DOCSLIB.ORG

Houston-Galveston Bay Area, Texas, from Space—A New Tool For

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Houston-Galveston Bay Area, Texas, from Space—A New Tool For FS_110-02.fmPage1Friday,December20,20021:01PM In cooperation with the U.S. Fish and Wildlife Service Houston-Galveston Bay Area, Texas, From Space— A New Tool for Mapping Land Subsidence Interferometric Synthetic Aperture Radar (InSAR) is a powerful new tool that uses radar signals to measure displacement (subsidence and uplift) of the Earth's crust at an unprecedented level of spatial detail and high degree of measurement resolution. The Houston-Galveston Bay area, possibly more than any other metropolitan area in the United States, has been adversely affected by land subsidence. Extensive TEXAS subsidence, caused mainly by ground-water pumping but also by oil and gas extraction, has increased the frequency of flooding, caused extensive damage to industrial and transportation infrastructure, motivated Lake Livingston A N D S N U P L major investments in levees, reservoirs, and surface- L T A S water distribution facilities, and caused substantial loss A O of wetland habitat. Ongoing patterns of subsidence in C T Subsidence study area R I N the Houston area have been carefully monitored using I T Y S D borehole extensometers, Global Positioning System N AR (GPS) and conventional spirit-leveling surveys, and L I Lake Houston V W E O R more recently, an emerging technology—Interferomet- L ric Synthetic Aperture Radar (InSAR)—which enables development of spatially-detailed maps of land-surface Houston L displacement over broad areas. A T Galveston S Bay This report, prepared by the U.S. Geological Survey A O Texas City Galveston (USGS) in cooperation with the U.S. Fish and Wildlife C Service, briefly summarizes the history of subsidence Extent of two in the area and the local consequences of subsidence satellite scenes used in the study GULF OF MEXICO and describes the use of InSAR as one of several tools 0 20 MILES in an integrated subsidence-monitoring program in the 0 20 KILOMETERS area. Figure 1. Subsidence study area and extent of two satellite scenes, Houston-Galveston Bay area, Texas. Land subsidence in the Houston-Galveston Bay area (fig. 1) terns of subsurface fluid extraction. Subsidence caused by oil and first occurred in the early 1900s in areas where ground water, oil, gas extraction typically is restricted locally to the field of produc- and gas were extracted. Subsidence continued throughout the 20th tion such as at Goose Creek oil field, in contrast to the regional- century, primarily owing to compaction of the aquifer systems scale subsidence typically caused by ground-water pumpage caused by ground-water pumpage and the associated ground- (Coplin and Galloway, 1999). water-level declines. More than 10 feet (ft) of subsidence was measured near Pasadena during 1906–95, and almost 3,200 square Until 1942, essentially all water demand in Houston was miles (mi2) had subsided more than 1 ft (fig. 2) The patterns of supplied by local ground water. By 1943, subsidence had begun subsidence in the area closely follow the temporal and spatial pat- to affect a large part of the Houston area, although the amounts U.S. Department of the Interior USGS Fact Sheet 110–02 U.S. Geological Survey December 2002 in the coastal area was stabilizing, subsidence inland was continu- T 45 R ing, especially in the rapidly growing areas north and west of I N I Houston that mostly are still dependent on ground water (fig. 3). Harris-Galveston T N Y Coastal1 Subsidence District R In this region ground-water levels in the Evangeline aquifer I 2 3 4 V E declined more than 100 ft during 1977–97, and 2.3 ft of subsid- 5 R 6 San Jacinto ence was measured near Addicks (fig. 3) between 1978 and 1995 Monument Houston Ship Channel 10 (Coplin and others, 2001). During the 1989 legislative session, the 10 Fort Bend Subsidence District (fig. 2) was created to manage and Houston 6 9 Baytown Pasadena control subsidence in Fort Bend County. 7 9 Fort Bend 8 Goose Creek 7 oil field Subsidence District 6 Consequences of Land Subsidence Galveston 5 4 Bay Land subsidence in the Houston-Galveston Bay area has R E 3 V I 4 increased the frequency and severity of flooding (fig. 4). In this R Texas City S 2 low-lying coastal environment, more than 10 ft of subsidence O 6 Z A (fig. 2) has shifted the position of the coastline and changed the R B 1 Galveston distribution of wetlands and aquatic vegetation. In fact, the San Lines of equal subsidence (interval 1 foot) Jacinto Battleground State Historical Park, site of the battle that 0 20 MILES Galveston 0 20 KILOMETERS Island GULF OF MEXICO won Texas independence and commemorated with the San Jacinto Monument (fig. 2), is now partly submerged. At many localities in Figure 2. Extent of subsidence in the Houston-Galveston Bay area the Houston area, ground-water pumpage and subsidence also during 1906–95. have induced fault movement. Since the late 1930s, 