Originally Posted by caspermike
when was new orleans a dam? new orleans was built in a horrible spot in a swamp not in the high plains.
Mikey, since I don't think you know where New Orleans is, here is a short lesson for you...Click Map of New Orleans, LA by MapQuest
The blue line you see going through N.O. is a river. The 2nd largest river in US. The Mississippi River. "Through a natural process known as delta switching the lower Mississippi River has shifted its final course to the ocean every thousand years or so. This occurs because the deposits of silt and sediment begin to clog its channel, raising the river's level and causing it to eventually find a steeper, more direct route to the Gulf of Mexico.
The abandoned distributary diminishes in volume and forms what are known as bayous. This process has, over the past 5,000 years, caused the coastline of south Louisiana to advance toward the Gulf from 15 to 50 mi"
"U.S. government scientists determined in the 1950s that the Mississippi River was starting to switch to the Atchafalaya River channel because of its much steeper path to the Gulf of Mexico. Eventually the Atchafalaya River would capture the Mississippi River and become its main channel to the Gulf of Mexico, leaving New Orleans on a side channel. As a result, the U.S. Congress authorized a project called the Old River Control Structure, which has prevented the Mississippi River from leaving its current channel that drains into the Gulf via New Orleans.
Because of the large scale of high energy water flow through the Old River Control Structure threatening to damage the structure, an auxiliary flow control station was built adjacent to the standing control station. This US$300 million project was completed in 1986 by the U.S. Army Corps Of Engineers."
Although, I was primarily referring to a point Yourrealdad brought up about the levees causing more harm than good, because they took away the natural protection offered by sediment deposits, and increased shoreline erosion, where historically the coastline in that area would grow. I do not, however, dispute your statement of it being a bad location for a large city.
"Over the years, scientists have observed the impacts of dams and levees on the ecology of rivers, riverbanks and estuaries. They have learned that major alterations in flows affect most other aspects of the physical system on which both wildlife and humans depend, including river morphology, water quality, nutrient transport and estuarine hydrodynamics. These changes also affect bank erosion, groundwater levels, shoreline erosion, flood peaks, soil salinity and water temperature: the list of known impacts multiplies with every year. Though dam building is an ancient technique, it is only in the last 100 years - primarily in the last 50 - that technology has enabled humanity to create the truly massive structures that have such deadly impacts on our rivers. The first country to embark on big dam building - and the first to experience the resulting problems - was the United States: today it has few rivers left to dam."
"ronald what happens when the rest of the creeks running into denver dry up and you need that water saved up in elevenmile? if it wasn't there denver would have never been the size it is and chance are you wouldn't even be a specle in your dad's eye." - If that had happened, someone else would be here to give you crap
and I guess I wouldn't be around to care about rivers or dams...but the energy that spawned me would still live on, in some form or another.
Anyway, this was fun, but I'm done.