SW6240606_Design Calculations (Swales)_20240830 (2)

NORTH North American Green
AMERICAN 5401 St. Wendel-Cynthiana Rd.
Poseyville, Indiana 47633
GREEN Tel. [phone]
>Fax [phone]
www.nagreen.com
ECMDS v7.0
CHANNEL ANALYSIS
>>>DITCH 1
Name DITCH 1
Discharge 2.47
Channel Slope 0.014
Channel Bottom Width 2
Left Side Slope 3
Right Side Slope 3
Low Flow Liner
Retardence Class D 2-6 in
Vegetation Type Bunch Type
Vegetation Density Fair 50-64%
Soil Type Sandy Loam(GM)
Unreinforced Vegetation
Normal Permissible Calculated Safety Staple
Phase Reach Discharge Velocity Mannings N Remarks
Depth Shear Stress Shear Stress Factor Pattern
Unreinforced Straight 2.47 cfs 1.57 ft/s 0.46 ft 0.052 4 lbs/ft2 0.41 lbs/ft2 9.88 STABLE
Vegetation
Underlying Straight 2.47 cfs 1.57 ft/s 0.46 ft 0.052 2.01 lbs/ft2 0.28 lbs/ft2 7.22 STABLE
Substrate

NORTH North American Green
AMERICAN 5401 St. Wendel-Cynthiana Rd.
Poseyville, Indiana 47633
GREEN Tel. [phone]
>Fax [phone]
www.nagreen.com
ECMDS v7.0
CHANNEL ANALYSIS
>>>DITCH 2
Name DITCH 2
Discharge 4.79
Channel Slope 0.01
Channel Bottom Width 2
Left Side Slope 3
Right Side Slope 3
Low Flow Liner
Retardence Class D 2-6 in
Vegetation Type Bunch Type
Vegetation Density Fair 50-64%
Soil Type Sandy Loam(GM)
Unreinforced Vegetation
Normal Permissible Calculated Safety Staple
Phase Reach Discharge Velocity Mannings N Remarks
Depth Shear Stress Shear Stress Factor Pattern
Unreinforced Straight 4.79 cfs 1.66 ft/s 0.7 ft 0.052 4 lbs/ft2 0.44 lbs/ft2 9.15 STABLE --
Vegetation
Underlying Straight 4.79 cfs 1.66 ft/s 0.7 ft 0.052 2.01 lbs/ft2 0.28 lbs/ft2 7.2 STABLE
Substrate

NORTH North American Green
AMERICAN 5401 St. Wendel-Cynthiana Rd.
Poseyville, Indiana 47633
GREEN Tel. [phone]
>Fax [phone]
www.nagreen.com
ECMDS v7.0
CHANNEL ANALYSIS
>>>DITCH 3
Name DITCH 3
Discharge 2.18
Channel Slope 0.01
Channel Bottom Width 2
Left Side Slope 3
Right Side Slope 3
Low Flow Liner
Retardence Class D 2-6 in
Vegetation Type Bunch Type
Vegetation Density Fair 50-64%
Soil Type Sandy Loam(GM)
Unreinforced Vegetation
Normal Permissible Calculated Safety Staple
Phase Reach Discharge Velocity Mannings N Remarks
Depth Shear Stress Shear Stress Factor Pattern
Unreinforced Straight 2.18 cfs 1.24 ft/s 0.5 ft 0.058 4 lbs/ft2 0.31 lbs/ft2 12.79 STABLE
Vegetation
Underlying Straight 2.18 cfs 1.24 ft/s 0.5 ft 0.058 2.5 lbs/ft2 0.21 lbs/ft2 11.79 STABLE
Substrate

