June 1912
U.S.Department of Agriculture
Office of Experiment Stations
DRAINAGE INVESTIGATIONS
wettest year 1889 . . . .72.02 inches
Dryest " 1876 . . . .27.65 "
Wettest month, July 1889 . .14.01 "
Dryest " , October 1874 . 0.11 "
" , November 1890
Heaviest rainfall in 24 hours, Apr. 17-18, 1910 . . 5.33 "
Heaviest rainfall in short period(46 minutes)
August 19, 1908 . . . .2.88 ins.
Average annual snowfall . . . . 16.80 '
Highest temperature, August 11, 1900 . . . 102 degrees
Lowest temperature, February 10, 1899 . . -3 "
Latest date of killing frost in spring . . April 20
Average date of killing frost in spring . . April 2
Earliest date of first killing frost in autumn . .October 12
Average date of first killing frost in autumn . . November 3
Maximum wind velocity, 61 miles per hour . . . February 10/09
- A REPORT UPON THE DRAINAGE OF THE LOWLANDS OF THE CHICKAHOMINY RIVER
(HANOVER, HENRICO, NEW KENT and CHARLES CITY COUNTIES, VA.
by George M. Warren, Drainage Engineer,
Assisted by John R. Haswell, Assistant Drainage Engineer,
and Newton B. Wade, Assistant Drainage Engineer
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