The Texas Natural Resources Information System (TNRIS) is pleased to announce the release of approximately 228 square miles of newly acquired high resolution lidar data for portions of Brown County and Fort Bend County. This project was managed by the Texas Strategic Mapping (StratMap) Program and utilized the StratMap Contracts held by the Department of Information Resources (DIR). Collection took place during the leaf-off season in Texas.
The StratMap contributing partner for this project was the Texas Commission on Environmental Quality (TCEQ) and Missouri City, Texas. Lidar acquired from this project will be used for floodplain management and planning, feature extraction, water quality modeling, stream restoration potential analysis, change detection, 9-1-1, wildfire mitigation, habitat identification/modeling for endangered species, and dam safety. Data acquisition and processing were performed by the Sanborn Map Company.
Further details regarding this acquisition can be found by downloading the Project Report(s) found in the data catalog entry.
To download the StratMap 2019 lidar data products, please use the DataHub.
Please see our Lidar status map for statewide lidar coverage.
Vertical NVA RMSEz tested 7.85 cm (Brown County) and 6.2 cm(Missouri City). The tested accuracy in all areas meets the project specification for 10 cm.
Average first-return point density meets the 4 ppsm project specification.
Point data is classified according to the following American Society for Photogrammetry and Remote Sensing (ASPRS) class schema:
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