hampstead heath park has thirty ponds with wildlife and people can also swim in west london england

adjacent air areas bathing built bursting carried centuries city corporation dams danger demand designated divided duck ducks dug east environment event fed fleet flooding fresh freshwater future groups growing hampstead headwater heath highgate large life lifestyle london londons main majority mallots meet mixed natural nature north numbered originally pond ponds preservation preserve reduce reservoirs residential river sets sex should side single some south southernmost springs surrounding sustainability swan swans thirty urgently water west wild work