Большой англо-русский и русско-английский словарь
off-channel [off-river] basin, off-channel [oft-stream] reservoir
Англо-русский словарь технических терминов
off-channel [off-river\] basin, off-channel [oft-stream\] reservoir
Русско-английский политехнический словарь
off-channel [off-river] basin, off-channel [oft-stream] reservoir