20260316 15504600 1.0 FALSE DEVA_Flood_Recovery_Damage_Assessment_Points 002 -13133811.539500 -12954799.387300 4249424.656400 4484698.934000 1 Geographic GCS_North_American_1983 Angular Unit: Degree (0.017453) <GeographicCoordinateSystem xsi:type='typens:GeographicCoordinateSystem' xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance' xmlns:xs='http://www.w3.org/2001/XMLSchema' xmlns:typens='http://www.esri.com/schemas/ArcGIS/3.5.0'><WKT>GEOGCS[&quot;GCS_North_American_1983&quot;,DATUM[&quot;D_North_American_1983&quot;,SPHEROID[&quot;GRS_1980&quot;,6378137.0,298.257222101]],PRIMEM[&quot;Greenwich&quot;,0.0],UNIT[&quot;Degree&quot;,0.0174532925199433],AUTHORITY[&quot;EPSG&quot;,4269]]</WKT><XOrigin>-400</XOrigin><YOrigin>-400</YOrigin><XYScale>999999999.99999988</XYScale><ZOrigin>-100000</ZOrigin><ZScale>10000</ZScale><MOrigin>-100000</MOrigin><MScale>10000</MScale><XYTolerance>8.983152841195215e-09</XYTolerance><ZTolerance>0.001</ZTolerance><MTolerance>0.001</MTolerance><HighPrecision>true</HighPrecision><LeftLongitude>-180</LeftLongitude><WKID>4269</WKID><LatestWKID>4269</LatestWKID></GeographicCoordinateSystem> 20260316 14280100 20260316 14280100 Jamie Weleber Death Valley National Park NEPA & GIS Specialist (760) 786-3200 P.O. Box 579 Death Valley CA 92328 US 20260224 ArcGIS Metadata 1.0 Jamie Weleber Death Valley National Park NEPA & GIS Specialist (760) 786-3200 P.O. Box 579 Death Valley CA 92328 US None File Geodatabase Feature Class https://irma.nps.gov/DataStore/ https://irma.nps.gov/DataStore/ File Geodatabase Feature Class Death Valley National Park SCA Road Damage Assessment Points 2024 Student Conservation Association (SCA) Death Valley National Park National Park Service vector digital data This point feature class contains road damage assessment data collected by the Student Conservation Association (SCA) Flood Recovery Team during 2024 field operations in Death Valley National Park. The dataset documents point-based road damage features along unpaved roads throughout the park, collected in response to flood events that caused widespread damage to the park's backcountry road network. Point damage types include: Cattle Guard Damaged Driving Surface, Cattle Guard Damaged Gates, Cattle Guard Damaged Wings, Cattle Guard Silted In, Culvert Buried Pipe, Culvert Crushed Pipe, Culvert Full of Debris, Culvert Pipe Exposed, Culvert Pipe Blocked By Vegetation, Graffiti Carving, Graffiti Dirt Drawing, Graffiti Paint, Obstacle Eroded Ledge, Obstacle Hole, Obstacle Rock, Obstacle Other, Pothole Single, Pothole Multiple, Signage Damaged, Signage Missing, and Vegetation Tree Removal. Each record includes the damage type, severity rating (Low, Medium, or High where applicable), depth or height measurements in inches, recommended corrective actions, road name, milepost references, and FMSS asset identifiers. Pothole severity thresholds vary by road classification (2WD Low Clearance, 2WD High Clearance, 4WD High Clearance, and 4WD Rough Road) and consider both width and depth dimensions as defined in the Objective Damage Thresholds document (Version 1.0, January 8, 2024). Point features represent damage less than 2 meters in length along the road centerline; damage 2 meters or longer was collected as lines in a companion dataset (DEVA_GIS_SCA_Road_Damage_Lines). Data was collected using Esri Field Maps paired with Trimble Catalyst DA2 GNSS receivers operating on a Catalyst Premium subscription with real-time RTX (Real-Time Extended) satellite corrections, providing 60cm horizontal accuracy specification. An accuracy threshold of 6 feet (1.83 meters) was enforced; points exceeding this threshold were not accepted. Attachments are enabled on this feature class to store field photographs documenting damage conditions. This dataset supports flood recovery planning, road maintenance prioritization, equipment needs assessment, and cost estimation for the repair of unpaved roads within Death Valley National Park following major flood events. It provides spatially referenced point damage assessments with recommended corrective actions to guide National Park Service maintenance operations, NEPA compliance screening for repair projects, and long-term road management planning. Point features complement the companion line damage dataset to provide a comprehensive inventory of road infrastructure conditions across the park's backcountry road network. Student Conservation Association (SCA) Flood Recovery Team; National Park Service, Death Valley National Park GIS Program; Emma Rosenau (SCA Project Lead); Ben Dunphey (NPS GIS Compliance Manager); Jamie Weleber (SCA Sr. Program Manager, GIS Technologies) Jamie Weleber Death Valley National Park NEPA & GIS Specialist (760) 