NORTH North American Green
AMERICAN 5401 St. Wendel-Cynthiana Rd.
Poseyville, Indiana 47633
GREEN Tel. [phone]
>Fax [phone]
www.nagreen.com
ECMDS v7.0
CHANNEL ANALYSIS
>>>DITCH 4
Name DITCH 4
Discharge 5.51
Channel Slope 0.01
Channel Bottom Width 2
Left Side Slope 3
Right Side Slope 3
Low Flow Liner
Retardence Class D 2-6 in
Vegetation Type Bunch Type
Vegetation Density Fair 50-64%
Soil Type Sandy Loam(GM)
Unreinforced Vegetation
Normal Permissible Calculated Safety Staple
Phase Reach Discharge Velocity Mannings N Remarks
Depth Shear Stress Shear Stress Factor Pattern
Unreinforced Straight 5.51 cfs 1.75 ft/s 0.74 ft 0.051 4 lbs/ft2 0.46 lbs/ft2 8.62 STABLE
Vegetation
Underlying Straight 5.51 cfs 1.75 ft/s 0.74 ft 0.051 1.93 lbs/ft2 0.29 lbs/ft2 6.59 STABLE
Substrate

NORTH North American Green
AMERICAN 5401 St. Wendel-Cynthiana Rd.
Poseyville, Indiana 47633
GREEN Tel. [phone]
>Fax [phone]
www.nagreen.com
ECMDS v7.0
CHANNEL ANALYSIS
>>>DITCH 5
Name DITCH 5
Discharge 4.6
Channel Slope 0.014
Channel Bottom Width 2
Left Side Slope 3
Right Side Slope 3
Low Flow Liner
Retardence Class D 2-6 in
Vegetation Type Bunch Type
Vegetation Density Fair 50-64%
Soil Type Sandy Loam(GM)
Unreinforced Vegetation
Normal Permissible Calculated Safety Staple
Phase Reach Discharge Velocity Mannings N Remarks
Depth Shear Stress Shear Stress Factor Pattern
Unreinforced Straight 4.6 cfs 1.98 ft/s 0.61 ft 0.048 4 lbs/ft2 0.53 lbs/ft2 7.55 STABLE
Vegetation
Underlying Straight 4.6 cfs 1.98 ft/s 0.61 ft 0.048 1.69 lbs/ft2 0.35 lbs/ft2 4.86 STABLE
Substrate

NORTH North American Green
AMERICAN 5401 St. Wendel-Cynthiana Rd.
Poseyville, Indiana 47633
GREEN Tel. [phone]
>Fax [phone]
www.nagreen.com
ECMDS v7.0
CHANNEL ANALYSIS
>>>DITCH 6
Name DITCH 6
Discharge 4.56
Channel Slope 0.01
Channel Bottom Width 2
Left Side Slope 3
Right Side Slope 3
Low Flow Liner
Retardence Class D 2-6 in
Vegetation Type Bunch Type
Vegetation Density Fair 50-64%
Soil Type Sandy Loam(GM)
Unreinforced Vegetation
Normal Permissible Calculated Safety Staple
Phase Reach Discharge Velocity Mannings N Remarks
Depth Shear Stress Shear Stress Factor Pattern
Unreinforced Straight 4.56 cfs 1.64 ft/s 0.69 ft 0.053 4 lbs/ft2 0.43 lbs/ft2 9.34 STABLE
Vegetation
Underlying Straight 4.56 cfs 1.64 ft/s 0.69 ft 0.053 2.03 lbs/ft2 0.27 lbs/ft2 7.42 STABLE
Substrate

