Lake conroe water level

Lake conroe water level DEFAULT

Low points on Thelma Road, Aqua Vista Drive, and Riverview Drive begin to flood. Feet MSL. Posted by … The reasoning comes in via the backstory of Lake Conroe. The river authority and the Texas Water Board partnered with the City of Houston in to "jointly construct a water supply reservoir, Lake Conroe, on the west fork of the San Jacinto River" by building the Lake Conroe Dam. The second largest rainfall event recorded in continental U.S. history was during Tropical Storm Amelia in , which left Texas Hill Country with 48 inches of rain. Shortly after Harvey descended on Harris County, Lake Conroe rose to water levels it had not reached since the flood. $1, “The homeowners in these interlocutory appeals allege that during Hurricane Harvey in late August , the River Authority released rising water from Lake Conroe into the West Fork of the San Jacinto River, causing or exacerbating the downstream flooding of their homes in Kingwood,” the First Circuit opinion reads. Houston Water, San Jacinto River Authority & Coastal Water Authority have released an operations plan to lower water levels in Lake Houston and Lake Conroe in an effort to prevent flooding. Meanwhile, the San Jacinto River Authority is not planning to release water from Lake Conroe, which is 1 foot below its normal pooling level. A pair of public meetings on the issue drew hundreds of residents from Lake Conroe and areas downstream like Kingwood and Lake Houston, which experienced extensive flooding during Hurricane Harvey. At least five people have died during Hurricane Harvey's assault on the Texas coast and Houston. Lake Conroe, a reservoir 43 miles north of the city, is one example. Many homes had wind and roof damage; downed trees and damaged shingles were the culprit of many roof leaks during Hurricane Harvey. 2. The approved principles are: 1. The current water level is feet above mean sea level (MSL), which is ’ over the normal pool elevation of ’ MSL. This means that Lake Conroe reduced the amount of flow that would have gone down the river by about 40 percent while keeping the water level in the lake within the six-foot flowage easement. The amount of water from Hurricane Harvey that flowed through the dam was significant, yet by its own calculations, SJRA says that the lake releases contributed only 15% to 18% of the total flows that caused flooding in the Lake Houston area during Harvey. • Lake Conroe releases only accounted for % of the water entering Lake Houston and % of “peak flows” entering Lake Houston • While the almost 80, acre feet per second being released from Lake Conroe at its peak was a tremendous quantity of water, Lake Conroe was receiving (via rainfall and run-off) , acre feet per second. Fishing spots and depth contours layers are available in most Lake maps. Montgomery County Precinct 1 Constables who are charged with enforcing the law on the lake will be busy for the next few days. Hurricane Ike’s storm surge flooding at the same tide gage was ft suggesting Harvey’s rainfall run-off was only of a foot lower than Ike’s storm surge. That means the SJRA released unprecedented levels of runoff before they were at capacity. In order to prevent the Lake Conroe Dam from overflowing and failing, the San Jacinto River Authority released from the dam 79, cubic feet of water … August 31, at pm. August 29, at am. The technical basis for these conclusions is overwhelming. $3, Preparing lake level chart Level Base: MSL Full Pool: feet: Change Since Yesterday: Feet Level Controlled by: … Even with inches of rain since October 1, we have now seen a Lake Conroe down 2 or more feet for over 4 months (with a lake level of on December 2, ). located well downstream of Lake Conroe during Hurricane Harvey. Lake Conroe reduced rain flow into the West Fork of the San Jacinto River by 40% during Hurricane Harvey. Because Lake Conroe is located upstream from Lake Houston and pre-releases before a storm run the risk of pushing water into Lake Houston are … After the lake level reached feet at a.m. on August 27, SJRA first opened its gates at a.m. and started releasing cfs. The datum of this gauge changed from feet NGVD29 to 0 NAVD88, adjustment on May 1, Several boats were between homes, one almost in a living room. Feet MSL. The Conroe Navigation App provides advanced features of a Marine Chartplotter including adjusting water level offset and custom depth shading. HOUSTON – Lake Conroe's water level has exceeded its full levels and officials with the San Jacinto River Authority will begin controlled releases of water… In the wake