786-3200 P.O. Box 579 Death Valley CA 92328 US Death Valley National Park DEVA California Nevada Inyo County Nye County Mojave Desert Great Basin road damage flood recovery damage assessment road maintenance pothole culvert cattle guard signage graffiti obstacle tree removal corrective action severity rating unpaved roads backcountry roads Student Conservation Association SCA field data collection transportation structure environment ISO 19115 Topic Categories road damage flood recovery damage assessment road maintenance pothole culvert cattle guard signage graffiti obstacle tree removal corrective action severity rating unpaved roads backcountry roads Student Conservation Association SCA field data collection transportation structure environment Death Valley National Park DEVA California Nevada Inyo County Nye County Mojave Desert Great Basin The National Park Service shall not be held liable for improper or incorrect use of the data described and/or contained herein. These data and related graphics (i.e. GIF or JPG format files) are not legal documents and are not intended to be used as such. The information contained in these data is dynamic and may change over time. The data are not better than the original sources from which they were derived. It is the responsibility of the data user to use the data appropriately and consistent within the limitations of geospatial data in general and these data in particular. The related graphics are intended to aid the data user in acquiring relevant data; it is not appropriate to use the related graphics as data. The National Park Service gives no warranty, expressed or implied, as to the accuracy, reliability, or completeness of these data. It is strongly recommended that these data are directly acquired from an NPS server and not indirectly through other sources which may have changed the data in some way. Although these data have been processed successfully on computer systems at the National Park Service, no warranty expressed or implied is made regarding the utility of the data on other systems for general or scientific purposes, nor shall the act of distribution constitute any such warranty. This disclaimer applies both to individual use of the data and aggregate use with other data. The National Park Service shall not be held liable for improper or incorrect use of the data described and/or contained herein. These data and related graphics (i.e. GIF or JPG format files) are not legal documents and are not intended to be used as such. The information contained in these data is dynamic and may change over time. The data are not better than the original sources from which they were derived. It is the responsibility of the data user to use the data appropriately and consistent within the limitations of geospatial data in general and these data in particular. The related graphics are intended to aid the data user in acquiring relevant data; it is not appropriate to use the related graphics as data. The National Park Service gives no warranty, expressed or implied, as to the accuracy, reliability, or completeness of these data. It is strongly recommended that these data are directly acquired from an NPS server and not indirectly through other sources which may have changed the data in some way. Although these data have been processed successfully on computer systems at the National Park Service, no warranty expressed or implied is made regarding the utility of the data on other systems for general or scientific purposes, nor shall the act of distribution constitute any such warranty. This disclaimer applies both to individual use of the data and aggregate use with other data. None. Data is available to authorized NPS personnel and partners through the NPS enterprise GIS Portal. true -117.97 -116.36 37.28 35.65 ground condition 2024 2024 This dataset was collected as part of a cooperative agreement between the Student Conservation Association (SCA) and the National Park Service (NPS) for the Death Valley Flood Recovery Team, 2024. Data collection followed the DEVA Field Data Collection Manual (Version 2, 2024) and the Objective Damage Thresholds document (Version 1.0, January 8, 2024, written and compiled by Emma Rosenau). The damage thresholds were approved by Jamie Weleber (SCA Sr. Program Manager, GIS Technologies), Emma Rosenau (SCA Project Lead, DEVA Flood Recovery Team), and Ben Dunphey (NPS GIS Compliance Manager). Spatial data was collected using Esri Field Maps on smartphones and tablets paired with Trimble Catalyst DA2 GNSS receivers. The receivers operated on a Trimble Catalyst Premium subscription level providing a 60cm horizontal accuracy specification, using real-time RTX (Real-Time Extended) satellite