16,459,544,000 5,405,515,000 2,507,684,000 7,913,199,000 5,223,500,000 7,620,203,000 20,877,300 24,423,760 60 60 per cent. Average. 51.05 Average daily waste for 20 years . 7,460,600 Average daily yield of Lake water-shed for 20 years, 21,244,280. 45 per cent. " 6 years, '52-59. 14,378,900 '' * Observations of Rainfall at Lake Cochituate commenced 1852, and these observations are assumed as correct for the whole district. † Lake raised two feet. “last 14 years, '60–73. 4,496,600 ‡ "last 14 years, '60–73. 4,496,600 Amount received from Sudbury River in 1872, 1,676,666,400 gallons. Table of the average monthly and yearly heights of water in the Lake above the bottom of the Aqueduct. High-water mark raised two feet. Table showing the height of water in the conduit at the gate-house, Lake Cochituate, the number of days it was running at those depths, and the average depth for each month. |