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Topic: Medina Dam

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	Medina Lake and Canal System
		Medina Dam, Medina Lake, and Diversion Lake were constructed partially on the Edwards limestone outcrop, so the lakes contribute large amounts of water to Aquifer recharge.
		Normally, dams are not constructed to withstand water going over the top; and if that had occurred, there could have been significant erosion that might have undermined the structural integrity of the Dam.
		The solid concrete dam is 55 feet high, 44 feet wide at the base, 440 feet long, and is a curved structure built on a radius of 700 feet.
	www.edwardsaquifer.net /medina.html (4938 words)

	Medina Dam - Wikipedia, the free encyclopedia
		The Medina Dam is a hollow masonry type dam built in 1911 and 1912 by the Medina Irrigation Company in what became Mico, Texas.
		It is located at the south end of Lake Medina in northeastern Medina County, Texas.
		The reservoir behind the dam is called Lake Medina and serves as a major recreation area.
	en.wikipedia.org /wiki/Medina_Dam (267 words)

	Handbook of Texas Online:
		Medina Lake, an artificial lake on the Medina River, is eight miles northwest of the Medina River in southeast Bandera and northeast Medina counties (its center is at 29°32' N, 98°56' W).
		The lake was constructed to irrigate farmlands in Medina, Bexar, and Atascosa counties, but it also became an important recreational facility in the area.
		The maximum depth of water at the dam is 152 feet, and the average depth of the lake at spillway level is seventy-five feet.
	www.tsha.utexas.edu /handbook/online/articles/view/MM/rom9.html (664 words)

	Medina Dam's Integrity Cannot Be Assured(Texas dam collapse possible)
		Dam is 90 years old, had cracks, valve malfunctions, and other problems revealed in 1998 and 2000 inspections.
		Water is within a foot of overtopping the concrete dam, 11' over the spillway, inflow has been dropping at the other end of the lake, but conflicting reports on whether a new rise is coming(all the other indicators and conditions would suggest that it won't rise.
		A dam breaking would release a high wall at first which would rapidly flatten, unless it was going down a canyon.
	www.freerepublic.com /focus/news/711604/posts (956 words)

	Bob's Cove Marina - Medina Lake, Bandera, Texas
		Medina Lake was constructed as an irrigation reservoir between 1911 and 1912.
		The inscription on a historical marker atop the dam reads: "Henri Castro, who colonized this area in the 1840s, envisioned irrigated farms along the Medina River.
		Completed in 1912, Medina Dam was hailed as the largest in Texas and the fourth largest in the United States.
	www.bobscove.com /aboutmedina.html (409 words)

	Flood Report - 2001
		was measured at Bandera, Lima, and Medina in the Medina River Basin.
		Vanderpool, at the headwaters of the Medina River, measured 33.5 in.
		Areas downstream from the dam were evacuated as a precaution because of the fear of dam failure.
	pubs.usgs.gov /of/2003/ofr03-193/cd_files/USGS_Storms/counties/kerr.htm (607 words)

	Zzakk's Garage: Medina, Damn
		Medina Dam, the concrete structure on the Medina
		According to tonight's TV news, during a major upgrade to the dam's mechanicals two-odd years ago, plenty of 'suspicious acting foreign-looking' people came around asking questions and shooting video and stills of the dam.
		Luckily there were armed guards and the gates/locks/fences/razorwire shown in my post, as tunnels inside the dam were open during the project.
	zzakksgarage.blogspot.com /2006/07/medina-damn.html (319 words)

	Medina River, Texas (Site not responding. Last check: 2007-10-09)
		The Medina River is a short, narrow, beautiful river that is reminescent of the Upper Guadalupe because of the physical nature of its topography.
		The Medina is a narrow river averaging about 30-40 feet wide and is lined with Bald Cypress trees, though not nearly as many as before the flood of 2002.
		The Medina is generally free of major rapids and drops, but low hanging tree limbs, log jams (especially after floods) and shallow rocky chutes can pose problems resulting in bodily injury or damage to boats and gear.
	southwestpaddler.com /docs/medina.html (1139 words)

