GEOG453 Study Guide - Midterm Guide: Drainage Density, Drainage Divide, Capillary Fringe

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

Document Summary

Study questions for quiz 1 (refer to geog 201 notes) Ratio of the total length of streams within a watershed to the total area of the watershed. Increase in drainage density, routing water more quickly into drainage system. Water goes into river more quickly, peak increases in hydrograph. Total length of all streams and rivers in a drainage basin divided by the total area of the drainage basin. Measures how well or how poorly a watershed is drained by stream channels. Increased drainage density = increased discharge peak, decreased lag time: coefficient of runoff. Fraction of rainfall that is converted into runoff: design storm. A selected storm event that is described in terms of the probability of it occurring once in a given number of years (e. g. 1/50-year flood, 1/100-year flood, 1/500-year flood) It is the basis for designing appropriate drainage and flood control.