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HEC-RAS Model for flood-inundation maps for Cayuga Inlet, Sixmile Creek, Cascadilla Creek, and Fall Creek at Ithaca, New York

Flood profiles for the stream reaches were computed by combining a one-dimensional step-backwater model for the stream channels and a two-dimensional model for the overbank areas. The resulting hydraulic model was calibrated by using water-surface profiles from five observed storm events. The model was then used to compute 15 water-surface profiles for 5 flood frequencies (50- , 10- , 2- , 1- , and 0.2-percent annual exceedance probabilities, or 2- , 10- , 50- , 100- , and 500-year recurrence intervals) and 3 lake levels (representing average conditions, a 2-year-high condition, and a 100-year-high condition). The geographic information system flood-extent polygons, depth grids, and water surface elevation grids generated using this model are also available as part of this data release.

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Author(s) Elizabeth A Nystrom orcid, Arthur G Lilienthal, William F. Coon orcid
Publication Date 2018
Beginning Date of Data 2015
Ending Date of Data 2018
Data Contact
DOI https://doi.org/10.5066/P9V8ED23
Citation Nystrom, E.A., Lilienthal, A.G., and Coon, W.F., 2018, HEC-RAS Model for flood-inundation maps for Cayuga Inlet, Sixmile Creek, Cascadilla Creek, and Fall Creek at Ithaca, New York: U.S. Geological Survey data release, https://doi.org/10.5066/P9V8ED23.
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Metadata Date 2020-08-25
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License http://www.usa.gov/publicdomain/label/1.0/
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Harvest Source: ScienceBase
Harvest Date: 2024-07-18T13:40:47.875Z