That created rain runoff carrying sediment to the canal network.

The roofs within the courtyards are covered with plants reducing rain runoff and increasing the lifespan of the roof.

Meanwhile, Derec helps the robots figure out a way to divert that night's rain runoff so it won't destroy the city.

From there I went into a stream and walked for a quarter of a mile in the water, which was murky from rain runoff higher up.

Almost all rural ponds are artificial, created by damming very small streams or collected rain runoff.

The cinder block shifted, and he could see where rain runoff from the trailer had eroded the sod underneath.

The primary water sources for the lake (rain, runoff and tidal flows through tunnels) are all close to the surface.

Over the years, thorium was washed onto Rochelle Park lots by rain runoff.

She also said that improvements were needed in the plan to manage rain runoff on the 12-acre site.

There were wide curbs for rain runoff.