Encyclopedia of Engineering Geology

2018 Edition
| Editors: Peter T. Bobrowsky, Brian Marker


  • Jeffrey R. KeatonEmail author
Reference work entry
DOI: https://doi.org/10.1007/978-3-319-73568-9_247


Run-off, also referred to as runoff or surface runoff, is the term used to refer to that part of precipitation in the water cycle that moves on the ground surface downslope or downstream away from the location where it first accumulated as rain or snow. Surface water run-off is part of the water cycle that also includes evaporation, infiltration, and storage (USGS 2016). Run-off is estimated from rainfall based on an empirical approach that is known as the rational method (Goyen et al. 2014)
$$ q=C\ A\ p $$
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  1. Goyen A, Phillips BC, Pathiraja S (2014) Project 13: urban rational method review. Australian rainfall & runoff report P13/S3/001, Engineers Australia. http://www.arr.org.au/wp-content/uploads/2013/Projects/ARR_Project_13_Stage3_report_DRAFT.pdf. Accessed May 2016
  2. USGS (2016) The water cycle. U.S. Geological Survey webpage. http://water.usgs.gov/edu/watercycle.html. Accessed May 2016

Copyright information

© Springer International Publishing AG, part of Springer Nature 2018

Authors and Affiliations

  1. 1.Amec Foster WheelerLos AngelesUSA