Sedimentation Basin Volume- 1
CONE EQUATION
V = H/3 (A1 + A2 + (A1*A2)^0.5)
Sedimentation Basin Volume
Elev. (ft)
Planimeter
Area
(sq ft)
(acres)
A1+A2+(A1*A2)^0.5
(acres)
721.50
5.00
0.00
0.00
722.00
2534.00
0.06
0.06
Volume
Incremental
Total
(cu-ft)
Volume
Volume
cu-ft
acre-ft
441.93
441.93
0.010
723.00
4173.00
0.10
0.23
3,319.61
3,761.54
0.086
724.00
5460.00
0.13
0.33
4,802.11
8,563.64
0.197
725.00
6848.00
0.16
0.42
6,140.91
14,704.56
0.338
726.00
8336.70
0.19
0.47
7,580.16
22,284.71
0.512
VOLUME PROVIDED @ 724.4565
Required Sedimentation Basin Volume
0.266
= 3,600 (cu.ft/acre) x Drainage Area (acres)
= 3,600 x (3.13468)
=11,284.85 cu.ft = 0.259 acre.ft
Sedimentation Basin Volume- 2
CONE EQUATION
V = H/3 (A1 + A2 + (A1*A2)^0.5)
Sedimentation Basin Volume
Elev. (ft)
Planimeter
Area
(sq ft)
(acres)
A1+A2+(A1*A2)^0.5
(acres)
Volume
Incremental
Total
(cu-ft)
Volume
Volume
cu-ft
acre-ft
724.50
0.00
0.00
0.00
-
725.00
352.00
0.01
0.01
58.67
58.67
0.001
726.00
2276.00
0.05
0.05
1,174.36
1,233.02
0.028
727.00
3136.00
0.07
0.19
2,694.54
3,927.56
0.090
728.00
4095.00
0.09
0.25
3,604.85
7,532.42
0.173
729.00
5156.00
0.12
0.32
4,615.33
12,147.74
0.279
730.00
6316.00
0.14
0.39
5,726.20
17,873.94
0.410
VOLUME PROVIDED @728.178
Required Sedimentation Basin Volume
= 3,600 (cu.ft/acre) x Drainage Area (acres)
= 3,600 x (2.1328)
= 7,678.08 cu.ft = 0.176 acre.ft
0.189