
Built between the she-oak hill on one side and the hill of the large keyhole circle on the other side, the biggest of the dams, the Gully Dam (above photo), is purely practical in that it will allow for a good sized garden and small orchard as well as instantaneous bush fire protection through a gravity fed system of sprinklers on the roof and hoses on the ground. Because both the hills had exposed dolerite outcrops dropping down their sides going into the gully, there was every chance that all we would hit when digging started was more rock or gravel (meaning no dam). But.... we hit a good seam of clay and were able to create a waterproof dam 100 feet (30 meters) long,16 feet (5 meters) at its deepest point and 75 feet (22 meters) wide along the Gully Dam's dam wall. Not only was it a joy to know that Windgrove's future water needs would be met, it was also a joy to see how Andrew, the operator of this massive, earth moving machine, could handle it with such skilful sensitivity and grace. There is still a lot of work to be done in the digging of a quarter mile long trench and the laying of two sets of pipes (fire/garden water and drinking water) as well as all the junctures and multiple fittings, but the really big work has been accomplished and for this I am happy.
Posted by Peter Adams at 06:26 AM. Filed under: Things Built •
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