Metadata: Identification_Information: Citation: Citation_Information: Originator: Helen W. Dow Originator: Jaime Kostelnik Originator: Jason W. Kean Originator: Donald N. Lindsay Publication_Date: 20240807 Title: Postfire debris-flow volumes and their associated observation, location, and volume sources Geospatial_Data_Presentation_Form: comma-delimited text Series_Information: Series_Name: data release Issue_Identification: DOI:10.5066/P9CG3DRR Publication_Information: Publication_Place: Pacific Coastal and Marine Science Center, Santa Cruz, California Publisher: U.S. Geological Survey Larger_Work_Citation: Citation_Information: Originator: Helen W. Dow Originator: Jaime Kostelnik Originator: Jason W. Kean Originator: Donald N. Lindsay Publication_Date: 2024 Title: Postfire erosion estimates for large California wildfires that occurred between 1984 and 2021 Series_Information: Series_Name: data release Issue_Identification: DOI:10.5066/P9CG3DRR Publication_Information: Publication_Place: Pacific Coastal and Marine Science Center, Santa Cruz, CA Publisher: U.S. Geological Survey Other_Citation_Details: Suggested Citation: Dow, H.W., Kostelnik, J., Kean, J.W., and Lindsay, D.N., 2024, Postfire erosion estimates for large California wildfires that occurred between 1984 and 2021: U.S. Geological Survey data release, https://doi.org/10.5066/P9CG3DRR. Online_Linkage: https://doi.org/10.5066/P9CG3DRR Description: Abstract: This table contains measured and modeled postfire debris flow volumes alongside the associated sources for debris flow documentation, locations, and volumes. We conducted a search of scientific literature and news media reports to find documentation of debris flows that may have followed all wildfires greater than 100 square kilometers that occurred between 1984 and 2021 in California. The wildfires listed are all the fires we found that had documented postfire debris flows. Some fires had field-measurements of debris flow volume. Where field-measurements of volume did not exist, we used model data on postfire debris-flow likelihood and volume from U.S. Geological Survey Emergency Assessment of Post-Fire Debris-Flow Hazards Team (see Lineage section in this metadata). In some cases, exact locations (but not volumes) were known, in which case we used modeled volumes for these locations. Where debris flows were documented but not exact locations, we used the volumes from all basins with a probability greater than eighty percent of having postfire debris flows. Purpose: We used these data to create a statewide annual postfire sediment budget. Supplemental_Information: Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government. Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 1984 Ending_Date: 2021 Currentness_Reference: Wildfires that occurred during this time period were part of our study. Status: Progress: Complete Maintenance_and_Update_Frequency: None planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -120.867019 East_Bounding_Coordinate: -116.164279 North_Bounding_Coordinate: 38.385179 South_Bounding_Coordinate: 32.873746 Keywords: Theme: Theme_Keyword_Thesaurus: ISO 19115 Topic Category Theme_Keyword: geoscientificInformation Theme: Theme_Keyword_Thesaurus: Data Categories for Marine Planning Theme_Keyword: Physical Habitats and Geomorphology Theme: Theme_Keyword_Thesaurus: USGS Thesaurus Theme_Keyword: erosion Theme_Keyword: fires Theme_Keyword: geospatial datasets Theme: Theme_Keyword_Thesaurus: Marine Realms Information Bank (MRIB) keywords Theme_Keyword: sediment erosion Theme: Theme_Keyword_Thesaurus: None Theme_Keyword: U.S. Geological Survey Theme_Keyword: USGS Theme_Keyword: Coastal and Marine Hazards and Resources Program Theme_Keyword: CMHRP Theme_Keyword: Pacific Coastal and Marine Science Center Theme_Keyword: PCMSC Theme: Theme_Keyword_Thesaurus: USGS Metadata Identifier Theme_Keyword: USGS:64bef5f7d34e70357a31c9f3 Place: Place_Keyword_Thesaurus: Geographic Names Information System (GNIS) Place_Keyword: State of California Access_Constraints: No access constraints Use_Constraints: USGS-authored or produced data and information are in the public domain from the U.S. Government and are freely redistributable with proper metadata and source attribution. Please recognize and acknowledge the U.S. Geological Survey and the California Geological Survey as the originator(s) of the dataset and in products derived from these data. Point_of_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey, Pacific Coastal and Marine