6 days ago
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More than 50% of the retention capableness of the 100-ft Pillur Dam has been mislaid to silt accumulation implicit the decades, portion seepage astatine the Siruvani Reservoir continues to effect successful h2o loss, posing a situation to Coimbatore’s drinking h2o supply.
Corporation Commissioner M. Sivaguru Prabakaran said the Pillur and Siruvani schemes signifier the backbone of Coimbatore’s drinking h2o web and immoderate simplification successful retention oregon drawal capableness would straight impact h2o organisation successful the city.
Around 754 MLD of h2o is drawn from River Bhavani done 14 drinking h2o schemes catering to Coimbatore and Tiruppur districts. Of this, Coimbatore metropolis unsocial draws astir 277 MLD done 3 Pillur-based drinking h2o schemes located successful the upstream and downstream stretches of the dam.
Mr. Prabakaran said seepage successful the Siruvani Reservoir remained a concern, with astir 10 MLD of h2o being mislaid each time during the monsoon season. At afloat retention level, the reservoir supplies adjacent to 100 MLD to conscionable the city’s drinking h2o requirements, with drawal declining arsenic retention levels recede.
He said the Corporation had fixed caller impetus to desilting works astatine the Pillur dam, wherever astir 58% of the retention capableness was mislaid to silt accumulation, and to seepage rectification works astatine the Siruvani reservoir, and had urged the State authorities to convene a associated gathering of the departments acrophobic to coordinate further enactment connected the projects.
The Commissioner said contiguous involution was indispensable arsenic silt accumulation astatine Pillur, seepage astatine Siruvani and declining retention levels posed a menace to Coimbatore’s drinking h2o supply, which is heavy babelike connected the 2 reservoirs.
He said the Kerala authorities was yet to accord last support for the Siruvani repair works, pursuing which the methodology for plugging seepage points would beryllium finalised and implemented.
The Siruvani reservoir has a water-holding capableness of 49.53 ft. In 2014, the Kerala Irrigation Department raised concerns implicit dam safety, pursuing which the permissible retention level was reduced to 44.61 ft from the Full Reservoir Level of 49.53 ft.
Mr. Prabakaran said the Water Resources Department had besides projected operation of different dam astir 6 km downstream of the Pillur dam astatine a tract with amended retention potential. The connection is successful the preliminary stage.
