3 of 41 METRO The electrical generating station at Canyon Dam was partially submerged and damaged in the flood of 2002. The flood excavated a 2.2-kilometer-long, 7-meter-deep canyon in the bedrock. In the 2002 flood, the peak flow was about 70,000 cubic feet per second. We have geological evidence of these catastrophic events, and models that reproduce their behavior but, because they're extremely rare, it has been impossible to test how well these models do when compared to a real event. Flows seem to have peaked at nearly 1,500 cubic meters of water every second. Even with that residual uncertainty, however, the chance to validate our models against a well-defined event should give us greater confidence in their applications elsewhere. Heavy rains have pushed water levels at the Canyon Lake Dam to record levels, sending water coursing over an overflow spillway for the first time in the dam's 45-year history. Guadalupe Valley Flood of 2002 provides information and photos of the flood that hit the Guadalupe River and Canyon Lake in Texas on June 30, 2002. Take a guided educational tour and explore the gorge that was eroded 40 feet below the pre-flood terrain by the 2002 flood event, when flood waters went over the Canyon Lake Spillway for the first time in its history. Other business, whose own properties were not damaged, are suffering from the loss of … Canyon Dam protected downstream areas from major floods in 1978, 1987, 1991, 1992 and 1998. Your California Privacy Rights | Do Not Sell My Personal Information Sign up or login to join the discussions! It now is operating again … Most employees of the liveries catering to canoeing, kayaking, rafting and tubing have lost their jobs. The spillway, which drains water from the lake into the river below, is 31 feet below the top of the dam. You must login or create an account to comment. Flooding in Iowa in 1993 similarly opened a limestone gorge behind a spillway at Corvalville Lake north of Iowa City, but Devonian Fossil Gorge is narrower and shallower than Canyon Lake Gorge. … Nine people were killed by the flood over a 20 miles (32 … Rodriguez said that the flood waters have contaminated drinking water in the city of Castroville, so 3,000 residents have been told to either boil their water or drink bottled water. Ad Choices, with 37 posters participating, including story author. Flood waters washed away a bridge over the river carrying Farm Road 306, a major county thoroughfare 13 miles south of New Braunfels, and several other bridges are underwater. July 2002. Canyon Lake is located about 16 miles upstream from New Braunfels on the Guadalupe River. But researchers have also identified a few cases, both on Earth and Mars, where features seem to have been formed by sudden massive flooding (on Earth, these are often associated with glacial melting). Neither compares to the most famous of canyons, the Grand Canyon. All rights reserved. Several bridges are underwater and one town's drinking water has been contaminated by the floods that have killed nine people. CNMN Collection Officials said the earthen dam itself remains functional. The site resides just below an emergency spillway, meant to relieve pressure on a dam across the Guadalupe River. The result — carved mostly in just three days — is one of the area’s most-riveting natural wonders, Canyon Lake Gorge. The lake The boulders that were removed to form the canyon were typically about a meter in diameter, but tended to be comprised of a single, flat sheet of rock. This tragic event of nature "unearthed" a true Hill Country treasure which you can now experience firsthand with a trained guide. At Canyon Lake, a reservoir north of San Antonio, water rushed over the dam's spillway, pouring into the valley below. Below that region, the gorge opens up into another kilometer that's a bit more like an alluvial valley, with winding channels spread over a wider space. Canyon Lake Reservoir and Dam Canyon Lake is located on the Guadalupe River, 16 miles northwest of the city of New Braunfels in Comal County, Texas (Fig. President Bush Thursday declared the counties disaster areas, making them eligible for federal relief funds. This tragic event of nature "unearthed" a true Hill Country treasure which you can now experience firsthand with a trained guide. Construction of Canyon Dam began in 1958 and was completed in 1964, at a total cost of $20.2 million (Eckhardt 2002, USACE 2002a). The upper part of the Guadalupe River Watershed officially received 34 inches of rain in approximately one week. The flood occurred in 2002 at a site now called Canyon Lake Gorge. Could Have Been Worse: The majority of the water fell in the upper river basins of rivers like the Guadalupe and Medina (as opposed to the lower basin deluge of '98). In July 2002 up to 67,000 cubic feet (1,900 m ) of water per second flowed over the spillway of Canyon Lake, Texas for approximately six weeks, the first time the spillway had been in use since the reservoir dam was constructed in 1964. It was the first time the spillway became active, and the landscape below it would literally not be the same afterwards. Use of and/or registration on any portion of this site constitutes acceptance of our User Agreement (updated 1/1/20) and Privacy Policy and Cookie Statement (updated 1/1/20) and Ars Technica Addendum (effective 8/21/2018). In the summer of 2002, a week of heavy rains in Central Texas caused Canyon Lake -- the reservoir of the Canyon Dam -- to flood over its spillway … Many fine details of the rocks on the canyon walls, including fossilized patterns of water that flowed when the rock first formed, remain intact, suggesting the bedrock itself wasn't worn down. The gorge below the spillway of Canyon Lake in Texas was created by three days of flooding in 2002. updated 10/8/2007 8:52:52 AM ET 2007-10-08T12:52:52 Print In July of 2002, a stubborn low-pressure system parked itself over the region and much of south Texas received almost a year's worth of rainfall in less than a week. During your 3-hour tour, you will walk along an exposed fault zone, … The flood beginning July 4, 2002 was the first time that floodwaters flowed over the Emergency Spillway since the Reservoir was completed in 1964. 1). 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