GEO 1111 Lecture Notes - Lecture 15: Evapotranspiration, Sediment Transport, Water Cycle

• School: University of Ottawa
• Department: Geology
• Course: GEO 1111
• Professor: Donald Cummings

Document Summary

Lecture 15: the water cycle- hydrology and streams: there are three stages of the hydrologic cycle pictured below. Water input > output- water level rise in river/lake, flooding, decrease in salinity, larger ships can pass through river channels etc. Water output > input- water levels drop, salinity increased, soil dries up, may result in agricultural crop failures, drought, soil transport increases etc: oceans contain 97. 2% of the earth"s water, glaciers contain 2. 8%, and streams contain only 0. 0001%. Also, name and define the 3 parts of a stream. Streams are major geological agents of change in landscapes, it transfer material from highs to lows, planes out relief, provides pathways for inland colonization of continents. Source of drinking water, supply for agriculture, recreation etc. Channel- bottom of the valley, where the water flows. Floodplain- flat area in valley level with top of the channel, portion that can be flooded: water systems erode and transport significant amounts of sediment.