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HomeMy WebLinkAboutSW4240503_Design Calculations_20240913 STORMWATER CALCULATIONS BY L R N 1 LAND RESOURCE MANAGEMENT FOR WILDERNESS RESERVE PHASE 3 Watauga County OWNER Elevate Land Holdings, LLC 491 Williamson Road Ste. 207 Moorseville, NC 28117 • * 2 :;* *-10 �I!/Il u,I I V 1111\ 1 DENSITY OF DEVELOPMENT IN ORW project area 48.9 watersheds 1 Receiving Stream Name ELK CREEK Stream Class * 12-24-(1) Stream Index Number * CLASS B;Tr,ORW Total Drainage Area (sf) 2130416 On-site Drainage Area (sf) 2130416 Off-site Drainage Area (sf) 0 Proposed Impervious Area** (sf) 135336 Impervious Area** (total) 0 On-site Buildings/Lots (sf) 100000 On-site Streets (sf) 35336 On-site Parking (sf) 0 On-site Sidewalks (sf) 0 Other on-site (sf) 0 Future (sf) 0 Off-site (sf) 0 Existing BUA*** (sf) 0 percent impervious 6.4 2 Point precipitation frequency estimates (inches/hour) NOAA Atlas 14 Volume 2 Version 3 Data type: Precipitation intensity Time series type: Partial duration Project area: Ohio River Basin Location name (ESRI Maps): Deep Gap USA Station Name: - Latitude: 36.2054 Degree Longitude: -81.5186 Degree Elevation (USGS): 2775 ft PRECIPITATION FREQUENCY ESTIMATES by duration for ARI (years): 1 2 5 10 25 50 100 5-min: 4.4 5.24 6.16 6.9 7.9 8.66 9.47 10-min: 3.52 4.2 4.93 5.52 6.29 6.9 7.52 15-min: 2.94 3.52 4.16 4.66 5.32 5.82 6.34 30-min: 2.01 2.43 2.95 3.37 3.94 4.39 4.85 60-min: 1.25 1.52 1.89 2.2 2.62 2.97 3.34 2-hr: 0.734 0.896 1.12 1.31 1.59 1.82 2.07 3-hr: 0.529 0.643 0.805 0.939 1.14 1.31 1.49 6-hr: 0.339 0.411 0.509 0.59 0.708 0.808 0.915 12-hr: 0.217 0.262 0.322 0.368 0.432 0.484 0.538 24-hr: 0.129 0.157 0.199 0.234 0.285 0.326 0.371 3 SWALE DA 1Tc INTENSITY FLOW (ACRE) (BUA_AC) c _ MIN 10-YEAR (IN/HR) 10-YEAR (CFS) 1 0.942 0.086 0.314 8.64 5.8 1.72 2 1.077 0.268 0.424 9.6 5.6 2.56 3 0.126 0.091 0.755 6.36 6.4 0.61 4 0.151 0.102 0.723 6.48 6.4 0.70 5 0.071 0.039 0.633 5 6.9 0.31 6 0.283 0.151 0.624 6.48 6.4 1.13 4 C COVERAGE SF SWALE 1 0.95 DRIVEWAY 46.49 0.11 0.95 PAVEMENT 3717.21 9.06 0.25 GRASS 37282.5 90.83 AREA(SF)= 41046.2 C= 0.314186 C COVERAGE SF SWALE 2 0.95 DRIVEWAY 1539.48 3.28 0.95 ROOF 4820.36 10.27 0.95 PAVEMENT 5320.82 11.34 0.25 GRASS 35238.73 75.1 AREA(SF)= 46919.39 C= 0.424266 C COVERAGE SF SWALE 3 0.95 DRIVEWAY 661.11 12.05 0.95 PAVEMENT 3296.89 60.07 0.25 GRASS 1530.58 27.89 AREA(SF)= 5488.58 C= 0.754794 C COVERAGE SF SWALE 4 0.95 DRIVEWAY 742.56 11.29 0.95 PAVEMENT 3699.54 56.22 0.25 GRASS 2137.94 32.49 AREA(SF)= 6580.04 C= 0.722561 C COVERAGE SF SWALE 5 0.95 DRIVEWAY 45.05 1.45 0.95 PAVEMENT 1650.53 53.24 0.25 GRASS 1404.61 45.31 AREA(SF)= 3100.19 C= 0.632849 C COVERAGE SF SWALE 6 0.95 DRIVEWAY 933.29 7.58 0.95 PAVEMENT 5645.79 45.86 0.25 GRASS 5733.16 46.56 AREA(SF)= 12312.24 C= 0.624047 5 TIME OF CONCENTRATION RESULTS SWALE SHEET FLOW SHALLOW CONCENTRATED TOTALTC LENGTH SLOPE LENGTH SLOPE v MIN 1 100 11.61 434.02 23.78 3.39 8.64 2 100 9.88 376.49 11.18 2.33 9.6 3 100 15.78 105.42 17.23 2.89 6.36 4 100 15.58 126.8 16.86 2.86 6.48 5 5 6 100 15.58 126.8 16.86 2.86 6.48 6 Swale 1 time of concentration Sheet Flow Segment ID: A Surface Description: Grass (Dense) Manning's Roughness Coeff. (n): 0.24 Flow Length, L 100 ft Two-yr 24-hr Rainfall, P: 3.8 in Land Slope, s: 11.61 Tc: 0.108 hr (6.5 min) Shallow Concentrated Flow Segment ID: B Land Cover / Flow Regime Short-grass pasture Shallow Flow Velocity Factor, Kv: 