Science Center Contact_Person: PCMSC Science Data Coordinator Contact_Address: Address_Type: mailing and physical Address: 2885 Mission Street City: Santa Cruz State_or_Province: CA Postal_Code: 95060 Contact_Voice_Telephone: 831-427-4747 Contact_Electronic_Mail_Address: pcmsc_data@usgs.gov Native_Data_Set_Environment: Environment as of Metadata Creation: Microsoft Windows 10 Enterprise Version 6.2 (Build 19045.2965); Microsoft Excel for Microsoft 365 MSO (Version 2208 Build 16.0.15601.20660) 32-bit Cross_Reference: Citation_Information: Originator: Helen W. Dow Originator: Amy E. East Originator: Joel B. Sankey Originator: Jonathan A. Warrick Originator: Jaime Kostelnik Originator: Donald N. Lindsay Originator: Jason W. Kean Publication_Date: 2024 Title: Postfire sediment mobilization and its downstream implications across California, 1984-2021 Other_Citation_Details: Dow, H.W., East, A., Sankey, J.B., Warrick, J., Kostelnik, J., Lindsay, D.N., and Kean, J.W., 2024, Postfire sediment mobilization and its downstream implications across California, 1984 - 2021: Journal of Geophysical Research Earth Surface, https://doi.org/10.1029/2024JF007725. Online_Linkage: http://doi.org/10.1029/2024JF007725 Cross_Reference: Citation_Information: Originator: Jeff Eidenshink Originator: Brian Schwind Originator: Ken Brewer Originator: Zhi-Liang Zhu Originator: Brad Quayle Originator: Stephen Howard Publication_Date: 2007 Title: A Project for Monitoring Trends in Burn Severity Other_Citation_Details: Eidenshink, J., Schwind, B., Brewer, K., Zhu, Z.-L., Quayle, B., & Howard, S. (2007). A Project for Monitoring Trends in Burn Severity. Fire Ecology, 3(1), 3–21. https://doi.org/10.4996/fireecology.0301003 Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: All measured and modeled volumes have a high degree of associated uncertainty. Measured volumes have higher accuracy as all were made in the field. Modeled volumes have uncertainty relating to the rainfall intensity-duration used for the model design storm, the location of the debris flows (even if some locations were documented, there may have been debris flows that were not documented), and the volumes. Logical_Consistency_Report: The data were checked for logical consistency. Completeness_Report: No data were intentionally omitted from the dataset. Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: A formal accuracy assessment of the horizontal positional information in the dataset is not applicable. Lineage: Source_Information: Source_Citation: Citation_Information: Originator: Monitoring Trends in Burn Severity (MTBS) Agency Publication_Date: 2007 Title: MTBS Geospatial Datasets Publication_Information: Publication_Place: online Publisher: Monitoring Trends in Burn Severity (MTBS) Online_Linkage: https://www.mtbs.gov/ Type_of_Source_Media: Digital Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 1984 Ending_Date: 2021 Source_Currentness_Reference: The digital data were produced for fires between 1984 and 2021. Source_Citation_Abbreviation: MTBS perims Source_Contribution: We used the burn perimeters from MTBS to define the fire-affected region and produce the watersheds run in WEPP. Source_Information: Source_Citation: Citation_Information: Originator: Jaime Kostelnik Originator: Helen W. Dow Publication_Date: 2024 Title: Model estimates of the probability and volume of debris flows that may be produced by a storm following recent wildfire; re-release of ten wildfires across California, 1997—2015 Geospatial_Data_Presentation_Form: shapefile Publication_Information: Publication_Place: online Publisher: U.S. Geological Survey Online_Linkage: DOI:10.5066/P9CG3DRR Online_Linkage: https://www.sciencebase.gov/catalog/item/64beec73d34e70357a31c9e5 Type_of_Source_Media: Digital Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 1997 Ending_Date: 2015 Source_Currentness_Reference: publication date Source_Citation_Abbreviation: DFshps_release Source_Contribution: Modeled debris flow volumes for older fires from this same data release; Source_Information: Source_Citation: Citation_Information: Originator: Jaime Kostelnik Originator: Jason W. Kean Publication_Date: 2023 Title: USGS Post Wildfire Debris Flow Hazard Assessment Viewer. Geospatial_Data_Presentation_Form: shapefile Publication_Information: Publication_Place: online Publisher: U.S. Geological Survey Online_Linkage: https://usgs.maps.arcgis.com/apps/dashboards/c09fa874362e48a9afe79432f2efe6fe%20 Type_of_Source_Media: Digital Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 