of Hurricane Harvey. View over USGS real-time stream, lake, reservoir, precipitation, and groundwater stations in context with current weather and hazard conditions on both desktop and mobile devices. The peak release rate going out of the dam was 79, cfs. They’re sanctioned to fill the lake up to feet—but the lake never climbed above feet during Hurricane Harvey. • Lake Conroe releases only accounted for % of the water entering Lake Houston and % of “peak flows” entering Lake Houston • While the almost 80, acre feet per second being released from Lake Conroe at its peak was a tremendous quantity of water, Lake Conroe was receiving (via rainfall and run-off) , acre feet per second. Interstate 45 (I) is a major Interstate Highway located entirely within the U.S. state of Texas.While most Interstate routes which have numbers ending in "5" are cross-country north-south routes, I is comparatively short, with the entire route located in Texas. The amount of water flowing into Lake Conroe was , cu ft per second, and the release rate from the Lake Conroe dam Aug. 28 was 79, cu ft per second. Lake Conroe has gone over its banks!!! According to TWDB volumetric survey, at the conservation capacity pool elevation of feet above mean sea level, the lake has approximately 19, acres of water surface and a storage volume of , acre feet. MSRP. Inflow fluctuated up and down, likely in response to feeder bands passing over the watershed or variations in readings due to w… During Harvey’s rainfall event, Lake Conroe was about 8 inches below normal pooling level. Low points on Thelma Road, Aqua Vista Drive, and Riverview Drive begin to flood. Starting on … Ten months after Harvey hit the Texas coast Lake Conroe is still feeling it’s effects. Residents of the Kingwood, Humble, and Atascocita areas are familiar with the finicky nature of Lake Houston water levels on a personal level. Powerful motor allows for easy transitions and smooth ride. Feet MSL. On Friday, September 1, the flow of water from the Lake Conroe Dam was 2, cubic feet per second. Preparing lake level chart Level Base: MSL Full Pool: feet: Change Since Yesterday: Feet Level Controlled by: … They’re sanctioned to fill the lake up to feet—but the lake never climbed above feet during Hurricane Harvey. Meanwhile, the San Jacinto River Authority is not planning to release water from Lake Conroe, which is 1 foot below its normal pooling level. The Lake Conroe water level has now crested and is beginning to slowly decline. Eddie, and others, Lake Conroe was barely over 5' high during Harvey and Lake Houston was over 11' high at the peak of flooding. Lake Conroe was constructed by SJRA beginning in and was completed in to serve as a water supply reservoir through a joint venture with the City of Houston, which owns two-thirds of the water rights in the reservoir. Lake Conroe Water Level. The Lake Conroe dam actually REDUCES downstream flooding by reducing the peak flow of water going through Lake Conroe. The rising water from Harvey had stabilized at about 1' below the floor of my house. The amount of water from Hurricane Harvey that flowed through the dam was significant, yet by its own calculations, SJRA says that the lake releases contributed only 15% to 18% of the total flows that caused flooding in the Lake Houston area during Harvey. WATER LEVEL. After several hours of public debate, the SJRA board voted to continue lowering water levels. Lake Conroe was built as a public water supply and usually sits at feet above sea level, with several inches of wiggle room in case of a heavy rain. This change became effective on November 19, and required an … Preparing lake level chart Level Base: MSL Full Pool: feet: Change Since Yesterday: Feet Level Controlled by: City of Houston Flood waters from at least six other major streams were the primary source (approximately 85%) of flooding. Image: Precinct 1 Montgomery County Commissioner Mike Meador successfully argued, on Tuesday, January 14, , for the Commissioner Court to urge the San Jacinto River Authority (SJRA) to stop lowering the level of Lake Conroe 1 foot in April and May and 2 feet in August and September of each year. All in all, Lake Conroe really did pretty well during the storm. Harris County specified I had to be ' above full pool in order to build it. In extreme storm events such as Hurricane Harvey, Lake Houston is typically fully mixed with low specific conductance water. Hurricane Harvey made landfall near Rockport, Texas, on August 25, , as a Category 4 hurricane with wind gusts exceeding miles per hour. The plan lowers levels to feet above average sea