河海词汇表

wady wadi canal meander confluent tributary cataract cascade falls waterfall basin freshet swelling flow flood bed spring source rapids torrent brook stream watercourse current flord ria mouth delta estuary bank iceberg ice floe territorial waters low water seaquake ground swell tempest undertow wave tide sandbar key reef isthmus strait shore beach sandbank roadstead harbour port cliff headland promontory cape cove gulf bay inlet ocean open sea high seas sea