80 HALIFAX WATER WORKS. JOHNSTON. 



the capacity of the reservoir would be 586,000,000 gallons or 

 117 days full supply for the city. But as the mills on the 

 stream would require the whole natural flow through the sum- 

 mer and autumn, it would be necessary to purchase their 

 rights, or there would be available for the city's use but forty- 

 six days supply. The cost of bringing water from these lakes, 

 including $40,000 for land and compensation and $30,000 for 

 reservoir on Shaffroth's Hill, would be $353,980. 



3rd. High service, Kagged Lake. This lake lies about 21/4 

 miles westerly from the gate-house at Chain Lake, and contains 

 about 100 acres of water area at an elevation of 325 feet above 

 tide. Lying at the summit level of the country, it has a limited 

 water-shed (less than 300 acres by a later survey) and would 

 not be a suitable source to furnish the quantity required. The 

 estimated cost of obtaining a supply from this source, exclus- 

 ive of the distribution, was $55,030. 



4th. Pumping by steam power to Shaffroth's Hill. The 

 most convenient station for pumps would be near St. Andrew's 

 Cross, and the costt, including the annual working expenses 

 capitalized at 6 per cent, would be $99,000. Another scheme 

 was suggested to use the stream running from, the Chain 

 Lakes to Hosterman's mill to pump into a ktand pipe, and 

 thence by gravity to a reservoir on Shaffroth's Hill. The first 

 cost would not be very different from pumping by steam, but 

 the operating expenses would be less. The practicability of the 

 pla'n depended on the amount of water running from Chain 

 Lakes in a dry time, the amount required to operate the pump 

 being about 4^ million gallons per day. In summing up, Mr. 

 Laurie recommended that Long Lake dam be raised and a 24- 

 inch main be substituted for the 12-inch from the lakes to St. 

 Andrew's Cross, as the whole of the city, with the exception of 

 the district lying to the north and west of Gerrish and Creigh- 

 ton Streets, could be supplied by gravitation. This district 

 would have to be supplied either by bringing; water from a 



