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.

Table showing the height of water, etc. - Continued.

YEAR.

Annual Amount of Rainfall, in Inches, at Lake Cochituate, Boston and vicinity, 1849 to 1874, inclusive.

Providence, by A. Caswell.

Table showing the Rainfall in Boston for the year 1874, and the
days on which it occurred, from observations by Wm.
Wm. H. Bradley,
Esq., Superintendent of Sewers.

Days of
Month.

1.

2..

une.

Jan. Feb. Mar. Apr. May. June. July. Aug. Sept. Oct. Nov. Dec.

.84

10.

11.

12.

13.

.64

1.98

.05

4.

5..

.72