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USDA – NRCS - Oklahoma

USDA – NRCS - Oklahoma. Red River Valley Association 16 th Annual Regional Water Resource Conference November 17 th , 2010 Wichita Falls, TX. USDA – NRCS - Oklahoma. Update of NRCS Activities in Oklahoma. USDA – NRCS - Oklahoma. Farm Bill Activities. USDA – NRCS - Oklahoma.

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USDA – NRCS - Oklahoma

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  1. USDA – NRCS - Oklahoma Red River Valley Association 16th Annual Regional Water Resource Conference November 17th, 2010 Wichita Falls, TX

  2. USDA – NRCS - Oklahoma Update of NRCS Activities in Oklahoma

  3. USDA – NRCS - Oklahoma Farm Bill Activities

  4. USDA – NRCS - Oklahoma

  5. USDA – NRCS - Oklahoma Planning • 3 sites complete • Total Planning Funds - $ 490,000

  6. USDA – NRCS - Oklahoma Construction • 7 sites funded for construction • Regular Funding $ 836,100 • Stimulus Funding $7,545,000

  7. USDA – NRCS - Oklahoma Repair • 12 projects in Red River Valley • Stimulus Funding $1,259,000

  8. USDA – NRCS - Oklahoma EWP • 2 events in Red River Valley • 3 Counties • $1.35 million total

  9. A Tale of Two DamsCottonwood Creek Sites 15 and 54

  10. A Tale of Two Dams • Acknowledgements • Oklahoma Conservation Commission • Mark Harrison, Information Officer, OCC • The True Cost of Unrestrained Development • Watershed Sponsors • Kingfisher and Logan County Conservation Districts • NRCS Planning and Design Staffs

  11. Cottonwood CreekKingfisher, Logan, Canadian, and Oklahoma Counties 15 54

  12. Cottonwood 15

  13. Cottonwood CreekKingfisher, Logan, Canadian, and Oklahoma Counties 15 16 17 54

  14. Cottonwood 15

  15. Cottonwood 15

  16. Cottonwood 15

  17. Cottonwood 15

  18. Cottonwood 15 House

  19. Cottonwood 15 • What is a Design Engineer to do? • Can’t go up with the dam • Can’t go wider with the Auxiliary Spillway • Cost prohibitive to go over the top • Decommission (remove the dam)

  20. Cottonwood 15 Cavalry Creek Site 6

  21. Cottonwood CreekKingfisher, Logan, Canadian, and Oklahoma Counties 15 54

  22. Cottonwood 54

  23. Cottonwood 54

  24. Cottonwood 54

  25. Auxiliary Spillway Crest Embankment Principal Spillway Crest SedimentPool Inlet Principal Spillway Conduit Slide gate (Valley Floor Drain) Natural Ground Cross-Section of Typical Floodwater Retarding Structure Sediment storage prevents loss of detention capacity for life of structure

  26. Auxiliary Spillway Crest AeratedSediment Embankment Principal Spillway Crest Inlet SedimentPool Principal Spillway Conduit Slide gate (Valley Floor Drain) Natural Ground Cross-Section of Typical Floodwater Retarding Structure Aerated Sediment accounts for sediment accumulation in the Detention Pool

  27. Auxiliary Spillway Crest Detention Pool AeratedSediment Embankment Principal Spillway Crest Inlet SedimentPool Principal Spillway Conduit Slide gate (Valley Floor Drain) Natural Ground Cross-Section of Typical Floodwater Retarding Structure Detention storage is the functioning portion of the lake

  28. Freeboard Storage Auxiliary Spillway Crest Detention Pool AeratedSediment Embankment Principal Spillway Crest Inlet SedimentPool Principal Spillway Conduit Slide gate (Valley Floor Drain) Natural Ground Cross-Section of Typical Floodwater Retarding Structure Freeboard or “surcharge” storage accounts for depth of flow in the spillway

  29. Cottonwood 54

  30. Land Rights(Real Property Rights) Sediment Pool

  31. Cottonwood 54

  32. Cottonwood 54 • What’s the Design Engineer to do here? • Can’t go up with the dam • Can’t go wider with the Auxiliary Spillway • Can go down, utilize the sediment pool • Can go to court

  33. A Tale of Two Dams - Conclusions • There are 2107 Small Flood Control Dams in Oklahoma • Development will continue • These issues must be resolved to keep the dams safe, thereby continuing to provide protection to the citizens of Oklahoma • There is a “True Cost of Unrestrained Development”

  34. Questions?

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