The U.S. Army Corps of Engineers (USACE) Risk Management Center (RMC) developed the Reservoir Frequency Analysis (RMC-RFA) software to facilitate hydrologic hazard assessments within the USACE Dam Safety Program. RMC-RFA produces a reservoir stage-frequency curve with uncertainty bounds by utilizing a deterministic flood routing model while treating the inflow volume, the inflow flood hydrograph shape, the seasonal occurrence of the flood event, and the antecedent reservoir stage as uncertain variables rather than fixed values. In order to quantify both the natural variability and knowledge uncertainty in reservoir stage-frequency estimates, RMC-RFA employs a two looped, nested Monte Carlo methodology. The natural variability of the reservoir stage is simulated in the inner loop defined as a realization, which comprises many thousands of simulated flood events. Knowledge uncertainty in the inflow volume frequency distribution is simulated in the outer loop, which comprises many realizations.
Details
This is the Risk Management Center – Reservoir Frequency Analysis Software, RMC-RFA version 1.1 used for stochastic reservoir stage-frequency analysis for a Periodic Assessment or a Semi-Quantitative Risk Assessment (SQRA) level Dam Safety.
New Features
- Compressed projects now retain database connection
- Supports copying of large simulation files
- Read-write process improvements with SQLite
- Improvements to empirical frequency curves
Contact
The RMC-RFA development team can be reached at rmc.rfa@usace.army.mil.