level in the spring starting April 1, with recapture beginning on June 1. Update on Lake Conroe Water Levels and Releases. Lake Conroe reduced rain flow into the West Fork of the San Jacinto River by 40% during Hurricane Harvey. Not all homes that suffered hurricane related damages were due to the rapid flood waters. Houston remarked that the inflow into Lake Conroe reached , cubic feet per second at the height of the storm. Lake Conroe to Kingwood: Look elsewhere for help with flooding. Just 72 hours into the storm, Lake Conroe watershed has received an average of 18 inches of rainfall, forcing the water level to rise feet … Feet MSL. Residents of the Kingwood, Humble, and Atascocita areas are familiar with the finicky nature of Lake Houston water levels on a personal level. Conroe, Texas – August 27th, With approximately six inches of rainfall across the watershed over the past 24 hours, the Lake Conroe water level has risen over seven inches and exceeded normal pool elevation.SJRA operations personnel at the Lake Conroe dam are now beginning controlled releases to slowly pass a portion of the inflows coming into the lake. The amount of water flowing into Lake Conroe was , cu ft per second, and the release rate from the Lake Conroe dam Aug. 28 was 79, cu ft per second. At least five people have died during Hurricane Harvey's assault on the Texas coast and Houston. by Eric Berger. through existing water rights to call water from Lake Conroe and Lake Livingston to meet high demand. The peak water level during this storm event was ' MSL. Homeowners living near the Lake Conroe Reservoir and Dam claim the San Jacinto River Authority and the Texas Water Board intentionally flooded area during Hurricane Harvey and for … Water flows from the Lake Conroe spillway after heavy rain from Hurricane Harvey caused the lake to rise. Water flows from the Lake Conroe spillway after heavy rain from Hurricane Harvey caused the lake to rise. The Conroe Dam releases water from Lake Conroe, Thursday, Aug. 31, , in Conroe. WATER LEVEL. The SJRA is legally obligated to release water to maintain the lake’s water level and protect the dam. SJRA gradually reduces the level of Lake Conroe to ’ mean feet above sea level (msl)—one foot below the normal Lake Conroe pool level of ’ msl. The previous record water level for the lake was ' MSL set in October of strategy for Lake Houston and Lake Conroe. The amount of water from Hurricane Harvey that flowed through the dam was significant, yet by its own calculations, SJRA says that the lake releases contributed only 15% to 18% of the total flows that caused flooding in the Lake Houston area during Harvey. This change became effective on November 19, and required an … – Decrease Lake Conroe’s pooling level to feet above sea level — Use a slow, systematic pre-release of water through the Lake Houston … … Read More • Lake Conroe releases only accounted for % of the water entering Lake Houston and % of “peak flows” entering Lake Houston • While the almost 80, acre feet per second being released from Lake Conroe at its peak was a tremendous quantity of water, Lake Conroe was receiving (via rainfall and run-off) , acre feet per second. The proposed strategy involves the pre-release of water from Lake Houston immediately prior to certain storms and the seasonal lowering of Lake Conroe's water level during the Spring and Fall. SJRA has taken those […] Today's Sale Price. Montgomery County commissioners passed a resolution Tuesday morning, in a vote, opposing any permanent reduction to the water level of Lake Conroe. program. Businesses Open Monday, August 28 during Harvey. Plaintiff Playa Vista Conroe a condominium association suffered property damage during Hurricane Harvey. Covering all or part of seven counties, the organization’s jurisdiction includes the entire San Jacinto River watershed, excluding Harris County. It’s interesting that possibly the biggest impact on Lake Conroe will come 10 months after the historic storm. Q. Pine Branch Dr, Montgomery, TX , Bentwater : Lake Conroe Realty We are giving back $1,, in real estate commissions! Lake Houston Water Level. The datum of this gauge changed from feet NGVD29 to 0 NAVD88, adjustment on May 1, 2. Lake Conroe Water Levels Mike Goins June 21, Harvey , Lake Conroe , Montgomery County Just two days after posting that I was encouraged that the proposal to temporarily reduce Lake Conroe water levels was still not enacted I received word this past Sunday that things were beginning to change. The Lake Conroe watershed’s water levels peaked at ft above average sea level during the storm, according