Thank you a lot, Dr. Yugandhar, The information is helpful. Just to clarify, I used the generic term of water harvesting structure because since we work on a watershed concept we have a whole lot of structures ranging from the contours to large water harvesting structures. We do have the basic dimensions (3D) of the water harvesting structures to calculate the storage potential. We have been using thumb rules for calculating the multiple refill for the structures based on rainfall pattern - like one refill for more than 20 mm rains for area treatment measures like trenches, bunding, gully plugs etc. and 5 refill a year for rainfall from 500-800 mm rains and 7-9 refills for rainfall above 800 mm. We understand that recharge is a factor of infiltration/ percolation rate, type of soil, type of rocks, slope, etc. We wanted to know if there are certain established processes for us to calculate the refill. We would be OK with collating information required for the same. Seeking your response.
Published by Subrata Singh, General Manager (Programs) at Foundation for Ecological Security
Thank you a lot, Dr. Yugandhar,
The information is helpful. Just to clarify, I used the generic term of water harvesting structure because since we work on a watershed concept we have a whole lot of structures ranging from the contours to large water harvesting structures.
We do have the basic dimensions (3D) of the water harvesting structures to calculate the storage potential. We have been using thumb rules for calculating the multiple refill for the structures based on rainfall pattern - like one refill for more than 20 mm rains for area treatment measures like trenches, bunding, gully plugs etc. and 5 refill a year for rainfall from 500-800 mm rains and 7-9 refills for rainfall above 800 mm.
We understand that recharge is a factor of infiltration/ percolation rate, type of soil, type of rocks, slope, etc.
We wanted to know if there are certain established processes for us to calculate the refill. We would be OK with collating information required for the same.
Seeking your response.
The information is helpful. Just to clarify, I used the generic term of water harvesting structure because since we work on a watershed concept we have a whole lot of structures ranging from the contours to large water harvesting structures.
We do have the basic dimensions (3D) of the water harvesting structures to calculate the storage potential. We have been using thumb rules for calculating the multiple refill for the structures based on rainfall pattern - like one refill for more than 20 mm rains for area treatment measures like trenches, bunding, gully plugs etc. and 5 refill a year for rainfall from 500-800 mm rains and 7-9 refills for rainfall above 800 mm.
We understand that recharge is a factor of infiltration/ percolation rate, type of soil, type of rocks, slope, etc.
We wanted to know if there are certain established processes for us to calculate the refill. We would be OK with collating information required for the same.
Seeking your response.