, ▁od or ▁and ▁fa una . ▁ ▁Cre ation ▁of ▁beach ▁access ▁points ▁The ▁concentration ▁of ▁ped est rian ▁and ▁veh icular ▁traffic ▁accessing ▁the ▁beach ▁for ▁recre ational ▁purposes ▁may ▁cause ▁increased ▁er os ion ▁at ▁the ▁access ▁points ▁if ▁measures ▁are ▁not ▁taken ▁to ▁stabil ize ▁the ▁beach ▁surface ▁above ▁high - water ▁mark . ▁Rec ogn ition ▁of ▁the ▁d angers ▁of ▁loss ▁of ▁beach ▁front ▁fl ora ▁has ▁caused ▁many ▁local ▁authorities ▁responsible ▁for ▁man aging ▁coast al ▁areas ▁to ▁restrict ▁beach ▁access ▁points ▁by ▁physical ▁structures ▁or ▁legal ▁san ctions , ▁and ▁f ence ▁off ▁for ed unes ▁in ▁an ▁effort ▁to ▁protect ▁the ▁fl ora . ▁ ▁These ▁measures ▁are ▁often ▁associated ▁with ▁the ▁construction ▁of ▁structures ▁at ▁these ▁access ▁points ▁to ▁allow ▁traffic ▁to ▁pass ▁over ▁or ▁through ▁the ▁d unes ▁without ▁causing ▁further ▁damage . ▁ ▁Con cent r ation ▁of ▁run off ▁Be aches ▁provide ▁a ▁filter ▁for ▁run off ▁from ▁the ▁coast al ▁plain . ▁ ▁If ▁the ▁run off ▁is ▁naturally ▁dispers ed ▁along ▁the ▁beach , ▁water ▁bor ne ▁s ilt ▁and ▁organ ic ▁matter ▁will ▁be ▁retained ▁on ▁the ▁land ▁and ▁will ▁feed ▁the ▁fl ora ▁in ▁the ▁coast al ▁area . ▁ ▁Run off ▁that ▁is ▁dispers ed ▁along ▁the ▁beach ▁will ▁tend ▁to ▁per col ate ▁through ▁the ▁beach ▁and ▁may ▁emer ge ▁from ▁the ▁beach ▁at ▁low ▁t ide . ▁ ▁The ▁ret ention ▁of ▁the ▁fresh water ▁may ▁also ▁help ▁to ▁maintain ▁under ground ▁water