GEG 1301 Lecture Notes - Lecture 16: Australian Alps, Baseflow, Overgrazing

• School: University of Ottawa
• Department: Geography
• Course: GEG 1301
• Professor: Prof Lekowski

Document Summary

Vegetated roofs: assist in reducing the peak flow by: Porous pavements: increase baseflow by promoting groundwater recharge and thereby also reduce peak flows. Factors affecting flood recurrence intervals: flood recurrence intervals are calculated in the same way as precipitation recurrence intervals: A single river passes through multiple cities and countries so that removing water rapidly from one city may cause flooding at another: change in climate, climate change will affect: Timing and rates of snowmelt and glacier melt. Rates of evapotranspiration: with all these changes, many happening simultaneously, it is essentially impossible for flood recurrence intervals to remain the same. Reducing flood hazard: physical solutions to reduce flood hazard. Reforestation or land use change: problem of population pressure. Canada-ontario flood damage reduction program initiated in 1978 to complete mapping of flood-prone areas by municipalities and conservations authorities from the. One zone - affected by the regulatory flood (usually 100-year event but.