Laserfiche WebLink
JD -6 Mine - Drainage Design Plan 36 <br />0.5 <br />4.406 <br />1.5 <br />4.5 <br />1.0 <br />19.467 <br />4.5 <br />7.5 <br />2.0 <br />97.555 <br />15 <br />13.5 <br />5.0 <br />948.250 <br />82.5 <br />31.5 <br />Note By default, the WinTR -55 model calculates channel capacity at depths of 0, 0.5, 1, 2, 5, 10, and 20 feet Because many of the surveyed <br />channel profiles exceed 2.0 ft, capacity for the 5 -11 stage is included here for interpolation calculations. The 10 -ft and 20 -11 flow depths <br />from the WinTR -55 output have been omitted. <br />Table 19. Channel Stage to Convey 100 -year Peak Flow <br />100 -Yr <br />Channel <br />Peak Stage <br />D84 <br />(ft) <br />UDS <br />1.675 <br />UDS (planned) <br />1.496 <br />MDS <br />0.089 <br />LDS -E <br />0.168 <br />LDS -N <br />0.209 <br />NJR <br />0.060 <br />5.3 Diversion Structure Stability <br />Diversion structure stability was determined based on allowable velocities for the man -made diversion <br />structures. The Thorne and Zevenbergen (1985) method was used to calculate resistance to flow and mean <br />velocity at the channel cross section as described in Section 2.3.2. The method uses decreased Manning's n <br />values with increasing stage, up to bank -full flow, because the features of channel roughness that contribute <br />to energy dissipation will vary with water level, the value of Manning's n also varies with water level. The <br />initial values of Manning's n were calculated using the resistance equations and a d84 bed grain size of 25 <br />mm. The results for the MDS, LDS -E, and LDS -N are summarized in Table 20. The flow, velocity, shear, <br />and Froude number for each stage are shown in Attachment 5. <br />Table 20. Channel Stage, Velocity, and Shear Stress for 100 -year Peak Flow for the MDS, <br />LDS -E, and LDS -N <br />Diversion <br />Q100 <br />D84 <br />Stage <br />Area <br />Perimeter <br />Width <br />R <br />Hydraulic <br />Slope <br />n <br />Vavg <br />Q <br />Shear <br />Froude <br />Structure <br />Radius <br />(cfs) <br />(mm) <br />(ft) <br />(sq ft) <br />(ft) <br />(ft) <br />(ft) <br />(ft) <br />(ft/ft) <br />(f /s) <br />(cfs) <br />(psf) <br />MDS-PI <br />123 <br />25 <br />02 <br />0.24 <br />2.39 <br />2.35 <br />01 <br />0.1 <br />0.1376 <br />0 047 <br />252 <br />059 <br />085 <br />1.4020 <br />03 <br />054 <br />3.89 <br />3.84 <br />0.14 <br />0.14 <br />0.1376 <br />0.04 <br />367 <br />1 98 <br />1.19 <br />17274 <br />MDS -P2 <br />1.23 <br />25 <br />0.3 <br />0.57 <br />3.69 <br />3.63 <br />015 <br />016 <br />00356 <br />004 <br />2.04 <br />1.15 <br />0.34 <br />09098 <br />0.4 <br />0.98 <br />4.82 <br />474 <br />0.2 <br />0.21 <br />00356 <br />0.036 <br />269 <br />2.65 <br />0.45 <br />1.0407 <br />MDS -P3 <br />1.23 <br />25 <br />03 <br />0.29 <br />2.01 <br />1.91 <br />014 <br />0.15 <br />0.0936 <br />004 <br />3.1 <br />089 <br />0.83 <br />1.4107 <br />0.4 <br />051 <br />2.68 <br />2.54 <br />0.19 <br />0.2 <br />00936 <br />0.037 <br />4.11 <br />2.09 <br />1.11 <br />16199 <br />MDS -P4 <br />1.23 <br />25 <br />0 15 <br />062 <br />5.88 <br />5.87 <br />01 <br />0.1 <br />004 <br />0.049 <br />1.35 <br />0.83 <br />0.26 <br />0.7363 <br />0.2 <br />0.92 <br />6.5 <br />6.47 <br />0.14 <br />0.14 <br />0.04 <br />0.043 <br />189 <br />175 <br />0.36 <br />0.8826 <br />MDS -P5 <br />1.23 <br />25 <br />0.2 <br />034 <br />2.92 <br />2.88 <br />0.12 <br />012 <br />00628 <br />0.045 <br />199 <br />0.68 <br />0.46 <br />10208 <br />03 <br />0.68 <br />385 <br />3.79 <br />018 <br />0.18 <br />0.0628 <br />0 039 <br />3.03 <br />205 <br />0.69 <br />12648 <br />MDS -P6 <br />1.23 <br />25 <br />0.4 <br />034 <br />1.89 <br />1.71 <br />0.18 <br />0.2 <br />00631 <br />0.037 <br />3.25 <br />1 11 <br />0.71 <br />12801 <br />05 <br />0.53 <br />236 <br />2.13 <br />023 <br />025 <br />0.0631 <br />0.035 <br />4.00 <br />2.13 <br />089 <br />1.4102 <br />MDS -P7 <br />1.23 <br />25 <br />0.3 <br />051 <br />3.04 <br />2.97 <br />0.17 <br />017 <br />01119 <br />0 039 <br />386 <br />1.95 <br />1 16 <br />16497 <br />0.4 <br />0.83 <br />3.69 <br />358 <br />0.23 <br />023 <br />0.1119 <br />0.036 <br />5.17 <br />431 <br />1.58 <br />1 8886 <br />4148A.131028 Whetstone Associates <br />