6.962 Flow Length, L: 434.02 ft Watercourse Slope, s: 23.78 Average Velocity, V: 3.39 ft/s Tc: 0.036 hr (2.1 min) Total Tc: 0.144 hr (8.6 min) tc= 8.64 Swale 2 time of concentration Sheet Flow Segment ID: A Surface Description Grass (Dense) Manning's Roughness Coeff. (n): 0.24 Flow Length, L (total L <= 100 Two-yr 24-hr Rainfall, P: 3.8 in Land Slope, s: 9.88 Tc: 0.115 hr (6.9 min) Shallow :oncentrate Flow Segment ID: B Land Cover / Flow Regime Short-grass pasture Shallow Flow Velocity Factor, Kv: 6.962 Flow Length, L: 376.49 ft Watercourse Slope, s: 11.18 Average Velocity, V: 2.33 ft/s Tc: 0.045 hr (2.7 min) Total Tc: 0.16 hr (9.6 min) tc= 9.6 8 Swale 3 time of concentration Sheet Flow Segment ID: A Surface Description Grass (Dense) Manning's Roughness Coeff. (n): 0.24 Flow Length, L (total L <= 100 Two-yr 24-hr Rainfall, P: 3.8 in Land Slope, s: 15.78 Tc: 0.096 hr (5.7 min) Shallow :oncentrate Flow Segment ID: B Land Cover / Flow Regime Short-grass pasture Shallow Flow Velocity Factor, Kv: 6.962 Flow Length, L: 105.42 ft Watercourse Slope, s: 17.23 Average Velocity, V: 2.89 ft/s Tc: 0.01 hr (0.6 min) Total Tc: 0.106 hr (6.3 min) tc= 6.36 9 Swale 4 time of concentration Sheet Flow Segment ID: A Surface Description Grass (Dense) Manning's Roughness Coeff. (n): 0.24 Flow Length, L (total L <= 100 Two-yr 24-hr Rainfall, P: 3.8 in Land Slope, s: 15.58 Tc: 0.096 hr (5.8 min) Shallow :oncentrate Flow Segment ID: B Land Cover / Flow Regime Short-grass pasture Shallow Flow Velocity Factor, Kv: 6.962 Flow Length, L: 126.8 ft Watercourse Slope, s: 16.86 Average Velocity, V: 2.86 ft/s Tc: 0.012 hr (0.7 min) Total Tc: 0.108 hr (6.5 min) tc= 6.48 10 Swale 5 small watershed, assume tc=5' 11 Swale 6 Sheet Flow Segment ID: A Surface Description: Grass (Dense) Manning's Roughness Coeff. (n): 0.24 Flow Length, L (total L <= 100 Two-yr 24-hr Rainfall, P: 3.8 in Land Slope, s: 10.73 Tc: 0.111 hr (6.7 min) Shallow Concentrated Flow Segment ID: B Land Cover / Flow Regime Short-grass pasture Shallow Flow Velocity Factor, Kv: 6.962 Flow Length, L: 414.41 ft Watercourse Slope, s: 13.61 Average Velocity, V: 2.57 ft/s Tc: 0.045 hr (2.7 min) Total Tc: 0.156 hr (9.4 min) tc= 9.36 12 Name SWALE 1 1 Discharge 1.72 SWALE 1 Channel Slope 14.6 Channel Bottom Width 1 1.6 Left Side Slope 3 0.24ft SC250 Reinforced 1.4 1 Vegetation PERMANENT 1.2 0.21ft SC250 Right Side Slope 3 1 Low Flow Liner 0.8 Unvegetated Retardence Class C 6-12 in 0.6 Vegetation Type Sod Former - 0.4 Vegetation Density Very Good 80-95% "z T:1F BOTTOM Soil Type Sandy Loam (GM) o -6 -4 -2 0 2 4 6 SC250 Normal Permissible Calculated Safety Staple Phase Reach Discharge Velocity Mannings N Remarks Depth Shear Stress Shear Stress Factor Pattern SC250 Unvegetated Straight 1.7 cfs 4.89 ft/s 0.21 ft 0.032 3 lbs/ftz 1.93 ibs/ft2 1.55 STABLE E Underlying Substrate Straight 1.7 cfs 4.89 ft/s 0.21 ft 0.032 2.84 lbs/ftz 1.35 lbs/ft2 2.1 STABLE E SC250 Reinforced Straight 1.7 cfs 4.21 ft/s 0.24 ft 0.04 10 lbs/ftz 2 15 lbs 4.64 STABLE E Vegetation /ffz Underlying Substrate Straight 1.7 cfs 4.21 ft/s 0.24 ft 0.04 3 lbs/ftz 1.48 lbs/ftz 2.03 STABLE E Name SWALE 2 Discharge 2.56 _ SWALE 2 Channel Slope 11.46 Channel Bottom Width 1 1.6 - Left Side Slope 3 1.4 - 0.31ft SC250 Reinforced 1.2 Right Side Slope 3 1 Vegetation PERMANENT 0.28ft SC250 Low Flow Liner 0.8 Unvegetated - Retardence Class C 6-12 in \ 0.6 Vegetation Type Sod Former 0.4 3:1 Vegetation Density