Runoff (hydrology) - Wikipedia
WEBRunoff is the flow of water across the earth, and is a major component in the hydrological cycle. Runoff that flows over land before reaching a watercourse is referred to as surface runoff or overland flow. Once in a watercourse, runoff is referred to as streamflow, channel runoff, or river runoff. Urban runoff is surface runoff created by ...
WEB650.0201 Basic Hydrologic Concepts A. Surface runoff is the volume of excess water that leaves a watershed, also referred to as runoff volume. The watershed retains some rainfall in the form of initial abstraction , interception, infiltration, and storage. B. The runoff from a watershed is a volume, but often expressed as the average depth of
Surface runoff - Wikipedia
WEBIn the 1950s or earlier, hydrology transport models appeared to calculate quantities of runoff, primarily for flood forecasting. Beginning in the early 1970s, computer models were developed to analyze the transport of runoff carrying water pollutants.
Runoff | Surface Flow, Erosion, Sedimentation | Britannica
WEBRunoff, in hydrology, quantity of water discharged in surface streams. Runoff includes not only the waters that travel over the land surface and through channels to reach a stream but also interflow, the water that infiltrates the soil surface and travels by means of gravity toward a stream channel.
Runoff: Surface and Overland Water Runoff | U.S. Geological …
WEBJun 6, 2018 · A portion of the precipitation seeps into the ground to replenish Earth's groundwater. Most of it flows downhill as runoff. Runoff is extremely important in that not only does it keep rivers and lakes full of water, but it also changes the landscape by the action of erosion.
Surface Runoff and the Water Cycle | U.S. Geological Survey - USGS.gov
WEBJun 8, 2019 · When it rains, some water is absorbed into the sponge (infiltration) while some runs off the surface of the sponge and into the stream (runoff). Let's do a thought experiment to understand the impacts of urban development on surface runoff.
Surface Runoff - SpringerLink
WEBFeb 26, 2019 · Surface runoff, or overland flow, is a fundamental process of interest in hydrology. Surface runoff generation can occur at multiple scales, ranging from small pools of excess water that propagate downhill to stream networks that drain large catchments.
WEBHYDROLOGY - WATER BALANCE Water balance equation Æ R = P -ET -IG - ΔS where: P = Precipitation R = Runoff ET= Evapotranspiration IG = Deep/inactive groundwater ΔS = Change in soil storage Inter-relationships between components Variation of components with time • consideration of soil condition, cover, antecedent conditions, land practices
WEBrunoff processes to achieve continuous runoff generation simulations. This module ends with a brief review of the simulation of runoff generation in hydrologic models using TOPMODEL (Beven et al., 1995) and the National Weather Service River Forecast System (NWSRFS) as examples. The student needs to recognize that rainfall – runoff processes in
Runoff Processes - Section One: Overview of Runoff - Luther …
WEBIn this section we will define runoff and introduce some important terms used when discussing the rainfall-runoff process. We will discuss the runoff from both rain and snowmelt and how it relates to the overall hydrologic forecasting process.