GEOG453 Midterm: GEOG 453 - Study Sheet "Quiz 2".docx

• School: University of Waterloo
• Department: Geography and Environmental Management
• Course: GEOG453
• Professor: Mike Stone

Document Summary

Water balance: links soil water storage (w), precipitation (p), interception (i), overland flow (o), infiltration (f= p-i-o), plant transpiration (et), evaporation from soil surface (es), and drainage from root zone (d) Where w is the change in soil water storage (mm) over time. Idf curve (intensity duration frequency curve): the amount (depth of rainfall) and the rate (intensity) at which it falls are the most important aspects of a rainstorm. Documented in intensity-duration-frequency curves (idf curves), which relate the intensity of the rainfall to the duration of occurrence for various probabilities. Infiltration: the infiltration of water through the soil surface is a significant factor in rural and urban watersheds. The soil infiltration rate is typically considered in terms of horton"s relationship: F= fc + (fo fc) e^-kt(exponent to e) F is the infiltration capacity at time t. Fe is the equilibrium (saturated) infiltration capacity t is the time since initial infiltration rate.