AECOM 20230831 Version BLE_062023 FEMA-DCS-Hydraulics Washington, DC Federal Emergency Management Agency http://hazards.fema.gov Federal Emergency Management Agency Unknown 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 than 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 Standards for Flood Risk Analysis and Mapping.) 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. 20230831 MIP Submission Date Complete Unknown -102.667 -99.899 33.681 32.705 ISO 19115 Topic Category environment inlandWaters FEMA NFIP Topic Category Hydraulics Flood Insurance Rate Map FIRM Flood Hazard Data 0.2-Percent-Annual-Chance Flood 1-Percent-Annual-Chance Flood 2-Percent-Annual-Chance Flood 4-Percent-Annual-Chance Flood 10-Percent-Annual-Chance Flood 1-Percent-Plus-Annual-Chance Flood Stream Lake Water Body Base Flood Elevation Cross Section Stream Centerline Profile Baseline Backwater BFE Flood Profile Floodway Floodway Data Table Bridge Culvert Dam Manning's Roughness Coefficient (Manning's n) None REGION 6 STATE TX COUNTY BORDEN COUNTY-FIPS 48417 COMMUNITY BORDEN COUNTY, UNINCORPORATED AREAS FEMA-CID 481208 HYDROLOGIC UNIT 12050004 REGION 6 STATE TX COUNTY COCHRAN COUNTY-FIPS 48079 COMMUNITY COCHRAN COUNTY, UNINCORPORATED AREAS FEMA-CID 480746 HYDROLOGIC UNIT 12050004 REGION 6 STATE TX COUNTY COCHRAN COUNTY-FIPS 48079 COMMUNITY CITY OF WHITEFACE FEMA-CID 480747 HYDROLOGIC UNIT 12050004 REGION 6 STATE TX COUNTY DAWSON COUNTY-FIPS 48115 COMMUNITY DAWSON COUNTY, UNINCORPORATED AREAS FEMA-CID 481214 HYDROLOGIC UNIT 12050004 REGION 6 STATE TX COUNTY FISHER COUNTY-FIPS 48151 COMMUNITY FISHER COUNTY, UNINCORPORATED AREAS FEMA-CID 000000 HYDROLOGIC UNIT 12050004 REGION 6 STATE TX COUNTY GARZA COUNTY-FIPS 48169 COMMUNITY GARZA COUNTY, UNINCORPORATED AREAS FEMA-CID 481220 HYDROLOGIC UNIT 12050004 REGION 6 STATE TX COUNTY HASKELL COUNTY-FIPS 48207 COMMUNITY HASKELL COUNTY, UNINCORPORATED AREAS FEMA-CID 480851 HYDROLOGIC UNIT 12050004 REGION 6 STATE TX COUNTY HOCKLEY COUNTY-FIPS 48219 COMMUNITY HOCKLEY COUNTY, UNINCORPORATED AREAS FEMA-CID 480352 HYDROLOGIC UNIT 12050004 REGION 6 STATE TX COUNTY HOCKLEY COUNTY-FIPS 48219 COMMUNITY CITY OF LEVELLAND FEMA-CID 480354 HYDROLOGIC UNIT 12050004 REGION 6 STATE TX COUNTY HOCKLEY COUNTY-FIPS 48219 COMMUNITY CITY OF ROPESVILLE FEMA-CID 000000 HYDROLOGIC UNIT 12050004 REGION 6 STATE TX COUNTY HOCKLEY COUNTY-FIPS 48219 COMMUNITY TOWN OF OPDYKE WEST FEMA-CID 481611 HYDROLOGIC UNIT 12050004 REGION 6 STATE TX COUNTY JONES COUNTY-FIPS 48253 COMMUNITY JONES COUNTY, UNINCORPORATED AREAS FEMA-CID 480884/placekey> HYDROLOGIC UNIT 12050004 REGION 6 STATE TX COUNTY KENT COUNTY-FIPS 48263 COMMUNITY KENT COUNTY, UNINCORPORATED AREAS FEMA-CID 481231 HYDROLOGIC UNIT 12050004 REGION 6 STATE TX COUNTY LUBBOCK COUNTY-FIPS 48303 COMMUNITY LUBBOCK COUNTY, UNINCORPORATED AREAS FEMA-CID 480915 HYDROLOGIC UNIT 12050004 REGION 6 STATE TX COUNTY LYNN COUNTY-FIPS 48305 COMMUNITY LYNN COUNTY, UNINCORPORATED AREAS FEMA-CID 000000 HYDROLOGIC UNIT 12050004 REGION 6 STATE TX COUNTY LYNN COUNTY-FIPS 48305 COMMUNITY CITY OF NEWHOME FEMA-CID 481012 HYDROLOGIC UNIT 12050004 REGION 6 STATE TX COUNTY LYNN COUNTY-FIPS 48305 COMMUNITY CITY OF WILSON FEMA-CID 480922 HYDROLOGIC UNIT 12050004 REGION 6 STATE TX COUNTY LYNN COUNTY-FIPS 48305 COMMUNITY CITY OF TAHOKA FEMA-CID 480454 HYDROLOGIC UNIT 12050004 REGION 6 STATE TX COUNTY SCURRY COUNTY-FIPS 48415 COMMUNITY SCURRY COUNTY, UNINCORPORATED AREAS FEMA-CID 480564 HYDROLOGIC UNIT 12050004 REGION 6 STATE TX COUNTY STONEWALL COUNTY-FIPS 48433 COMMUNITY STONEWALL COUNTY, UNINCORPORATED AREAS FEMA-CID 481246 HYDROLOGIC UNIT 12050004 REGION 6 STATE TX COUNTY STONEWALL COUNTY-FIPS 48433 COMMUNITY CITY OF ASPERMONT FEMA-CID 481093 HYDROLOGIC UNIT 12050004 REGION 6 STATE TX COUNTY TERRY COUNTY-FIPS 48445 COMMUNITY TERRY COUNTY, UNINCORPORATED AREAS FEMA-CID 481019 HYDROLOGIC UNIT 12050004 None Acknowledgement of FEMA would be appreciated in products derived from these