Very Good 80-95% 0 z 0 _ 1FT BOTTOM Soil Type Sandy Loam (GM) -6 -4 -2 0 2 4 6 SC250 Normal Permissible Calculated Safety Staple Phase Reach Discharge Velocity Mannings N Remarks Depth Shear Stress Shear Stress Factor Pattern SC250 Unvegetated Straight 2.6 cfs 5.03 ft/s 0.28 ft 0.033 3 lbs/ff2 2 01 lbs/ft2 1.5 STABLE E Underlying Substrate Straight 2.6 cfs 5.03 ft/s 0.28 ft 0.033 2.84 lbs/ft2 1.33 lbs/ft2 2.13 STABLE E SC250 Reinforced Straight 2.6 cfs 4.3 ft/s 0.31 ft 0.04 10 lbs/ft2 2.23 lbs/ft2 4.49 STABLE E Vegetation Underlying Substrate Straight 2.6 cfs 4.3 ft/s 0.31 ft3 0.04 4.55 lbs/ft2 1.45 lbs/ft2 3.13 STABLE E Name SWALE 3 - 2 Discharge 0.61 SWALE 3 Channel Slope 14.9 Channel Bottom Width 1 1.6 - 1.4 - Left Side Slope 3 0.15ft SC250 Reinforced Vegetation PERMANENT 1.2 Right Side Slope 3 1 Low Flow Liner 0.8 o.lsft SC250 Unvegetated Retardence Class C 6-12 in 0.6 Vegetation Type Sod Former - 0.4 - Vegetation Density Very Good 80-95% - - 0.2 3:1 0 11 OTTOM Soil Type Sandy Loam (GM) -6 -4 -2 0 2 4 6 I5C250 I Normal Permissible Calculated Safety Staple phase Reach Discharge Velocity Mannings N Remarks Depth Shear Stress Shear Stress Factor Pattern SC250 Unvegetated Straight 0.61 cfs 3.41 ft/5 0.13 ft 0.036 3 lbs/ft2 1 2 ibs/ft2 2.51 STABLE E Underlying Substrate Straight 0.61 cfs 3.41 ft/s 0.13 ft 0.036 2.84 lbs/ft2 0.91 Ibs/ft2 3.11 STABLE E SC250 Reinforced Straight 0.61 cfs 2.85 ft/s 0.15 ft 0.046 10lbs/ft2 1.38 lbs/ft2 7.26 STABLE E Vegetation Underlying Substrate Straight 0.61 cfs 2.85 ft/s 0.15 ft 0.046 6 lbs/ft2 1.03 lbs/ft2 5.84 STABLE E Name SWALE 4 _ A Discharge 0.7 _ SWALE 4 Channel Slope 14.9 _ Channel Bottom Width 1 1.6 - 1.4 Left Side Slope 3 0.16ft 5C250 Reinforced 1.2 Right Side Slope 3 Vegetation PERMANENT 1 0.14ft SC250 Low Flow Liner 0.8 Unvegetated Retardence Class C 6-12 in 0.6 Vegetation Type Sod Former 0.4 Vegetation Density Very Good 80-95% - n' 3:1 0 3NT BOTTOM Soil Type Sandy Loam (GM) -6 -4 -2 o 2 4 6 SC250 Normal Permissible Calculated Safety Staple Phase Reach Discharge Velocity Mannings N Remarks Depth Shear Stress Shear Stress Factor Pattern SC250 Unvegetated Straight 0.7 cfs 3.6 ft/s 0.14 ft 0.035 3 lbs/ff2 1 28 bs/ft2 2.34 STABLE E Underlying Substrate Straight 0.7 cfs 3.6 ft/s 0.14 ft 0.035 2.84 lbs/ft2 0.97 ibs/ft2 2.94 STABLE E SC250 Reinforced Straight 0.7 cfs 3.01 ft/s 0.16 ft 0.045 10 lbs/ft2 1.47 lbs/ft2 6.82 STABLE E Vegetation Underlying Substrate Straight 0.7 cfs 3.01 ft/s 0.16 ft4 0.045 5.76 bs/ft2 1 08 lbs/ft2 5.32 STABLE E Name SWALE 5 c Discharge 0.31 SWALE 5 Channel Slope 14.54 Channel Bottom Width 1 1.6 - Left Side Slope 3 0.11ft SC250 Reinforced 1'4 0.09ft SC250 Right Side Slope 3 Vegetation PERMANENT 1 12 Unvegetated Low Flow Liner _ _ 0.8 Retardence Class C 6-12 in 0.6 Vegetation Type Sod Former ` 0.4 Vegetation Density Very Good 80-95% ".z T:1F BOTTOM Soil Type Sandy Loam (GM) o -6 -4 -2 0 2 4 6 SC25O Normal Permissible Calculated Safety Staple Phase Reach Discharge Velocity Mannings N Remarks Depth Shear Stress Shear Stress Factor Pattern SC25O Unvegetated Straight 0.31 cfs 2.63 ft/s 0.09 ft 0.038 3 lbs/ft2 0 85 lbs/ft2 3.54 STABLE E Underlying Substrate Straight 0.31 cfs 2.63 ft/s 0.09 ft 0.038 2.84 lbs/fc2 0.68 Ibs/fc2 4.16 STABLE E SC25O Reinforced Straight 0.31 cfs 2.13 ff/s 0.11 ft 0.052 10 ibs/ft2 0 99 bs/ft2 10.1 STABLE E Vegetation Underlying Substrate Straight 0.31 cfs 2.13 ft 0.11 ft 0.052 7.49 lbs/ft2 