Metadata: Identification_Information: Citation: Citation_Information: Originator: Helen Dow Publication_Date: 20240807 Title: Postfire erosion modeling results using the Water Erosion Prediction Project (WEPP) model for all large wildfires in California, 1984–2021 Geospatial_Data_Presentation_Form: shapefile 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 Online_Linkage: https://doi.org/10.5066/P9CG3DRR 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 is a shapefile containing polygons of watersheds that were burned in wildfires that occurred in California between 1984 and 2021. The Water Erosion Prediction Project (WEPP) model for postfire erosion was run on all watersheds for the first year following wildfire and the results of this modeling effort are included as attributes of each watershed polygon. Purpose: The information contained in this shapefile was used to produce estimates of annual postfire erosion across California. Watersheds were grouped by wildfire and by year for analysis. We then combined these WEPP results for each wildfire and fire year with estimates of the sediment mass contributed by postfire debris flows. 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. Although this Federal Geographic Data Committee-compliant metadata file is intended to document the dataset in nonproprietary form, as well as in Esri format, this metadata file may include some Esri-specific terminology. 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: -124.205014 East_Bounding_Coordinate: -115.178253 North_Bounding_Coordinate: 42.632207 South_Bounding_Coordinate: 32.554034 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:64bed061d34e70357a31c769 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 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); ArcGIS Desktop 10.8.1.14362 (64-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 Cross_Reference: Citation_Information: Originator: Roger Lew Originator: Marian Dobre Originator: Anurag Srivastava Originator: Erin S. Brooks Originator: William J. Elliot Originator: Peter R. Robichaud Originator: Dennis C. Flanagan Publication_Date: 2022 Title: WEPPcloud: An online watershed-scale hydrologic modeling tool. Part I. Model description Other_Citation_Details: Lew, R., Dobre, M., Srivastava, A., Brooks, E. S., Elliot, W. J., Robichaud, P. R., & Flanagan, D. C. (2022). WEPPcloud: An online watershed-scale hydrologic modeling tool. Part I. Model description. Journal of Hydrology, 127603. Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: There are numerous sources of uncertainty in the WEPP modeling such that a rigorous quantification of error was not feasible. For a detailed summary of all sources of uncertainty we refer the reader to publication associated with this data release. Logical_Consistency_Report: This dataset was checked for logical consistency such that it should not contain any duplicated watersheds or nested basins. Completeness_Report: This dataset was checked for completeness and no data or attributes were intentionally left blank. Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: This dataset was created using Monitoring Trends in Burn Severity (MTBS) perimeters and digital elevation models (DEMs) in WEPP, both of which have a horizontal resolution of 30 m. Vertical_Positional_Accuracy: Vertical_Positional_Accuracy_Report: 5 m 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 (shapefiles and rasters) were produced for fires between 1984 and 2021. Source_Citation_Abbreviation: MTBS data Source_Contribution: We used the burn perimeters from MTBS to define the fire-affected region and produce watersheds to run in WEPP. We used the dNBR6 (classified difference normalized burn ratio) maps as input to WEPP. Source_Information: Source_Citation: Citation_Information: Originator: Roger Lew Originator: SrivAnu Publication_Date: 2021 Title: wepppy-win-bootstrap Geospatial_Data_Presentation_Form: software Publication_Information: Publication_Place: online Publisher: zenodo Online_Linkage: https://doi.org/10.5281/zenodo.4902236 Type_of_Source_Media: Software Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 2021 Source_Currentness_Reference: We used the version of wepppy published in 2022 and documented in zenodo here: Source_Citation_Abbreviation: wepppy Source_Contribution: We used the wepppy Python module presented in this publication and documented in the above zenodo link to run the Water Erosion Prediction Project (WEPP) model on all watershed polygons contained in this dataset. Process_Step: Process_Description: We used the shapefile of fire perimeters from MTBS to define the fire-affected region and created a shapefile of watersheds to run in the Water Erosion Prediction Project model (WEPP). Source_Used_Citation_Abbreviation: MTBS data Process_Date: 2022 Source_Produced_Citation_Abbreviation: watersheds Process_Step: Process_Description: We used the Python module called wepppy to run WEPP on the watershed polygons contained in this shapefile using dNBR6 burn severity maps from MTBS. We then joined the results of the WEPP model to the shapefile of watershed characteristics like relief and drainage area. Source_Used_Citation_Abbreviation: watersheds Source_Used_Citation_Abbreviation: wepppy Process_Date: 2022 Process_Step: Process_Description: Minor edits were made to the metadata to correct the date formatting for a citation. No data were changed. (mau@usgs.gov) Process_Date: 20241009 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: 23486 Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Geodetic_Model: Horizontal_Datum_Name: D_WGS_1984 Ellipsoid_Name: WGS_1984 Semi-major_Axis: 6378137.0 Denominator_of_Flattening_Ratio: 298.257223563 Entity_and_Attribute_Information: Detailed_Description: Entity_Type: Entity_Type_Label: BurnedWatersheds_LargeFires1984to2021_WEPPresults.shp Entity_Type_Definition: Shapefile consisting of polygons of burned watersheds, results of the WEPP model, and watershed characteristics. Entity_Type_Definition_Source: Producer defined Attribute: Attribute_Label: fire_name Attribute_Definition: The name of the wildfire, derived from MTBS data ‘Incid_Name’ to include underscores for ease of export from WEPP. Attribute_Definition_Source: Producer defined Attribute_Domain_Values: Unrepresentable_Domain: A unique identification name assigned to each fire. Attribute: Attribute_Label: fire_year Attribute_Definition: The year the wildfire occurred in, derived from MTBS ‘Ig_Date’. Attribute_Definition_Source: producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 