1300 A.D., the great exodus of the Kohalis began in right earnest. They were awarded large farming tracts as incentives, for constructing tanks, canals and waste weirs for storage and supply of water. They were also conferred with the title of 'PATEL' or PATIL'. As the zamindari and malguzari system was not in vogue, these Patels/Patils were entrusted with the job of collecting agricultural cess. Agricultural development being the main item on the agenda of the queen, two brothers viz. Kolhu and Chimna Patil of the Kohali community, were delegated with the task of constructing a lake (at Navegaon) in the year 1300. From here begins the saga of Madhaorao Patil's ancestors Kolhu & Chimna, scions of Bija Patil Dongarwar. This diligent brother-duo, first made alternate arrangements to resettle the displaced inhabitants of 12 villages, that were going to be affected by the construction of lake and that is today's Navegaon village. Hundreds of labourers were employed in construction of the lake and dam-wall. Mode of payment to labourers was in the form of conches and mollusc shells. Herds of cattle were pressed into service, to trample the freshy excavated and water-sprinkled soil dumped for the dam-wall, to provide solidity. Water stored in the reservoir, would be provided free of cost to all farmers. After completing the dam, to express their gratitude to God, a fish of the ‘Wadis’ species was caught and adored with 30 Tolas of Gold ornaments and again released in the tank. This fish was reported to be sighted for several years, resplendent in all its ornaments. While constructing the dam, a temple of God Hanuman was simultaneously constructed. Here, the lookers on the construction site, first paid obeisance daily, before commencing the work. For accumulation of water, a 200-yard sloping waste weir was built which also facilitate Eel fish from the back-waters of the sea to enter the lake by rivulets for spawning. The Govt took over the management of this dam in 1951. They dismantled this waste-weir and reconstructed another waste-weir in the form of water-fall. Kolhu and Chimna Patil had 7 sisters, and in their love for them, constructed a tank bund and named it as “Sat-Bahini” or dam of seven sisters. Kolhu Patil was childless and to keep alive his memory and as a tribute, the hillock within the dam was named as “Kolhasur” or Kolhu Patil lake. Eleventh line generation of