Water which collects on the surface of the ground, and usually runs off into drains and sewers.(noun)
The Century Dictionary (Public Domain)
Use "surface-water" in a sentence
"About 52 percent of fresh surface-water withdrawals and about 96 percent of saline-water withdrawals were for thermoelectric-power use."
"Groundwater can also have an important influence on the annual water budgets of arctic surface-water ecosystems."
"Groundwater interactions with surface-water systems greatly influence water quality characteristics such as cation, anion, nutrient, and dissolved organic matter concentrations, and even the fate and behavior of toxic pollutants."