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Odisha to implement innovated model for sub-surface water recharge

 

Posted on Saturday May 17, 2014

Last updated Wednesday July 06, 2016

  Odisha, Drought, Water recharge, Climate change, Agriculture

Odisha is implementing ground water recharge model in the state as part of its Climate Change Action Plan. The recent model is an innovation by group of retired engineers from Odisha, which will facilitate subsurface recharge through rain water harvest management.

HNF Correspondent
 

As another step in direction of combating climate change, Odisha is implementing ground water recharge model in the state as part of its Climate Change Action Plan.

The recent model is an innovation by group of retired engineers from Odisha, which will facilitate subsurface recharge through rain water harvest management. This new model is proved successful in 10 blocks of 6 districts of the state.

Odisha government has ordered for implementation of the recharging model after a presentation about the techniques and its application before the Chief Secretary of Odisha, Jugal Kishore Mohapatra, by the group of innovator engineers led by Banamali Naik.

Satisfied with the outcomes of the model in the pilot blocks, Mohapatra advised to replicate it in about 50 drought prone blocks, this year.

As it requires intensive awareness of people and training of the implementing engineers for successful implementation of the model, the department of water resource and the Watershed Development Mission are advised to take up intensive awareness activities on the value of rain water and benefits of harvesting it at subsurface level.

While Odisha Watershed Development Mission is given the responsibility to coordinate and monitor the replication programme, the CS emphasised on training of the engineers through direct field exposure.

As per the engineers involved in the innovation, “surface storage of rain water, though helpful for ground water recharge, has certain limitations. Sufficient water cannot be stored in a surface reservoir to support cropping over a significantly large area.”

In view of this, the experts said that a 20 hectare Water Harvesting Structure (WHS) can at best hold maximum 17% runoff water from a watershed area of 500 hectares. Surface storage of water also affects ground water recharge because the reservoirs get silted up in course of time and prevent significant seepage down to the subsoil.

The technique, suggested by the group of engineers, of storing water at subsurface level will recharge the soil within 10 meters of surface level, which can meet the water requirements of vegetation and, even, keep the wells and canals recharged while adding moisture to the soil.

This low cost technology can be implemented with an investment between Rs.15,000 and Rs.20,000 per hectare.

The technology, already piloted in several forested and hilly blocks with help of government agencies like Western Odisha Development Council, Western Odisha Rural Livelihood Project, Integrated Watershed Management Project and Chilika Development Authority, has yielded targeted benefits. NABARD and a few corporate agencies have also facilitated application of the technique in various places of Keonjhar, Mayurbhanj, Gajpati and Ganjam districts.

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