Identification_Information: Citation: Citation_Information: Originator: Coe, Jeffrey A. Originator: Michael, John A. Originator: Burgos, Marianella M. Publication_Date: 2011 Title: Map of debris flows caused by rainfall during 1996 in parts of the Reedsport and Deer Head Point quadrangles, southern Coast Range, Oregon Edition: Version 1.0 Geospatial_Data_Presentation_Form: map Series_Information: Series_Name: U.S. Geological Survey Open File Report Issue_Identification: 2011-1150 Publication_Information: Publication_Place: Denver, Colorado Publisher: U.S. Geological Survey Online_Linkage: http://pubs.usgs.gov/of/2011/1150/ Description: Abstract: This 1:12,000-scale map shows an inventory of debris flows caused by rainfall during 1996 in a 94.4 km2 area in the southern Coast Range of Oregon. This map and associated digital data are part of a larger U.S. Geological Survey study of debris flows in the southern Coast Range. Available evidence indicates that the flows were triggered by a rain storm that occurred between November 17 and 19. The closest rain gage in the Coast Range (Goodwin Peak) recorded 245 mm during the storm. Maximum rainfall intensity during the storm was 13.2 mm/hr on November 18. Debris flows were photogrammetrically mapped from 1:12,000-scale aerial photographs flown in May, 1997. The inventory is presented on imagery derived from LiDAR data acquired in 2008. We classified mapped debris flows into four categories based on the type of debris-flow activity: (1) discrete slide source areas, (2) predominantly erosion, (3) predominantly transport or mixed erosion and deposition, and (4) predominantly deposition. Locations of woody-debris jams are also shown on the map. The area encompassed by debris flows is 2.1 percent of the 94.4 km2 map area. This data set is the vector representation of the inventory of debris flows caused by rainfall in 1996 and is portrayed on map of the publication. Purpose: These data are part of a larger USGS study of the debris-flow in the southern Coast Range of Oregon. Supplemental_Information: The methods and background used to create these data are described fully within the text accompanying the map. It is strongly suggested that the user consult the text and be familiar with limitations in the methodology when using this data set. A raster data set, "1150lidarelev", representing the bare earth surface elevation for the extent of map, derived from the LiDAR imagery, is also available for download by the user. These data are shown as a hillshade representation with the debris-flow inventory polygons overlain in map. Two additional vector data sets that are shown on map are also available for download: 1) "1150MappingExtent" which represents the polygon defining the extent of mapping for map, and 2) "1150WoodyDebrisJam" which represents general point locations for the woody-debris jam locations shown on map. Data on map of this report are shown with base layers obtained from the Oregon Spatial Data Library. The data are available for download: http://spatialdata.oregonexplorer.info/GPT9/catalog/download/download.page Available layers include roads and hydrography. Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 2009 Currentness_Reference: publication date Status: Progress: Complete Maintenance_and_Update_Frequency: None planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -124.02 East_Bounding_Coordinate: -123.89 North_Bounding_Coordinate: 43.74 South_Bounding_Coordinate: 43.63 Keywords: Theme: Theme_Keyword_Thesaurus: American Geological Institute Glossary of Geology Theme_Keyword: debris-flow Theme_Keyword: debris-flow inventory Theme_Keyword: rainfall Place: Place_Keyword_Thesaurus: U.S. Board of Geographic Names (BGN) Geographic Names Information System (GNIS) Place_Keyword: Oregon Place_Keyword: Coast Range Access_Constraints: none Use_Constraints: None. Users of this geospatial database and geologic information derived there from should acknowledge the U.S. Geological Survey as the source of the data. Although software enables a user to display images at various scales, map data in this report should not be used at scales greater than 1:12,000 (for example, 1:6,000.) Point_of_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Jeffrey Coe Contact_Organization: U.S. Geological Survey Contact_Address: Address_Type: mailing address Address: Box 25046, Mail Stop 966 City: Denver State_or_Province: Colorado Postal_Code: 80225 Country: USA Contact_Voice_Telephone: 303-273-8606 Contact_Facsimile_Telephone: 303-273-8600 Contact_Electronic_Mail_Address: jcoe@usgs.gov Contact_Instructions: Best to contact via e-mail or telephone Browse_Graphic: Browse_Graphic_File_Name: http://pubs.usgs.gov/of/2011/1150/OF11-1150_map.pdf Browse_Graphic_File_Description: Graphic representation of map layout. Browse_Graphic_File_Type: PDF Native_Data_Set_Environment: Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 3; ESRI ArcCatalog 9.2.6.1500 Cross_Reference: Citation_Information: Originator: Oregon Lidar Consortium Publication_Date: 2007 Title: Lidar Collection and Mapping Geospatial_Data_Presentation_Form: raster digital data Online_linkage: http://www.oregongeology.org/sub/projects/olc/default.htm Data_Quality_Information: Logical_Consistency_Report: Polygon topology present. Completeness_Report: The data are complete for the study area. Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: See Process_Description below Lineage: Process_Step: Process_Description: Debris flows visible in 1:12,000-scale, color, stereo aerial photographs were mapped onto a topographic base map using a Kern PG-2 photogrammetric plotter. The topographic base map used on the PG-2 was created by plotting digital versions of the Deer Head Point and Reedsport USGS 7.5-minute quadrangles at 1:12,000 scale. During mapping, debris flows were subdivided into discrete slide source areas, areas dominated by erosion, those dominated by transport or mixed erosion and deposition, and areas dominated by deposition. Once mapped, debris flows were digitized from the 1:12,000-scale, quadrangle- based maps and then transferred to a LiDAR-derived, shaded-relief base map. The process of transferring mapped debris flows to the LiDAR map was difficult because the topographic details visible in the LiDAR were often not visible in, or were different from, the more generalized topography onto which the debris flows were initially mapped. When we transferred the debris flows, we attempted to retain their original shapes and sizes as much as possible. In general, travel distance lengths were not affected during the transfer process, and debris flow widths were minimally affected. However, in many instances, the debris-flow polygons, particularly in steep channel areas, had to be moved laterally by about 25 m (about 2 mm at 1:12,000-scale) to properly fit the LiDAR topography. Steep channels were the typical areas where this was a problem. A more detailed discussion is found in the accompanying text. Process_Date: 2008 Process_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Jeffrey Coe Contact_Organization: U.S. Geological Survey Contact_Address: Address_Type: mailing address Address: Box 25046, Mail Stop 966 City: Denver State_or_Province: Colorado Postal_Code: 80225 Country: USA Contact_Voice_Telephone: 303-273-8606 Contact_Facsimile_Telephone: 303-273-8600 Contact_Electronic_Mail_Address: jcoe@usgs.gov Contact_Instructions: Best to contact via e-mail or telephone 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: 609 Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Planar: Grid_Coordinate_System: Grid_Coordinate_System_Name: Universal Transverse Mercator Universal_Transverse_Mercator: UTM_Zone_Number: 10 Transverse_Mercator: Scale_Factor_at_Central_Meridian: 0.999600 Longitude_of_Central_Meridian: -123.000000 Latitude_of_Projection_Origin: 0.000000 False_Easting: 500000.0 False_Northing: 0.000000 Planar_Coordinate_Information: Planar_Coordinate_Encoding_Method: coordinate pair Coordinate_Representation: Abscissa_Resolution: 0.000001 Ordinate_Resolution: 0.000001 Planar_Distance_Units: meters 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 Entity_and_Attribute_Information: Overview_Description: Entity_and_Attribute_Overview: >"highway38debrisflow" is an ESRI vector shapefile with >attribute items in standard, shapefile feature class format. >An additional item was added to the data: > >item description >==== =========== >type A character string value that defines the type of > polygon represented. > ‘type’=l represents a discrete slide. > ‘type’=e represents predominantly erosion. > ‘type’=t represents predominantly transport or > mixed erosion. > ‘type’=d represents predominantly deposition. Entity_and_Attribute_Detail_Citation: none Distribution_Information: Distributor: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey, Information Services Contact_Address: Address_Type: mailing address Address: Box 25286, Mail Stop 306 City: Denver State_or_Province: Colorado Postal_Code: 80225 Country: USA Contact_Voice_Telephone: 1-888-ASK-USGS Contact_Facsimile_Telephone: 303-202-4693 Resource_Description: U.S. Geological Survey Open-File Report 2011-1150 Distribution_Liability: This database, identified as Open-File Report 2011-1150, has been approved for release and publication by the Director of the USGS. Although this database has been subjected to rigourous review and is substantially complete, the USGS reserves the right to revise the data pursuant to further analysis and review. Furthermore, it is released on condition that neither the USGS nor the United States Government may be held liable for any damages resulting from its authorized or unauthorized use. Standard_Order_Process: Digital_Form: Digital_Transfer_Information: Format_Name: SHP File_Decompression_Technique: Use WinZip (http://www.winzip.com/) or other programs to decompress the file. Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: http://pubs.usgs.gov/of/2011/1150/ Fees: none Metadata_Reference_Information: Metadata_Date: 20110621 Metadata_Review_Date: 2011 Metadata_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Person: John Michael Contact_Address: Address_Type: mailing address Address: Box 25046, Mail Stop 966 City: Denver State_or_Province: Colorado Postal_Code: 80225 Country: USA Contact_Voice_Telephone: 303-273-8562 Contact_Facsimile_Telephone: 303-273-8600 Contact_Electronic_Mail_Address: jmichael@usgs.gov Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata Metadata_Standard_Version: FGDC-STD-001-1998 Metadata_Access_Constraints: none Metadata_Use_Constraints: none