0 78 bs/ft2 9.63 STABLE E Name SWALE 6 k Discharge 1.13 SWALE 6 Channel Slope 11.6 Channel Bottom Width 1 1.6 1.4 - Left Side Slope 3 0.22ft SC250 Reinforced 1.2 Right Side Slope 3 Vegetation PERMANENT 1 Low Flow Liner 0.8 Retardence Class C 6-12 in 0.6 0.19ftSC250 Vegetation Type Sod Former 0.4 Unvegetated Vegetation Density Very Good 80-95% 3.1 0 1F OTTOM Soil Type Sandy Loam (GM) -6 -4 -2 0 2 4 6 SC25O Normal Permissible Calculated Safety Staple Phase Reach Discharge Velocity Mannings N Remarks Depth Shear Stress Shear Stress Factor Pattern SC25O Unvegetated Straight 1.13 cfs 3.79 ft/s 0.19 ft 0.035 3 lbs/ft2 1 37 lbs/ft2 2.19 STABLE E Underlying Substrate Straight 1.13 cfs 3.79 ft/s 0.19 ft 0.035 2.84 lbs/ft2 0 98 lbs/ft2 2.9 STABLE E SC25O Reinforced Straight 1.13 cfs 3.17 ft/s 0.22 ft 0.045 10 lbs/ft2 -I- 1 57 lbs/ft2 6.38 STABLE E Vegetation _ Underlying Substrate Straight 1.13 cfs 3.17 ft/s 0.22 ft5 0.045 5.72 bs/ft2 1 09 lbs/fc2 5.24 STABLE E Q=1.7171168962 LENGTH=1OFT SWALE D50=0.3FT W1=5FT OUTLET=1 DEPTH=12INCH W2=12FT 8 3Do TW=Do*La Outlet 90 n pipe 11/11111 a diameter(D0) • i—a —..-I ■■nn111O11111 .Ii1111■1iiiiii '' is!II41RIr o Tailwater<0.5D0 .■■onnnmm� ■iiiii■mii ,i e21 1'• 11••••• n1111111111 .111111■111 ' %/IIIIII. 11111111..■■■ .IIIIII■ AlryI11111'• `l 70 1111111111111..■■■ .IIIIII I5117LIP if i al 111111111111111111..■■■ .11 PAEl lui', !II l� 1111111111111111111111..■■■ • • 'IM715!lV sill toP IIIIIIIIillililliii1ii111..■■■■■■■1111111111 W./Will/1511 . 111111 5 Q P nnn■Q 60. 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IIIIII IIIIII IIIIIIIIIIIIIIIIIII■■■■■ a,.151►A1i' ,„ �e�g�r° 111 �tk Leo a i, � 5nnmml a a' .`�'D 0non nnnnnnnl ,0 +FEZ f 30- �� _ .di Itp 7 2A 4411 18 /'/'/' J/3 ` 3 Moll �2 �� /� 11111■11111!541111'� N~• i 1!IIII!1111111111''. 11 10 �� gin...r..imnll'' ;�I. -- i11L■, / v 3�/:III/R';"• • Illllii!;nv J Iliil/' 111IIAIIIF O I; 11►- •lilliA11.111i111', IIII milli :111s1..''III N 20 O IIIIII p�lI 2 IV III "�I . . i 1 I ii I 0) Innii■1111�I p 5dii�C-"•• a.IIIII!II11i11111!iln�."e"a ■I mn1■1iiuiii �I__ ���oId� ..` nru1!1111n:'i;au!l IEl 0- 111111ui•11111111 I mrA�S" *MIA IIII11;;•il0ilII IIPddIIiI 1111■1 N IIIIIIII =i, .AIW�' . b.1=i■! .ill l/11111'ilIRi111G1/■111111111■■1 a 1111 •..Siil' !:;,rll!'I!illll!111!iIII'011I1 Illllllllll■l [ 11111 -'n/IIII!S1 �5=1►,EP I illl!illli111111111111111111111111■1 _II I%Ei11• I I■■I/•21-11E' 11Si111111111111111111111111111111■I 0 v-20 I /II!1 pI' ' 1/ p' ' 11111m111■Qnnmllm 10 1 - - =..•. mnmlminnmflmml■n -0 11111111111111 111 I ■■ i • .� 111111111■■1 1111111111111111111111111111111 v=15 0,-1,, �—L./--�' IIIIIIIIIIIIIIIIIIIIIII uiiiiiiiii..1 IIIIIIIIn11111Illllllmu -1 '_.-iGr�" ��rL—r�- - - IIIIln11111111■1 nnml■n 1111111111111111111■■■�■y�!y I i■R.41■■II:;MI� / - - 111111111111111■1 IIIIIIIIIII■I 1111111111111111111111111'C■L111 a-:�:.!• - i I-�� 11111111111111111111111■11111■■l 1111111 11111111 ILL''�•�• ::III ..illoniI� - 1111111111■■■11111■I -- 1111111 lllllI ::ai11m.1iiillr�.■■Ii■■■II 11111111111111111111111I1111111111■I - mm�:::...p:..;......--liillll.■■■■ ••• Illllllllllll111111IIIIImiiiIII■Ell I11111111ii1IIII111111IIIIIl11111111IlIIIII■■■■■nnn1� 111111111111111!1111111 IIIII111111■I 0 0 — 5 10 20 30 50 100 200 300 500 1000 Discharge(ft3/sec) Curves may not be extrapolated. Figure 6-34.1 -Design of Outlet Protection From a Round Pipe Flowing Full,Minimum Tailwater Condition (Tw<0.5 Diameter) GSWCC 2016 Edition 6-210 18 Q=0.6985461891 LENGTH=10FT SWALE D50=0.3FT W1=5FT OUTLET=4 DEPTH=12INCH W2=12FT 8 3Do TW=Do*La Outlet 90 n pipe mum a diameter(Do) • 6 _ _ i — Rn ■■■1111umn Fo h-a —..