA, received the strongest winds since the great Columbus Day Storm of 1962, with some areas of southwest Washington possibly receiving even stronger winds The storm was believed to have caused significant tree windthrow along the coast in a 30-mile wide strip, with the more intense disturbance occurring south of Grays Harbor.

Landowners were concerned about recovering value and restoring stands affected by the storms. Large amounts of downed wood have potential to contribute to insect infestations and may also pose a wildfire threat. The Washington Department of Natural Resources, small landowners, and forestry consultants expressed interest in a comprehensive damage map of the area.

On March 6 and 7, 2008, the tree blowdown aerial survey was flown in western Washington. The aerial survey was flown at a speed of 90-120 mph and at a height of approximately 1,500 feet above ground level. Two observers (one on each side of the plane) looked out over a 1.5 mile swath of forestland and marked on a digital touch screen computer areas with wind thrown trees. Percentage of stand affected was assigned to each recorded digital polygon, as well as whether the trees were conifers or hardwoods. A third surveyor was in the plane on March 6th, taking photographs of the wind thrown trees.

Purpose:
During the period of December 1-3, 2007, an extratropical cyclone of unusual magnitude struck areas of coastal Oregon and Washington. Over a period of three days, two separate storms impacted the coast with hurricane-force gusts and heavy rain. The region between approximately Newport, OR, and Hoquiam, WA, received the strongest winds since the great Columbus Day Storm of 1962, with some areas of southwest Washington possibly receiving even stronger winds

The storm was believed to have caused significant tree windthrow along the coast in a 30-mile wide strip, with the more intense disturbance occurring south of Grays Harbor. Landowners were concerned about recovering value and restoring stands affected by the storms. Large amounts of downed wood have potential to contribute to insect infestations and may also pose a wildfire threat. The Washington Department of Natural Resources, small landowners, and forestry consultants expressed interest in a comprehensive damage map of the area.

On March 6th and 7th, 2008, an aerial survey was conducted to map the tree blowdown.

Supplemental_Information:
Approximately 1.5 million acres (2,300 square miles) were surveyed for tree blowdown in western Washington. In the area surveyed, approximately 29,000 acres of tree blowdown was mapped. 27,000 acres were wind thrown conifers and approximately 2,000 acres were hardwoods. While the species of the blown down trees was not recorded on maps during the survey, Douglas-fir was observed to be the dominant conifer species affected by the wind and alder the dominant hardwood.
Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: March 7, 2008
Currentness_Reference: publication date
Status:
Progress: Complete
Maintenance_and_Update_Frequency: None planned
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -124.708887
East_Bounding_Coordinate: -123.087124
North_Bounding_Coordinate: 48.391641
South_Bounding_Coordinate: 46.235929
Keywords:
Theme:
Theme_Keyword_Thesaurus: Tree Blowdown Aerial Survey 2008 Report
Theme_Keyword: Wind
Theme_Keyword: Windthrow
Theme_Keyword: Blowdown
Theme_Keyword: Tree Blowdown Aerial Survey 2008
Theme_Keyword: Tree Blowdown Aerial Survey
Theme_Keyword: Forest Health Program
Theme_Keyword: Storm
Theme_Keyword: 2007 Storm
Theme_Keyword: extratropical cyclone
Theme:
Theme_Keyword_Thesaurus: ISO 19115 Topic Category
Theme_Keyword: ClimatologyMeteorologyAtmosphere
Place:
Place_Keyword_Thesaurus: Tree Blowdown Aerial Survey 2008 Report
Place_Keyword: Washington
Place_Keyword: Western Washington
Place_Keyword: Coast
Place_Keyword: Oregon
Place_Keyword: Washington and Oregon coasts
Temporal:
Temporal_Keyword_Thesaurus: Tree Blowdown Aerial Survey 2008 Report
Temporal_Keyword: 2008
Temporal_Keyword: March 2008
Temporal_Keyword: December 2007
Access_Constraints:
For use within the Washington State Department of Natural Resources.
Use_Constraints:
Reproduction or redistribution of copyrighted digital data sets or products derived from outside of licensees' organization or entity is expressly forbidden. The only exception is redistribution to consultants working for the licensee, and then only for purposes, related to work for the licensee. Such consultants may not further reproduce or redistribute these data sets. None of these data shall be electronically duplicated on magnetic or optical media for use by others, in whole or part, without permission of the appropriate custodial division of the Washington State Department of Natural Resources. Any hardcopies utilizing these data sets shall clearly indicate their source. If the licensee has modified the data in any way they are obligated to describe the types of modifications they have performed on the hardcopy map.
Point_of_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Amy Ramsey
Contact_Organization: Department of Natural Resources - Forest Health Program
Contact_Position: Forest Pathologist
Contact_Address:
Address_Type: mailing and physical address
Address: 1111 Washington St. SE. PO Box 47016
City: Olympia
State_or_Province: WA
Postal_Code: 98504-7016
Country: USA
Contact_Voice_Telephone: (360) 902-1309
Contact_Voice_Telephone: (360) 697-1830
Contact_TDD/TTY_Telephone: (360) 902-1600
Contact_Facsimile_Telephone: 360) 902-1783
Contact_Electronic_Mail_Address: amy.ramsey@dnr.wa.gov
Data_Set_Credit:
Karen Ripley and Amy Ramsey are the data stewards.