2023 Source_Currentness_Reference: Debris flow model estimates from wildfires in the timeframe 2016—2021 Source_Citation_Abbreviation: DFshps_new Source_Contribution: Modeled debris flow volumes for fires after 2015 Process_Step: Process_Description: We used these data to find wildfires larger than one hundred square kilometers and all the data associated with them including their official MTBS names, ignition date, and perimeters. Source_Used_Citation_Abbreviation: MTBS perims Process_Date: 2022 Process_Step: Process_Description: Sources noted in the ‘DocumentationSource’ attribute were used to identify wildfires that triggered postfire debris flows in the first water year postfire. See the accompanying ‘PostfireDebrisFlow_DataEstimatesSources_metadata_references.pdf’in the Attached Files section for full list of sources. Process_Date: 2023 Process_Step: Process_Description: Sources noted in the ‘LocationSource’ attribute were used to identify what watersheds within each wildfire experienced postfire debris flows in the first water year postfire. See the accompanying ‘PostfireDebrisFlow_DataEstimatesSources_metadata_references.pdf’in the Attached Files section for full list of sources. Process_Date: 2023 Process_Step: Process_Description: Sources noted in the ‘VolumeSource’ attribute were used to find the volume of postfire debris flows noted above. See the accompanying ‘PostfireDebrisFlow_DataEstimatesSources_metadata_references.pdf’ in the Attached Files section for full list of sources. Process_Date: 2023 Process_Step: Process_Description: For all basins with ‘LocationSource’ listed as ‘All basins with P greater than 80 percent’, we used data from the following shapefiles to identify these basins and source modeled debris-flow volumes. Source_Used_Citation_Abbreviation: DFshps_release Source_Used_Citation_Abbreviation: DFshps_new Process_Date: 2023 Entity_and_Attribute_Information: Detailed_Description: Entity_Type: Entity_Type_Label: PostfireDebrisFlow_DataEstimatesSources.csv Entity_Type_Definition: spreadsheet of postfire debris flow data and their sources. Entity_Type_Definition_Source: Producer defined Attribute: Attribute_Label: FireYear Attribute_Definition: Year the wildfire occurred modified from MTBS perims ‘Ig_Date’. Attribute_Definition_Source: producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 1997 Range_Domain_Maximum: 2021 Attribute_Units_of_Measure: Year Attribute_Measurement_Resolution: 1 Attribute: Attribute_Label: FireName Attribute_Definition: Name of the wildfire, modified from MTBS perims ‘Incid_Name’ Attribute_Definition_Source: producer defined Attribute_Domain_Values: Unrepresentable_Domain: modified from MTBS perims ‘Incid_Name’ Attribute: Attribute_Label: MeasuredVol Attribute_Definition: Sum of field-based measurement of postfire debris flow volumes across each wildfire. This column shows “N/A” for fires in which volumes were only modeled. Attribute_Definition_Source: Producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 823 Range_Domain_Maximum: 3743000 Attribute_Units_of_Measure: cubic meters Attribute_Measurement_Resolution: 0.1 Attribute: Attribute_Label: ModeledVol Attribute_Definition: Sum of model-based estimates of postfire debris flow volumes across each wildfire. This column shows “N/A” for fires in which volumes were only measured. Attribute_Definition_Source: Producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 823 Range_Domain_Maximum: 3743000 Attribute_Units_of_Measure: cubic meters Attribute_Measurement_Resolution: 0.1 Attribute: Attribute_Label: I15Model Attribute_Definition: The 15-minute rainfall intensity used in the postfire debris flow likelihood and volume models. If ‘DocumentationSource’ is ‘this report’ then rainfall was measured in the field. If 24 was used, then it is likely no rainfall was measured in the field. Other values are taken from publications listed in sources.This column shows “N/A” for fires in which volumes were only measured. This column lists “-999” for values in which multiple values were used for different watersheds within the fire perimeter; the individual values can be found within the associated VolumeSource field. Attribute_Definition_Source: Producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 24 Range_Domain_Maximum: 40 Attribute_Units_of_Measure: inches Attribute_Measurement_Resolution: 1 Attribute: Attribute_Label: TotalMass Attribute_Definition: Sum of measured and modeled volumes converted to mass using a density of 1700 