-I ■■nn111O11111 .Ii1111■1iiiiii q is!1I!IIRIr o Tailwater<0.5D0 .■■onnnmm� ■iiiii■mii ,i e21 1'• 11••••• n1111111111 .111111■111 ' %/IIIIII. 11111111..■■■ .IIIIII■ AIryI11111'• `l 70 1111111111111..■■■ .IIIIII I5117LIP if i al 111111111111111111..■■■ .11 PAEl lui', !II l� 1111111111111111111111..■■■ • • 'IM715!lV sill toP IIi11111111i1il1iii1ii111..■■■■■■■1111111111 W./Will/1511 . 111111 5 Q P nnn■Q 60. 11111111111111111111111..■■■ a,.l!8rn1!I' ,„ veOg�r° Iii Ptk Leo a i, \�\w� 5nnmmi a a' .`1'D 4NEN nnnnnn■1 ,0 4 40 mm• _ ����I:I�Lt 1///2 ,�0- 4 +FEZ 4A.4I1 18 - "V'/' J.3 ` 3 �2 �� /� 11111■11111!541111'� N~• i 1!111I:Ii111111111''. II 10 �� 5n i■nm.,.".. '' ;.I�in -- illl,■IILA J iliil/' 'J!IIIPIIIF O 1! 11►- •ll!.1115111I111', IIII JIII!I allsl..''111 N 20 O AIICI I . :a�II 2 N III "�I . . i 4 i ii" I U) IIi1111.i11iliiil!•I p 5dii�C a.1111I!sllinl1111!iI19�i--"a ■I IIII111.IIIIIIImms I__ '-,VAINIU1d� 5` nrimsmnn:!;;ausl 1El o- 111111II•IIIIIIil�1 mmourr MIA •I,III'!;'ill'dIIIIIIP 11111 III MI N 11111111 = , .AIW� . b.1=iq .ill l/11111'illl!i11151P�111111111■■I a 11111 ► •..Sill' !:;,rll!'I!illll!111!illl!illlll 11111111111■1 [ 11111 -'i I@iiI • 15=1Gil7I IIII!IIIliI11111I11111111111i1i11i■I _II %%Ei�!i A ulnI�71-111" 1151111111111111111111f11111111111■I 0 v-20 I /I"1 pi,- ' 1' p' ' nnnnmm�nnnnnmm�im i0 1 - - =..'. mmm�mnnnmflimm�iln -� 11111IIIIIIIII HMV ■■ i • .� 1111111111■I 1111111111111111111111111111111 v=15 ■ .15,E ///—/�' IIII111111111111111111111111111111■1 IIIIIIIInnnnnunnllum -1 d'_.PiirnI: %f/—ram' - - IIIIIIIIIIIIIIIIIIIIIII n111111111n■l IIIIIIIIIIIIIIIIIn■■■�■y�!y I i.1!.41■■i:i�� / - - IIIIIIIIIIIIIIIIIIIIIII IIIIIIIIIIn■I 1111111111111111111111111' rin a-:�:.!• - i I"//_ 11111111111111111111111 n111111111n■l 1111111 11111111 ILL'":�• ::III ..illoniI� - 1■Mlnnnnnnn■■■iiinn■■I -- 1111111 lllll1r::nniiniiliil•�.■■Ni■■■11� 1111111111111111111111111111111111■I - n.!ll 11;pp•,.;,,....--liiliii....■ I■IM Illllliiiliiiilililllll.ililiiiii... 1111111111I[[IIIIII■IIIIIImnnnnllllll■■■■■■■■■■■.. i'iiiiiiiiliiiiiiiiiiiii IMiiiiiiiil■I 0 0 — 5 10 20 30 50 100 200 300 500 1000 Discharge(ft3/sec) Curves may not be extrapolated. Figure 6-34.1 -Design of Outlet Protection From a Round Pipe Flowing Full,Minimum Tailwater Condition (Tw<0.5 Diameter) GSWCC 2016 Edition 6-210 19 Q=0.3107777582 LENGTH=10FT SWALE D50=0.3FT W1=5FT OUTLET=5 DEPTH=12INCH W2=12FT 8 3Do TW=Do*La Outlet 90 n pipe 11/11111 a diameter(D0) —La ~I ■■nnlll■111111 .11111i•iiii111 a'' li!i1411i11" o Tailwater<0.5D0 .■■onnnmmn .mni■nnl ,Alms! ME NE■■■■1■11■111■ ■111111■III ' %/I111111. IIIIIIIL.■■■ 11111111■ I I l711'• `{�l 70 nnnnnnl■1■0■■ ■Inml r.Ilmrii i al 11111111111111111111.■■■ ■111 171dV '11 �l� 1111111111111111111111■1.■■■ • • '11717!lV sill t°1' IIIIIIIIIIIIIIIIIIIIIIIII..■■■■■■■1111111111 W./WW1/1511 . SIIIII 5 Q W Ei0. nnn■■llimmu nnnnimmomm a,.li8►An1' ,„ �e�g�r° 111 I tk �e a , �\�\w� 5nnmml a a'En +FEZ f 30_ �� _ di lk 7 2A l 18 - "V'/' J/3 ` 3 .1 1111111 �2 1 /� 11111■11111!541111'� N~• i IIIIII!iillll!III11'.i'7 11 10 or -- 711 ■!ILA / v 3�/:III/R';"• • Illllii!; v J 11Si1/' IIMI15111�O I; 11►- •li!n115111I111', IIII JIII!I allsl..''III N 20 O IIII:II p�lI 2 IV III -DI . . i 4 I /, I 0) I 1 nlnn.nnnn■■M I "aii�!'"