20260323 11584600 1.0 FALSE Buildings_Pop 002 20260223 15534700 20260223 15534700 150000000 5000 dataset 20260223 File Geodatabase Table Esri ArcGIS 13.3.0.52636 Buildings_Pop This table includes buildings and populations summary fields for structures intersecting the 500-year floodplain before normalization. <DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN STYLE="text-decoration:underline;">FFRA_Grid</SPAN><SPAN>: This is a foreign key that relates to the Unique_ID field in the FFRA_Grid table. </SPAN></P><P><SPAN STYLE="text-decoration:underline;">Population_preNorm</SPAN><SPAN>: Reflects the total number of people associated with buildings within the 500-year floodplain.</SPAN></P><P><SPAN STYLE="text-decoration:underline;">Bldg_Count_preNorm:</SPAN><SPAN> Reflects the total number of buildings within the 500-year floodplain.</SPAN></P></DIV></DIV></DIV> This data was generated by AtkinsRéalis, using the Exposed Building Data and Flood Quilt (2024) provided by Texas Water Development Board (TWDB) Regional Flood Planning Group (RFPG). The Median DV Category was developed by WERC, using the Base Level Engineering (BLE) models, the FEMA Flood Severity Categories, TWDB RFPG Exposed Building Data, and the TWDB RFPG Flood Quilt (2024). Agricultural Count Agricultural Population Commercial Count Commercial Population Industrial Count Industrial Population Public Count Public Population Residential Count Residential Population Vacant/Unknown Count Vacant/Unknown Population Building Count in 500yr Population in 500yr <DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>The FFRA is provided for the 30-county area at a spatial resolution of 1-kilometer by 1-kilometer for better computational efficiency as well as to align with input data with the coarsest resolution among those that were used in this study. In addition, the selection of the 1-kilometer by 1-kilometer pixel grid for processing FFRA can avoid confusion about the intent of the product – a finer resolution may give a false impression about the precision or intent of this study. This study is not intended to site sirens as part of outdoor warning siren systems but to identify flash flood-prone areas that warrant sirens. FFRA with a resolution of 1x1 kilometer can adequately serve as foundational information for identifying flash flood-prone areas that warrant sirens given the audible radius for outdoor warning sirens typically ranging from approximately 1 to 2 miles.</SPAN></P></DIV></DIV></DIV> Buildings_Pop Table 83551 OBJECTID OBJECTID OID 4 0 0 Internal feature number. Esri Sequential unique whole numbers that are automatically generated. FFRA_Grid FFRA_Grid String 100 0 0 Bldg_Count_preNorm Bldg_Count_preNorm Single 4 0 0 Population_preNorm Population_preNorm Single 4 0 0