corrections. An accuracy threshold of 6 feet (1.83 meters) was configured in Field Maps; points exceeding this threshold were not accepted during data collection. Positions were collected in WGS84 with real-time transformation to NAD83. For features within the roadway, the satellite receiver remained in or on the vehicle to collect the point position. For features outside the roadway, the receiver was placed as close as possible to (preferably on top of) the feature being collected. The receiver was kept still during the automatic 5-second averaging period. Features less than 2 meters along the road centerline were collected as points in this dataset. Features 2 meters or longer were collected as lines in the companion dataset (DEVA_GIS_SCA_Road_Damage_Lines). The original data was collected in Web Mercator Auxiliary Sphere (EPSG: 3857). An associated attachment table stores field photographs linked to individual damage records. Esri ArcGIS 13.5.2.57366 1 -117.983036 -116.374943 37.326386 35.627050 Point features have been validated for spatial accuracy and attribute completeness. Each point represents a discrete damage feature less than 2 meters in length along the road centerline, or a feature that is inherently point-based (e.g., a single pothole, culvert damage at one end, a damaged sign). All culverts — damaged or undamaged — were collected as a pair of Culvert inventory points (inlet and outlet) in a companion inventory dataset; if damaged, additional damage assessment point(s) were collected in this dataset. If a culvert had multiple damage types, a separate point was collected for each damage type. This dataset covers all non-paved roads within Death Valley National Park surveyed by the SCA Flood Recovery Team during 2024, with the exception of roads explicitly excepted by the NPS (e.g., Aluminum Claims Road segment accessible only from Fort Irwin). Roads were surveyed in their entirety where accessible. Point damage records were collected using objective thresholds that vary by road classification (2WD, 2WD High Clearance, 4WD High Clearance, 4WD Rough Road) as documented in the Objective Damage Thresholds (Version 1.0). Graffiti was collected within 50 feet of road centerlines, and extremely obvious or intrusive graffiti visible from the road within 0.1 miles. Signs were collected within 50 feet of the centerline of unpaved roads. Spatial data was collected using Trimble Catalyst DA2 GNSS receivers operating on a Trimble Catalyst Premium subscription, which provides a 60cm horizontal accuracy specification using real-time RTX (Real-Time Extended) satellite corrections. An accuracy threshold of 6 feet (1.83 meters) was configured in Esri Field Maps; points exceeding this threshold were automatically rejected and not recorded. Positions were collected in WGS84 with real-time transformation to NAD83. For features within the roadway, the receiver remained in or on the vehicle. For features outside the roadway, the receiver was placed as close as possible to (preferably on top of) the feature. The receiver was kept still during the automatic 5-second averaging period. Actual positional accuracy may vary based on field conditions including satellite constellation geometry, atmospheric conditions, terrain obstructions (e.g., narrow canyons), and multipath interference. Step 1 - Field Data Collection: SCA Flood Recovery Team crews drove the full length of each unpaved road, then collected damage assessment data on the return trip. Point features were collected using Esri Field Maps on smartphones and tablets paired with Trimble Catalyst DA2 GNSS receivers operating on a Catalyst Premium subscription (60cm horizontal accuracy specification) with real-time RTX satellite corrections. An accuracy threshold of 6 feet (1.83 meters) was enforced; points exceeding this were not accepted. Positions were collected in WGS84 with real-time transformation to NAD83. For features within the roadway, the receiver remained in or on the vehicle. For features outside the roadway (e.g., graffiti, signs), the receiver was placed on or as close as possible to the feature. The receiver was held still during the automatic 5-second averaging period. Each point record was attributed with: road name (from the authoritative DEVA Roads feature class), damage type, severity (Low/Medium/High where applicable based on road classification-specific thresholds), depth or height measurement in inches, side of road, recommended corrective action(s), milepost, FMSS road name, and LocationID. Field photographs were attached to records documenting significant damage, with photographs especially encouraged for graffiti, structural damage (fences, culverts, cattle guards), and impassable obstacles. 