A 126-file raster dataset provides a discretized map of likely flood extent for the Austin-Round Rock Combined Statistical Area. The files were generated using the Height Above Natural Drainage (HAND) method on 1-meter resolution LIDAR data, processed with open-source TauDEM and Python GIS tools. Author Daniel Hardesty Lewis published the dataset via the Texas Data Repository on March 18,我们发现 2024.
Use Cases
- Modeling flood inundation extent based on elevation above drainage networks.
- Assessing watershed-level flood risk using the HUC-12 hydrologic unit framework.
- Integrating high-resolution terrain data into hydrological simulations.
- Reducing file sizes for large-area flood mapping by using discretized one-foot intervals.
Strengths
- Derived from high-resolution 1-meter LIDAR data, suggesting detailed terrain representation.
- Comprises 126 files covering watersheds based on the national HUC-12 standard.
- Processed using a publicly documented, open-source workflow (HAND-TauDEM).
- Data is discretized in one-foot intervals, which the description states was done to reduce file size.
Limitations
- Column-level documentation is absent; field semantics must be inferred after download.
- Row count and file sizes are unknown, which may limit suitability assessment.
- The dataset represents a processed, discretized version; the raw HAND data is noted as a separate dataset.
Provenance
- Source
- Texas Data Repository Harvested Dataverse
- Collection Method
- Generated using the HAND-TauDEM workflow on 1-meter LIDAR data from TNRIS.
- Time Range
- null
- Freshness
- Last updated 2024-03-18 08:55:08; freshness should be verified.
- Geography
- Austin-Round Rock Combined Statistical Area, Texas, USA