GPHY 103 Lecture 26: GPHY 103 Lecture 26
19 Dec 2016
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Ecological values of wetlands rivers and deltas. Why are wetlands valuable, why are we now building them in urban areas for storm. Colorado river won(cid:495)t be on it but oak ridges moraine, motivations. Further issues related to the sharing of the lower states(cid:495) water emerged. Over the last century, there(cid:495)s been a gradual decline in flow; due to large storage basins, The colorado compact (1922) paved the way for water development and plans for the. Data that was available in 1922 was from a relatively wet period diversions etc. , and beforehand other causes (climate changes) The boulder canyon act (1928: california allotted 4. 4 maf. Has very little area within the colorado river watershed. Powerful politics: arizona 2. 8 maf, nevada 0. 3 maf, mexico ended up with none, especially in years of lower flow. Hoover dam was the first big dam on the colorado, arch concrete dam: built 1932-35; fast for its size, first power production in 1936.
