Accepted Papers - 3.pdf - UNESCO

Table 5. Monthly reference
evapotranspiration (E T 0 ).
Month ET0 (mm/d)
Month ET0 (mm/d)
January 1.37 July 3.92
February 1.86 August 2.62
March 3.09 September 2.84
April 3.98 October 3.37
May 4.85 November 2.01
June 4.42 December 1.53
Design of Water Harvesting System for Henwal
Watershed
The geometrical relationships and classical
optimization techniques with an objective function
of maximizing the storage capacity of the pond,
satisfying the given constraints that the volume of
excavated earth equals the volume of fill required
for embankment were used for design of pond.
Pond design and regression analysis
The relationships of bed width (X), vs
storage capacity (V SC ), and bed width vs height of
embankment (H), were established for c = 1 (square
pond) and Z = 1 :1.5 for medium soil fitting to
polynomial and Weebull equations, respectively.
The relationship of bed width (X) Vs storage
capacity (V sc ) as as follows:
The relationship of height of embankment
versus bed width may be written as
Pond design and cost estimates based on runoff
recycle
The pond was designed for a catchment
area of 351 ha and command area of 315 ha. The
bottom length, top length and height was 2.5, 16.6
and 3 m, respectively. The pond had a storage
capacity of 5027.4 m 3 , the total cost (excavation
cost, LDPE sheet and stone pitching) of pond was
estimated to be Rs. 146689.125 and the cost per
m 3 of stored water comes to be Rs. 29/m 3 .
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