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adverbtoward the source or against the current
Similar:
Opposite: -
in the direction against a stream's currentOpposite:
Definition that contains upstream
- head gate a gate upstream from a lock or canal that is used to control the flow of water at the upper end
- tidewater stream a stream in which the effects of the tide extend far upstream
- tidal river a stream in which the effects of the tide extend far upstream
- tidal stream a stream in which the effects of the tide extend far upstream
- fish ladder a series of ascending pools providing a passage for salmon to swim upstream past a dam
- tidewater river a stream in which the effects of the tide extend far upstream