gov.noaa.nmfs.inport:61272 eng UTF8 dataset Elevation OCM Partners resourceProvider NOAA Office for Coastal Management (843) 740-1202 2234 South Hobson Ave Charleston SC 29405-2413 coastal.info@noaa.gov https://coast.noaa.gov WWW:LINK-1.0-http--link NOAA Office for Coastal Management Website NOAA Office for Coastal Management Home Page information pointOfContact 2026-03-04T19:17:17 ISO 19115-2 Geographic Information - Metadata Part 2 Extensions for imagery and gridded data ISO 19115-2:2009(E) 2011 FEMA Lidar DEM: Modoc, California 2012-02-10 publication NOAA/NMFS/EDM 61272 https://www.fisheries.noaa.gov/inport/item/61272 WWW:LINK-1.0-http--link Full Metadata Record View the complete metadata record on InPort for more information about this dataset. information https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/9162/supplemental/Modoc_Final_Report.pdf WWW:LINK-1.0-http--link Dataset report Link to data set report. download https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/9162/supplemental/BakerAECOM_LiDAR_Modoc_Final_QAQC_Report.pdf WWW:LINK-1.0-http--link Dataset report Link to data set report. download https://coast.noaa.gov/dataviewer/ WWW:LINK-1.0-http--link NOAA's Office for Coastal Management (OCM) Data Access Viewer (DAV) The Data Access Viewer (DAV) allows a user to search for and download elevation, imagery, and land cover data for the coastal U.S. and its territories. The data, hosted by the NOAA Office for Coastal Management, can be customized and requested for free download through a checkout interface. An email provides a link to the customized data, while the original data set is available through a link within the viewer. download Digital Mapping Inc. collected lidar data for the Federal Emergency Management Agency (FEMA) in Region 9, Modoc, CA. This bare earth digital elevation model (DEM) dataset encompasses 21 square miles, while the lidar point cloud from which this DEM was derived covers a total of 43 square miles (linked to in the Related Items section, below). Nominal pulse spacing of collection was <1 m. Terrain data is used to represent the topography of a watershed and/or floodplain environment and to extract useful information for hydraulic and hydrologic models. (Source: FEMA Guidelines and Specifications, Appendix N) FEMA, Digital Mapping Inc. for the BakerAECOM, LLC completed NOAA Office for Coastal Management (843) 740-1202 2234 South Hobson Ave Charleston SC 29405-2413 coastal.info@noaa.gov https://coast.noaa.gov WWW:LINK-1.0-http--link NOAA Office for Coastal Management Website NOAA Office for Coastal Management Home Page information pointOfContact NOAA Office for Coastal Management (843) 740-1202 2234 South Hobson Ave Charleston SC 29405-2413 coastal.info@noaa.gov https://coast.noaa.gov WWW:LINK-1.0-http--link NOAA Office for Coastal Management Website NOAA Office for Coastal Management Home Page information custodian notPlanned https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/9162/supplemental/extent_Modoc_CA_m9162.kmz This graphic displays the footprint for this lidar data set. KML EARTH SCIENCE > LAND SURFACE > TOPOGRAPHY > TERRAIN ELEVATION EARTH SCIENCE > OCEANS > BATHYMETRY/SEAFLOOR TOPOGRAPHY > BATHYMETRY > COASTAL BATHYMETRY EARTH SCIENCE > OCEANS > COASTAL PROCESSES > COASTAL ELEVATION theme Global Change Master Directory (GCMD) Science Keywords 17.0 CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA VERTICAL LOCATION > LAND SURFACE VERTICAL LOCATION > SEA FLOOR place Global Change Master Directory (GCMD) Location Keywords 20.8 LIDAR > Light Detection and Ranging instrument Global Change Master Directory (GCMD) Instrument Keywords 17.2 Airplane > Airplane platform Global Change Master Directory (GCMD) Platform Keywords 17.2 Breaklines Digital Terrain Model Elevation Data LIDAR Land Surface Topography theme FEMA NFIP Topic Category COMMUNITY Modoc County COUNT-FIPS 049 COUNTY Modoc FEMA-CID 060192 Region 09 STATE CA place Geographic Names Information System DEMs - partner (no harvest) project InPort otherRestrictions Cite As: OCM Partners, [Date of Access]: 2011 FEMA Lidar DEM: Modoc, California [Data Date Range], https://www.fisheries.noaa.gov/inport/item/61272. NOAA provides no warranty, nor accepts any liability occurring from any incomplete, incorrect, or misleading data, or from any incorrect, incomplete, or misleading use of the data. It is the responsibility of the user to determine whether or not the data is suitable for the intended purpose. otherRestrictions Access Constraints: None otherRestrictions Use Constraints: Users should be aware that temporal changes may have occurred since this data set was collected and some parts of this data may no longer represent actual surface conditions. Users should not use this data for critical applications without a full awareness of its limitations. otherRestrictions Distribution Liability: No warranty expressed or implied is made by FEMA regarding the utility of the data on any other system nor shall the act of distribution constitute any such warranty. Any conclusions drawn from the analysis of this information are not the responsibility of NOAA, the Office for Coastal Management or its partners unclassified NOAA Data Management Plan (DMP) NOAA/NMFS/EDM 61272 https://www.fisheries.noaa.gov/inportserve/waf/noaa/nos/ocmp/dmp/pdf/61272.pdf WWW:LINK-1.0-http--link NOAA Data Management Plan (DMP) NOAA Data Management Plan for