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NRCS Watershed Program In Texas

NRCS Watershed Program In Texas. Water Resources. Authorities Project Activities Rehabilitation Funding. Authorities. Flood Control Act of 1944 (PL 78-534) Pilot Watershed Program (1953) Watershed Protection and Flood Prevention Act of 1954 (PL 83-566 ).

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NRCS Watershed Program In Texas

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  1. NRCS Watershed Program In Texas

  2. Water Resources • Authorities • Project Activities • Rehabilitation • Funding

  3. Authorities • Flood Control Act of 1944 (PL 78-534) • Pilot Watershed Program (1953) • Watershed Protection and Flood Prevention Act of 1954 (PL 83-566)

  4. Flood Control Act of 1944 (PL 78-534) • Authorized work in 11 watersheds on a river basin basis. • 3 of these watersheds were in Texas • Washita River • Middle Colorado • Trinity River

  5. Pilot Watershed Program(1953) • Approved the study of 62 small watersheds • 4 of these were in Texas • Cow Bayou • Green Creek • Calaveras Creek • Escondido Creek

  6. Watershed Protection and Flood Prevention Act of 1954 (PL 83-566) “Small Watershed Program” • Authorized technical and financial assistance to local watershed organizations for planning and carrying out watershed projects. • Limited watershed to 250,000 Acres

  7. PL 83-566 • Included these potential practices: • Watershed Protection • Flood Prevention • Agricultural Water Management • Nonagricultural Water Management • Groundwater Recharge

  8. Watershed Program Activities in Texas • 145 Watershed Projects • 115 Completed Watershed Projects • 30 Projects Remaining • Nearly 2100 structures (FRS & GSS) • 306 miles of channel improvement • Land treatment including critical areas, AWMS, etc.

  9. Sponsoring Local Organizations • Request initial assistance • Provide local leadership • Secure landrights • Carry out O&M after construction is complete • At least one must have the right of imminent domain

  10. Current Watershed Sponsors • Soil and Water Conservation Districts - 106 • Counties - 86 • Cities - 50 • Water Control and Improvement Districts - 20 • Watershed Authorities and Associations - 6 • River Authorities - 1 • State Recreation Areas - 1 • Other Special Purpose Districts - 14

  11. Investments in Watershed Program in Texas • Local sponsors have invested over $1 billion for land treatment, landrights, O & M, and construction. • Federal Government Invested $1.1 billion in financial assistance. • Capitalized benefits have exceeded $2.9 billion to date.

  12. Other Benefits • Sediment Storage above 20 Major Reservoirs • Example: Lake Lavon • Sediment Storage • Lake Lavon 82,600 ac-ft • Project Dams Above Lake Lavon 21,500 ac-ft

  13. Floodwater Retarding Structures (FRS) Constructed by Year

  14. Total FRS Built by Decade

  15. Rehabilitation • Public Law 106-472 (Rehabilitation Amendment to PL-566) • Added authority for rehabilitation • FRS have reached or are near the end of evaluated life. • 217 FRS will exceed evaluated life in 2007

  16. Dams in Texas Exceeding 50 Years of Age

  17. Some Problems Associated with aging structures are Slope Stability Problems

  18. Inlet Structure Deterioration

  19. Sediment Accumulation

  20. Pipe & Plunge BasinFailures

  21. Hazard Classification Changes

  22. Urban Encroachment

  23. Watershed Rehabilitation Needs • Rehabilitation extends the useful life and benefits for an additional 50 to 100 years. • 120 Structures in Texas are in need of repair • Approx. 112 FRS need upgrading to current safety criteria

  24. Future Actions Needed • Sponsors need to defend easements • Prevent encroachment from development • Protect structures from utility and pipeline construction • Insure vegetative cover • Life of Project • Sponsors must provide adequate O&M • Funding –through taxes or bonds • Rehabilitation funding • Request Technical advice/guidance from NRCS as needed • Review & Update O&M Agreements

  25. Future Actions (cont.) • Sponsors should address need to educate the public • Awareness of watershed programs • Dam Safety • Emergency Action Plans • Project benefits

  26. Future Actions (cont.) • NRCS Actions • Provide Technical Assistance for • Operation & Maintenance • Repairs • Upgrades • Rehabilitation Activities

  27. Texas Watershed Rehabilitation Financial Assistance (FA) Funding (Nominal Dollars)

  28. SUMMARY Aging Dams in Texas • Number of floodwater retarding dams 1,971 • Number of dams • exceeding 50 years of age in 2007 217 • Number of dams that • will exceed 50 years of age in 2011 543 • Number of dams that need major repair 120 • Estimated total cost of repairs needed $28 million

  29. SUMMARY Dam Safety in Texas • Number of dams classified as high hazard 213 • Number of dams originally classified as • low hazard that need to be • upgraded to high hazard criteria 112 • Number of high hazard dams • greater than 50 years of age in 2007 14 • Number of high hazard dams • greater than 50 year of age in 2011 61

  30. SUMMARY Rehabilitation of Dams in Texas • Number of high hazard dams rehabilitated to date 5 • Number of high hazard dams that • need to be rehabilitated 112 • Estimated total cost of rehabilitation • needs in Texas $200 million • Estimated Sponsor’s share • of total rehabilitation cost $70 million

  31. NaturalResourcesConservationService Questions? For further information www.tx.nrcs.usda.gov/programs/watersheds/

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