to the San Jacinto River Authority (SJRA). It is estimated that sixteen thousand homes and more than three thousand businesses were flooded during Hurricane Harvey in due to quickly rising Lake Houston water levels that ultimately resulted in flooding. Lake Conroe Water Level. More Than 40 Sites Released Hazardous Pollutants Because of Hurricane Harvey. Hurricane Harvey deposited tremendous amounts of silt in the West Fork of the San Jacinto River. The temporary flood mitigation would be in place for up to two years or until the dredging project is completed. After that, inflow generally increased for the next hours, though the increases were not a straight line. by Eric Berger. WATER LEVEL. Incredible technology integration for … Of course, what we’re seeing is not a lake level reduction for only 2 months. Hurricane Harvey’s widespread 8-day rainfall, which started on August 25, , exceeded 60 inches in some locations, which is about 15 inches more than average annual amounts of rainfall for eastern Texas and the Texas coast. Key statistics show that: 1. By comparison, Lake Conroe was about 12 inches below normal pooling level during … August 28, at am. Lake Conroe started to rise at p.m. on August 26, in response to 1, cfs flowing into the lake. I live on the Lake on Luce Bayou. During Hurricane Harvey, water levels in the Lake Conroe watershed reached a record peak rate of feet above average sea level, according to news release from the SJRA. Harvey late night: Water levels rising across Houston metro area. Thursday, July 22, AM Level is feet above full pool of The peak water level during this storm event was ’ MSL. Close. Fact 3-Lowering the lake by 2 feet moves approximately billion gallons to Lake Houston where it is not needed for any beneficial purpose. The current water level is feet above mean sea level (MSL), which is ’ over the normal pool elevation of ’ MSL. In the fall, releases begin on August 1st. most of Lake Houston has water levels higher than during the drought due to the extra water being added. HOUSTON – Lake Houston and Lake Conroe were built as and remain important parts of the City’s drinking water system.Over 4 million Houstonians and residents in the greater Houston region rely on water provided by the City of Houston. 3. • Lake Houston and Lake Conroe are both water supply reservoirs • Very limited capacity to lake level rise, and discharges ~, cfs Water detained in Lake Conroe Discharge from • During Harvey, peak elevation was ’ msl. Lake Conroe TX Dam Release from Hurricane Harvey Flood Rain. Rain has continued, ” forecasted tonight, we continue to watch the storm. Andrew Hutchinson ACOM 2/14/19 Officials Approve Lowering Water Levels in Lakes Conroe and Houston to Learn about our C.A.R.E.S. Find … SJRA gradually reduces the level of Lake Conroe to ’ mean sea level (msl)—one foot below the normal Lake Conroe pool level of ’ msl. Spring seasonal lowering will continue as it has in the past two years to feet mean sea level from April 1-May 31 and recapture will begin June 1. the Hurricane Harvey event, the peak flowrate coming into Lake Conroe was approximately , cfs. Residents in the area should still be cautious, however. Lake Conroe Water Level. WATER LEVEL. Feet MSL. Thursday, May 6, AM. Level is feet. above full pool of Preparing lake level chart The maximum flow out of Lake Conroe, which the SJRA released during Tropical Storm Harvey, was 79, cubic feet per second. According to an Aug. 28 press release from the SJRA, the peak water level during the storm was ft above mean sea level. Fall lowering would begin Aug. 1, lowering the lake to ft. Beginning Sept. 1, it would be further lowered to ft.—instead of ft. as has been in effect. (In fact, it beat the previous record by a full foot: the prior flood raised the level from feet to —Harvey raised it to ). Lake Conroe closes due to high water levels. Monday, August 28, @ AM CDT May 3, , AM. The current release rate from the Lake Conroe … August 31, at pm. On Sept. 1, dredges will start work in the first major project to result from Harvey: cleaning out a 2-mile stretch of the west fork of the San Jacinto River, which connects lakes Houston and Conroe. In the spring, releases begin on April 1st. Lake Conroe. Friday, July 23, PM Level is feet below full pool of The San Jacinto River Authority (SJRA) is a public entity created by the Texas Legislature whose mission is to develop, conserve, and protect the water resources of the San Jacinto River basin. The peak water level during this storm event was ’ MSL. Anyone interested in monitoring Lake Conroe levels, releases, rainfall