this record on InPort. information crossReference 10 eng; US elevation GeoCue, TerraScan, TerraMatch, MicroStation, DashMap, Windows XP -120.58570417 -120.44318533 41.3914362 41.51813209 | Currentness: Ground Condition 2011-05-04 false eng false Appendix N of FEMA Guidelines and Specifications for FEMA Flood Hazard Mapping Partners contains a detailed description of the data themes and references to other relevant information. Zip Zip GeoTIFF NOAA Office for Coastal Management (843) 740-1202 2234 South Hobson Ave Charleston SC 29405-2413 coastal.info@noaa.gov https://coast.noaa.gov WWW:LINK-1.0-http--link NOAA Office for Coastal Management Website NOAA Office for Coastal Management Home Page information distributor https://coast.noaa.gov/dataviewer/#/lidar/search/where:ID=9163 WWW:LINK-1.0-http--link Customized Download Create custom data files by choosing data area, product type, map projection, file format, datum, etc. A new metadata will be produced to reflect your request using this record as a base. download https://noaa-nos-coastal-lidar-pds.s3.us-east-1.amazonaws.com/dem/FEMA_modoc_CA_DEM_2011_9163/ WWW:LINK-1.0-http--link Bulk Download Bulk download of data files in original coordinates and datums. download dataset Horizontal Positional Accuracy Quantitative value: , Test that produced the valued: Vertical Positional Accuracy Modoc tested 0.449 ft (13.69 centimeters) Fundamental Vertical Accuracy at 95% confidence level in open terrain using RMSEz x 1.9600. The Modoc FVA value passes the minimum requirement of 24.5 centimeters. Fundamental Vertical Accuracy (FVA) is defined as “The value by which vertical accuracy can be equitably assessed and compared among datasets. The FVA is determined with vertical checkpoints located only in open terrain, where there is a very high probability that the sensor will have detected the ground surface.” (FEMA Procedure Memorandum No. 61‐ Standards for LiDAR and Other High Quality Digital topography, September, 27, 2010, Page 6) The twenty‐five (25) points are to be evenly distributed throughout the project area. See QA/QC Report for more details. Conceptual Consistency The Terrain data are consistent with the Elevation dataset. A comparison of profile plots with the flow vector data confirms that flow vectors are correctly drawn. Flood hazard boundaries do not extend beyond the ExternalBoundary, if exists. 1-Acqusition: Modoc LIDAR acquisition consisted of 26 flight lines with 2 cross flights. Alturas Airport was flown for the airport calibration. Two base stations were used for the project. The LIDAR misson was flown in 05/04/2011. ALTM Gemini was used as the LIDAR scanner. LIDAR flight settings were: Altitude (m): 1200 System PRF (kHz): 70 Scan Freq (Hz): 39 Scan Angle +/-: 17 Desired Res (m): 0.804 PPM^2: 1.55 2-Processing: LIDAR data were processed and fit to the ground using DASHMap, GeoCue, TerraScan and TerraMatch softwares. All the data were calibrated to determine and eliminate systematic biases that might occur within the hardware of the ALTM Gemini system. A total of 11 aerial targets were surveyed and used to fit the LIDAR data to the ground. Ground point were removed from the top of bridges. LAS tiles that touch processing limit are classified however QA\QC of the ground points were done to the data which were within processing limit. LAS tiles are classified into 6 classes: 1 processed, but unclassified 2 bare-earth ground 7 noise 9 water 10 ignored 11 withheld 3-Breaklines: Breaklines were compiled for streams, lakes, ponds and man-made features -bridges, culverts- that constrict or control the flow of water in 3D data collection mode from LIDAR data. Breaklines were not collected for the areas outside the processing limit. Ponds and lakes are collected as polygons. They have constant elevation and they have elevation values less than the surrounding ground points. For dry streams and streams narrower than 50 feet single stream breaklines were collected. For streams wider than 50 feet edges of the streams were collected along with stream centerline. The project area was relatively flat which made it some of the streams having single elevation across. Stream breaklines were broken at culverts and not broken at bridges. Culvert breaklines snap to stream endpoints on both sides and have the same elevation as the stream breakline at the snapping location. Top and bottom of the bridge breaklines were collected. Breaklines are delivered as ESRI geodatabase file format. Topology rules were applied to the breaklines. Breaklines snap to each other, split at intersections, not self-intersect or overlap each other. 4-Low Confidence Areas: Areas that may not meet the data accuracy requirements due to heavy vegetation were compiled as 2D polygon. Special effort was given to minimize these areas. Ground points were tried to be classified from dense vegetation areas where possible using manual techniques. NOAA Office for Coastal Management (OCM) received 1 bare earth raster DEM file in geotiff format. The data were in California State Plane Zone 1 (NAD83), international feet coordinates and NAVD88 (Geoid03) elevations in international feet, at 10 ft spacing. OCM copied the raster files to https for Digital Coast storage and provisioning purposes. Office for Coastal Management processor Source Contribution: Digital Mapping Inc. LIDAR Data 2012-02-10 publication Digital Mapping Inc originator 2011-05-04