Cong. disputes Karnataka's claim: Three Congress(I) MLAs - Mr J.C. Diwakar Reddy, Mr. Gali Muddukrishnama Naidu and Mr. E. Pratap Reddy - have taken exception to the claim of the Karnataka Chief Minister, Mr. J.H. Patel, that permission from the Central Government was obtained for the Alamatti dam upto a height of 519 ft and for raising it further to 524 ft for the purpose of power generation.