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Hurricane Harvey made landfall near Rockport, Texas on August 25 as a category 4 hurricane with wind gusts exceeding 150 miles per hour. As Harvey moved inland the forward motion of the storm slowed down and produced tremendous rainfall amounts to southeastern Texas and southwestern Louisiana. Historic flooding occurred in Texas and Louisiana as a result of the widespread, heavy rainfall over an 8-day period in Louisiana in August and September 2017. Following the storm event, U.S. Geological Survey (USGS) hydrographers recovered and documented 2,123 high-water marks in Texas, noting location and height of the water above land surface. Many of these high-water marks were used to create flood-inundation maps for...
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Layered geospatial PDF 7.5 Minute Quadrangle Map. Layers of geospatial data include orthoimagery, roads, grids, geographic names, elevation contours, hydrography, and other selected map features. This map is derived from GIS (geospatial information system) data. It represents a repackaging of GIS data in traditional map form, not creation of new information. The geospatial data in this map are from selected National Map data holdings and other government sources.
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Layered geospatial PDF 7.5 Minute Quadrangle Map. Layers of geospatial data include orthoimagery, roads, grids, geographic names, elevation contours, hydrography, and other selected map features. This map is derived from GIS (geospatial information system) data. It represents a repackaging of GIS data in traditional map form, not creation of new information. The geospatial data in this map are from selected National Map data holdings and other government sources.
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These vector contour lines are derived from the 3D Elevation Program using automated and semi-automated processes. They were created to support 1:24,000-scale CONUS and Hawaii, 1:25,000-scale Alaska, and 1:20,000-scale Puerto Rico / US Virgin Island topographic map products, but are also published in this GIS vector format. Contour intervals are assigned by 7.5-minute quadrangle, so this vector dataset is not visually seamless across quadrangle boundaries. The vector lines have elevation attributes (in feet above mean sea level on NAVD88), but this dataset does not carry line symbols or annotation.
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These vector contour lines are derived from the 3D Elevation Program using automated and semi-automated processes. They were created to support 1:24,000-scale CONUS and Hawaii, 1:25,000-scale Alaska, and 1:20,000-scale Puerto Rico / US Virgin Island topographic map products, but are also published in this GIS vector format. Contour intervals are assigned by 7.5-minute quadrangle, so this vector dataset is not visually seamless across quadrangle boundaries. The vector lines have elevation attributes (in feet above mean sea level on NAVD88), but this dataset does not carry line symbols or annotation.
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The U.S. Geological Survey (USGS) in cooperation with the Harris‐Galveston Subsidence District, City of Houston, Fort Bend Subsidence District, and Lone Star Groundwater Conservation District has produced this dataset of groundwater‐level altitudes and groundwater‐level altitude changes in the Chicot, Evangeline, and Jasper aquifers in the Houston‐Galveston region, Texas. This dataset shows current‐year (2018) groundwater‐level altitudes for each aquifer, 5‐year (2013‐18) groundwater‐level changes for each aquifer, long‐term (1990‐2018 and 1977‐2018) groundwater‐level changes for the Chicot and Evangeline aquifers, and long‐term (2000‐2018) groundwater‐level change for the Jasper aquifer. The groundwater‐level measurements...
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The National Hydrography Dataset (NHD) is a feature-based database that interconnects and uniquely identifies the stream segments or reaches that make up the nation's surface water drainage system. NHD data was originally developed at 1:100,000-scale and exists at that scale for the whole country. This high-resolution NHD, generally developed at 1:24,000/1:12,000 scale, adds detail to the original 1:100,000-scale NHD. (Data for Alaska, Puerto Rico and the Virgin Islands was developed at high-resolution, not 1:100,000 scale.) Local resolution NHD is being developed where partners and data exist. The NHD contains reach codes for networked features, flow direction, names, and centerline representations for areal water...
Tags: Administrative watershed units, Administrative watershed units, Area of Complex Channels, Area to be submerged, Basin, All tags...
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The U.S. Geological Survey, in cooperation with the Harris‐Galveston Subsidence District, City of Houston, Fort Bend Subsidence District, Brazoria County Groundwater Conservation District, and Lone Star Groundwater Conservation District, has produced this dataset of water-level changes and approximate water-level altitudes in the Chicot, Evangeline, and Jasper aquifers in the Houston-Galveston region, Texas. This dataset shows current-year (2015-2016) water-level changes for each aquifer, 5-year (2011-2016) water-level changes for each aquifer, long-term (1990-2016 and 1977-2016) water-level changes for the Chicot and Evangeline aquifers, and long-term (2000-2016) water-level changes for the Jasper aquifer. The...