totals, or stream flows can We did not have that benefit during Harvey when we had all gates open well before the storm Thursday, August 25, Completed in , it has a capacity of , acre-feet, about 12% of Oroville Dam in California. located well downstream of Lake Conroe during Hurricane Harvey. View Water usage.docx from WUFLAW at Louisiana State University. WATER LEVEL. During Harvey, the peak flow coming into Lake Conroe was approximately , cubic feet per second, while the peak release rate … Details. Were we in a drought, we may well be looking at lake levels down 3 to 4 feet. LAKE CONROE PROPERTIES DAMAGED ALONG THE LAKE AFTER HARVEY. Follow @USGS_TexasFlood and @USGS_TexasRain on Twitter to get current water level and precipitation data during flooding or severe rainfall events. The San Jacinto River Authority announced the lake will reopen "normal lake traffic" Monday. Show … A new record pool elevation of ft was recorded for Lake Conroe surpassing the previous record pool of … Residents pack a public hearing in a Conroe convention center in a fight over lake levels during hurricane season. Sole S77 Treadmill. When “water damage” and “Hurricane Harvey” are in the same sentence most think of raging rising flood waters. Lake Conroe has a normal water level of feet. Thursday, July 22, AM Level is feet above full pool of Houston Water, San Jacinto River Authority & Coastal Water Authority have released an operations plan to lower water levels in Lake Houston and Lake Conroe in an effort to prevent flooding. The SJRA is legally obligated to release water to maintain the lake’s water level and protect the dam. Flooding of several homes on the lake and many docks either under water or destroyed. Recorded highest water level in the lake history was on October 19, From April 1 to May 31, it will be reduced and maintained at feet, and from Aug. 1 to Sept. … Engineering studies prove this and none of the recommendations addressing flooding problems in the Lake Houston area identify Lake Conroe as a cause of flooding. Monday, am CT —Nearly every bayou, river, stream, and waterway in and around Harris County has reached the top of its banks, or exceeded them. Harvey update: Rain forecast, River update, and “another hurricane” rumors. Harvey made landfall late at night on Aug. 25 and lashed the city for almost three days, causing extensive flooding and damage in much of its path. The previous record water level for the lake was ’ MSL set in October of During Harvey, water levels in the Lake Conroe watershed reached a peak of feet above average sea level, exceeding the previous record of feet in , according to a … Lake Houston Water Level. The volume of water which passed through Lake Houston at its peak elevation during Harvey was almost , acre feet, so the impact of the pre-release was less than %. (1) ft on 08/20/ (2) ft on 04/29/ (3) ft on 08/28/ Show More Low Water Records For more information on your flood risk go to www.floodsmart.gov . Houston, by law, controls the disposition of two-thirds of the water in Lake Conroe and it is the city that makes the final decision in these matters. Fact 1 – Lowering the lake will not prevent downstream flooding. The board ultimately voted to change the fall lowering while keeping the spring lowering the same. 73, Cubic Foot per Second Release. The volume of water which passed through Lake Houston at its peak elevation during Harvey was almost ,acre feet, so the impact of the pre-release was less than %. Saturday, July 24, PM Level is feet above full pool of Preparing lake level chart Level Base: MSL Full Pool: feet: Change Since Yesterday: Feet Level Controlled by: City of Houston Our goal is to create a safe and engaging place for users to connect over interests and passions. Add to Cart. THE WOODLANDS - Harvey Breaking News, Weather Updates, and important information for The Woodlands and Montgomery County in Texas. Advertisement Starting on June 1st, SJRA recaptures flows to restore normal lake elevation to ’ msl. According to an Aug. 28 press release from the SJRA, the peak water level during the storm was ft above mean sea level. That means the SJRA released unprecedented levels of runoff before they were at capacity. Did the extra water in the San Jacinto River from the Lake Conroe releases during Harvey cause Spring and Cypress Creeks to backup? App provides advanced features of a Marine Chartplotter including adjusting water level protect. 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Sours: http://crm.idtek.com.vn/app/protected/runtime/vh1nab/viewtopic.php?id=lake-conroe-water-level-during-harvey

