Fort Worth gazette. [volume] (Fort Worth, Tex.) 1891-1898, 1894-10-24

allow six feet IS the maximum depth
l OF uNsrfdli ON 4 splllway 200 feet Wlat'
/ This. Il viii he seen. Is one foot higher
| than the lowest dip OF the sag IN the
/ Texas and Pacific railway. Accorqlns
10 the cross sections made By the Guy
engineer. the capacity Of this possibly,
I reservoir would be LOO. 900 United
/ states gallons lone billion three nun
/ dred million gailpnsl
rFhs quantity, drawn on at the rate
Of 5000 900 gallons per day, would last
1873 days. or at the rate OF 100000 GAL
/ Ions per day, would last 325 days Al
/ though ever since my employment by
/ the city I have made careful obserya-
\ tons every DAY on the evaporation
I taken place on the surface OF the river
I to the end OF ascertsining what re-
servoir capacity must be allowed 70
] compensate for such loss, ! am con-
WINGED that no allowance need be made
I for evaporation on the surface OF this
possible reservoir. / come 10 this con
cluslon from the fact that while the
drainage area above the dam Is near
] " 400 square miles giving at the mini
/ mum objective percentage" e inches)
I ~, 9sg, 10000 United States gallons OF
water, the capacity Of the reservoir is
about one-tenth only OF this amount,
and consequently there must be enough
inflow after the reservoir is filled to ac-
count for both evaporation and seep-
/ age. Concerning the latter item, seep-
/ age. ] have been 50 often Informed by
I your "old settlers" some OF them quite
( close observers, that a successful re-
servoir was impossible. due to this loss,
! that ! have given the subject more
/ thought and investigation than would
I otherwise have been expended up
on II. All things considered. II seems
to me that their fears are without
cause. While your geological forma-
I tons here arc OF a rather porous char
acter, permitting more or less seep-
/ age. still that secpage is not of 80
SERIOUS nature, after all. Admitting
that, for year or two. there would be
considerable leakage from the reser-
{ voir, such could do no damage to the
| dam II the dam were properly built
After the first few years OF service, the
suspended sand ana clay carried down
by the water impounded VIII SO
"chink up and puddle the inter-
/ stices OF the porous strata as to render
them impervious. II Is a well recog-
l nized fact that almost perfectly dry
] holes may be dug within Eve feet OF the
waters edge of many lakes, below
/ the water level, due To this pudding
action OF flood waters. \ properly
built dam VIII stand and the basin
| become practically impervious over
I the whole flooded area.
am further assured by many "old
resldents' that no permanent dam OF
| any character whatever can be built
across the Clear Fork, and the reason
| thcN give is, that every dam so far
| built has washed out.
| IN the absence of other testimony
/ showing how the former dams ware
\ constructed | believe that we should
/ disregard these facts. have
! personally and very carefully insucct
! ed the baGks of the Clear Forl; from
| the junction with the West Fnrl, nm
| htteen miles, aad for that distance fuil
! TO hud any remaining evidences of
carefully deaigned and well built dams.
ana the fact that there are no such
| signs left seems to Indicate that If
| cams were buils they were Of a nec5s-
| sarlly temporary character and not
| OF such stable sort as the city Of
| Fort Worth would build.
II q dam were built at the location
| described above the land flooded would
be about 500 acres, which | am in
| formed is worth not to exceed SEQ per
| acre total OF about $4,000. Cost of
| raising or moving railroad and
county road, $4,000 Cost Of
dam GOOD feet long, $50 feet of which
| would be solid masonry, not to exceed
100000 Total SiSl OOO
r The supply from such reservoir
/ would best be piped down TO the city,
! but pipe line OF the size and charac-
I ter suited to the work would be ex-
/ trUmely extensive and could be sayed
! for mary years Vet by using the he'd
Of tho stream as & water course. sucr
dam, forming an inipoundiup and
storage reservoir as described h. in nv
! opinion. the logical ultiutntuin f6r Fort
1 worms water supply. Further eN-
| amiuatlons and surveys may discovar
better sitc. but in thp end | can SEQ
no escape from adopting his general
! plan
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