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COE Flood Control

Explore the design and development of enhancements to support modeling of COE flood control releases in RiverWare. This algorithm calculates flood releases for a basin, respecting downstream constraints and balancing reservoir storages effectively. Key areas of development include reservoir methods, control point object, computational subbasin, and rule functions. Methodologies like surcharge release, operating levels, and linear routing coefficients are covered. New features like Forecasted Hydrology computation and Regulation Discharge are also discussed. RiverWare rule function FloodControl can execute flood control methods on designated subbasins to generate a list of release values per reservoir.

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COE Flood Control

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  1. COE Flood Control Design and development of enhancements to support modeling of COE flood control releases in RiverWare

  2. Objective of flood control algorithm Calculate a set of flood releases for all reservoirs in a basin or sub-basin that: • Respect downstream channel constraints • Balance reservoir storages to extent possible • Consider operations and inflows over a specified forecast period • Consider routing via linear routing coefficients • Make new forecast and new plan each timestep • Execute with a rule in RiverWare

  3. 4 Major Areas of Development to Support COE Flood Control Computations • Reservoir Methods • Control Point Object • Computational Subbasin • Rule Function

  4. Reservoir Methods • Surcharge Release method and flag • Dispatch conditions to execute surcharge release • Forecasted Hydrology • Computes at beginning of each timestep based on deterministic inflows • Flood Control Supporting Methods • Operating Levels (periodic slot) • Dispatch methods for flood release

  5. Control Point Object • Regulation Discharge • Empty Space Hydrograph • Maps to upstream constrained reservoirs • List of upstream reservoirs (List Slot) • Linear routing coefficients • Key Control Point Toggle (visual) • Balancing level calculations • Forecasted Hydrology (Accumulated Local Flows

  6. Computational Subbasin • Collection of objects (not new) New: an object with Attributes • Can be seen on the workspace as open obj • Method Categories, e.g., Flood Control • Methods within Categories • SW Balancing; Kansas City Lake Phase • Slots associated with methods • Forecast Period, Balance Period

  7. Rules Function FloodControl(“basin name”) Executes the default Flood Control method on the designated subbasin. Returns a list of slots and values, one pair for each reservoir in the subbasin {resA.FloodRelease 3570.0 resB.FloodRelease 933.2 ….}

  8. Rule calling the function FOREACH (LIST pair IN FloodControl (“BasinName”))DO ( GET SLOT @INDEX 0.0 FROM pair) [] Get NUMERIC @INDEX 1.0 FROM pair ENDFOREACH

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