HEC-HMS and HEC-RAS models used to analyze dam failure for the Lago El Guineo Dam, Orocovis, Puerto Rico
Dates
Release Date
2016-01-01
Start Date
1998-08-15
End Date
1998-08-16
Publication Date
2023-09-15
Citation
Gomez-Fragoso, J. and Torres-Sierra, H., 2016, HEC-HMS and HEC-RAS models used to analyze dam failure for the Lago El Guineo Dam, Orocovis, Puerto Rico: U.S. Geological Survey data release, https://doi.org/10.5066/F72J690R.
Summary
The Hydrologic Engineering Center’s Hydrologic Modeling System (HEC-HMS) and Hydrologic Engineering Center’s River Analysis System (HEC-RAS) computer programs, developed by the U.S. Army Corps of Engineers, were used for the hydrologic and hydraulic modeling, respectively, to analyze the potential for dam failure under different hydrologic conditions. The hydrologic assessment was designed to determine the outflow hydrographs and peak discharges for Lago El Guineo and other subbasins in the Río Grande de Manatí hydrographic basin for three extreme rainfall events: (1) a 6-hour probable maximum precipitation event, (2) a 24-hour probable maximum precipitation event, and (3) a 24-hour, 100-year recurrence rainfall event. The hydraulic [...]
Summary
The Hydrologic Engineering Center’s Hydrologic Modeling System (HEC-HMS) and Hydrologic Engineering Center’s River Analysis System (HEC-RAS) computer programs, developed by the U.S. Army Corps of Engineers, were used for the hydrologic and hydraulic modeling, respectively, to analyze the potential for dam failure under different hydrologic conditions. The hydrologic assessment was designed to determine the outflow hydrographs and peak discharges for Lago El Guineo and other subbasins in the Río Grande de Manatí hydrographic basin for three extreme rainfall events: (1) a 6-hour probable maximum precipitation event, (2) a 24-hour probable maximum precipitation event, and (3) a 24-hour, 100-year recurrence rainfall event. The hydraulic study simulated a dam failure of Lago El Guineo Dam using flood hydrographs generated from the hydrologic study. The simulated dam failure generated a hydrograph that was routed downstream from Lago El Guineo Dam through the lower reaches of the Río Toro Negro and the Río Grande de Manatí to determine water-surface profiles developed from the event-based hydrologic scenarios and “sunny day” conditions. This USGS data release contains all of the input and output files for the simulations described in the associated model documentation report (http://doi.org/10.3133/sir20165070). This data release also includes (1) geospatial data of the watersheds (2) precipitation depths for use in the model, and (3) HEC-HMS and HEC-RAS source codes.
The U.S. Geological Survey, in cooperation with the Puerto Rico Electric Power Authority, completed hydrologic and hydraulic analyses to assess the potential hazard to human life and property associated with the hypothetical failure of the Lago El Guineo Dam. The development of the model input and output files included in this data release are documented in U.S. Geological Survey Scientific Investigations Report 2016-5070 (http://doi.org/10.3133/sir20165070).The HEC-RAS computer program was used to determine flood level, flood peak, and time to peak after dam failure at selected locations downstream from the Lago El Guineo Dam for each simulated breach condition. The HEC-HMS computer program (Scharffenberg and Fleming, 2010) was used to determine the Lago El Guineo Basin hydrographs.
Preview Image
Map showing the location of Lago El Guineo in the Rio Grande de Manati hydrographic basin, Puerto Rico