•• a.nnI!IIII!i1nI!iIPW"• -a n mnn•n111111 I__ ��AM■nl�% 5` nrun!m111Ti;au!I Im o- IIIu 11•11111111 I mIImeS" MIA Ililln;•i10illIIIIPddIIiI III MI 2 llllnn ■ =is .AIW�' . b.1�iq .IIIsI111Pi11mIII lP'M111111111I■I a 1111 ..Siil' !:;,rll!'I!illll!111!iIII'011I1 II111111111■1 [ 11111 'ii IIIIIIII • !!5=U P I illl!i1111111111111111111111111111■I _II %%1i■1!i A ulnI�71-1n' 1151111111111111111111111111111111■l 0 v-20 I /I"1 p1,- p' 1' p' ' nnnnmm�nnnQnmm�lm 1O 1 - - =..•. mmm�mnnnmflmmnnn i -0 11111111111111 HMV ■■ i • .� 111111111I■I 1111111111111111111111111111111 v=15 ■ .15,E ///—/�' IIIIIIIIIIIIIIIIIIIIIII 11111111111■1 IIIIIIIInnnnnunnllum -1 d'_. arm/: %f/- - - - IIIIInnmmmnunl nmmmnn IIIIIIIIIIIInnn llll1�y�y�!y1 i.R.�■■�5i��■r / - - 11111111111111111111111 I1111111111■I nnllnnn l'C1Lln a-.�■1lzi - i 1.-�� 11111111111111111111111 I1111111111■l 1111111 11111111 ILL''�:�• ::III ..illoniI� - I.nl nnnnnn1111111 nnnnnl■l -- 1111111 lllll1r1iB■1n....ilr�all■Ni■■■1111■ 11111111111111111111111 I1111111111■I - n.!ll 11;pp•,.;,,...:=-linuml•■■■ I■IM 1111111111111111111111111111111111■I IIIIIIIIIIIIIIIIIII■nnmm�nnnnnll■■■■■nn■■� 111111iiiiiiiiiiiiiiii1 IIIIIIIIIII■I 0 0 — 5 10 20 30 50 100 200 300 500 1000 Discharge(ft3/sec) Curves may not be extrapolated. Figure 6-34.1 -Design of Outlet Protection From a Round Pipe Flowing Full,Minimum Tailwater Condition (Tw<0.5 Diameter) GSWCC 2016 Edition 6-210 20 Q=1.1288765472 LENGTH=1OFT SWALE D50=0.3FT W1=5FT OUTLET=6 DEPTH=12INCH W2=12FT 8 3Do TW=Do*La Outlet 90 n pipe mum a diameter(D0) • 6 _ _ i — Rn ■■■1111umn Fo h�a �I ■■nn111O11111 .Ii1111■1iiiiii '' is!1I!IIRIr o Tailwater<0.5D0 .■■onnnmm� ■iiiii■mii ,i e21 1'• 11••••• n1111111111 .111111■111 ' %/IIIIII. 11111111..■■■ .IIIIII■ AIryI11111'• `l 70 1111111111111..■■■ .IIIIII I5117LIP if i al 111111111111111111..■■■ .11 PAEl lui', !II l� 1111111111111111111111..■■■ • • 'IM715!lV sill toP IIIIIIIIillililliii1ii111..■■■■■■■1111111111 W./Will/1511 . 111111 5 Q P nnn■Q 60. 11111111111111111111111..■■■ a,.l!8rn1!I' ,„ veOg�r° Iii Ptk Leo a i, \�\w� 5nnmmi a a' .`1'D 4NEN nnnnnn■1 ,0 +FEZ I c lk f 4A.4I1 18 - "V'/' J.3 ` 3 �2 �� /� 11111■11111!541111'� N~• i 1!111I:Ii111111111''. II 10 �� 5n i■nm.,.".. '' ;.I�in -- illl,■IILA J iliil/' 'J!IIIPIIIF O 1! 11►- •ll!.1115111I111', IIII JIII!I allsl..''111 N 20 O AIICI I . :a�II 2 N III "�I . . i 4 i ii" I U) IIIIIII.IIIiliiil!•I p 5dii�C a.IIIII!sllinl1111!iI19�i--"a ■I IIIIi11.i1111i1mms I__ '-,VAINIU1d� 5` nrimsmnn:!;;ausl 1El o- 111111II•IIIIIIil�1 mIA�S" MIA •I,III'!;'ill'dIIIIIIP 11111 III MI 2 11111111 = , .AIW� . b.1=iq .ill l/11111'illl!i11151P�111111111■■I a 11111 ► •..Sill' !:;,rll!'I!illll!111!illl!illlll 11111111111■1 [ 11111 -'rAIIIIiiI • 15=1Gil7I IIII!IIIlil11111111111111111i1i11i■I _II %%Ei�!i A ulnI�71-111" 1151111111111111111111f11111111111■I 0 v-20 I /I"1 pi,- ' 1' p' ' nnnnmm�nnnnnmm�im i0 1 - - =..'. mmm�mnnnmflimm�iln -� 11111IIIIIIIII HMV ■■ i • .� 1111111111■I 1111111111111111111111111111111 v=15 ■ .15,E ///—/�' IIII111111111111111111111111111111■1 IIIIIIIInnnnnunnllum -1 d'_.PiirnI: %f/—ram' - - IIIIIIIIIIIIIIIIIIIIIII n111111111n■l IIIIIIIIIIIIIIIIIn■■■�■y�!y I i.1!.41■■i:i�� / - - IIIIIIIIIIIIIIIIIIIIIII IIIIIIIIIIn■I 1111111111111111111111111' rin a-:�:.!• - i I"//_ 11111111111111111111111 n111111111n■l 1111111 11111111 ILL'":�• ::III ..illoniI� - 1■Mlnnnnnnn■■■iiinn■■I -- 1111111 lllll1r::nniiniiliil•�.