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Please note: a more recent version of this dataset is available. Users are strongly advised to access the newer version of the dataset at https://doi.org/10.5066/P9YGUE2V. The U.S. Geological Survey, in cooperation with the Harris‐Galveston Subsidence District, City of Houston, Fort Bend Subsidence District, and Lone Star Groundwater Conservation District, produced a dataset through 2017 of compaction values in the Chicot and Evangeline aquifers in the Houston‐Galveston region, Texas. This dataset contains compaction values of subsurface sediments (mostly in the fine-grained silt and clay layers because little compaction occurs in sand layers) in the Chicot and Evangeline aquifers that were recorded continuously...


map background search result map search result map Water-Level Measurement Data Collected during 2015-2016 and Approximate Long-Term Water-Level Altitude Changes of Wells Screened in the Chicot, Evangeline, and Jasper Aquifers, Houston-Galveston Region, Texas USGS Topo Map Vector Data (Vector) 37834 Richmond TX Shapefile USGS Topo Map Vector Data (Vector) 550 Alief TX (published 20220823) FileGDB USGS Topo Map Vector Data (Vector) 550 Alief TX (published 20220823) Shapefile USGS Topo Map Vector Data (Vector) 13338 East Bernard TX (published 20220823) FileGDB USGS Topo Map Vector Data (Vector) 23081 Katy TX (published 20220822) Shapefile USGS Topo Map Vector Data (Vector) 29640 Missouri City TX (published 20220823) FileGDB USGS Topo Map Vector Data (Vector) 43622 Sugar Land TX (published 20220820) Shapefile USGS Topo Map Vector Data (Vector) 71830 Thompsons TX (published 20220823) Shapefile USGS National Hydrography Dataset Best Resolution (NHD) for Hydrological Unit (HU) 8 - 12040204 (published 20230308) FileGDB Brazos River Cumulative Compaction of Subsurface Sediments (2017) in 13 Extensometers in the Chicot and Evangeline Aquifers in the Houston-Galveston Region, Texas Groundwater-Level Altitudes and Long-term Groundwater-Level Changes in the Chicot, Evangeline, and Jasper Aquifers, Houston-Galveston Region, Texas, 2018 USGS US Topo 7.5-minute map for Richmond NE, TX 2019 USGS NED 1/3 arc-second Contours for Houston W, Texas 20220819 1 x 1 degree Shapefile US Topo 7.5-minute map for Clodine, TX USGS NED 1/3 arc-second Contours for Seguin E, Texas 20220819 1 x 1 degree GeoPackage USGS Topo Map Vector Data (Vector) 33359 Orchard TX (published 20220822) GeoPackage USGS Topo Map Vector Data (Vector) 31488 Needville TX (published 20220822) GeoPackage USGS Topo Map Vector Data (Vector) 33595 Otey TX (published 20220823) GeoPackage USGS Topo Map Vector Data (Vector) 37834 Richmond TX Shapefile USGS Topo Map Vector Data (Vector) 550 Alief TX (published 20220823) FileGDB USGS Topo Map Vector Data (Vector) 550 Alief TX (published 20220823) Shapefile USGS Topo Map Vector Data (Vector) 13338 East Bernard TX (published 20220823) FileGDB USGS Topo Map Vector Data (Vector) 23081 Katy TX (published 20220822) Shapefile USGS Topo Map Vector Data (Vector) 29640 Missouri City TX (published 20220823) FileGDB USGS Topo Map Vector Data (Vector) 43622 Sugar Land TX (published 20220820) Shapefile USGS Topo Map Vector Data (Vector) 71830 Thompsons TX (published 20220823) Shapefile USGS US Topo 7.5-minute map for Richmond NE, TX 2019 US Topo 7.5-minute map for Clodine, TX USGS Topo Map Vector Data (Vector) 33359 Orchard TX (published 20220822) GeoPackage USGS Topo Map Vector Data (Vector) 31488 Needville TX (published 20220822) GeoPackage USGS Topo Map Vector Data (Vector) 33595 Otey TX (published 20220823) GeoPackage Brazos River USGS National Hydrography Dataset Best Resolution (NHD) for Hydrological Unit (HU) 8 - 12040204 (published 20230308) FileGDB USGS NED 1/3 arc-second Contours for Houston W, Texas 20220819 1 x 1 degree Shapefile USGS NED 1/3 arc-second Contours for Seguin E, Texas 20220819 1 x 1 degree GeoPackage Cumulative Compaction of Subsurface Sediments (2017) in 13 Extensometers in the Chicot and Evangeline Aquifers in the Houston-Galveston Region, Texas Groundwater-Level Altitudes and Long-term Groundwater-Level Changes in the Chicot, Evangeline, and Jasper Aquifers, Houston-Galveston Region, Texas, 2018 Water-Level Measurement Data Collected during 2015-2016 and Approximate Long-Term Water-Level Altitude Changes of Wells Screened in the Chicot, Evangeline, and Jasper Aquifers, Houston-Galveston Region, Texas