▁Even ▁when ▁average ▁precip itation ▁of ▁about ▁ ▁and ▁average ▁local ▁flows ▁of ▁about ▁ ▁are ▁added ▁to ▁in flow s , ▁the ▁expected ▁total ▁normal ▁in flow s ▁would ▁still ▁be ▁less ▁than ▁the ▁roughly ▁ ▁that ▁the ▁Port age ▁D ivers ion ▁contributed ▁by ▁the ▁end ▁of ▁the ▁flo od ▁season ▁in ▁ 2 0 1 1 ▁when ▁it ▁ceased ▁operation ▁on ▁August ▁ 5 . ▁ ▁T win ▁L akes ▁Beach ▁has ▁been ▁the ▁recip ient ▁of ▁many ▁storm s ▁causing ▁sh or eline ▁er os ion , ▁flo oding ▁and ▁property ▁damage . ▁ ▁Most ▁not ably ▁are ▁the ▁storm s ▁of ▁the ▁fall ▁of ▁ 1 9 9 9 , ▁especially ▁the ▁storm ▁on ▁November ▁ 1 ▁, ▁as ▁well ▁as ▁the ▁fall ▁of ▁ 2 0 1 0 ▁ ▁" we ather ▁bomb " ▁both ▁of ▁which ▁involved ▁wind ▁g ust s ▁of ▁over ▁ 1 0 0   km / h ▁and ▁high ▁wind s ▁for ▁an ▁extended ▁period ▁of ▁time ▁with ▁the ▁result ▁being ▁a ▁shift ▁in ▁the ▁lake ▁of ▁water ▁from ▁the ▁north ▁bas in ▁of ▁Lake ▁Man it oba ▁to ▁the ▁south ▁bas in ▁of ▁the ▁lake ▁and ▁large ▁waves . ▁ ▁Both ▁storm s ▁resulted ▁in ▁considerable ▁sh or eline ▁er os ion , ▁property ▁damage , ▁and ▁some ▁flo oding . ▁ ▁The ▁ 1 9 9 9 ▁storm ▁caused ▁an ▁estimated ▁$ 1 ▁million ▁in ▁damage ▁and ▁was ▁a ▁catal yst ▁for ▁establish ing ▁new ▁reg ulation ▁of ▁lake ▁levels