{"action":"create","ckan_id":null,"date_created":"Mon, 23 Feb 2026 23:44:21 GMT","date_finished":null,"harvest_job_id":"55eb0130-5e66-4286-b37b-1899c61e8756","harvest_source_id":"4c62556f-0fa3-402d-90f6-6a46cd80a117","id":"b85b639d-bef2-4a30-8d44-19edafb6b341","identifier":"https://hazards.fema.gov/filedownload/metadata/R10/1156362-DevHydraulicData.xml","parent_identifier":null,"source_hash":"179b43bf40f7d78fb0f84fbf74bbee20526ac87f7c88bf234d2471bf60e68a45","source_raw":"\r\n\r\n \r\n \r\n \r\n Federal Emergency Management Agency\r\n 20080303\r\n DCS Hydraulics Submission for UMATILLA COUNTY, OREGON\r\n FEMA-DCS-Hydraulics\r\n \r\n Washington, District of Columbia\r\n Federal Emergency Management Agency\r\n \r\n http://hazards.fema.gov\r\n \r\n \r\n Federal Emergency Management Agency\r\n Unknown\r\n FEMA CASE 07-10-0802S\r\n \r\n \r\n \r\n \r\n \r\n Recent developments in digital terrain and geospatial database management technology make it possible to protect this investment for existing and future projects to a much greater extent that was possible in the past. The minimum requirement for hydraulics data includes input and output files for all hydraulic models and spatial datasets that are needed to implement the models. (Source: FEMA Guidelines and Specs, Appendix N)\r\n Development of a hydraulic model to provide water-surface elevations for floodplain mapping requires significant investment in time and resources to obtain and process topographic survey data including cross-section and bridge surveys.\r\n \r\n \r\n \r\n \r\n 20080303\r\n \r\n \r\n MIP Submission Date\r\n \r\n \r\n In work\r\n Unknown\r\n \r\n \r\n \r\n -119.367331\r\n -118.361024\r\n 45.919884\r\n 45.639589\r\n \r\n \r\n \r\n \r\n ISO 19115 Topic Category\r\n environment\r\n inlandWaters\r\n \r\n \r\n FEMA NFIP Topic Category\r\n Hydraulics\r\n Digital Flood Insurance Rate Map\r\n DFIRM\r\n Flood Hazard data\r\n 0.2-Percent-Annual-Chance Flood\r\n 1-Percent-Annual-Chance Flood\r\n Floodway\r\n Stream\r\n Lake\r\n Base Flood Elevation\r\n Cross Section\r\n Stream Centerlines\r\n Profile Baseline\r\n Flood Profile\r\n Flow Gage\r\n \r\n \r\n Geographic Names Information System\r\n REGION 10\r\n STATE OR\r\n COUNTY UMATILLA\r\n COUNTY-FIPS 41059\r\n COMMUNITY UMATILLA UNINCORPORATED AREAS\r\n FEMA-CID 41059C\r\n \r\n \r\n None\r\n Acknowledgment of FEMA would be appreciated in products derived from these data. This digital data is produced for the purposes of updating/creating a DFIRM database.\r\n HECRAS, Other Regression/NFF (Region 1)\r\n \r\n \r\n Hydraulic analysis uses all valid existing flood elevation, survey, hydrologic analysis results and other pertinent information for the study area. FEMA approved models are used to compute water surface elevations for required flood events. Computed water surface elevations and topographic data are used to delineate flood hazard boundaries. Roughness coefficients are carefully selected to represent the conditions along stream beds and banks. Base Flood Elevations (BFEs) on the FIRMs and in floodway data tables agree with the flood profiles in the FIS.\r\n Hydraulic analysis provides water surface elevations at different locations along the stream and for different flooding events. Hydraulic submittal includes key physical data used in the process, model parameters and model output. Data developed in surveying and hydrologic analysis are incorporated in hydraulic analysis. Results of hydraulic analysis are used to map Special Flood Hazard Area (SFHA) boundaries. Selection of model parameters (e.g. roughness coefficients, expansion and contraction coefficients, etc) is supported by additional information (e.g. landuse, aerial photo, etc). Model boundary conditions are carefully selected and justified. Modeled velocities are checked for potential erosion.\r\n \r\n \r\n Analysis was conducted using DTM data conforms to a horizontal accuracy of 40 centimeters or better.\r\n \r\n \r\n Analysis was conducted using DTM data that conforms to a vertical accuracy of 20 centimeters or better.\r\n \r\n \r\n \r\n \r\n \r\n \r\n U.S. Army Corps of Engineers, Portland District\r\n 1998\r\n Umatilla River, Squaw Creek, and Meacham Creek HEC-RAS Model\r\n \r\n \r\n online\r\n \r\n \r\n \r\n 1998\r\n \r\n \r\n publication date\r\n \r\n HYDRAMODEL1\r\n In 1998, the Portland District, Corps of Engineers, conducted a flood analysis of the Umatilla River, Squaw Creek and Meacham Creek for the Umatilla Nation. The resulting HEC-RAS model was reviewed by WEST Consultants, Inc. to determine whether it could be adopted for floodplain mapping in the Umatilla Nation.\r\n \r\n \r\n \r\n \r\n WEST Consultants, Inc.