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Missouri River Innovative Bank Stabilization & Aquatic Habitat Enhancement

This project highlights an innovative approach to bank stabilization and enhancement of riparian habitat on the Missouri River. It includes the use of Extreme Locked Logs, willow plantings, and stone toe protection to create a stable and environmentally desirable riverbank. The construction process and ice management strategies are also discussed.

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Missouri River Innovative Bank Stabilization & Aquatic Habitat Enhancement

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  1. MISSOURI RIVER INNOVATIVE BANK STABILIZATION & AQUATIC & RIPARIAN HABITAT ENHANCEMENT @ LEWIS & CLARK REGIONAL WATER SYSTEM, VERMILLION, SD.

  2. Aerial shot fall 2007. Looking US @ L & C project, approximately one mile between white arrows.

  3. Our downstream key ties into the upstream section of a buried stone revetment for the highway bridge

  4. Discussion of finer points inside & on-site. PRE-CON MEET-MISSOURI RIVER@L & C-TERRY STOLTENOW-11/1/07

  5. CONCEPTUALLY • Start with a standard bank protection plan that is well understood, well designed, & time tested (low degree of risk) • Add to this the hydraulically rough & environmentally desirable Extreme Locked Logs (113) plus 49,000 unrooted willow pole plantings within & through the riprap, & 59,300 rooted stock plants for the lower, mid, & upper bank areas. Then cover (choke) all exposed stone with soil & seed !!

  6. Stabilization / habitat cross-section from HDR, Inc. CONSTRUCTION-MISSOURI RIVER @ L & C

  7. Rock box keeps rock “clean” & speeds production. CONSTRUCTION-MISSOURI RIVER@L & C-DERRICK-NOV 13, 2007

  8. Tom Powell said they would wear it out, he was right! CONSTRUCTION-MISSOURI RIVER @ L & C-TERRY STOLTENOW-1-11-2008

  9. MID-PROJECT KEYS{Straight trench perpendicular to high flow vectors, place willow poles on both sides in sloped bank area, fill with a 10 ft section of graded stone, backfill & compact 3 ft of soil, then seed}

  10. Filling the key from the land side working toward the river. CONSTRUCTION-MISSOURI RIVER@L & C-TERRY STOLTENOW-11/29/07

  11. Looking at Key #6, now stone filled & soil backfilled. CONSTRUCTION-MISSOURI RIVER @ L & C-DERRICK-Dec 13, 2007

  12. LONGITUDINAL FILL STONE TOE PROTECTION {LFSTP}{Self-adjusting & self-filtering stone. Minimum 10 ft wide by 3 ft thick. Contractor placed 22,986 tons of stone for entire launchable toe.} (Amounts in actual construction have varied from 3.2 to 4.6 tons/ft. in concave & straight sections, to 6.3 to 8.4 tons/per ft. at convex areas (juts).

  13. Looking US. 10 ft wide stone toe looking good! CONSTRUCTION-MISSOURI RIVER @ L & C-TERRY STOLTENOW-11/8/07

  14. Looking US. Smoothing choke soil with the Bobcat. CONSTRUCTION-MISSOURI RIVER @ L & C-TERRY STOLTENOW-12/5/07

  15. INSTALLATION OF THE EXTREME LOCKED LOGS

  16. BANK CROSS-SECTION FROM HDR., INC Self-Adjusting LFSTP Locked Log Looking US at Station 11+00

  17. FUZZY EXTREME LOCKED LOGCedar tree with lots of branches

  18. Looking US. A cedar Fuzzy Extreme Locked Log CONSTRUCTION-MISSOURI RIVER @ L & C-DERRICK-NOV 15, 2007

  19. Looking US. Scraping branches off of the lower 15 ft of the Fuzzy Extreme Locked Log so stone to trunk contact is made, & the Locked Log is truly locked in place. CONSTRUCTION-MISSOURI RIVER @ L & C-DERRICK-NOV 15, 2007

  20. Looking US. Fuzzy Extreme Locked Log is locked in place CONSTRUCTION-MISSOURI RIVER @ L & C-DERRICK-NOV 15, 2007

  21. STONE TOE PROTECTIONWITH INTEGRATEDEXTREME LOCKED LOGS

  22. Looking US. Note calm water between Locked Logs. LFSTP 10 ft wide CONSTRUCTION-MISSOURI RIVER @ L & C-DERRICK-NOV 15, 2007

  23. Looking US. Soil choked toe stone in foreground, US stone not choked yet. Specs call for a minimum of 6 inches of soil over stone, contractor is placing one ft of soil to allow for settling. More soil is better. CONSTRUCTION-MISSOURI RIVER @ L & C-DERRICK-DEC 11, 2007

