ACCT 2220 Study Guide - Final Guide: Surface Runoff, Evapotranspiration, Water Cycle

• School: University of Guelph
• Department: Accounting
• Course: ACCT 2220
• Professor: Adeel Mahmood

Document Summary

This equation can be applied to different situations such as a watershed basis or for any location and can be calculated for different time periods. When precipitation falls on a soil surface, the water will follow various pathways. Some of the water will infiltrate through the soil surface depending on the surface conditions. Water that does not infiltrate through the surface will collect on the surface and/or be lost through surface runoff (r1). Once water infiltrates through the surface it may percolate down through the soil and some may be lost through drainage. Water that is not lost through deep drainage will be stored in the soil as soil moisture storage. Potential evapotranspiration (pet) is the amount that could be used by plants if there was always water available in the soil. Actual evapotranspiration (eta) is the amount of water that is actually used. This amount will depend on soil moisture levels and precipitation.