▁the ▁prec ursor ▁to ▁Lake ▁Michigan , ▁Lake ▁Chicago . ▁It ▁takes ▁its ▁name ▁from ▁the ▁village ▁of ▁Tol eston , ▁now ▁a ▁portion ▁of ▁Gary , ▁Indiana . ▁The ▁sh or eline ▁formed ▁when ▁Lake ▁Chicago ▁was ▁high ▁enough ▁to ▁d rain ▁through ▁the ▁Chicago ▁out let ▁into ▁the ▁Des ▁Pla ines ▁River . ▁The ▁beach ▁is ▁ ▁above ▁the ▁level ▁of ▁Lake ▁Michigan . ▁The ▁Indiana ▁segment ▁and ▁the ▁Illinois ▁segment , ▁north ▁to ▁E van ston ▁are ▁still ▁visible . ▁North ▁of ▁E van ston ▁and ▁Michigan ▁City , ▁Indiana , ▁the ▁beach ▁has ▁been ▁er oded ▁by ▁later ▁ice ▁movement ▁or ▁sh or eline ▁wave ▁action . ▁ ▁The ▁Tol eston ▁beach ▁appeared ▁to ▁be ▁present ▁at ▁Holland , ▁Michigan , ▁at ▁the ▁eastern ▁end ▁of ▁Black ▁Lake , ▁being ▁built ▁out ▁between ▁the ▁lake ▁and ▁the ▁mar sh , ▁which ▁extends ▁east ▁from ▁Holland ▁a ▁short ▁distance . ▁It ▁is ▁there ▁built ▁up ▁to ▁a ▁height ▁of ▁ ▁above ▁Lake ▁Michigan , ▁as ▁shown ▁by ▁Gold th wait ' s ▁levels . ▁From ▁Holland ▁it ▁seems ▁likely ▁to ▁have ▁continued ▁north ward ▁to ▁the ▁Grand ▁River , ▁but ▁as ▁that ▁region ▁is ▁extens ively ▁covered ▁with ▁sand ▁blow n ▁from ▁the ▁modern ▁shore ▁the ▁beach ▁is ▁largely ▁conce aled . ▁In ▁Spring port , ▁Gold th wait ' s ▁levels ▁show ▁the ▁beach ▁to ▁be ▁about ▁ ▁above ▁Lake ▁Michigan . ▁From ▁the ▁Grand ▁River ▁it ▁appears ▁to ▁run ▁north west ward , ▁passing ▁just ▁east ▁of ▁Little