Wadi is the other term for riverbed.
The river bed
river bed/ canyon
Another word for a barracks bed is COT.
tributary
colorado river
Its name refers to the darkness of the river bed that has been lined with thick layers of decomposing vegetation.
Ponni , the other name of cauvery river.
Tributary when one river flows into another or if more than one river merges to form another - Confluence
St. John's River
rat that lives in a river
a little bed of water flows and the joins a bigger bed of water, where it joins a stream and then another stream to a bigger stream, then a river which joins a bigger river then goes down to a waterfall where it joins a lake.
hay as in "hit the hay"