tag:blogger.com,1999:blog-5211670216140060946.post2247575619880672286..comments2024-03-17T18:37:36.377-07:00Comments on Geotripper: Liveblogging the Deluge: The Concerns (Panic?) at Oroville Dam, a Story We've Seen BeforeGarry Hayeshttp://www.blogger.com/profile/00531226195147986457noreply@blogger.comBlogger6125tag:blogger.com,1999:blog-5211670216140060946.post-85200344212907533292017-02-12T19:22:59.135-08:002017-02-12T19:22:59.135-08:00I love you geo-nerds. I've never heard of cany...I love you geo-nerds. I've never heard of canyon lake before but thanks for introducing me.Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-5211670216140060946.post-89263258100582953782017-02-11T09:20:22.776-08:002017-02-11T09:20:22.776-08:00Whups, I took a closer look at the Wiki article. M...Whups, I took a closer look at the Wiki article. My comment about Canyon Lake may not be applicable in this case.Forrest Hopsonnoreply@blogger.comtag:blogger.com,1999:blog-5211670216140060946.post-18553114130239653572017-02-11T09:10:43.613-08:002017-02-11T09:10:43.613-08:00I've been to Canyon Lake Reservoir. Much of th...I've been to Canyon Lake Reservoir. Much of that area (Hill Country) is underlain by Mesozoic limestone that hosts a huge aquifer system. Edwards Aquifer. I'm certainly no expert on that area but it seems more likely that the deep canyons are the result of dissolution rather than "megafloods." Forrest Hopsonnoreply@blogger.comtag:blogger.com,1999:blog-5211670216140060946.post-78379051440937635372017-02-10T20:18:56.152-08:002017-02-10T20:18:56.152-08:00This also happened at Canyon Lake on the Guadalupe...This also happened at Canyon Lake on the Guadalupe river near New Braunfels tx. Here is a link to a wikipedia article on the gorge that resulted from use of the emergency spillway in 2002. https://en.wikipedia.org/wiki/Canyon_Lake_Gorge<br />A quote summarizing the gorge and discoveries made from it:"But because many of the geological formations of Canyon Lake Gorge are virtually indistinguishable from other formations which have been attributed to long term (slower) processes, the data collected from Canyon Lake Gorge lends further credence to the hypothesis that some of the most spectacular canyons on Earth may have been carved rapidly during ancient megaflood events.[6] Additionally, because the flood conditions under which the gorge was formed are known, Canyon Lake Gorge provides a means of developing improved computer model reconstructions of pre-historic floods to determine water volume, flood duration and erosion rates."lylenoreply@blogger.comtag:blogger.com,1999:blog-5211670216140060946.post-84620486166134805302017-02-10T16:00:53.620-08:002017-02-10T16:00:53.620-08:00Thanks for the clarification, I basically knew tha...Thanks for the clarification, I basically knew that about Don Pedro, and makes sense for all such dams. I'll correct the sentences.Garry Hayeshttps://www.blogger.com/profile/00531226195147986457noreply@blogger.comtag:blogger.com,1999:blog-5211670216140060946.post-6486566608287923172017-02-10T15:49:03.533-08:002017-02-10T15:49:03.533-08:00Point of clarification, the emergency spillway is ...Point of clarification, the emergency spillway is just a concrete wall some 20 feet lower than the top of the dam. It is not opened, water simply flows over the wall once the lake exceeds capacity. It is not physically possible for water to over top the dam itself.jfmiller28https://www.blogger.com/profile/18084888217165201690noreply@blogger.com