ens , ▁was ▁consider ably ▁extended ▁by ▁Gilbert ▁during ▁his ▁time ▁at ▁Gr im ' s ▁Dy ke . ▁Work ▁on ▁dig ging ▁out ▁the ▁lake ▁began ▁in ▁ 1 8 9 9 , ▁with ▁Gilbert ▁himself ▁assist ing ▁in ▁the ▁task . ▁Event ually ▁it ▁covered ▁about ▁one ▁and ▁a ▁half ▁acres , ▁with ▁an ▁island ▁in ▁the ▁middle , ▁a ▁punt ▁house ▁and ▁changing ▁h ut , ▁and ▁an ▁artificial ▁water fall ▁that ▁was ▁cer emon ial ly ▁turned ▁on ▁in ▁December ▁ 1 8 9 9 . ▁The ▁lake ▁was ▁dra ined ▁and ▁re filled ▁each ▁year , ▁to ▁keep ▁the ▁water ▁clear , ▁and ▁was ▁stock ed ▁with ▁tr out . ▁ ▁In ▁ 1 9 0 5 ▁the ▁lake ▁was ▁extended ▁again ▁to ▁a ▁roughly ▁rect angular ▁shape , ▁meas uring ▁ 1 7 0 ▁yards ▁by ▁ 5 0 ▁yards . ▁When ▁Gilbert ▁lived ▁at ▁Gr im ' s ▁Dy ke ▁he ▁sw am ▁in ▁the ▁lake ▁every ▁day ▁from ▁March ▁to ▁September . ▁ ▁On ▁ 2 9 ▁May ▁ 1 9 1 1 ▁Gilbert ▁had ▁arranged ▁to ▁give ▁a ▁sw imming ▁less on ▁in ▁the ▁lake ▁to ▁two ▁local ▁girls , ▁Win if red ▁Isabel ▁Em ery ▁( 1 8 9 0 – 1 9 7 2 ), ▁a ▁teacher ▁and ▁nie ce ▁of ▁the ▁actors ▁Cy ril ▁Mau de ▁and ▁Win if red ▁Em ery , ▁and ▁her ▁ 1 7 - year - old ▁pup il ▁Ruby ▁Viv ian ▁P ree ce .<