▁an ▁App old ▁double - in let ▁p ump , ▁and ▁each ▁was ▁driven ▁by ▁a ▁pair ▁of ▁high - press ure ▁cond ens ing ▁steam ▁engines . ▁A ▁pair ▁of ▁engines ▁was ▁r ated ▁at ▁ ▁and ▁could ▁p ump ▁ 3 5 0 ▁tons ▁per ▁minute ▁( 5 1 4 ▁Meg al it res ▁per ▁day ▁( M ld )). ▁The ▁cost ▁of ▁the ▁installation ▁was ▁£ 1 7 , 0 0 0 . ▁ ▁A ▁Royal ▁Commission ▁in ▁ 1 9 2 7 ▁considered ▁the ▁part ▁played ▁by ▁the ▁various ▁types ▁of ▁d rain age ▁bodies , ▁and ▁the ▁Land ▁D rain age ▁Act ▁ 1 9 3 0 ▁sought ▁to ▁un ify ▁these , ▁by ▁creating ▁C atch ment ▁Bo ards , ▁responsible ▁for ▁the ▁main ▁rivers , ▁and ▁internal ▁d rain age ▁bo ards , ▁responsible ▁for ▁the ▁d rain age ▁of ▁low - lying ▁areas ▁such ▁as ▁the ▁F ens . ▁The ▁Act ▁also ▁expanded ▁the ▁Four th ▁District ▁to ▁include ▁the ▁area ▁formerly ▁managed ▁by ▁the ▁Sk ir beck ▁Court ▁of ▁S ew ers , ▁and ▁the ▁With am ▁Four th ▁District ▁ID B ▁became ▁the ▁responsible ▁body ▁for ▁d rain age ▁from ▁ 1 ▁April ▁ 1 9 3 5 . ▁Thor pe ▁C ul vert ▁p ump ing ▁station ▁was ▁built ▁and ▁commission ed ▁in ▁ 1 9 3 8 , ▁to ▁p ump ▁water ▁from ▁the ▁ 5 0 0 0 ▁acres ▁into ▁the ▁Ste eping ▁River . ▁R enn ie ' s