The seasonal lowering of Lake Conroe will continue, following a vote Thursday night by the San Jacinto River Authority.

After several hours of public debate, the SJRA board voted to continue lowering water levels. A pair of public meetings on the issue drew hundreds of residents from Lake Conroe and areas downstream like Kingwood and Lake Houston, which experienced extensive flooding during Hurricane Harvey.

Downstream residents say lower water levels help mitigate flooding, while Lake Conroe residents argue low levels hurt property values and recreation on the lake.

The adopted plan lowers Lake Conroe once in the spring and again in the fall and is largely similar to one put forward by Houston officials.

The plan lowers levels to feet above average sea level in the spring starting April 1, with recapture beginning on June 1. Fall lowering will bring the lake to feet starting Aug. 1, then to feet in September. Fall recapture begins Oct. 1.

The plan leaves room for the city of Houston, a majority owner of the lake&#;s water rights, to ask for additional lowering to feet if a named storm is expected to enter the region within a five-day forecast.

Controversy has surrounded Lake Conroe since a temporary lowering plan began in to facilitate dredging along the West Fork of the San Jacinto River.

Chris Paul/Houston Public Media

Chris Paul/Houston Public Media

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Sours: https://www.houstonpublicmedia.org/articles/news/flooding//02/21//lake-conroe-lowering-to-continue-in-effort-to-fight-flooding/
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Lake Conroe (San Jacinto River Basin)

Lake Conroe and Dam with Spillway in operation (Photo by owner)Lake Conroe is located approximately seven miles northwest of Conroe, on the West Fork of the San Jacinto River in Walker and Montgomery Counties. The water rights to Lake Conroe are owned by the San Jacinto River Authority and the City of Houston. The lake and dam facility are maintained by the San Jacinto River Authority. Certificate of Adjudication was granted to the City of Houston, the San Jacinto River Authority and the Texas Water Development Board to maintain and use the lake. Lake Conroe was built as an alternate water supply for the city of Houston. Freese, Nichols and Endress Engineering Inc. designed the project and H. B. Zachery Company was the general contractor.

The lake was completed January and was filled on October 31, Conroe Dam is an earthfill embankment, 11, feet in length including the levees. The crest elevation of the dam is feet above mean sea level and has a height of 82 feet above the old riverbed. A controlled emergency spillway is located near the center of the embankment. The spillway is a concrete ogee crest, feet in length with a crest elevation of feet above mean sea level. Control for the spillway consists of five tainter gates, 40 feet in width by 30 feet in height with the top elevation of feet. Low flow releases are made through a separate multi-gated inlet tower. Two of the gates are four feet by six feet, the third gate is five feet by five feet. The invert for the lowest outlet in the control tower is Discharges are through a 10 foot diameter concrete conduit through the dam. Maximum design water surface may reach to feet above mean sea level. Recorded highest water level in the lake history was on October 19,

According to TWDB volumetric survey, at the conservation capacity pool elevation of feet above mean sea level, the lake has approximately 19, acres of water surface and a storage volume of , acre feet. Inflows to the lake originate from a drainage area of about square miles.

Additional Information

Sours: https://www.twdb.texas.gov/surfacewater/rivers/reservoirs/conroe/index.asp
2017 Hurricane Harvey Lake Conroe TX Dam Release

Lake Conroe reopens after weekend closure due to high water levels

CONROE, Texas (KTRK) -- Lake Conroe is set to reopen to normal activities Monday after having closed all motorized boat traffic Sunday due to hazardous water conditions, according to authorities.

The San Jacinto River Authority announced the lake will reopen "normal lake traffic" and activities at noon.

Lake Conroe had been closed due to high water levels, submerged objects, floating debris, and other hazards that could put people at risk.

WATCH: Boaters spot water spilling over the banks of Lake Conroe hours before closure


Officials said the lake level had risen nearly two feet above the normal pool level after up to five inches of rain fell in a span of several hours.

Boaters are still urged to use extreme caution when out on the lake because there may still be some floating debris and submerged objects that are difficult to see, according to local authorities. Lake area residents should also be aware of electrical outlets and equipment potentially coming into contact with water.

SEE MORE: More rain moves in, Flood Advisory issued for parts of the Houston area

You can check the most up-to-date lake levels on the San Jacinto River Authority website.