	About the Lake
		At spillway capacity, Medina Lake covers about 5,575 acres, has a length of 18 miles, a maximum width of three miles, and 110 miles of shoreline.
		Most were Mexican nationals who had prior experience building hydroelectric dams with Pearson in Mexico, and most of them brought their families.
		At least 70 people were killed by accidents and disease during the year of the dam's construction.
	www.medinalake.com /thelake.htm (490 words)

	Wild Texas Parks: Medina Lake County Park - Bandera, TX
		Although there is no camping in Medina Lake County Park, there are a number of private guest cabins, guest ranches and private campgrounds in vicinity of the lake.
		Medina Lake is best known among fishermen for its large yellow catfish.
		Medina Lake's 4,246-acres of clear water, sheltered by hills and limestone bluffs, are also haven for SCUBA divers.
	wildtexas.com /parks/medinalk.php (271 words)

	Water Use and Watershed Management
		The dam holds back the headwaters of the Missouri River and the water is used to irrigate over 110,000 acres of farmland.
		Dams are generally thought of as unyielding, perfect structures, that are safe in all situations.
		Before the dam was built, it was estimated that the annual average flow of these rivers was 14 million acre feet per year.
	zimmer.csufresno.edu /~samw/EAS113_Water_Use.htm (4666 words)

	The_Medina_River
		The riparian corridor along the Medina contains a large proportion of such habitat in Bexar County, and affords nesting and wintering habitat for birds rarely found away from the river.
		Due to the general west-to-east flow of the Medina, it does not appear to be a major avenue for northbound migrants, but the tall trees and brushy undergrowth pull in a surprising variety of species.
		Bear in mind that the flow of the Medina is controlled at the Medina Lake dam, and responds quickly to rain in the area.
	www.saaudubon.org /articles/MedinaRiver.html (2428 words)

	Handbook of Texas Online:
		The Medina River rises in north and west prongs that originate in springs in the Edwards Plateau divide of northwest Bandera County and converge near Medina (at 29°48' N, 99°15' W).
		Near the site of the later Medina Dam, an earthen dam was built in 1850, which was soon replaced by a stone structure providing power for a downriver mill.
		After construction of the concrete dam was finished in 1912, the proposed lake stood dry until rains a year later brought water down the river.
	www.tsha.utexas.edu /handbook/online/articles/MM/rnm2.html (1452 words)

	Regional Flood Management—Damms
		The main thrust of the maintenance program is the management of the vegetative cover on the floodwater retention dams which prevents destructive soil erosion and provides for structural stability.
		In cooperation with the Escondido Watershed District, Hondo Watershed District, the City of Kenedy and the Karnes County Soil and Water Conservation District, SARA maintenance personnel operate and maintain sixteen floodwater retention dams and the 2.07 miles of Nichols Creek.
		These dams protect a watershed of about 74,880 acres in the rural area of Karnes County west of the cities of Karnes City and Kenedy.
	www.sara-tx.org /site/flood_control/flood_retention.html (1038 words)

	South Central Texas June 30-July 7, 2002
		Emergency managers also were concerned about the 90-year-old dam at Medina Lake (west of San Antonio).
		Medina Lake topped its spillway and rose to within 18 inches of the top of the dam.
		Areas downstream from the dam were evacuated as a precaution to the fear of dam failure.
	www.floodsafety.com /texas/documentaries/j2002/index.htm (746 words)

	Medina Dam
		Medina dam is a 160-foot-high concrete dam that was built in 1912 for irrigation.
		The relief wells are located inside the dam and are accessible from the inspection gallery.
		The inspection gallery is accessed by two entrances at the toe of the dam.
	www.givlerengineering.com /medina.htm (258 words)