■■Ni■■■11� 1111111111111111111111111111111111■I - n.!ll 11;pp•,.;,,....--liiliii....■ I■IM Illllliiiliiiilililllll.ililiiiii... 1111111111I[[IIIIII■IIIIIImnnnn111111■■■■■■■■■■■.. i'iiiiiiiiliiiiiiiiiiiii IMiiiiiiiil■I 0 0 — 5 10 20 30 50 100 200 300 500 1000 Discharge(ft3/sec) Curves may not be extrapolated. Figure 6-34.1 -Design of Outlet Protection From a Round Pipe Flowing Full,Minimum Tailwater Condition (Tw<0.5 Diameter) GSWCC 2016 Edition 6-210 21 ECMDS 7.0 https://ecmds.com/project/162070/channel-analysis/273023/show NORTH North American Green AMERICAN 5401 St. Wendel-Cynthiana Rd. Poseyville, Indiana 47633 GREEN Tel. 800.772.2040 >Fax 812.867.0247 www.nagreen.com ECMDS v7.0 CHANNEL ANALYSIS >>>1 Name 1 Discharge 1.7 Channel Slope 0.146 Channel Bottom Width 1 Left Side Slope 3 Right Side Slope 3 Low Flow Liner Retardence Class C 6-12 in Vegetation Type None Vegetation Density None Soil Type Sandy Loam(GM) SC250 Normal Permissible Calculated Safety Staple Phase Reach Discharge Velocity Mannings N Remarks Depth Shear Stress Shear Stress Factor Pattern SC250 Straight 1.7 cfs 4.89 ft/s 0.21 ft 0.032 3 lbs/ft2 1.93 lbs/ft2 1.55 STABLE E Unvegetated Underlying Straight 1.7 cfs 4.89 ft/s 0.21 ft 0.032 2.84 lbs/ft2 1.35 lbs/ft2 2.1 STABLE E Substrate SC250 Straight 1.7 cfs 4.21 ft/s 0.24 ft 0.04 10 lbs/ft2 2.15 lbs/ft2 4.64 STABLE E Reinforced Vegetation Underlying Straight 1.7 cfs 4.21 ft/s 0.24 ft 0.04 3 lbs/ft2 1.48 lbs/ft2 2.03 STABLE E Substrate 22 1 of 1 9/4/2024, 12:15 PM ECMDS 7.0 https://ecmds.com/project/162070/channel-analysis/273024/show NORTH North American Green AMERICAN 5401 St. Wendel-Cynthiana Rd. Poseyville, Indiana 47633 GREEN Tel. 800.772.2040 >Fax 812.867.0247 www.nagreen.com ECMDS v7.0 CHANNEL ANALYSIS >>>2 Name 2 Discharge 2.6 Channel Slope 0.1146 Channel Bottom Width 1 Left Side Slope 3 Right Side Slope 3 Low Flow Liner Retardence Class C 6-12 in Vegetation Type Mix(Sod and Bunch) Vegetation Density Very Good 80-95% Soil Type Sandy Loam(GM) SC250 Phase Reach Discharge Velocity Normal Mannings N Permissible Calculated Safety Remarks Staple Depth Shear Stress Shear Stress Factor Pattern SC250 Straight 2.6 cfs 5.03 ft/s 0.28 ft 0.033 3 lbs/ft2 2.01 lbs/ft2 1.5 STABLE E Unvegetated Underlying Straight 2.6 cfs 5.03 ft/s 0.28 ft 0.033 2.84 lbs/ft2 1.33 lbs/ft2 2.13 STABLE E Substrate SC250 Straight 2.6 cfs 4.3 ft/s 0.31 ft 0.04 10 lbs/ft2 2.23 lbs/ft2 4.49 STABLE E Reinforced Vegetation Underlying Straight 2.6 cfs 4.3 ft/s 0.31 ft 0.04 4.55 lbs/ft2 1.45 lbs/ft2 3.13 STABLE E Substrate 23 1 of 1 9/4/2024, 12:16 PM ECMDS 7.0 https://ecmds.com/project/162070/channel-analysis/273025/show NORTH North American Green AMERICAN 5401 St. Wendel-Cynthiana Rd. Poseyville, Indiana 47633 GREEN Tel. 800.772.2040 >Fax 812.867.0247 www.nagreen.com ECMDS v7.0 CHANNEL ANALYSIS >>>3 Name 3 Discharge 0.61 Channel Slope 0.149 Channel Bottom Width 1 Left Side Slope 3 Right Side Slope 3 Low Flow Liner Retardence Class C 6-12 in Vegetation Type Mix(Sod and Bunch) Vegetation Density Very Good 80-95% Soil Type Sandy Loam(GM) SC250 Phase Reach Discharge Velocity Normal Mannings N Permissible Calculated Safety Remarks Staple Depth Shear Stress Shear Stress Factor Pattern SC250 Straight 0.61 cfs 3.41 ft/s 0.13 ft 0.036 3 lbs/ft2 1.2 lbs/ft2 2.51 STABLE E Unvegetated Underlying Straight 0.61 cfs 3.41 ft/s 0.13 ft 0.036 2.84 lbs/ft2 0.91 lbs/ft2 3.11 STABLE E Substrate SC250 Straight 0.61 cfs 2.85 ft/s 