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<DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>This feature class is a polygon representation of lakes and large ponds in North Central Texas. The data includes waterbodies located in the 16 county North Central Texas Council of Governments (NCTCOG) service area.</SPAN></P><P><SPAN>The schema for this feature class was updated in June 2025 to better align with </SPAN><A href="https://www.usgs.gov/national-hydrography" STYLE="text-decoration:underline;"><SPAN>USGS National Hydrography Dataset (NHD)</SPAN></A><SPAN>. Following the schema updates, newer NHD waterbody data was loaded to replace historic data of unknown provenance dating to the 1990s. The NHD data was first filtered to the 16 county area of interest, then filtered by FTYPE 39004 or 39009 (Lake/Pond: Perennial and Lake/Pond: Perennial - average water elevation). Any named waterbodies were captured along with waterbodies larger than 10,000 sq ft.</SPAN></P><P><SPAN>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. </SPAN></P><P><SPAN>It has been retired as of October 2023, so updates are not anticipated in the near future. USGS is working to produce new data under the </SPAN><A href="https://www.usgs.gov/3dhp" STYLE="text-decoration:underline;"><SPAN>3D Hydrography Program (3DHP).</SPAN></A></P></DIV></DIV></DIV> |