	Bandera Bulletin
		With Medina Lake having been full for three years, it is difficult to see the lake going down and exposing rocky shores that really looked better under water.
		The owners of the Medina Dam have a permit to remove 66,000 acre feet each year for irrigation and domestic use, which they may find necessary to do in 2006.
		For those interested in what this may mean to them, there is a GPS grid map of Medina Lake with detailed underwater contours, including the 24 foot contour, available from AID Association, Inc., 800-243-6277, or from some local convenience stores.
	banderabulletin.com /articles/2006/01/18/news/letters/857.txt (199 words)

	TTM web
		Dunlay, in Medina County, is a small town west 39 miles west San Antonio, 14 miles on from Lacoste.
		This was the closest point on the line to where Medina lake would be built in 1911 and temporary tracks were constructed to bring in men and materials to the construction site.
		It became the county seat of Medina in 1892, after a failed attempt in 1886, which allowed Castroville, whose residents had declined to pay the railroad a bonus to build through it in 1881, to retain the honor for a few more years.
	www.txtransportationmuseum.org /HONDO.htm (597 words)

	Medina Diversion Lake
		Medina Lake is the large lake at the top of the map.
		We have sent a public information request to Medina County to find out the width of the road easement at the bridge and other information pertinent to the county's role in this matter.
		This is a copy of a letter to the editor that Dennis Gaines sent to the Medina Valley Times, the Hondo Anvil Herald, and a Castroville paper.
	www.alamocityrivermen.org /medina_diversion_lake.htm (1003 words)

	Lamcos
		The Medina River is flowing too swiftly for the safety of those in boats, according to the Parks and Wildlife personnel familiar with the river.
		Medina Lake is said to be “poor in nutrients” which is good for water quality.
		Medina Lake has been tested by TCEQ, Bandera River Authority, USGS and the San Antonio River Authority recently and all of these have come to the same conclusion – Medina Lake is free of pollution.
	www.finepots.com /lamcos/index.html (7407 words)

	Partly Clouds: June 30-July 5, 2002
		Medina Lake went up 14 feet and was 7 feet above the spillway, and 5 feet below the top of the dam.
		A small earth dam had failed and another one downstream, with 20 acres of water behind it, may also fail.
		This water was going into Medina Lake, a reservoir of more than 4,200 acres on the Bandera/Medina county line.
	home.earthlink.net /~wxwatcher/wx_070502.htm (3388 words)

	Steve Quayle News Alerts
		At about 4:15 p.m., Deputy Eric Medina, who was on patrol at the lake, was alerted to a 1976 Chevrolet camper van with Texas license plates.
		It was parked near a ranger station at the south entrance to the park facing the dam and spillway with a video camera trained on the dam.
		After an initial inspection of the vehicle by Medina and Colorado Park Ranger John Perez, about 50 people were forced to evacuate the park and deputies denied entry to any more visitors.
	www.stevequayle.com /News.alert/04_Terror/040331.Pueblo.dam.html (415 words)

	USATODAY.com - Texans flee homes as floodwaters rage, dam bursts (Site not responding. Last check: 2007-10-09)
		The Guadalupe River — which overflowed the spillway of an upstream dam — was coursing through New Braunfels at about 70,000 cubic feet per second Friday; the normal rate is 300 cubic feet per second.
		Just northwest of San Antonio, a small dam burst and another one downstream on Chimney Creek was straining to hold back some 20 acres of water 30 feet deep.
		Wolff said that if the dam were to break, a wall of water 60 feet high would rush downstream toward Castroville.
	www.usatoday.com /weather/news/2002/2002-07-05-texas-flood.htm (620 words)

	CNN.com - Transcripts
		The Medina County EOS was notified by fax at 6:50 p.m.
		Consequently, the Medina County EOC was notified at 6:50 p.m., Karnes County officials at 7:43 p.m., Wilson County and Baylor (ph) County officials at 8:03 p.m.
		They were able to inspect the cracks in the Medina dam, and they say it appears as though that dam will hold in place, no problem.
	transcripts.cnn.com /TRANSCRIPTS/0207/06/se.02.html (513 words)

