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Regenabfluss m
gen.	wet weather flow
earth.sc., life.sc.	rain discharge
Regenabfluß m
construct.	rainwater flow
nat.res.	storm-water flow; storm runoff; rain runoff; rain-water flow; wet-weather flow; storm-water runoff

Regenabfluss: 2 phrases in 2 subjects

Earth sciences	1
Natural resourses and wildlife conservation	1