kilograms per cubic meter. Attribute_Definition_Source: Producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 1399 Range_Domain_Maximum: 6363000 Attribute_Units_of_Measure: kilograms Attribute_Measurement_Resolution: 1 Attribute: Attribute_Label: DocumentationSource Attribute_Definition: The sources documenting that debris flows occurred in the area affected by this wildfire in the first water year following fire. Attribute_Definition_Source: Producer defined Attribute_Domain_Values: Unrepresentable_Domain: Various sources described in each row; see ‘PostfireDebrisFlow_DataEstimatesSources_metadata_references.pdf’in the Attached Files section for full citations. Attribute: Attribute_Label: LocationSource Attribute_Definition: The sources for the locations where debris flows occurred in the area affected by this wildfire in the first water year following fire. Attribute_Definition_Source: Producer defined Attribute_Domain_Values: Unrepresentable_Domain: Various sources described in each row; see ‘PostfireDebrisFlow_DataEstimatesSources_metadata_references.pdf’ in the Attached Files section for full citations. Attribute: Attribute_Label: VolumeSource Attribute_Definition: The sources for the volumes of postfire debris flows included in this table. Attribute_Definition_Source: Producer defined Attribute_Domain_Values: Unrepresentable_Domain: Various sources described in each row; see ‘PostfireDebrisFlow_DataEstimatesSources_metadata_references.pdf’ in the Attached Files section for full citations. Overview_Description: Entity_and_Attribute_Overview: The first line of the csv file is a header line. Entity_and_Attribute_Detail_Citation: U.S. Geological Survey Distribution_Information: Distributor: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey - ScienceBase Contact_Address: Address_Type: mailing and physical Address: Denver Federal Center, Building 810, Mail Stop 302 City: Denver State_or_Province: CO Postal_Code: 80225 Contact_Voice_Telephone: 1-888-275-8747 Contact_Electronic_Mail_Address: sciencebase@usgs.gov Resource_Description: These data are available in csv format (PostfireDebrisFlow_DataEstimatesSources.csv) and are accompanied by a pdf of references cited (PostfireDebrisFlow_DataEstimatesSources_metadata_references.pdf) and CSDGM FGDC-compliant metadata. Distribution_Liability: Unless otherwise stated, all data, metadata and related materials are considered to satisfy the quality standards relative to the purpose for which the data were collected. Although these data and associated metadata have been reviewed for accuracy and completeness and approved for release by the U.S. Geological Survey (USGS), no warranty expressed or implied is made regarding the display or utility of the data on any other system or for general or scientific purposes, nor shall the act of distribution constitute any such warranty. Standard_Order_Process: Digital_Form: Digital_Transfer_Information: Format_Name: comma-delimited text Format_Version_Number: Microsoft Excel for Microsoft 365 MSO (Version 2208 Build 16.0.15601.20660) 32-bit Format_Information_Content: These data are available as a csv table and are accompanied by the associated metadata and pdf of citations. File_Decompression_Technique: No compression applied Transfer_Size: 0.11255 Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: https://www.sciencebase.gov/catalog/item/64bef5f7d34e70357a31c9f3 Network_Resource_Name: https://www.sciencebase.gov/catalog/file/get/64bef5f7d34e70357a31c9f3 Network_Resource_Name: https://doi.org/10.5066/P9CG3DRR Access_Instructions: Data can be downloaded using the Network_Resource_Name links. The first link is a direct link to download the zipped file of data and metadata. The second link points to a landing page with metadata and data. The third link points to the landing page for the entire data release. Fees: None. Technical_Prerequisites: These data can be viewed with any software capable of viewing text files. Metadata_Reference_Information: Metadata_Date: 20240807 Metadata_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey, Pacific Coastal and Marine Science Center Contact_Person: PCMSC Science Data Coordinator Contact_Address: Address_Type: mailing and physical Address: 2885 Mission Street City: Santa Cruz State_or_Province: CA Postal_Code: 95060 Contact_Voice_Telephone: 831-427-4747 Contact_Electronic_Mail_Address: pcmsc_data@usgs.gov Metadata_Standard_Name: Content Standard for Digital Geospatial Metadata Metadata_Standard_Version: FGDC-STD-001-1998