	EPA: Federal Register: Southwest Gulf Railroad Company--Construction and Operation Exemption--Medina County, TX
		The Medina County Environmental Action Association (MCEAA), as well as several other parties, had submitted comments in response to the Draft Scope suggesting as an alternative rail alignment one that used a portion of railroad right-of-way utilized to facilitate the construction of the Medina Dam in the early 1900s.
		In particular, MCEAA asserted that a route using a portion or portions of the old Medina Dam route would traverse less floodplain and impact fewer historic resources than the Proposed Route, Alternative 1, Alternative 2, or Alternative 3.
		According to MCEAA, this other alternative (the MCEAA Medina Dam Alternative), is a reasonable and feasible alternative that could require less cut and fill than the eastern routes developed by SGR.
	www.epa.gov /fedrgstr/EPA-IMPACT/2006/March/Day-13/i2391.htm (3499 words)

	USSD News (Site not responding. Last check: 2007-10-09)
		A backup to the original Saluda Dam was necessary because the seismic stability of the original dam was inadequate, and the lives of more than 120,000 people living downstream would be at risk in the event of a catastrophic failure.
		USSD is organizing the Dam Surveillance and Monitoring Workshop to be held in Sacramento, California, on October 9-10, 2006.
		The theme of the Conference was The Role of Dams in the 21st Century.
	www.ussdams.org /ussdnews.html (527 words)

	CNN.com - 'Devastating' Texas floods kill 9 - July 5, 2002
		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.
		Officials in Bexar County, which includes San Antonio, urged residents near the Medina River, in the southwest part of the county, to go to higher ground as a precaution.
		Meanwhile, in Medina County, 41 miles west of San Antonio, about 3,000 residents were allowed to return to their homes after being evacuated Thursday night, Sheriff Gilbert Rodriguez said.
	edition.cnn.com /2002/WEATHER/07/05/texas.flooding (624 words)

	Heart of Texas \| Great Texas Wildlife Trails
		Medina Dam was hailed as the largest dam in Texas and the fourth largest in the United States when it was completed in 1912.
		The large beautiful bald cypress trees along the river bottom were the original sources of lumber for house and building construction in historic Castroville.
		This 5-acre park borders the Medina River and provides rich river bottom woodlands comprised of bald cypress, pecan, hackberry, cottonwood, sycamore, willow, and mulberry.
	www.tpwd.state.tx.us /huntwild/wild/wildlife_trails/heart/hot_east/medina (1032 words)

	Fishing Medina Lake
		There are also good numbers of sizable channel and blue catfish in the 2-5 pound range with a few much bigger.
		Medina Lake has a variety of coves, rocky outcrops, and tributary creek beds.
		Hybrid striped bass have been concentrating around open water points and humps and in deep water near the dam.
	www.tpwd.state.tx.us /fishboat/fish/recreational/lakes/medina (278 words)

	Texas floods force hundreds to flee - Pittsburgh Tribune-Review
		Elsewhere in Central Texas, water continued seeping through a crack in a 90-year-old dam on the Medina River.
		Families living along the river downstream from the dam had been watching anxiously for days, and many already had packed up and left.
		Some people complained that the risk of dam failure had been exaggerated, but others felt the warnings were justified.
	www.pittsburghlive.com /x/pittsburghtrib/s_80155.html (604 words)

	Regional Flood Management—Damms
		Medina Dam Flooding along the San Antonio River
		Hard hit areas in the San Antonio River basin included virtually all the communities along the Medina and San Antonio Rivers.
		With the success of the 1998 FEMA Buyout, SARA received requests for assistance from Wilson County, Karnes County, Falls City, Goliad County and the City of Goliad.
	www.sara-tx.org /site/flood_control/FEMA_Buyout.html (135 words)

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