This aerial survey was conducted by Jeff Hubert, Amy Ramsey and Dan Omdal of the Washington Department of Natural Resources, Forest Health program. Carolyn Barkley of the Washington Department of Natural Resources provided contract advice. Thanks also to our pilot, Paul Etchemendy, as well as our federal cooperators Keith Sprengel, Ben Smith and Julie Johnson.

Native_Data_Set_Environment:
Microsoft Windows 2000 Version 5.2 (Build 3790) Service Pack 2; ESRI ArcCatalog 9.2.2.1350
Cross_Reference:
Citation_Information:
Originator: Forest Health Program
Publication_Date: 2008
Title: Tree Blowdown Aerial Survey 2008 Report
Geospatial_Data_Presentation_Form: document
Other_Citation_Details:
Tree Blowdown Aerial Survey Dates Flown: March 6-7, 2008 Washington Coast
Online_Linkage:
<http://www.dnr.wa.gov/Publications/rp_fh_2008_blowdownreport.pdf>
Cross_Reference:
Citation_Information:
Publication_Date: 2008
Title: Tree Blowdown Aerial Survey 2008 Maps
Geospatial_Data_Presentation_Form: document
Other_Citation_Details:
The maps from this survey are available for downloading and printing.
Online_Linkage:
<http://www.dnr.wa.gov/ResearchScience/Topics/ForestHealthEcology/Pages/>
Cross_Reference:
Citation_Information:
Originator: Forest Health program
Publication_Date: Unknown
Title: state-wide aerial survey
Geospatial_Data_Presentation_Form: raster digital data
Other_Citation_Details:
Maps from our annual state-wide aerial survey are available for downloading and printing.
Online_Linkage: <http://www.fs.fed.us/r6/nr/fid/as/quad07/index.shtml>

Data_Quality_Information:
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report: Unknown
Vertical_Positional_Accuracy:
Vertical_Positional_Accuracy_Report: Unknown
Lineage:
Source_Information:
Source_Citation:
Citation_Information:
Title: state-wide aerial survey
Source_Scale_Denominator: Unknown
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: March 2008
Source_Currentness_Reference: publication date
Source_Contribution: aerial survey
Process_Step:
Process_Description: Dataset copied.
Source_Used_Citation_Abbreviation: \\Snarf\am\rp\health\blowdown survey\AS Data\merged\area
Process_Step:
Process_Description: Metadata imported.
Source_Used_Citation_Abbreviation: C:\DOCUME~1\sdel490\LOCALS~1\Temp\6\xml14.tmp
Process_Step:
Process_Description: Metadata imported.
Source_Used_Citation_Abbreviation: C:\DOCUME~1\sdel490\LOCALS~1\Temp\9\xml10.tmp
Process_Step:
Process_Description: Metadata imported.
Source_Used_Citation_Abbreviation:
\\snarf\div_lm\users\sdel490\MetadataUpdate\Sent\BLOWDOWN08_SURVEY.xml

