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SITES Overview

SITES Overview. SITES Overview. Hydrology Rainfall-runoff Inflow hydrographs Hydraulics Principal Spillway Auxiliary Spillway Spillway Erosion Prediction. Hydrology. Rainfall-runoff Inflow hydrographs PSH SDH FBH. PSH. Principal Spillway Hydrograph Generally 100-year rainfall.

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SITES Overview

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  1. SITES Overview

  2. SITES Overview • Hydrology • Rainfall-runoff • Inflow hydrographs • Hydraulics • Principal Spillway • Auxiliary Spillway • Spillway Erosion Prediction

  3. Hydrology • Rainfall-runoff • Inflow hydrographs • PSH • SDH • FBH

  4. PSH • Principal Spillway Hydrograph • Generally 100-year rainfall

  5. SDH • Stability Design Hydrograph • Rainfall depth between PSH and FBH

  6. FBH • Freeboard Hydrograph • Generally Probable Maximum Precipitation (PMP) • Does auxiliary spillway breach?

  7. FBH – No Breach • Headcut does not reach control section • No breach • No uncontrolled reservoir release • Good design

  8. FBH –Breach • Headcut breaches control section • Breach • Uncontrolled reservoir release • Does not meet NRCS criteria

  9. Hydraulics • Principal Spillway • Auxiliary Spillway

  10. Spillway Erosion Prediction • Input Auxiliary Spillway Material Properties • Erosion Model Phases • Surface Particle Detachment • Surface Erosion Downcuts • Headcut Advance

  11. Geologic Properties

  12. Auxiliary Spillway Types • TR-60 • Earthen • Vegetated Earthen • Structural

  13. SITES Software Input • Hydrology • Hydraulics • Auxiliary Spillway Material Description • Input Screens • Schematic Diagram

  14. SITES Software Output • Text • Graphs • Summary View – all runs in project

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