|
<br />
<br />lZS~
<br />
<br />126
<br />
<br />METItOPOLlTAN WATER DISTRICT
<br />
<br />to West Iron Mountain and East Iron Monntain to Sand Draw, 85
<br />miles; (3) Sand Draw to Earp, and Eureka Wash to Copper Basin, i
<br />60 miles. These three cont.racts covered fonr separate operating I
<br />sections of the system, as determined by topographic conditions .,
<br />and limitations of the sources of supply. The western section ex-
<br />tends from Big Morongo to Berdoo, ending at the latter point to
<br />avoid the dip almost to sea level between Berdoo and Fargo can-
<br />
<br />. '<: K,:_Vl<iCn~11
<br />
<br />',~ ~~'~~,~:~;:'
<br />,~(lpperijd'.fl:;"'~ _ ~.. ..
<br />~'ld.;J1 ",,:', IIhpv/e,u; r~~:d'~~~
<br />Boo:;"r ,v'/O 4. ..B.""f~r,\ ~;-i>'~~~ --.~
<br />, .'C..nctLl..... ;.-;~.......'. . B~.Js'''r^~IJ
<br />'\'-~V"-4 ~\.~v.'!';"~ ,/ I',,,,.." __'i1.~._'t.J-"I<..!le.;.':
<br />3"c_.~ "~.,-A.I( ._;~\f!"":.,,: fl/"'E~~,;~:~r,w,'4
<br />..' ~ . IN!) (,. ~ B",,"~r .V>I~
<br />80'5''',-.'1 5.__-~ I Bo~""r f:I"'~5.'"r ,.~... -
<br />_._0 ~"'7 N". C
<br />P,I1I> "b'/" "",,!", ,. 1/ ...
<br />, 80,,'''',.....4 _~ Jt-.;'-EJ'}"""'rN~O ",; ,I
<br />"":,,n1'... C"rnp J \ (f
<br />~{d"'9:'C~r;?S~~~I"'c::'Jl;;> , II", II
<br />~. '..<k$W ,'--. \( 0 ')'
<br />""c.,. H~.;i,,':d 8L\'rH~)\ 'I:'
<br />Y . Bur"c'l, t:"~"r>'C" . ~!
<br />1\\'1:, LCO'~'D )) ~ ,
<br />r~ .""", .""...'~u.." A~,~,,~c. ;.5' 0
<br />\,\-t. ~, _L-,".""~.",,,. "'~r~" [,." .J,"" \.
<br />\~<-:':'-<\", (:) L;~r[J' .':"",,_, "~SU"'''If' i~~';;"';' l'
<br />
<br />B,,, ~Iurc":;" 11~'1
<br />
<br />7=-/'
<br />
<br />
<br />G"~~n
<br />"".;"
<br />
<br />5 :,' '.}f'
<br />
<br />\1,'-'
<br />
<br />Fig. ?--Cuflslructir}(t u.(1lcr syslcm
<br />
<br />yons. The central section from Fargo to the west portal of Iron
<br />Mountain tunnel was carried across the Coxcomb Mountains,
<br />through a saddle, because no satisfactory water supply was found
<br />between the Coxcomb and Iron mountains. The eastern section
<br />extends from the east portal of Iron Mountain tunnel to Earp, and
<br />the river section from Eureka Wash to Copper Basin.
<br />The booster stations are designed as transmission boosters and
<br />provide delivery pressure only incidentally. Most of the stations
<br />are equipped with duplicate pumping units to provide for emergen-
<br />cies. The pumps handle from 55 to 300 gallons per minute under
<br />heads varying from 200 to about 900 feet. They are electricall,'-
<br />driven multistage centrifugal units, automatically controlled. An
<br />electric timing device closes the motor circnit and starts the pump
<br />at predetermined intervals, which can be adjusted to suit condi-
<br />tions. Pumping continues until the filling of the tank closes a float
<br />valve at the discharge end of the line and stops the flow of water.
<br />When this occurs the electric contacts on the recording flow meter
<br />in the pump house operate to open the motor circuit and shut
<br />down the pump. If the pump normally in service fails to start, due
<br />to motor failure, the control automatically starts the spare pump.
<br />
<br />
<br />,
<br />,
<br />
<br />I'
<br />~
<br />
|