Spatial_Data_Organization_Information:
Direct_Spatial_Reference_Method: Vector
Point_and_Vector_Object_Information:
SDTS_Terms_Description:
SDTS_Point_and_Vector_Object_Type: G-polygon
Point_and_Vector_Object_Count: 812

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: 0.000000
Ordinate_Resolution: 0.000000
Planar_Distance_Units: survey feet
Geodetic_Model:
Horizontal_Datum_Name: North American Datum of 1983
Ellipsoid_Name: Geodetic Reference System 80
Semi-major_Axis: 6378137.000000
Denominator_of_Flattening_Ratio: 298.257222
Vertical_Coordinate_System_Definition:
Altitude_System_Definition:
Altitude_Resolution: 1.000000
Altitude_Encoding_Method:
Explicit elevation coordinate included with horizontal coordinates

Entity_and_Attribute_Information:
Detailed_Description:
Entity_Type:
Entity_Type_Label: BLOWDOWN08_SURVEY
Entity_Type_Definition:
2008 Blowdown Survey of the December 1-3, 2007 extratropical cyclone.
Attribute:
Attribute_Label: LABEL
Attribute_Definition: Label, Conifer or Hardwood
Attribute_Definition_Source: 08 Blowdown Survey
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: HWD
Enumerated_Domain_Value_Definition: Hardwood
Enumerated_Domain_Value_Definition_Source: 08 Blowdown Survey
Enumerated_Domain:
Enumerated_Domain_Value: CON
Enumerated_Domain_Value_Definition: Conifer
Enumerated_Domain_Value_Definition_Source: 08 Blowdown Survey
Attribute:
Attribute_Label: Shape
Attribute_Definition: Feature geometry.
Attribute_Definition_Source: ESRI
Attribute_Domain_Values:
Unrepresentable_Domain: Coordinates defining the features.
Attribute:
Attribute_Label: CODE
Attribute_Definition: CODE hardwood/conifer, and percentage down
Attribute_Definition_Source: 08 Blowdown Survey
Attribute:
Attribute_Label: LAT
Attribute_Definition: Latitude
Attribute_Definition_Source: 08 Blowdown Survey
Attribute:
Attribute_Label: LON
Attribute_Definition: Logitude
Attribute_Definition_Source: 08 Blowdown Survey
Attribute:
Attribute_Label: DATE_
Attribute_Definition: Date of survey
Attribute_Definition_Source: 08 Blowdown Survey
Attribute:
Attribute_Label: TIME_
Attribute_Definition: Time data was entered during survey
Attribute_Definition_Source: 08 Blowdown Survey
Attribute:
Attribute_Label: OBJECTID
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: SHAPE
Attribute_Definition: Feature geometry.
Attribute_Definition_Source: ESRI
Attribute_Domain_Values:
Unrepresentable_Domain: Coordinates defining the features.
Attribute:
Attribute_Label: SHAPE.AREA
Attribute:
Attribute_Label: ACRES
Attribute_Definition: Acres
Attribute_Definition_Source: 08 Blowdown Survey
Attribute:
Attribute_Label: SHAPE.LEN
Overview_Description:
Entity_and_Attribute_Overview:
On March 6 and 7, 2008, the tree blowdown aerial survey was flown in westernWashington. The aerial survey was flown at a speed of 90-120 mph and at a height of approximately 1,500 feet above ground level. Two observers (one on each side of the plane) looked out over a 1.5 mile swath of forestland and marked on a digital touch screen computer areas with wind thrown trees. Percentage of stand affected was assigned to each