2024 Emma Rosenau Student Conservation Association Project Lead, DEVA Flood Recovery Team Step 2 - QA/QC and Post-Processing: Field-collected data was reviewed for completeness, attribute consistency, and spatial accuracy. Records flagged for deletion via the DeleteFeature field or identified through Editing Points in the companion generic point layer were evaluated and corrected or removed as appropriate. Data was synced from Field Maps to ArcGIS Online and subsequently downloaded to the park's enterprise File Geodatabase for archival and further analysis. 2024 Jamie Weleber Death Valley National Park NEPA & GIS Specialist Step 3 - Data Archival and Publishing: Data was migrated from the SCA field collection hosted feature service to the Death Valley National Park enterprise File Geodatabase. The feature class was published to the NPS Portal and Hub site with FGDC-compliant metadata and HTML description for discovery and access by park staff and partners. The associated attachment table containing field photographs was preserved with the feature class. 2026-02-24 Jamie Weleber Death Valley National Park NEPA & GIS Specialist 0 DEVA_GIS_SCA_Road_Damage_Assessment_Points Point feature class representing discrete road damage assessments collected by the SCA Flood Recovery Team along unpaved roads in Death Valley National Park during 2024. Point features represent damage less than 2 meters in length or inherently point-based features such as individual potholes, culvert damage, cattle guard damage, signs, graffiti, obstacles, and tree removal needs. Student Conservation Association / National Park Service Feature Class 0 OBJECTID Internal feature number. System-generated unique identifier for each feature. Esri Sequential unique whole numbers automatically generated by the geodatabase. OBJECTID OID 4 0 0 Shape Feature geometry. Defines the spatial location of the damage point. Esri Point geometry coordinates. Shape Geometry 0 0 0 RoadName Name of the road where damage was recorded, sourced from the authoritative DEVA Roads feature class. If the DEVA Roads layer has no name for the road, "Road Has No Name" is selected. Death Valley National Park Text string containing the road name. Maximum length: 255 characters. Road Name String 255 0 0 MP Milepost reference for the damage feature location along the road. Student Conservation Association Text string containing milepost value. Maximum length: 5 characters. MP String 5 0 0 DamageFeat Broad category of the damaged road feature (e.g., Culvert, Cattle Guard, Road Surface, Signage, Graffiti, Obstacle, Vegetation). Student Conservation Association Text string describing the damaged feature category. Maximum length: 100 characters. Damage Feature String 100 0 0 Damage Specific damage type observed. Valid values include: Cattle Guard Damaged Driving Surface, Cattle Guard Damaged Gates, Cattle Guard Damaged Wings, Cattle Guard Silted In, Culvert Buried Pipe, Culvert Crushed Pipe, Culvert Full of Debris, Culvert Pipe Exposed, Culvert Pipe Blocked By Vegetation, Graffiti Carving, Graffiti Dirt Drawing, Graffiti Paint, Obstacle Eroded Ledge, Obstacle Hole, Obstacle Rock, Obstacle Other, Pothole Single, Pothole Multiple, Signage Damaged, Signage Missing, Vegetation Tree Removal, and n/a - see notes. Student Conservation Association / National Park Service Text string identifying the specific damage type. Maximum length: 100 characters. Damage Type String 100 0 0 DepthHeight_in Depth or height measurement of the damage in inches. Measurement method varies by damage type: for potholes, depth is measured by laying a rover rod across the pothole and measuring from the bottom of the rod to the deepest point. For cattle guards silted in, depth is measured from the top of beams to the highest point of silt. For culverts, the height of the opening from lowest to highest point. For cattle guard wings, vertical height from ground to tallest point. Student Conservation Association Text string representing measurement in inches. Maximum length: 255 characters. Damage Depth/Height (in) Double 8 0 0 Side Side of the road or culvert where the damage is located. For culvert damage, values include Inlet, Outlet, or Middle (for exposed pipe). Student Conservation Association Text string indicating side of road or feature. Maximum length: 50 characters. Side of Road (Culverts) String 50 0 0 Severity Severity rating of the damage: Low, Medium, or High. For potholes, severity is determined by both width and depth thresholds that vary by road classification (2WD, 2WD HC, 4WD HC, 4WD RR) as defined in the Objective Damage Thresholds document. Not all point damage types require a severity rating; uniform types (e.g., culvert damage, cattle guard