Linked from
The 14 pages that link to Runoff, each with the reason it gives.
Drainage basinRelated: It transfers precipitation from slopes into the basin's channel network.
Water balanceRelated: It carries water out of many land-surface accounting areas.
River dischargeRelated: Runoff entering a channel changes its discharge.
WadiRelated: Storm runoff supplies the short-lived flows in wadi channels.
HydrosphereRelated: It carries surface water toward rivers and the sea.
StreamflowRelated: Runoff supplies much of the water that becomes streamflow.
RavineRelated: Surface runoff concentrates into channels that can cut ravines.