The video above is from a previous story.
Sours: https://abccom/lake-conroe-reopening-closing-levels-floods//

Level water lake conroe

What Happened Downstream During Harvey as Lake Conroe Released 79, CFS

Last night, I posted some statistics about Lake Conroe levels after the SJRA started the release during Hurricane Harvey. Tim Garfield and R.D. Kissling, two top geologists, now retired from one of the world&#;s largest oil companies, have looked at the release from a downstream perspective. Last year, they put everything they learned into this page presentation delivered to the University of Houston Honors Program.

Recap of Key Points About Lake Conroe Release

To recap several key points:

  • The SJRA never did let Lake Conroe rise to its allowable flowage easement. The water level in Lake Conroe peaked at 7 a.m., August 28, , at feet. The SJRA&#;s flowage easement is feet.
  • Outflow exceeded inflow by a.m. on the 28th and stayed that way for the duration of the storm. As the lake level declined, the lake had up to 3 available feet of storage capacity.
  • Yet the SJRA kept releasing, on average, 2X &#; 10X more water than it was taking in. At one point, the ratio exceeded

Tracking the Release Down West Fork

Garfield notes that the discharge ramp up that began the evening of the 27th reached a peak discharge rate of more than 79, cubic feet per second (cfs) just before noon on the 28th. The discharge rate didn&#;t dip below 70, cfs until 4 a.m. on the 29th – more than 16 hours later.

Following in lockstep with the Conroe release, flow rates at downstream gauges ramped up, in lockstep. By lining up the peaks of gages downriver, you can literally see the water surging down the West Fork all the way to Lake Houston. (See left side of image above.)

Significantly, Garfield says, these gauges all showed flattening flow-rate curves before the release ramp up. Those curves then turned and steepened upward as the Conroe release pulse arrived at those gauges.


Timing and Impact of Release in Lake Houston Area

Peak flow at the Humble gauge was reached shortly after noon on the 29th, roughly 24 hours after peak discharge was reached at the dam and roughly 30 hours after the high-rate release ramp up began.

Water started creeping under the doors of Kingwood Village Estates, a senior living center in Kingwood Town Center about miles from the West Fork, at 3 a.m., on August 29th, It kept rising all morning and finally stopped another mile further inland. Water entered the last (highest) house to flood in Kings Point (the Kingwood subdivision closest to the main body of Lake Houston) at 2 p.m. that same day, according to Elise Whitney Bishop.

Residents trying to escape as Harvey&#;s floodwaters rose

The level of upper Lake Houston, as measured at US59, rose an additional 7 feet during this period.

Significant additional flooding of Kingwood homes can be tied to this same period of increased discharge.

Flow rates measured at the Grand Parkway gauge and calculated at the Humble gage indicate a flow rate increase in this period of between 70, to 80, cfs, corresponding closely to the 79,+ peak flow rate added by the Conroe dam discharge.

&#;The data from the affidavits further supports several key conclusions from the Harvey Flood Fundamentals section of our University of Houston talk,&#; said Garfield. Those include:

  • The large sustained release from Lake Conroe made West Fork flooding worse. The extra 80, cfs increased the West Fork flow 50%.
  • The release occurred as the storm was abating. It significantly increased flood damage in the Lake Houston area.

The list of damages ran well over a billion dollars.

The SJRA Argument

The SJRA maintains to this day that Lake Conroe is a water-supply reservoir, not a flood-control reservoir. See the affidavits of Hector Olmos and Chuck Gilman. Olmos is a consultant who helped design the operations manual for the gates at Lake Conroe. Gilman is the SJRA&#;s Director of Flood Management, hired the year after Harvey.

They are basically claiming, &#;We don&#;t have the right tool to prevent downstream flooding.&#;

Editorial Opinion

Editorial opinion: That excuse has always sounded hollow to me. It attempts to curtail discussion of whether the SJRA waited too long to start releasing water, released too much at the peak, and then kept on releasing too much for days.

That discussion is a matter of public concern that could save lives and property in the future. We need to have it.

Sadly, it will take the courts to figure this out. In the meantime, the SJRA has hired some of the highest priced lawyers in the country and now appears to be angling for legislative immunity by hinting at higher water prices &#;statewide&#; if liability can&#;t be controlled.

