New Watervliet Water Works Plant
The president of the Watervliet, N. Y., Water Board, John G. Clute, has filed with the Conservation Commission an amended application for new water works for the city in the towns of Guilderland and Colonie, and using the Normanskill at French Mills. The amended plan shows that the first requirement that the marginal strip of land around the storage reservoir should be increased has been done by the addition of 200 acres, which makes the strip 150 feet wide around th entire reservoir. The second requirement was the fencing in of the reservoir and this has been cared for. It was also required that the dam be provided with an apron. The gorge at French Mills has been explored and a large number of test pits sunk to definitely locate the rock foundation. After careful study it was found that the dam could be advantageously built by moving the proposed site 650 feet down stream. The dam will be of reinforced concrete throughout and the spillway capacity demanded by the state commission will be provided. Inasmuch as the dam site has been moved down stream 650 feet, the power house site has been changed to a corresponding position, which will mean a six feet increase in head. The pumping station plans have been enlarged to accommodate the installation of additional equipment if the demand on the supply should so require. Additions to the supply main were also taken care of by the proposed erection of four elevated tanks and surge pipes located at control points. In the elevation of the service reservoir, the engineers have moved the proposed site back to a higher plateau and obtaining an available head on Broadway of 27 feet. The capacity of this reservoir was increased from ten to fifteen million gallons, providing for practically seven days’ storage at the present rate of supply. The plans also provide for a filter and aeration plant. The filter will cost about $50,000. The head necessary for the spraying of the water in the aeration process will be furnished from the service reservoir which is located forty feet higher. A clear water well will give 200 feet head above Broadway, and from it an eighteen-inch cast iron main will lead directly to the distribution system. The additional work required by the commission will entail an extra expenditure of $125,000.