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Validation of NRBHM OASIS

Validation of NRBHM OASIS. Model Version: SimBase Intermediate version modified in August 2009 Assumptions: Demand 2007 – Actual monthly pattern for daily average WWRF 2007

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Validation of NRBHM OASIS

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  1. Validation of NRBHM OASIS Model Version: SimBase Intermediate version modified in August 2009 Assumptions: • Demand 2007 – Actual monthly pattern for daily average • WWRF 2007 • Actual monthly pattern for daily average for demand nodes as pattern [Not a function of demand data - changed return flow OCL file]. • Actual monthly pattern for daily average for direct return flow nodes as inflow • Beginning of Yr 2007 Reservoir Levels • No actual Agricultural Data - used as calculated by the model • No actual Evaporation Data - used as calculated by the model • No Actual Reservoir Drought/Special Operation Input Data File Location: • F:\DATA\RBMS\Neuse Basin\Neuse Model\01 OASIS - Neuse Hydrologic Modeling\Validation Run Inputs.xls NCDWR September 2009

  2. Validation of NRBHM OASIS Comparison of Computed vs. Historical Operation: • Falls Lake Elevation • Falls Lake and Beaver Dam Total storage percent • Falls Lake and BD Total WS - WQ percent • Falls Lake Release • West Fork Eno River Reservoir Elevation • West Fork Eno River Reservoir Release • Lake Orange Elevation • Lake Orange Release • Little River and Lake Michie Elevations • Little River and Lake Michie Releases NCDWR September 2009

  3. Validation of NRBHM OASIS Comparison of Computed vs. Historical Data: • Hillsborough Gage Data – node 110 • Clayton Gage Data – node 630 • Princeton Gage Data – node 750 • Goldsboro Gage Data – node 780 • Kinston Gage Data – node 800 NCDWR September 2009

  4. Falls Lake – Beaver Dam Operation NCDWR September 2009

  5. D1 D2 D3 D4 NCDWR September 2009

  6. Upper Rule Curve = 251.5 ‘ NCDWR September 2009

  7. NCDWR September 2009

  8. NCDWR September 2009

  9. NCDWR September 2009

  10. NCDWR September 2009

  11. @ 249’ Falls Elevation = BDam Elevation NCDWR September 2009

  12. NCDWR September 2009

  13. NCDWR September 2009

  14. Upper Rule Curve = 251.5 ‘ Winter Piggyback Release Lower Rule Curve = 236.5 ‘ NCDWR September 2009

  15. Upper Eno Operation NCDWR September 2009

  16. Stage 1 Stage 4 Stage 5 Stage 2 • Withdrawal Restriction Period 2007 • Stage 1: May 27 • Stage 2: Jul 31 • Stage 3: Sep 5 • Stage 4: Sep 28 • Stage 5: Nov 8 Stage 3 Drought Operation?? NCDWR September 2009

  17. NCDWR September 2009

  18. Upper Rule Curve 633’ NCDWR September 2009

  19. Upper Rule Curve 633’ Tier 1 Tier 2 Tier 3 Lower Rule Curve 603’ NCDWR September 2009

  20. Upper Rule Curve 615’ Stage 1 • Withdrawal Restriction Period 2007 • Stage 1: May 27 • Stage 2: Jul 31 • Stage 3: Sep 5 • Stage 4: Sep 28 • Stage 5: Nov 8 Stage 4 Stage 5 Stage 2 Stage 3 ~ 6’ D/D NCDWR September 2009

  21. Upper Rule Curve 615’ NCDWR September 2009

  22. NCDWR September 2009

  23. Stage 5 Stage 4 Stage 1 • Withdrawal Restriction Period 2007 • Stage 1: May 27 • Stage 2: Jul 31 • Stage 3: Sep 5 • Stage 4: Sep 28 • Stage 5: Nov 8 Stage 2 Zero outflow for 2 days in Dec 07 Stage 3 Dead Storage 601.7’ NCDWR September 2009

  24. Lowest Storage 198.3 AF 0% remaining storage for 8 consecutive days from 12/20/07 Dead Storage 198.6 AF NCDWR September 2009

  25. Durham Systems NCDWR September 2009

  26. NCDWR September 2009

  27. NCDWR September 2009

  28. Gage Flows NCDWR September 2009

  29. NCDWR September 2009

  30. Stage 1 Stage 4 Stage 5 Stage 2 • Instream Flow Requirements • @ HB Gage • Stage 1: 1.75 MGD – [May 27] • Stage 2: 1.13 MGD – [Jul 31] • Stage 3: 1.1 MGD – [Sep 5] • Stage 4: 1.1 MGD – [Sep 28] • Stage 5: 0.65 MGD – [Nov 8] Stage 3 NCDWR September 2009

  31. 0% CLoss @ > 12 cfs 10% CLoss @ 4 – 12 cfs 20% CLoss @ <4 cfs NCDWR September 2009

  32. NCDWR September 2009

  33. Clayton Target 254 cfs Clayton Target 184 cfs Clayton Target 184 cfs Clayton Target Safety Factor NCDWR September 2009

  34. Clayton Flood Control Max Target Flow 5332 cfs NCDWR September 2009

  35. NCDWR September 2009

  36. NCDWR September 2009

  37. Flood Control Target Flow = 6003 cfs Min calculated flow = 101 cfs NCDWR September 2009

  38. NCDWR September 2009

  39. Flood Control Target Flow = 7168 cfs NCDWR September 2009

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