0.15 ft 0.046 10 lbs/ft2 1.38 lbs/ft2 7.26 STABLE E Reinforced Vegetation Underlying Straight 0.61 cfs 2.85 ft/s 0.15 ft 0.046 6 lbs/ft2 1.03 lbs/ft2 5.84 STABLE E Substrate 24 1 of 1 9/4/2024, 12:17 PM ECMDS 7.0 https://ecmds.com/project/162070/channel-analysis/273026/show NORTH North American Green AMERICAN 5401 St. Wendel-Cynthiana Rd. Poseyville, Indiana 47633 GREEN Tel. 800.772.2040 >Fax 812.867.0247 www.nagreen.com ECMDS v7.0 CHANNEL ANALYSIS >>>4 Name 4 Discharge 0.7 Channel Slope 0.149 Channel Bottom Width 1 Left Side Slope 3 Right Side Slope 3 Low Flow Liner Retardence Class C 6-12 in Vegetation Type Mix(Sod and Bunch) Vegetation Density Very Good 80-95% Soil Type Sandy Loam(GM) SC250 Phase Reach Discharge Velocity Normal Mannings N Permissible Calculated Safety Remarks Staple Depth Shear Stress Shear Stress Factor Pattern SC250 Straight 0.7 cfs 3.6 ft/s 0.14 ft 0.035 3 lbs/ft2 1.28 lbs/ft2 2.34 STABLE E Unvegetated Underlying Straight 0.7 cfs 3.6 ft/s 0.14 ft 0.035 2.84 lbs/ft2 0.97 lbs/ft2 2.94 STABLE E Substrate SC250 Straight 0.7 cfs 3.01 ft/s 0.16 ft 0.045 10 lbs/ft2 1.47 lbs/ft2 6.82 STABLE E Reinforced Vegetation Underlying Straight 0.7 cfs 3.01 ft/s 0.16 ft 0.045 5.76 lbs/ft2 1.08 lbs/ft2 5.32 STABLE E Substrate 25 1 of 1 9/4/2024, 12:17 PM ECMDS 7.0 https://ecmds.com/project/162070/channel-analysis/273027/show NORTH North American Green AMERICAN 5401 St. Wendel-Cynthiana Rd. Poseyville, Indiana 47633 GREEN Tel. 800.772.2040 >Fax 812.867.0247 www.nagreen.com ECMDS v7.0 CHANNEL ANALYSIS >>>5 Name 5 Discharge 0.31 Channel Slope 0.1454 Channel Bottom Width 1 Left Side Slope 3 Right Side Slope 3 Low Flow Liner Retardence Class C 6-12 in Vegetation Type Mix(Sod and Bunch) Vegetation Density Very Good 80-95% Soil Type Sandy Loam(GM) SC250 Phase Reach Discharge Velocity Normal Mannings N Permissible Calculated Safety Remarks Staple Depth Shear Stress Shear Stress Factor Pattern SC250 Straight 0.31 cfs 2.63 ft/s 0.09 ft 0.038 3 lbs/ft2 0.85 lbs/ft2 3.54 STABLE E Unvegetated Underlying Straight 0.31 cfs 2.63 ft/s 0.09 ft 0.038 2.84 lbs/ft2 0.68 lbs/ft2 4.16 STABLE E Substrate SC250 Straight 0.31 cfs 2.13 ft/s 0.11 ft 0.052 10 lbs/ft2 0.99 lbs/ft2 10.1 STABLE E Reinforced Vegetation Underlying Straight 0.31 cfs 2.13 ft/s 0.11 ft 0.052 7.49 lbs/ft2 0.78 lbs/ft2 9.63 STABLE E Substrate 26 1 of 1 9/4/2024, 12:18 PM ECMDS 7.0 https://ecmds.com/project/162070/channel-analysis/273028/show NORTH North American Green AMERICAN 5401 St. Wendel-Cynthiana Rd. Poseyville, Indiana 47633 GREEN Tel. 800.772.2040 >Fax 812.867.0247 www.nagreen.com ECMDS v7.0 CHANNEL ANALYSIS >>>6 Name 6 Discharge 1.13 Channel Slope 0.116 Channel Bottom Width 1 Left Side Slope 3 Right Side Slope 3 Low Flow Liner Retardence Class C 6-12 in Vegetation Type Mix(Sod and Bunch) Vegetation Density Very Good 80-95% Soil Type Sandy Loam(GM) SC250 Phase Reach Discharge Velocity Normal Mannings N Permissible Calculated Safety Remarks Staple Depth Shear Stress Shear Stress Factor Pattern SC250 Straight 1.13 cfs 3.79 ft/s 0.19 ft 0.035 3 lbs/ft2 1.37 lbs/ft2 2.19 STABLE E Unvegetated Underlying Straight 1.13 cfs 3.79 ft/s 0.19 ft 0.035 2.84 lbs/ft2 0.98 lbs/ft2 2.9 STABLE E Substrate SC250 Straight 1.13 cfs 3.17 ft/s 0.22 ft 0.045 10 lbs/ft2 1.57 lbs/ft2 6.38 STABLE E Reinforced Vegetation Underlying Straight 1.13 cfs 3.17 ft/s 0.22 ft 0.045 5.72 lbs/ft2 1.09 lbs/ft2 5.24 STABLE E Substrate 27 1 of 1 9/4/2024, 12:18 PM