1985 Range_Domain_Maximum: 2021 Attribute_Units_of_Measure: years Attribute_Measurement_Resolution: 1 Attribute: Attribute_Label: utmzone Attribute_Definition: The utm zone in which the wildfire occurred. Attribute_Definition_Source: Producer defined Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: 10S Enumerated_Domain_Value_Definition: A 6-degree zone defined in the universal transverse Mercator projection. Enumerated_Domain_Value_Definition_Source: Producer defined Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: 11S Enumerated_Domain_Value_Definition: A 6-degree zone defined in the universal transverse Mercator projection. Enumerated_Domain_Value_Definition_Source: Producer defined Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: 10T Enumerated_Domain_Value_Definition: A 6-degree zone defined in the universal transverse Mercator projection. Enumerated_Domain_Value_Definition_Source: Producer defined Attribute: Attribute_Label: basin_id Attribute_Definition: Identification number for each watershed within each wildfire. Attribute_Definition_Source: producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 1 Range_Domain_Maximum: 2030 Attribute_Units_of_Measure: NA Attribute_Measurement_Resolution: 1 Attribute: Attribute_Label: relief Attribute_Definition: Maximum elevation within watershed minus minimum elevation. Attribute_Definition_Source: Producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 20 Range_Domain_Maximum: 2442 Attribute_Units_of_Measure: meters Attribute_Measurement_Resolution: 0.0001 Attribute: Attribute_Label: outlet_x Attribute_Definition: The x-coordinate of the watershed’s outlet in the local UTM zone(either 10 or 11N). Attribute_Definition_Source: Producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 208835.2842 Range_Domain_Maximum: 791188.2039 Attribute_Units_of_Measure: meters Attribute_Measurement_Resolution: 0.00001 Attribute: Attribute_Label: outlet_y Attribute_Definition: The y-coordinate of the watershed’s outlet in the local UTM zone (either 10 or 11N). Attribute_Definition_Source: Producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 3601311.03400 Range_Domain_Maximum: 4719704.31900 Attribute_Units_of_Measure: meters Attribute_Measurement_Resolution: 0.00001 Attribute: Attribute_Label: dr_area Attribute_Definition: Drainage area of each watershed. Attribute_Definition_Source: producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.100 Range_Domain_Maximum: 45.0 Attribute_Units_of_Measure: square kilometers Attribute_Measurement_Resolution: 0.001 Attribute: Attribute_Label: hill_sed Attribute_Definition: WEPP result for postfire sediment eroded from hillslopes. Exact model results are shown even though the accuracy is likely much lower than the output resolution. Attribute_Definition_Source: Producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0 Range_Domain_Maximum: 233959518.734 Attribute_Units_of_Measure: kilograms Attribute: Attribute_Label: fr_low Attribute_Definition: Fraction of the watershed burned at low severity. Attribute_Definition_Source: Producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0 Range_Domain_Maximum: 1 Attribute_Units_of_Measure: unitless Attribute: Attribute_Label: fr_mod Attribute_Definition: Fraction of the watershed burned at moderate severity. Attribute_Definition_Source: Producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0 Range_Domain_Maximum: 1 Attribute_Units_of_Measure: unitless Attribute: Attribute_Label: fr_high Attribute_Definition: Fraction of the watershed burned at high severity. Attribute_Definition_Source: Producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0 Range_Domain_Maximum: 1 Attribute_Units_of_Measure: unitless Attribute: Attribute_Label: precip_tot Attribute_Definition: Total annual precipitation Attribute_Definition_Source: Producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 45.5 Range_Domain_Maximum: 4108.8 Attribute_Units_of_Measure: millimeters Attribute: Attribute_Label: precip_dur Attribute_Definition: Total annual duration of precipitation. Attribute_Definition_Source: Producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 33.9 Range_Domain_Maximum: 2246.8 Attribute_Units_of_Measure: hours Attribute: Attribute_Label: tp_med Attribute_Definition: Annual median of CLIGEN-generated WEPP input parameter tp that defines the ratio of time to peak intensity to total storm duration. Attribute_Definition_Source: Producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.0 Range_Domain_Maximum: 0.1 Attribute_Units_of_Measure: unitless Attribute: Attribute_Label: ip_med Attribute_Definition: Annual median of CLIGEN-generated WEPP input parameter ip that defines the ratio of storm peak intensity to average intensity. Attribute_Definition_Source: Producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 1.0 Range_Domain_Maximum: 6.4 Attribute_Units_of_Measure: unitless Attribute: Attribute_Label: ub_hillsed Attribute_Definition: WEPP result for sediment eroded from hillslopes in the unburned scenario (no SBS map). Exact model results are shown even though the accuracy is likely much lower than the output resolution. Attribute_Definition_Source: Producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0 Range_Domain_Maximum: 94713194.2626 Attribute_Units_of_Measure: kilograms Overview_Description: Entity_and_Attribute_Overview: This dataset contains one shapefile with all the WEPP modeling results for all watersheds modeled in WEPP as part of the associated study on postfire erosion from large fires in California between 1984 and 2021. 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 shapefile format (BurnedWatersheds_LargeFires1984to2021_WEPPresults.shp and associated files) contained in a single zip file (BurnedWatersheds_LargeFires1984to2021_WEPPresults.zip) accompanied by 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: Shapefile Format_Version_Number: ArcGIS 10.8.1 Format_Specification: Esri polygon shapefile Format_Information_Content: Zip file contains the interpreted polygons shapefiles and the associated metadata. File_Decompression_Technique: Unzip Transfer_Size: 24.84 Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: https://www.sciencebase.gov/catalog/file/get/64bed061d34e70357a31c769 Network_Resource_Name: https://www.sciencebase.gov/catalog/item/64bed061d34e70357a31c769 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 geospatial software. Metadata_Reference_Information: Metadata_Date: 20241009 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