riverbed

Everyday

A riverbed is the bottom of a river, the ground the river water flows over. tree →

In the lessons

Geography: the riverbed has stones, sand, mud and pebbles; in dry weather a riverbed may be dry. Science: fossils and gold have been found in riverbeds; water smooths stones on the riverbed. Phrases: a dry riverbed, the stony riverbed, along the riverbed.

Examples

• The riverbed was covered with smooth stones. tree →
• In summer the riverbed dried up. tree →
• Fish lay their eggs on the gravel of the riverbed. tree →
• We could see the riverbed through the clear water. tree →
• A dry riverbed can flood very fast after a storm. tree →
• They found an old coin in the riverbed. tree →

Note

One word (also «river bed»). Countable. «Bed» here means the bottom — like «seabed». Safety: never camp in a dry riverbed; heavy rain can fill it suddenly.