GEOG 1114 1st Edition Lecture 18 Outline of Last Lecture Characteristics of water Global water storage Uneven distribution Outline of Current Lecture Surface water Wetlands Rivers Streams Short lecture the first half of class then an in class assignment for the last half Current Lecture Surface Water 25 Lakes 2 conditions needed for lakes to develop 1 Natural basin with restricted outlet 2 Sufficient inflow of water Most fresh water developed in areas of glaciations Some Saline Great Salt lakes no natural drainage Salt builds up Some develop where Earth s crust split Lake Victoria Africa Great rift valley Some develop where sink holes collapse Sink Hole Lake Florida Calcium in limestone wet environment Some manmade Dams Reservoirs These notes represent a detailed interpretation of the professor s lecture GradeBuddy is best used as a supplement to your own notes not as a substitute Hydroelectric Power municipal water supply Irrigation Flood Control Recreation Major Environmental Impacts 100 000 dams worldwide World s Largest Lakes Wetlands Flattish places that are periodically submerged and shallow enough to permit plant growth Swamps grow trees Marshes grow grasses and rushes rice Bogs water logged soil cold climates peat grasses cranberries rice Rivers Streams Drain land surface Toward oceans streams smaller than rivers Drainage Networks Watershed Water Basins organized flow based on topography Intermittent carries water only during wet seasons or after rain Vs perennial contains water year round As an agent of erosion and shaper of landforms Fluvial Processes
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