\r\n 20080303\r\n Umatilla River, Squaw Creek, and Meacham Creek HEC-RAS Model\r\n \r\n \r\n developed for study\r\n \r\n \r\n \r\n 2008\r\n \r\n \r\n publication date\r\n \r\n HYDRAMODEL2\r\n A review of the HEC-RAS model developed by the Portland District of the Army Corps of Engineers and its results concluded that the model needed revising, mainly due to the use of interpolated sections that missed some parts of the river channel. WEST Consultants revised the model and refined its accuracy using newer LiDAR data but retained the hydrology and bridge information provided by the Corps.\r\n \r\n \r\n \r\n \r\n U.S. Army Corps of Engineers, Portland District\r\n 1998\r\n Umatilla River, Squaw Creek, and Meacham Creek Cross Sections\r\n \r\n \r\n online\r\n \r\n \r\n \r\n 1998\r\n \r\n \r\n publication date\r\n \r\n CROSSSECTION1\r\n Uninterpolated cross sections provided by the Corps' model were re-cut through newer LiDAR data.\r\n \r\n \r\n \r\n \r\n WEST Consultants, Inc.\r\n 2008\r\n Umatilla River, Squaw Creek, and Meacham Creek Cross Sections\r\n \r\n \r\n developed for study\r\n \r\n \r\n \r\n 2008\r\n \r\n \r\n publication date\r\n \r\n CROSSSECTION2\r\n Additional cross-sections were cut to refine the model's accuracy in the overbank areas of the three reaches, but it was decided to retain the Corps' channel sections rather than re-survey them.\r\n \r\n \r\n Hydraulic Study data development involves compiling survey and hydrologic analysis data, selecting an appropriate hydraulic model, preparing model input data, estimating model parameters, simulating water surface elevations for required recurrence intervals and delineate flood hazard boundaries.\r\n 20080225\r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n Universal Transverse Mercator\r\n \r\n 11\r\n \r\n 0.999600\r\n -117.000000\r\n 0.000000\r\n 500000.000000\r\n 0.000000\r\n \r\n \r\n \r\n \r\n coordinate pair\r\n \r\n 0.000270\r\n 0.000270\r\n \r\n survey feet\r\n \r\n \r\n \r\n North American Datum of 1983\r\n Geodetic Reference System 80\r\n 6378137.000000\r\n 298.257222\r\n \r\n \r\n \r\n \r\n \r\n \r\n CrossSections\r\n A linear spatial file of cross sections.\r\n FEMA Guidelines and Specifications for Flood Hazard Mapping Partners, Appendix N: Data Capture Standards and Data Capture Guidelines (available at http://www.fema.gov/fhm/dl_cgs.shtm)\r\n \r\n \r\n \r\n \r\n FloodHazardBoundaries\r\n A linear spatial file containing draft floodway boundaries, 100-year and 500-year boundaries.\r\n FEMA Guidelines and Specifications for Flood Hazard Mapping Partners, Appendix N: Data Capture Standards and Data Capture Guidelines (available at http://www.fema.gov/fhm/dl_cgs.shtm)\r\n \r\n \r\n \r\n \r\n HydraModels\r\n A database table. The highest level representation of a hydrology model. Contains important information on geometry and results files.\r\n FEMA Guidelines and Specifications for Flood Hazard Mapping Partners, Appendix N: Data Capture Standards and Data Capture Guidelines (available at http://www.fema.gov/fhm/dl_cgs.shtm)\r\n \r\n \r\n \r\n \r\n StreamCenterlLines\r\n A spatial dataset showing the centerlines of the stream network. Used for backwater models such as HEC-RAS.\r\n FEMA Guidelines and Specifications for Flood Hazard Mapping Partners, Appendix N: Data Capture Standards and Data Capture Guidelines (available at http://www.fema.gov/fhm/dl_cgs.shtm)\r\n \r\n \r\n \r\n \r\n StreamProfiles\r\n A CAD drawing file containing stream profiles. Used in the FIS narrative.\r\n FEMA Guidelines and Specifications for Flood Hazard Mapping Partners, Appendix N: Data Capture Standards and Data Capture Guidelines (available at http://www.fema.gov/fhm/dl_cgs.shtm)\r\n \r\n \r\n \r\n The Hydraulic submittal is made up of several data themes containing both spatial and attribute information. These data represent the extent of flooding and the water surface elevations for the subject area. The spatial data files and attribute tables include stream centerline, cross-sections, flood hazard boundaries, BFEs, flow, roughness coefficients, manmade structures and other data related to the NFIP.\r\n 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.\r\n \r\n \r\n \r\n \r\n \r\n \r\n FEMA, Mapping Information Platform\r\n \r\n \r\n mailing address\r\n
500 C Street, S.W.
\r\n Washington\r\n District of Columbia\r\n 20472\r\n USA\r\n \r\n 1-877-336-2627\r\n miphelp@mapmodteam.com\r\n \r\n \r\n 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.\r\n \r\n \r\n \r\n FEMA-DCS-Hydraulics\r\n \r\n \r\n \r\n \r\n \r\n http://hazards.fema.gov\r\n \r\n \r\n \r\n \r\n \r\n Contact Distributor\r\n \r\n \r\n \r\n 20080225\r\n \r\n \r\n \r\n Sarah Bengtson\r\n WEST Consultants, Inc.\r\n \r\n \r\n mailing address\r\n
12509 Bel-Red Rd, Ste. 100
\r\n Bellevue\r\n Washington\r\n 98005-2535\r\n USA\r\n \r\n 1-425-646-8806\r\n sbengtson@westconsultants.com\r\n \r\n \r\n FGDC Content Standards for Digital Geospatial Metadata\r\n FGDC-STD-001-1998\r\n local time\r\n \r\n http://hazards.fema.gov\r\n http://www.epsg.org\r\n FEMA NFIP Metadata Content and Format Standard\r\n \r\n \r\n\r\n\r\n","source_transform":null,"status":"error"}