TRITON Ensemble Simulations for Dam-Break Flood Modeling: Taum Sauk and Sanford Dams

This dataset provides ensemble two-dimensional hydrodynamic simulations of dam-break floods generated using the Two-dimensional Runoff Inundation Toolkit for Operational Needs (TRITON). The dataset contains: - Supporting Python code for dependence-preserving sampling - A spreadsheet containing 100 sampled breach-parameter pairs - 100 TRITON simulations for the Taum Sauk Dam case study - 100 TRITON simulations for the Sanford Dam case study The dataset is intended for dam-break flood modeling and benchmarking, uncertainty analysis, probabilistic flood-hazard assessment, method development, and related hydrodynamic studies. Two failure mechanisms are represented: - Taum Sauk Dam, Missouri (2005): instantaneous dam failure - Sanford Dam, Michigan (2020): gradual overtopping failure with delayed peak discharge The ensemble consists of 100 paired values of breach width and non-dimensional reservoir water level. These samples were generated using a bivariate Gaussian copula to preserve dependence between the two variables. The fitted dependence structure was developed from 69 historical dam-failure records reported by Azmi and Thomson (2024). The historical dam-failure data are not redistributed as part of this dataset. Hydrodynamic simulations were performed using TRITON, an open-source, GPU-accelerated two-dimensional hydrodynamic model. The simulations use a 10 m computational grid and a uniform Manning’s roughness coefficient of 0.035. The released dataset includes GeoTIFF outputs for the TRITON variables 'H', 'MH', 'QX', and 'QY'. - 'taumsauk/' contains 100 instantaneous dam-break simulations for the Taum Sauk Upper Reservoir case study. Each run contains 120 GeoTIFF outputs per variable. - 'sanford/' contains 100 gradual overtopping dam-break simulations for the Sanford Dam case study. Each run contains 200 GeoTIFF outputs per variable. - 'sampling_code/' contains the sampling script and '100_Samples.xlsx', the spreadsheet of sampled breach-parameter pairs. Coordinate reference systems: - Sanford: EPSG:32616 - Taum Sauk: EPSG:32615 Validation and observational datasets are not redistributed as part of this dataset. The validation methodology, data sources, and model-performance results are documented in the associated study and cited references.