The St. Mary banner. (Franklin, Parish of St. Mary, La.) 1889-1931, 1906-03-17
81 F'o" Wnere :.
*'~S & i-oreat

's ~ Flow Wasr.
! @-ser was a ro,.s .s ''s
I,herc ias he- ! a,.aa.
'Gsona @49ar the elcC, We" -. q Il
.l,'..... Of Eor.e's upon The s 'ss =
, ~. = the vicinity rDa nov 4
hot be ANY doubt thai tba 'De'e q
" ,,.:,Sn Of these arc more IN, Ne u
' M""'+ fer. SIS are Retained ,S.s s'a.pl
'a'E nave bean cut away. T. tDaa vail
riv@r. .sol however. mat brooks q, e.,
e2l''lrs where there never 's "a %
! n.@..1 To some extent there ss' ,'l
-, y, ~, ,a4.ed, they probably srs y
20 'A' variability OF rainfan a'sde
one SPOT is the total annual mn ha
.%, ,,.n INES ,he same There are ,s ssaa
ezra abundance and wears - ,esS
n.y. sui. aside from this. tbs.s s's
once is al work ''lef lase
r. -, 80. "He Of the enci,..
" ''ax 'nr nlted States Geological ann :,
Ney' VINO is stationed in Cbia. a. ~
'iar'S' IN Engineering News ,hs, q
a l,v'r s.. OF southern Minnesota ", ,,s =
ern Wisconsin and northern v.s ~p'
nave suffered in resn4ct - '4'ssoa'
q now since the prairies Of tSs. ss
Sloh nave either Leen convert ,s y
i'"''' ~ 60 OK come under cultiv..
ne 'hinks that the thick GOVERN. 'a
prairie grass that orca oyorlota !
sou served to retard tho a 'e
from The surface, somewhat y. =, VI
sponge, and hence promote, as
ness OF flow. Now. he save ~ es'
is grazed off 50 smoothly and S' y
ground Is packed SO hard rndo. y
hcols of cattle that the Aow i 4
ilter ana an more sudden than to-
erIF. The tendency is to n,o WV
ai'ernate extremes of high And y.
'evei IN The neishboring streams Nv
In Mr.. Hanna's opinion fnnr
twentieth of the entire nroin;. wy
once wet marsh Land. Tracts o, n,
sort existed around the basd, :
smalal streams, the DRAINAGE -,
through "sloughs" when there r,,
heavy precipitation, but usrary :.
curing under TIE surf7co H..
vegetation. often several feet NJ.
was found there, and around and
1t there was USUALLY an accumr,,.,..
o. water Tor several days after ev.,
HeaVy rain storm What has occr.
ed since that era may be oa,bo,,
from these remarks of the writer.
The aiority Of these natural roo,
volrs have been drained hv email
bitches that have grown into rr
paIa'iVeiy enormous proportions bst
lateraily and vertically. These din,
es have cut down through the mean
SOIL, thus reducing the ground vsrq
level. and The once inpsss,b.
slough is now either cultivated /,
pastured. II the area of ,bps
"sloughs' Appropriated one-tweDtr,
OF the tributary area of a river bayin,
a crdln&Se area of 1000 square mile
there would be in this basin fn
square miles OF slough" reservoirs
Now, if it is assumed that the vats
after a heavy rain, stood OIL as
deep over this area above the grog.i
prope" and that it took five DAYS
escape from the slough, there v@E
be 313 feet per second added to III
flow Of the river during this period
Thus it appears that the conss
run off would be increased sometime
over O.3 feet per second over ea
square mile for an unusually dry pei
cd o. thirty-tive days. Periods d
drouth Of such length are very 1n
in the section under discussion, an
consequently, the computed incremE
should be considerably more than sa
mated. Evidently any increase {
constant run off approximatins D
feet per square mile would great
affect the maximum and minimum do
Of a river.