It all smacks of similar arguments in other industries. If you&#;ve lived long enough, you&#;ve heard them all before, such as car companies that would be driven out of business if forced to install seat belts and other safety features. Well, that prediction didn&#;t quite work out! Luckily, for General Motors, the addition of safety features helped fuel its resurgence.

Posted by Bob Rehak on 6/12/with thanks to Tim Garfield and RD Kissling

Days after Hurricane Harvey

The thoughts expressed in this post represent opinions on matters of public concern and safety. They are protected by the First Amendment of the US Constitution and the Anti-SLAPP Statute of the Great State of Texas.

Tags:Chuck Gilman, Garfield, Hector Olmos, Hurricane Harvey, Kingwood Village Estates, Kissling, Lake Conroe release, liability, San Jacinto West Fork, SJRA, University of HoustonSours: https://reduceflooding.com//06/11/what-happened-downstream-during-harvey-as-lake-conroe-releasedcfs/
Lake Conroe water level 9/15/11

CONROE, TX – Lake Conroe is being closed temporarily starting at noon this Saturday after two days of heavy rain in the area has caused lake levels to rise above safe levels.

According to the San Jacinto River Authority, roughly five inches of rain in the past several hours across the region has made its way to Lake Conroe, raising the lake level to feet. While the rainfall has only caused Lake Conroe to rise 2 feet, the level is enough to cause hazards to boaters due to submerged objects.

“At this level, many docks, bulkheads, small islands, and other structures are fully submerged and can create a dangerous situation for boaters,” said the SJRA in a press release. “In addition, high winds and rapidly-flowing water from local streams can result in a large amount of floating debris on the reservoir. With bulkheads becoming submerged, lake area residents should also be cautious of electrical outlets and equipment coming into contact with water.”

The Precinct 1 Constable’s Office and San Jacinto River Authority is monitoring the Lake Conroe levels and future weather forecasts for the weekend. According to the SJRA’s Lake Conroe portal, water is being released from the Lake Conroe dam at a rate of 8, cubic feet per second in order to “gradually lower” the lake levels back to feet.

The closure of Lake Conroe begins at p.m., Saturday, May 1, ; however, there is no available window as to when Lake Conroe will resume normal operations. Until the Lake has been reopened, do not use boats or go swimming in Lake Conroe.


Sours: https://emcgazette.com/lake-conroe-closing-at-noon-due-to-high-water-levels-debris-risk-phtm

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Lake Conroe to reopen at noon following high water levels, other potential safety risks

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CONROE, Texas – The San Jacinto River Authority (SJRA) and Montgomery County Constable Precinct 1 have announced that Lake Conroe will reopen at noon after being closed as a result of the heavy rain that pushed through the area Friday and overnight into Saturday.

According to the announcement, the lake closed because the rain created issues like “high lake levels, the possibility of submerged objects, floating debris, and other hazards that could pose safety risks.”

The SJRA is working to release water from the dam in order to get the water back to the normal level. SJRA and Montgomery County Constable Precinct 1 said they will monitor any additional rainfall events throughout the weekend.

As of p.m. Sunday, the lake remained about two feet above the normal level, according to SJRA. Officials said the water was released at a safe and steady rate.

“The LC Watershed received an avg of just over 1 (inch) of rain in the last 24 hrs. With already saturated soils, there is considerable runoff into the reservoir,” the agency wrote on Twitter.

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The announcement said in part:

“With basin-wide rainfall up to five inches in a span of several hours, rainfall and resulting runoff has positioned the lake level at approximately two feet over the lake’s normal conservation pool of ′ mean sea level (msl). At this level, many docks, bulkheads, small islands, and other structures are fully submerged and can create a dangerous situation for boaters. In addition, high winds and rapidly-flowing water from local streams can result in a large amount of floating debris on the reservoir. With bulkheads becoming submerged, lake area residents should also be cautious of electrical outlets and equipment coming into contact with water.”

For additional information, visit SJRA’s website at www.sjra.net or call the Montgomery County Constable Precinct 1 at

Copyright by KPRC Click2Houston - All rights reserved.


Sours: https://www.click2houston.com/news/local//05/01/lake-conroe-closed-due-to-high-water-levels-other-potential-safety-risks/


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