Evening journal., 1906-11-27
Mr.. LESSEN
AND Ills VIEWS
CcontInaed From FIrst rage.l

dam. between the south long race ana
creek Second, a small piece Of land
at the north end OF the third dam, and.
fourth, a tract OF land at the south end
of the third dam, the total area OF the
land to be conveyed being slightly over
eight acres.
In addition to the real estate. the
transfer would convey all interest ir
the water rights In the race or creek
below the rights owned and CONTROLLED
by the Jessup and Moore Company anc
the Joseph Bancroft and Sons Com
pany.
Importance Of Deal
The acquisition by the city Of the full
rights and interests along the Brandy
wine at the points mentioned would
be OF considerable Importance at The
several points Of view: IL would OBJ
viate the possibility OF friction to any
of the city departments in crossing
the races or creek, or In utilizing any
portions thereof for structures neces~
sary for civiv betterments; II would
insure TO the city the absolute right 20
utilize an Of the water flowing down
the stream untrammeled by any re-
strictions or conditions, and would give
10 the city the power TO demand and
enforce the full observance OF the laws
governing riparian owners farther %
the stream. and II would add 20 the
park system certain tracts OF lane
which are absolutely necessary Tor irs
proper development and preservation.
The interest OF this department., how
ever centres on the direct value oh
tained from the full utilization OF the
water rights and power 20 be deve'-
oped therefrom. .
The data available in relation 20 the
! fpW OF the Brandywine. while not as
complete as might be desirable, furnish
sufficient evidence TO deduce an op-
lproximate result as to the amount OF
power which IL would be possible "a
develop. and with view TO establish
ling this result the following observa-
tions are herein recorded:
The United States Government engi.
neers, 10y a series OF observations COW
erng a period Of 1O3 days in the fal
Of 1894, show an average daily flow o.
100000 600 gallons. including freshets
and eliminating this extreme freshe
flow, the medium daily average wal
found to BE 2S0OO0,0 600. This amour
would unquestionably be in excess o
the average for the entire year.
Taking the drainage area OF tn
Brandywine watershed as 800 sQuar
miles. the annual rainfall as As inches
and assuming 90 per cent. run Off, III
total average floyw. including freshe.s
would be 265 100000 Basing the result
on data cttainable from streams OF
similar nature. Richard A. Hale esti
mated 1866 eu. n. per second per squar
lmile. as the total flow. and 0.20 Gu. q
per second per square mile as the mini
mum flow. equivalent to 342000.O00 gal
Ions daily as the average. and 100000
gallons per day as the minimum ioN
Mr.. Hale further estimates 1.25 Gu. 4
per second per square mile. or 25S.0oo,
600 gallons as the maximum amour
that can be advantageously utilized 70
r power purposes under reasonably cco
nomical development.
The records obtained from the Ban
! croft mills indicate that the maximum
utilizable flow is 26o.o00O00 galior
daily. and the minimum flow Of n
stream about 100000 gallons. whic
, coincide with a fair degree OF accurac
with the deductions OF Mr.. Hale.
The average between the maximui
and minimum figures given aboy
would be 150,0O0.000 gallons daily bl
as a flow Of 26O.OOO.OOO gallons Is {
much more frequency than one Of 40
100000 gallons, It would be fair an
conservative to assume 1s0,OO0.000 ga
Ions per diem as the average availab
flow of the stream. and Of this amour
the city now controls one-half and N
William Lea and Sons Company III
other half. or 9O.OOo.OO0 gallons per diei
FOR each.
Assuming that the race cevciopmei
( Is ample TO take the available fio1
with head OF p feet and an efiicienC