Highland Park Dam Mitigation Project Appendix C - Partners for ...

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Figure 8 Rock Dam 3 Cross-Section Cross-section 8 Elevation, ft Rock Structure Channel Low Flow Elev. 577 576 572.6 ft 572.76 ft 575 574 573 572 571 570 569 640 650 660 670 680 690 700 710 720 Station, ft Figure 9 shows the profile of the stretch of Swan Creek through Highland Park with the proposed rock dams. The low flow (30 cfs) is shown over the rock dams and also under existing conditions. See Table 4 for a comparison of WSE between the existing and proposed conditions model at 30 cfs. There is no difference between the two profiles downstream of the proposed cross-sections. Table 4 Comparison of WSE for Existing and Proposed Conditions at 30 cfs 30 cfs SECTIO N NO. CROSS-SECTION RIVER MILES WSE (Proposed) WSE (Existing) DIFFERENCE (P-E) 24.318 18 4.02 571.76 571.76 0 24.327 17 4.08 571.78 571.78 0 24.336 16 4.11 571.78 571.78 0 24.345 15 4.14 571.8 571.8 0 24.354 14 4.18 571.81 571.81 0 24.363 13 4.21 571.81 571.81 0 24.372 12 4.25 571.82 571.82 0 24.381 11 4.30 571.82 571.82 0 24.39 10 4.38 571.82 571.82 0 24.4 Ped Bridge 4.40 571.82 571.82 0 24.409 9 4.41 572.04 572.04 0 24.418 8 4.42 572.06 572.07 -0.01 24.428 8 - proposed rock crest 4.43 572.76 24.438 8 - proposed pool 4.43 572.86 24.447 7 - proposed rock crest 4.45 573.26 24.457 7 - pool 4.45 573.36 572.08 1.28 24.466 6 - proposed rock crest 4.47 573.74 12
30 cfs SECTIO N NO. CROSS-SECTION RIVER MILES WSE (Proposed) WSE (Existing) DIFFERENCE (P-E) 24.486 6 - pool 4.48 573.83 572.09 1.74 24.495 5 4.48 573.83 572.09 1.74 24.504 4 4.49 573.83 572.08 1.75 24.513 3-Dam 4.49 574.55 574.41 0.14 24.522 2-proposed 4.49 574.7 574.5 0.2 24.532 2 4.50 574.7 24.542 2-proposed 4.50 574.7 24.55 South Bridge 4.50 574.7 574.5 0.2 24.551 1 4.51 574.7 574.5 0.2 Figure 9 Profile of Rock Dams Highland Park - Proposed Rock Dams Elevation, ft Thalweg Low Flow - 30 cfs-prop Low Flow-30 cfs-exist 576 575 Existing dam 574 573 572 571 570 569 568 567 4.3 4.35 4.4 4.45 4.5 4.55 River Miles from Maumee Table 5 and Table 6 contain the shear stresses and velocities, respectively, for the stretch of Swan Creek through Highland Park for the 1, 2, 10, 50, and 100-year events and the low flow event (30 cfs). These shear stresses and velocities can be used to size rocks for the proposed dams. 13
Page 1 and 2: TETRA TECH, INC. TECHNICAL MEMORAND
Page 3 and 4: “Original” - The results of the
Page 5 and 6: “Original” - The results of the
Page 7 and 8: Figure 3 100-year Flood Event Compa
Page 9 and 10: * Note: Q = CbH 3/ 2 ft 0.5 C = 3.3
Page 11: Figure 6 Rock Dam 1 Cross-Section C
Page 15 and 16: Velocity (ft/sec) Cross-Section (No
Page 17 and 18: BASE SECTION NO. BASE RIVER MILES P
Page 19: ATTACHMENT A 1. Recreated HEC-2 Cod
Page 22 and 23: ORIGINAL * SHEET 2 BT 20 0 594 594
Page 24 and 25: ORIGINAL BT 270 599.6 592.4 270 599
Page 26 and 27: ORIGINAL GR 596 900 600 910 604 910
Page 28 and 29: ORIGINAL GR 588.7 680 588.4 700 590
Page 30 and 31: ORIGINAL GR 604 602 10 596 20 592 3
Page 32 and 33: ORIGINAL BT 736 604.8 596.2 740 604
Page 34 and 35: ORIGINAL NC 0.07 0.055 0.04 0.1 0.3
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ATTACHMENT B HEC-2 Code with Existi
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Existing Cross-Sections Model GR 58
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Existing Cross-Sections Model X3 10
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Existing Cross-Sections Model SB 1.
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Existing Cross-Sections Model J1 -1
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Proposed Cross-Sections Model T1 Ty
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Proposed Cross-Sections Model GR 56
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Proposed Cross-Sections Model X1 19
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Proposed Cross-Sections Model GR575
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Proposed Cross-Sections Model BT 52
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Proposed Cross-Sections Model NC 0.
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