ENPages
p. 106
103
Daily average amount of evaporation from the surface of exposed water during the same months (June, Jy, Aug, & Sept.) 1867 same for a series of years showing that during the time while the rain was so small in amount, the evaporation was increased one fourth. The diminution of the amount of rain & increase of evaporation sufficiently accounts for the very small quantity of water flowing in the river. [see next page]. [calculations].
At West Bend & Barton in Washington Co. the Milwaukee river is lower than was ever known before, affording scarcely water enough for two runs of stones t those places. Oct. 27. 1867 At these places there is usually an abundance of water in March April May June November & December-
The supply is scant in the months of January, February, July & October & Very Deficient in August & September.
p. 107
104
Nov. 1st 1867
The dry weather and low water has continued through the month of October during which month the rain was only 0.80 making river June 1st. Same time last year 1866 18.82 showing considerably less than half as much this year as last, during the 5 months. Average amount for same months for 24 years. Being 60 pr ct. more than in 1867
[calculations]
During the same 5 months of 1867 (June-October) the evaporation from the surface of an exposed bason of water was [10.94] Evaporation more than 3 times the rain fall! Annual Arn't for same months for 6 years The Being 1/5 more evaporation in 1867 than the usual average!
[Calculations and Graph].
p. 108
105
December 24th 1867 Levels of weirs at the several mills
[List of data]
No others running.
p. 109
106
[Table and Calculations] Minimum discharge of the Milwaukee river (p.102)
Equivalent to the power of 102 Horses
p. 110
107 Table of Water Levels Continued from page 41
Chicago 1855 to 1869 See 4th Ref. Pub. Works p. 60
