-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On 03/01/07 12:52, Paul Johnson wrote: > Ron Johnson wrote: > >> -----BEGIN PGP SIGNED MESSAGE----- >> Hash: SHA1 >> >> On 02/28/07 12:58, [EMAIL PROTECTED] wrote: >>> On 27 Feb, Ron Johnson wrote: >>> >>>>> It's not stupid if you haven't been there. >>>> I thought you were smarter than that. >>>> >>>> Presuming you're not: >>>> >>>> Mountains and valleys (great for filling up with dammed water) are >>>> the predominant geological feature of the areas of the Columbia and >>>> Snake rivers where those hydro dams are located. >>>> >>>> Mountains and valleys are *not* the predominant geological feature >>>> of the Great Plains states, or those uber-mountainous states like >>>> Louisiana and Mississippi. >>>> >>> But there are turbines which are designed to extract energy >>> from the flow of a river without the need of significant height >>> gradients. And tidewater generators don't rely on any (land) >>> topography, so the question is not entirely unreasonable. >> Taking energy out of the river means it slows down, depositing more >> silt, and in unexpected places. Which means impaired ship >> navigation and more dredging. > > Depends on the location. The Columbia River was not exactly a navigable > waterway above Bonneville Falls before the Bonneville Power Administration > started building dams.
We were talking about the river that runs thru the plains states and down thru Louisiana and Mississippi. > > >> And in the spring flood stages, a slower river means more floods. > > > -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.6 (GNU/Linux) iD4DBQFF55FVS9HxQb37XmcRAqJ0AJjMkxoY2oBPiglhS7E8G/VgbXG7AKC2mget Auops9yRkXs8T0X4oJnPEg== =BwN+ -----END PGP SIGNATURE----- -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]