Download PONDS Version 2.26 Users Manual.

PONDS USER MANUAL
9.2
9-2
LIST OF INPUT PARAMETERS
PARAMETER DESCRIPTION
SYMBOL
Pond & Stormwater Volume Parameters
Treatment Volume, PAV (cubic feet):
Area at Top of Pond, ATOP (square feet):
Vertical Distance From Natural Ground or Finished Grade to Pond Bottom (ft)
PAV
ATOP
d
Aquifer Parameters
Hydraulic Conductivity of Soil, K (ft/day):
Depth to Base of Aquifer From Pond Bottom, B (ft):
K
B
Drain Parameters
Drain diameter, D (inch)
Thickness of gravel envelope above pipe, t (inch)
Depth of soil cover on underdrain, H (ft)
D
t
H
Design Criteria
Recovery Time, T (day):
Factor of Safety, FS (dimensionless):
Minimum distance between water table mound and pond bottom, R (ft)
T
FS
R
Background Seepage
Ground water baseflow into underdrained pond, qb (gpm)
qb
Parameters to Compute Minimum Diameters of Lateral Drain and Main Drain
Manning's "n" Value For Lateral Drain Pipe (dimensionless)
Slope of Lateral Drains, I1 (%)
Maximum Length of Single Lateral Drain, l (ft)
Manning's "n" Value For Main Drain Pipe (dimensionless)
Slope of Main Drain, I2 (%)
Percent of Total Length of Laterals Connected To Main Drain, P (%)
n1
i1
l
n2
i2
P
August 7, 1995