The climate, except in the marshy parts, is generally healthy.
The town rises from a marshy plain, east of the Carpathians, and west of the cornlands of southern Moldavia.
The low ground between the slight hills flanking the Thames valley, and therefore mainly south of the present river, was originally occupied by a shallow lagoon of estuarine character, tidal, and interspersed with marshy tracts and certain islets of relatively firm land.
The coastline is, in general, undefined and marshy, and broken into numerous bays and peninsulas.
The tributary streams entered through marshy channels.