data. These digital data are produced for the purposes of updating/creating a FIRM Database. Original data development environment may vary. Finishing of the data is done using Esri's ArcGIS software. The submitted geodatabase was created using ArcGIS version 10.2.2. The hydraulic modeling was performed using HECRAS. The FIRM Database consists of vector files and associated attributes produced in conjunction with the hardcopy FEMA FIRM. The published effective FIRM and FIRM Database are issued as the official designation of the SFHAs. As such they are adopted by local communities and form the basis for administration of the NFIP. For these purposes they are authoritative. Provisions exist in the regulations for public review, appeals and corrections of the flood risk information shown to better match real world conditions. As with any engineering analysis of this type, variation from the estimated flood heights and floodplain boundaries is possible. Details of FEMA's requirements for the FISs and flood mapping process that produces these data are available in the Guidelines and Standards for Flood Risk Analysis and Mapping. Attribute accuracy was tested by manual comparison of source graphics with hardcopy plots and a symbolized display on an interactive computer graphic system. Independent quality control testing of the FIRM Database was also performed. 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. Hydraulics Data Capture submittals match the model output with respect to floodplain boundaries, cross sections, and water surface elevations and their precision. Floodplain boundaries and cross sections are not cartographically modified, and the data may not necessarily agree exactly with the published regulatory FIRM, FIRM Database, flood profiles, and Floodway Data Tables. 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. The FIRM Database consists of vector files and associated attributes produced in conjunction with the hardcopy FEMA FIRM. The published effective FIRM and FIRM Database are issued as the official designation of the SFHAs. As such they are adopted by local communities and form the basis for administration of the NFIP. For these purposes they are authoritative. Provisions exist in the regulations for public review, appeals and corrections of the flood risk information shown to better match real world conditions. As with any engineering analysis of this type, variation from the estimated flood heights and floodplain boundaries is possible. Details of FEMA's requirements for the FIS and flood mapping process that produces these data are available in the Guidelines and Standards for Flood Risk Analysis and Mapping. Horizontal accuracy was tested by manual comparison of source graphics with hardcopy plots and a symbolized display on an interactive computer graphic system. Independent quality control testing of the FIRM Database was also performed. The FIRM Database consists of vector files and associated attributes produced in conjunction with the hardcopy FEMA FIRM. The published effective FIRM and FIRM Database are issued as the official designation of the SFHAs. As such they are adopted by local communities and form the basis for administration of the NFIP. For these purposes they are authoritative. Provisions exist in the regulations for public review, appeals and corrections of the flood risk information shown to better match real world conditions. As with any engineering analysis of this type, variation from the estimated flood heights and floodplain boundaries is possible. Details of FEMA's requirements for the FISs and flood mapping process that produces these data are available in the Guidelines and Standards for Flood Risk Analysis and Mapping. Vertical accuracy was tested by manual comparison of source graphics with hardcopy plots and a symbolized display on an interactive computer graphic system. Independent quality control testing of the FIRM database