The document discusses the Trinity River Corridor Project which covers 20 miles of the Trinity River and 10,000 acres. The project has multiple objectives including flood protection, environmental restoration, recreation, transportation, and economic development. Flood protection remains the essential component and involves levee construction, wetland creation, and raising levees to provide 800-year flood protection. The project also involves restoring thousands of acres of forest habitat, and creating a extensive trail and park system along the Trinity River featuring lakes, wetlands, and other recreational amenities.

2. The project covers 20 miles of the Trinity River, approx. 10,000 acres

3. Trinity River Corridor Project Objectives This project addresses a number of regional concerns, though flood protection remains the essential cornerstone of this multi-faceted effort. The inter-related components of the project are : Flood Protection Environmental Restoration Recreation Transportation Community/economic development

4. Flood Protection

5. Flood Protection Components Elm Fork Flood Improvements levees and wetlands for flood conveyance Dallas Floodway Extension (DFE) levees and wetlands for flood conveyance Dallas Floodway levee raise and flood conveyance (lakes)

6. Flood Protection - Construction Lower Chain of Wetlands Cells D, E, F & G are complete, and doing their job!

7. Future Work: DFE Levees & Wetlands Upper Chain of Wetlands construction starts Summer 2009 All work complete in 2014 Lamar Levee Cadillac Heights Levee Upper Chain of Wetlands

8. Flood Protection: Dallas Floodway Existing levees will be raised by as much as 2 ft. Will provide 800 year flood protection from Trinity River flooding Construction can begin in 2011

9. Levee Section at Commerce Water Surface Elevations vs Parkway Existing Levee Elevation 429.40 Future 2-Foot Raised Levee Elevation 431.40 Ground Elevation about 400.00 Average low flow conditions that stay within the river channel of the Dallas Floodway Elevation 382.00 800-year Flood Elevation 428.97 100-year Elevation 417.06 Same as 1908 flood of record May 1990 35-year Flood Elevation 415.24 June 2007 5-year Flood Elevation 408.38 Trinity Parkway Flood Protected Elevation 419.06

10. USACE Periodic Inspection Report #9 Periodic Inspections are done every 5 years by USACE (in addition to annual inspections) Visual inspection only; no subsurface investigation Previous inspections rated our levee system as Excellent to Very Good New rating system established by USACE in June 2007 Rating in Periodic Inspection Report #9 for our levee system was “unacceptable”

11. Levee Issues from Periodic Inspection #9 Encroachments Dallas County Jail Oncor Transmission Towers Penetrations Bridge Piers Pipes Dessication Cracking Erosion Vegetation Trees on/near the levees Johnson grass Levees not high enough to contain the Standard Project Flood (800 year flood event)

12. More frequent mowing cycles Rip rap/drainage relocation for erosion Soil borings will determine needs for diaphragm walls Work with other agencies to determine needs The Trinity River Corridor Project will provide many of the “fixes” for the unacceptable conditions of the levee system Diaphragm walls Chain of wetlands Removal of ATSF Railroad Bridge Raising/fattening the levees Resolution of Levee Issues – Next Steps

13. Levee will provide protection for over $25 million in assets (near Manana and Spangler) Wetland swale will provide additional flood conveyance Final plans by March 2009 Construction Start by Fall 2009 Flood Protection: Elm Fork

14. Flooding in March 2006 from Interior Drainage Flood Protection: Interior Drainage Near Pavaho Sump area at Sylvan Ave. North of Bernal St. in West Dallas

15. Flood Protection: Interior Drainage Design contracts are underway for Baker and Pavaho Sumps and Pump Stations (can begin construction in Fall 2009) Design contracts for Able, Charlie, Delta, Trinity Portland, and Hampton pump stations were awarded on November 10, 2008 (cannot begin construction until after Corps completes Environmental Assessment in late 2010) Baker Pavaho Able Charlie Delta Hampton Trinity Portland

16. Environmental Restoration

17. Environmental Restoration 6,000 acres of bottomland hardwood forest Many bird and wildlife species Council has approved the Great Trinity Forest Management Plan How we will operate and maintain the forest for the next 100 years Identifies wildlife and tree species Outlines annual planting, clearing, and budgetary needs Identifies a potential site for RV and tent camping in the forest

18. Recreation

19. Trinity River Corridor Project Design Concept Summary of the design concept for a 10,000-acre portion of the Trinity River Corridor from Royal Lane down to IH-635/IH-20 past the Trinity River Audubon Center. About two-thirds of the subject area lies within the Trinity Forest. By necessity, the guidelines are mostly focused on the Trinity Lakes portion of the corridor—the Trinity Lakes Park —about 2,200 acres in extent from the confluence to the DART Bridge. Trinity Lakes Trinity Forest Audubon Center Confluence: Elm and West Forks Trinity Fields DART Bridge Royal Lane IH-635/ IH-20