damage, graffiti, signage) do not have severity fields. Student Conservation Association / National Park Service Low Damage meets minimum collection threshold but does not significantly impair road function for the designated vehicle class. Objective Damage Thresholds v1.0 Medium Damage exceeds low severity threshold and presents a moderate hazard or impediment to the designated vehicle class. Objective Damage Thresholds v1.0 High Damage presents a significant hazard or renders the road impassable or unsafe for the designated vehicle class. Objective Damage Thresholds v1.0 Severity String 10 0 0 Notes Free-text field for additional observations, context, or information that does not fit into other attribute fields. Student Conservation Association Text string. Maximum length: 2000 characters. Notes String 2000 0 0 MPstart Starting milepost reference. Primarily used for line features; may be populated for point features to indicate milepost context. Student Conservation Association Text string containing milepost start value. Maximum length: 10 characters. Milepost Start String 10 0 0 MPend Ending milepost reference. Primarily used for line features; may be populated for point features to indicate milepost context. Student Conservation Association Text string containing milepost end value. Maximum length: 10 characters. Milepost End String 10 0 0 FMSSRoad Road name as it appears in the NPS Facility Management Software System (FMSS), linking the damage record to the park's asset management system. National Park Service Text string containing FMSS road name. Maximum length: 100 characters. Route ID String 100 0 0 LocationID NPS Facility Management Software System (FMSS) location identifier linking the damage record to the park's asset management system. National Park Service Text string containing FMSS location ID. Maximum length: 100 characters. FMSS Location ID String 100 0 0 CorrectiveAction01 Primary recommended corrective action. Values vary by damage type and may include: Clean Pipe, Replace Pipe, Low Water Crossing, Fill Road Over Pipe, Fill, Grade, Replace Cattle Guard, Clean Cattle Guard, Repair Wings, Replace Wings, Repair Gates, Replace Gates, Repair Sign, Replace Sign, Repair Post, Replace Post, Replace Both Sign and Post, Clean (for graffiti), Obstacle Remove Fill Grade, Tree Removal, among others. Student Conservation Association / National Park Service Text string describing primary corrective action. Maximum length: 255 characters. Corrective Action 1 String 255 0 0 CorrectiveAction02 Secondary recommended corrective action, if applicable. Same domain as CorrectiveAction01. Student Conservation Association / National Park Service Text string describing secondary corrective action. Maximum length: 255 characters. Corrective Action 2 String 255 0 0 CorrectiveAction03 Tertiary recommended corrective action, if applicable. Same domain as CorrectiveAction01. Student Conservation Association / National Park Service Text string describing tertiary corrective action. Maximum length: 255 characters. Corrective Action 3 String 255 0 0 CreationDate Date and time the feature was initially created. Auto-populated by editor tracking. Esri Date/time values automatically generated by the geodatabase. Creation Date Date 8 1 0 Creator Username of the individual who initially created the feature. Auto-populated by editor tracking. Esri Text string containing editor username. Maximum length: 128 characters. Creator String 128 0 0 EditDate Date and time the feature was last edited. Auto-populated by editor tracking. Esri Date/time values automatically generated by the geodatabase. Edit Date Date 8 1 0 Editor Username of the individual who last edited the feature. Auto-populated by editor tracking. Esri Text string containing editor username. Maximum length: 128 characters. Editor String 128 0 0 DeleteFeature Flag indicating whether a feature has been marked for deletion during QA/QC post-processing. Student Conservation Association Text string (e.g., "Yes", "No", or blank). Maximum length: 5 characters. Delete Feature String 5 0 0 accuracyThreshold GPS accuracy threshold setting used during data collection, in centimeters. Defines the maximum acceptable horizontal accuracy for the point position collected by the satellite receiver. Student Conservation Association Integer value representing accuracy threshold in centimeters. Collection Accuracy Threshold (ft) Integer 4 0 0 MapSeries Reference to the paper road segment map sheet number used for field planning and hitch/collection tracking. Student Conservation Association Integer value identifying the map series sheet number. Map Series Integer 4 0 0 globalid globalid GlobalID 38 0 0 dataset EPSG 6.5(3.0.1) Simple FALSE 0 TRUE FALSE