was also performed. USDA 20140311 Digital 20140311 publication date BASE1 Watershed Boundary HUC8 and HUC10 level USGS 20220606 Digital 20220606 publication date BASE2 The National Hydrography Dataset (NHD) represents the water drainage network of the United States with features such as rivers, streams, canals, lakes, ponds, coastline, dams, and streamgages. TXDOT 20190916 Digital 20190916 publication date BASE4 Texas County Boundaries TXDOT 20220429 Digital 20220429 publication date BASE3 Texas City Boundaries FEMA 20221108 Digital 20221108 publication date FIRM1 Effective Floodplain data and political boundaries from the National Flood Hazard Layer and effective FIRM FIS - Texas AECOM 20230831 Digital 20230831 publication date STUDY1 10, 1, 0.2% Flood Hazard Area boundaries, BFE's, and Stream centerlines studied TWDB 20230607 Digital 20230607 publication date HAZUS1 Hazus data for the BLE study 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 delineating flood hazard boundaries. 20230607 0.017453292519943299 0.017453292519943299 Radians North American Datum 1983 (NAD83) Geodetic Reference System 80 6378137 298.26 North American Vertical Datum of 1988 0.03 feet Attribute values DTL_STUD_AR A spatial data set depicting the locations of effective detailed study areas. FEMA FIRM Database Technical Reference (available at http://www.fema.gov/media-library/assets/documents/32363?id=7417 and on the FEMA Risk MAP Knowledge Sharing Site). DTL_STUD_LN A spatial data set depicting the locations of effective detailed study water lines. FEMA FIRM Database Technical Reference (available at http://www.fema.gov/media-library/assets/documents/32363?id=7417 and on the FEMA Risk MAP Knowledge Sharing Site). FLD_HAZ_AR A spatial data set consisting of polygons that represent the extent of the flood zones. FEMA FIRM Database Technical Reference (available at http://www.fema.gov/media-library/assets/documents/32363?id=7417 and on the FEMA Risk MAP Knowledge Sharing Site). TENPCT_FP A spatial data set consisting of polygons that represent the extent of the 10% annual chance event. FEMA FIRM Database Technical Reference (available at http://www.fema.gov/media-library/assets/documents/32363?id=7417 and on the FEMA Risk MAP Knowledge Sharing Site). WTR_AR Location and attributes for hydrography features shown on the FIRM. FEMA FIRM Database Technical Reference (available at http://www.fema.gov/media-library/assets/documents/32363?id=7417 and on the FEMA Risk MAP Knowledge Sharing Site). WTR_LN Location and attributes for hydrography features modeled. FEMA FIRM Database Technical Reference (available at http://www.fema.gov/media-library/assets/documents/32363?id=7417 and on the FEMA Risk MAP Knowledge Sharing Site). XS_1D Location and attributes for cross-section lines in the area modeled. FEMA FIRM Database Technical Reference (available at http://www.fema.gov/media-library/assets/documents/32363?id=7417 and on the FEMA Risk MAP Knowledge Sharing Site). 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 profile baselines, cross-sections, flood hazard boundaries, BFEs, manmade structures, and other data related to the NFIP. FEMA's FIRM Database Technical Reference contains a detailed description of each attribute code and a reference to other relevant information. FEMA, Mapping Information Platform mailing

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Washington District of Columbia 20472 USA 1-877-336-2627 miphelp@riskmapcds.com 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. FEMA-DCS-Hydraulics http://hazards.fema.gov Contact Distributor 20230607 MIPHelp Federal Emergency Management Agency mailing

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Washington District of Columbia 20472 USA 1-877-336-2627 miphelp@riskmapcds.com FGDC Content Standards for Digital Geospatial Metadata FGDC-STD-001-1998 http://hazards.fema.gov http://www.epsg.org FEMA NFIP Metadata Content and Format Standard