NORTH North American Green
AMERICAN 5401 St. Wendel-Cynthiana Rd.
Poseyville, Indiana 47633
GREEN Tel. [phone]
>Fax [phone]
www.nagreen.com
ECMDS v7.0
CHANNEL ANALYSIS
>>>DITCH 7
Name DITCH 7
Discharge 8.53
Channel Slope 0.01
Channel Bottom Width 2
Left Side Slope 3
Right Side Slope 3
Low Flow Liner
Retardence Class D 2-6 in
Vegetation Type Bunch Type
Vegetation Density Fair 50-64%
Soil Type Sandy Loam(GM)
Rock Riprap
Normal Permissible Calculated Safety Staple
Phase Reach Discharge Velocity Mannings N Remarks
Depth Shear Stress Shear Stress Factor Pattern
Rock Riprap Straight 8.53 cfs 1.99 ft/s 0.91 ft 0.05 2.67 lbs/ft2 0.35 lbs/ft2 7.72 STABLE --
Unvegetated
S75
Normal Permissible Calculated Safety Staple
Phase Reach Discharge Velocity Depth Mannings N Shear Stress Shear Stress Factor Remarks Pattern
S75 Unvegetated Straight 8.53 cfs 2.59 ft/s 0.77 ft 0.035 1.6 lbs/ft2 0.48 lbs/ft2 3.35 STABLE D
Underlying Straight 8.53 cfs 2.59 ft/s 0.77 ft 0.035 1.51 lbs/ft2 0.3 lbs/ft2 5.05 STABLE D
Substrate
Unreinforced Vegetation
Normal Permissible Calculated Safety Staple
Phase Reach Discharge Velocity Remarks
Depth Mannings N Shear Stress Shear Stress Factor Pattern
Unreinforced Straight 8.53 cfs 2.06 ft/s 0.89 ft 0.048 4 lbs/ft2 0.56 lbs/ft2 7.21 STABLE --
Vegetation
Underlying Straight 8.53 cfs 2.06 ft/s 0.89 ft 0.048 1.71 lbs/ft2 0.34 lbs/ft2 5.04 STABLE --
Substrate

NORTH North American Green
AMERICAN 5401 St. Wendel-Cynthiana Rd.
Poseyville, Indiana 47633
GREEN Tel. [phone]
>Fax [phone]
www.nagreen.com
ECMDS v7.0
SLOPE ANALYSIS
>>>3:125'
Country United States
State/Region North Carolina
City Fayetteville
Annual R Factor 300.00
Adjusted R Factor 246.00
Total Slope Length 25
Protection Type Permanent
Protection Period 9
Beginning Month June
Slope Gradient(H:1) 3
Soil Type Sandy Loam
K Factor 0.19
Reach 1
Start: Oft End: 25 ft
Vegetation Type: 80-95%
Material ASL bare ASL mat MSL bare MSL mat Soil Loss SF Remarks Staple/App
Tolerance Rate
S75 0.5 in 0.0 in 0.9 in 0.0 in 0.25 in 7.055 STABLE D
S200 0.5 in 0.0 in 0.9 in 0.0 in 0.25 in >10 STABLE D
Estb. Veg. 0.9 in 0.0 in N/A in N/A in 0.03 in 0.894 UNSTABLE --

NORTH North American Green
AMERICAN 5401 St. Wendel-Cynthiana Rd.
Poseyville, Indiana 47633
GREEN Tel. [phone]
>Fax [phone]
www.nagreen.com
ECMDS v7.0
CHANNEL ANALYSIS
>>>Steep lot swale
Name Steep lot swale
Discharge 0.5
Channel Slope 0.08
Channel Bottom Width 0
Left Side Slope 3
Right Side Slope 3
Low Flow Liner
Retardence Class D 2-6 in
Vegetation Type Bunch Type
Vegetation Density Fair 50-64%
Soil Type Sandy Loam(GM)
Unreinforced Vegetation
Normal Permissible Calculated Safety Staple
Phase Reach Discharge Velocity Mannings N Remarks
Depth Shear Stress Shear Stress Factor Pattern
Unreinforced Straight 0.5 cfs 2.62 ft/s 0.25 ft 0.039 4 lbs/ft2 1.24 lbs/ft2 3.22 STABLE --
Vegetation
Underlying Straight 0.5 cfs 2.62 ft/s 0.25 ft 0.039 1.1 lbs/ft2 0.59 lbs/ft2 1.87 STABLE
Substrate