Date of Award
12-2014
Document Type
Thesis
Degree Name
Master of Science (MS)
Legacy Department
Plant and Environmental Science
Committee Chair/Advisor
Dr. Patrick McMillan
Committee Member
Dr. David White
Committee Member
Dr. Dara Park
Abstract
This study was conducted to better predict and assess damage to high-value small-spatial scale landscapes from storm water. Storm water damage in the form of rill formation across the South Carolina Botanic Gardens (SCBG) Natural Heritage Garden Trail has been modelled as a function of contributing area using D8 and D-infinity flow direction algorithms on a preprocessed LiDAR-derived elevation raster. D8 and D-infinity algorithms were also applied over a set of stochastic Monte Carlo simulations (n=1,000) representing elevation error. The contributing area was calculated using each of the four methods for each 5'x5' cell along the trail. The output was then filtered using a moving kernel calculating a value for each cell according to the maximum value within specified radii of neighboring cells. Observed storm water damage along the trail was geo-referenced as a validation dataset for the model. The receiver operating characteristic (ROC) curves of the three contributing area estimates filtered at various filter radii were graphed by comparison with geo-referenced rills. Results indicate that high resolution LiDAR elevation data can be used to localize storm water damage risks. The D-8 and D-infinity algorithms performed equivalently, and the Monte Carlo procedure improved the performance of both. These models should prove effective in predicting and preventing damage in high-value public landscapes.
Recommended Citation
Pellett, Charles, "Storm Water Damage Risk Assessment along the South Carolina Heritage Trail" (2014). All Theses. 2029.
https://open.clemson.edu/all_theses/2029
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MCsim.py (3 kB)
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MCagg.py (1 kB)
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MCsimDinf.py (2 kB)
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