  24. Looking US. Note slack water DS of all Locked Logs CONSTRUCTION-MISSOURI RIVER @ L & C-DERRICK-NOV 13, 2007

  25. EXTREME LOCKED LOGS CAN BE RETROFITTED INTO EXISTING PROJECTS

  26. Looking DS. Irregular bankline mimics natural shore CONSTRUCTION-MISSOURI RIVER @ L & C-DERRICK-NOV 15, 2007

  27. Looking US. Turbulence off ends of ExLL with “flat” water DS. Note uneven shore & soil choked stone. CONSTRUCTION-MISSOURI RIVER @ L & C-DERRICK-NOV 15, 2007

  28. THE ENVIRONMENTAL AND HYDRAULIC ATTRIBUTES GO HAND-IN-HAND ON THIS PROJECT

  29. Looking US @ self-adjusting toe stone & Extreme Locked Logs, natural bank US. CONSTRUCTION-MISSOURI RIVER @ L & C-DERRICK-NOV 15, 2007

  30. EXTREME LOCKED LOGSWITH ICE

  31. Looking DS at ice buildup US of natural jam. CONSTRUCTION-MISSOURI RIVER @ L & C-DERRICK-DEC 11, 2007

  32. ICE MANAGEMENT FOR STABILIZATION/RESTORATION PROJECTS Increase roughness of the bank and near-bank aquatic area!!! • Ice will form first in slow water • Ice will be thickest in the slower water • Next the entire stream has an ice cover • Then the ice-out occurs • The thickest ice near the bank will stay put so that plants are not sheared & smaller stones are not plucked

  33. Ice surrounding ExLL fends off moving ice floes. CONSTRUCTION-MISSOURI RIVER @ L & C-DERRICK-DEC 11, 2007

  34. Looking DS. Different thickness of ice show current directions and different velocities. CONSTRUCTION-MISSOURI RIVER @ L & C-DERRICK-DEC 11, 2007

  35. Looking DS. Natural jam with ExLL US & DS. CONSTRUCTION-MISSOURI RIVER @ L & C-DERRICK-DEC 11, 2007

  36. Looking DS. Natural jam with ExLL US & DS. CONSTRUCTION-MISSOURI RIVER @ L & C-DERRICK-DEC 11, 2007

  37. Looking US. Close-up of ice surrounding ExLL. CONSTRUCTION-MISSOURI RIVER @ L & C-DERRICK-DEC 11, 2007

  38. PLANT PLANTS WITH VERY LARGE YELLOW MACHINES

  39. BANK CROSS-SECTION FROM HDR., INC Riprap blanket on 3 to 1 slope, 3 ft thick, with 49,000 integrated willow pole plantings in 4 rows Self-Adjusting LFSTP Locked Log Looking US at Station 11+00

  40. Terry Stoltenow, construction inspector with HDR, Inc. with 6-7 ft long bundled willows CONSTRUCTION-MISSOURI RIVER @ L & C-DERRICK-DEC 11, 2007

  41. 9 FT MISSOURI RIVER @ LEWIS & CLARK 15 FT Field analysis-willows grow well from +3 to +7 ft above the 1122 ft flow=1125 to 1129 Min. 6 inches soil 1130 4 on 1 slope 1129 3 on 1 slope 1128 1127 Vadose zone-field analysis shows 3 ft above stage 1124.5 to 1127.5 1126 1125 River flow elevations during growing season June-Sept 2002-2008 24K= 1124.5 June-Sept 2008 26K= 1124.7 Target nav. stage 31K= 1125.3 June-Sept 1967-2004 34K= 1125.5 Height of toe stone 28K= 1125.0 Use this one Basal ends of willows should be at ele. 1125

  42. MISSOURI RIVER @ LEWIS & CLARK Uphill two rows willows are 9 ft long 4 on 1 slope 1130 First two rows of willows are 6-7 ft long 3 on 1 slope Soil choke 1125 Basal ends of willows should be at ele. 1125

  43. THE BUCKET TEETH TICKLER SLIT TRENCH METHOD

  44. Pull bucket back 8”, lean willow poles against stone. CONSTRUCTION-MISSOURI RIVER @ L & C-DERRICK-Dec 13, 2007

  45. Looking US. All 4 rows of willows CONSTRUCTION-MISSOURI RIVER @ L & C-DERRICK-Dec 12, 2007

  46. Looking US at willows & stone. CONSTRUCTION-MISSOURI RIVER @ L & C-DERRICK-DEC 11, 2007

  47. All 4 rows of willow integrated into riprap & soil choked CONSTRUCTION-MISSOURI RIVER @ L & C-DERRICK-Dec 12, 2007

  48. ALL CONSTRUCTION COMPLETE EXCEPT FOR INSTALLATION OF THE UPPER BANK ROOTED-STOCK PLANTINGS(and the small area where the dredge boat is moored)

  49. Looking DS. Ice jam has raised river at toe. CONSTRUCTION-MISSOURI RIVER @ L & C-DERRICK-Feb 25, 2008

  50. Looking US. River frozen, some tops of Locked Logs visible, pole plantings, & upper bank sloped to 4 on 1. CONSTRUCTION-MISSOURI RIVER @ L & C-DERRICK-Feb 25, 2008

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