Which term describes a river that contains water year-round, except during periods of severe drought?

Which term describes a river that contains water year-round, except during periods of severe drought?

• A. Perennial River
• B. Perennial Stream
• C. Intermittent River
• D. Disappearing Stream

Answer: (A)

The main idea is ongoing flow throughout the year. A perennial watercourse carries water year-round under normal conditions, with continuous flow during all seasons and only possibly dropping during severe drought. That exactly matches a river that has water year-round except in extreme drought. The other patterns describe different schedules: an intermittent river wears water only in certain seasons or after rain, and a disappearing (ephemeral) stream dries up for long stretches. A perennial stream is similar, but since the prompt uses river, perennial river is the precise term.

The main idea is ongoing flow throughout the year. A perennial watercourse carries water year-round under normal conditions, with continuous flow during all seasons and only possibly dropping during severe drought. That exactly matches a river that has water year-round except in extreme drought. The other patterns describe different schedules: an intermittent river wears water only in certain seasons or after rain, and a disappearing (ephemeral) stream dries up for long stretches. A perennial stream is similar, but since the prompt uses river, perennial river is the precise term.