20. Recreation: Trinity Fields

21. Recreation: Elm Fork Athletic Complex & Trails Located east of IH-35E on Walnut Hill Lane Construction starts in September 2009; complete in April 2011

22. Recreation: Trinity Lakes

23. Recreation: Trinity Lakes Park

24. Recreation: West Dallas Lake Rowing The West Dallas lake is over 129 acres and over 2000 meters long (meets Olympic standards) that will provide both recreational and competitive boating opportunities for the city and region. Submerged wetland island to provide a rooting structure for water lilies. Amphitheater

25. Recreation: West Dallas Lake Amphitheater West Dallas Lake Amphitheater used for rowing competition viewing.

26. Recreation: View from West Dallas

27. Recreation: Urban Lake, Promenade & Arrival Plaza The promenade will accommodate 19,000 people during peak events and activities 80% of the promenade will be shaded throughout the course of the day. Downtown Overlook Water Maze Deck Park Wetland Water Wall Arrival Plaza

28. Recreation: Urban Lake & Central Island Shade structures take the place of tree vegetation in this plaza preserving views of the downtown skyline and promenade, while Seating walls are integrated with the topography and provide illumination at night. Interactive fountains and dark-colored, exposed aggregate concrete paving slopes into the lake as a beach. Solar-powered Water Taxi Fountain Plaza

29. Located on the west levee at Beckley and Commerce Provides an observation area to watch the construction of the Trinity Project Recreation: Trinity Overlook COMMERCE STREET BRIDGE

30. Recreation: Natural Lake Floating Wetlands The floating wetlands are multifunctional, serving as a design aesthetic, educational demonstration, habitat and water quality improvement measure. Oak Cliff

31. Recreation Recreation: Corinth Wetlands The Corinth Wetlands and Oxbow Lake area is designed to be a passive observation area for understanding and appreciating wetland habitats and systems. This environment will be a magnet for migratory birds and other aquatic and riparian wildlife and birding observation areas, boardwalks, tree groves and shaded respites are planned for this area. Synthetic Decking

32. Recreation: Trinity Forest

33. Recreation: Trinity River Audubon Center Trinity River Audubon Center

34. Recreation: Trinity River Audubon Center Flood Model Children’s Area with underwater view Exhibits on the Trinity River and its ecosystem

35. Trinity River Audubon Center Note the many trails and wetlands surrounding the Audubon Center!

36. Recreation: Moore Gateway Park Located at 8 th Street and Corinth, near the DART rail station

37. Recreation: Standing Wave & Santa Fe Trestle Trail Standing Wave Whitewater Course Santa Fe Trestle Trail

38. Recreation: Standing Wave & Santa Fe Trestle Trail DART Santa Fe Trestle Trail Corinth St. MLK, Jr. Blvd.

39. Recreation: Existing Trails in Rochester Park

40. Recreation: Future Trails Network Trinity Trails Phase I Trinity Trails Phase II

41. Several gateway parks are planned and will begin design soon: Loop 12 Gateway (construction begins 5/2010) IH-20 Gateway (construction begins 6/2010) South Central/Joppa Gateway (construction begins 12/09) Improvements to Rochester Park Gateway (construction begins 12/09) Recreation: Gateway Parks

42. Transportation: Trinity Parkway Toll Road

43. Transportation: Trinity Parkway Toll Road Trinity Parkway complete by 2014

44. Transportation: Trinity Parkway Toll Road Looking South from Hampton Rd.

45. Transportation: S.M. Wright Parkway

46. Trinity Parkway & S.M. Wright IH 45 US 175 Today’s Commuter Flow Future Commuter Flow N SM Wright Freeway Proposed Trinity Parkway Ideal Neighborhood Rochester Park 45 Lamar

47. S.M. Wright Parkway Trinity Parkway connection to IH-45 eliminates need for “Dead Man’s Curve” at US 175 and S.M. Wright Provides opportunity to make S.M. Wright a low-speed road Pedestrian crossings, sidewalks, landscaping Options for split or combined meandering road

48. Transportation: Sylvan Ave. Bridge

49. TxDOT/City of Dallas project Estimated cost $48 million Estimated construction start late 2009 (may be delayed until 2010 bond program) Sylvan Ave. Bridge

50. Transportation: Signature Bridges

51. Transportation: Margaret Hunt Hill Bridge Visit the webcam at www.trinityrivercorridor.org to view construction progress Margaret Hunt Hill Bridge under construction complete in 2011

52. Transportation: Margaret Hunt Hill Bridge Steel Fabrication in Italy Part of the center arch Central Box Girders

53. Continental Ave. Industrial Boulevard Spur 366 (Woodall Rodgers) IH 35E Singleton Blvd.

54. Transportation: Margaret McDermott Bridge Trinity Parkway complete by 2014 Replaces IH-30 Bridge Center arch 250 ft. tall 11 main lanes, reversible HOV lane TxDOT construction to begin in late 2010

55. Trinity River Project Office (214) 671-9500 www.trinityrivercorridor.org ftp://ftp.dallascityhall.com