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2018 Bare Earth DEM Data products generated from this project will be used for floodplain management and planning, feature extraction, water quality modeling, stream restoration potential analysis, change detection and emergency management services and will be made available in the public domain through TNRIS. |
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2018 Bare Earth DEM Data products generated from this project will be used for floodplain management and planning, feature extraction, water quality modeling, stream restoration potential analysis, change detection and emergency management services and will be made available in the public domain through TNRIS. |
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Texas Water Development Board |
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5000 |
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<DIV STYLE="text-align:Left;"><DIV><P><SPAN>The Texas Water Development Board (TWDB) in cooperation with their project partners tasked Fugro Geospatial, Inc. (Fugro) under the Department of Information Resources (DIR) Geographic Information Systems (GIS) Hardware, Software and Services contract also known as the Texas Strategic Mapping (StratMap) Contract to acquire high resolution elevation data and associated products from airborne lidar systems during the 2017-2018 leaf-off season. The StratMap Program promotes inter-governmental collaboration and partnerships to purchase geospatial data products that provide cost savings and project efficiencies. Both the StratMap Program and the StratMap Contract are administered by the Texas Natural Resources Information System (TNRIS), a division of TWDB. Project partners include: Houston-Galveston Area Council (H-GAC), Harris County Flood Control District (HCFCD), and the United States Geological Survey (USGS). This Coastal Texas project consists of approximately 9,758 DO4Q tiles and is located on the Texas Coast covering much of Orange to Matagorda County along with Harris County and the surrounding area. The project includes large metropolitan areas as well as coastal areas. The Urban and Coastal AOIs consist of approximately 4.045 square miles and were acquired between January 12 and March 22, 2018 utilizing both Riegl LMS-Q680i and Riegl LMS-Q780 sensors; collecting multiple return x, y, and z as well as intensity data. Specialized in-house and commercial software processes the native lidar data into 3-dimensional positions that can be imported into GIS software for visualization and further analysis. The horizontal datum for the data is the North American Datum of 1983 (NAD83, 2011) in feet and the vertical datum is the North American Vertical Datum of 1988 (NAVD88) in feet realized with GEOID12B</SPAN></P></DIV></DIV> |
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<DIV STYLE="text-align:Left;"><DIV><P><SPAN>Users should be aware that temporal changes may have occurred since this data set was collected and some parts of this data may no longer represent actual surface conditions. Users should not use this data for critical applications without a full awareness of its limitations. Any conclusions drawn from the analysis of this information are not the responsibility of the TWDB or its partners.</SPAN></P></DIV></DIV> |
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2018 Bare Earth DEM |
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["US","Elevation","Terrain","Surface","Lidar","Harris County","Model"] |
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en-US |
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150000000 |
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