86 active faults in the Houston area have offset the land surface and dam- generally were less than 1 ft. By the mid-1970s, 6 ft or more of aged buildings and highways in the metropolitan area (Holzer and subsidence had occurred throughout an area along the Houston Gabrysch, 1987; Coplin and Galloway, 1999). Ship Channel between Baytown and Houston as a result of Near the coast, the result of land subsidence is an apparent declining ground-water levels caused by increased ground-water increase in sea level, or a relative sea-level rise—the net effect pumpage associated with rapid industrial expansion in the area. of global sea-level rise and regional land subsidence in the coastal Growing awareness of subsidence- zone. The sea level is in fact rising because related problems on the part of community of regional and global processes. The Annual 0.2 combined effects of the eustatic sea-level and business leaders prompted the 1975 pumpage rise and natural consolidation of the sedi- Texas Legislature to create the Harris- (millions of Galveston Coastal Subsidence District acre-feet) ments along the Texas Gulf Coast yield a (fig. 2), “. for the purpose of ending sub- 0 relative sea-level rise from natural causes sidence which contributes to, or precipi- 1976 1981 1986 1991 1996 that locally might exceed 0.08 inch (in.) tates, flooding, inundation, and overflow of Pumpage in northwestern zones per year (Paine, 1993). Although global any area within the District . .” (State of of the subsidence district warming is contributing to the present- Texas, 1975, p. 672). This unprecedented day sea-level rise and might result in a sea- subsidence district was authorized to issue Harris-Galveston level increase of nearly 4 in. by 2050 (Titus Coastal Subsidence and Narayanan, 1995), human-induced (or refuse) well permits, promote water 1 District conservation and education, and promote 2 subsidence, by far, has been the dominant 3 conversion from ground-water supply to Houston Ship Channel cause of relative sea-level rise along the surface-water supply, but the district was Addicks Baytown Texas Gulf Coast during the 20th century, forbidden to own property such as water- Houston exceeding 1 in. per year throughout much supply and conveyance facilities. Pasadena of the affected area (Coplin and Galloway, 1999). The initial Subsidence District reg- ulatory plan (1976) was designed to have Texas City Galveston Bay is one of the most “. an immediate impact in the area where Line of equal land important bay ecosystems in the United most of the subsidence had taken place subsidence, 1978–95 States. The estuary is Texas’ leading bay (Interval 0.5 foot) . .” (Harris-Galveston Coastal Subsid- 0 20 MILES fishery, and it supports vibrant recreation ence District, 1999, p. 3). The plan gener- 0 20 KILOMETERS and tourism industries. More than 60 per- cent of the bay’s 232 miles (mi) of shore- ally has succeeded in its primary objective: Pumpage in southeastern Since the late 1970s, subsidence largely zones of the subsidence line is composed of highly productive has been abated along the ship channel district wetlands; because of subsidence, however, and in the Baytown and Pasadena areas more than 26,000 acres of emergent wet- in the coastal lowlands south and east of Annual 0.2 lands have been converted to open water Houston owing to a reduction in ground- pumpage and barren flats (White and others, 1993). (millions of Subsidence also has contributed to an water pumpage (fig. 3). Surface water acre-feet) from Lake Livingston on the Trinity River 0 appreciable loss of submerged aquatic (fig. 1) was used as a source of water for 1976 1981 1986 1991 1996 vegetation (mostly seagrass) since the 1950s. Some bay shorelines have become industrial use in the area of the Houston Source: Harris-Galveston Coastal Subsidence District Ship Channel (fig. 2). The additional water more susceptible to erosion by wave supplied by Lake Livingston was sufficient Figure 3. During 1978–95, subsidence in areas action because of loss of wetlands. As sea southeast of Houston essentially ceased as level rises, marshes along the shoreline are to appreciably reduce ground-water use and pumpage there decreased; and subsidence ultimately led to a recovery of water levels continued in areas northwest as pumpage there drowned. When development is located over a large area. However, as subsidence increased. near the shoreline, the potential for the 2 maps of relative surface displacement constructed from InSAR data—have demonstrated strong potential for high-density spatial mapping of ground-surface displacement (Galloway and others, 2000). Areas that include stable reflectors may appear as coherent or correlated colors or groups of colors in the interferogram.
Load more

Recommended publications
  • Chapter 7 100 Years of Groundwater Use and Subsidence in the Upper
    Chapter 7 100 Years of Groundwater Use and Subsidence in the Upper Texas Gulf Coast Thomas A. Michel1 Introduction Imagine yourself more than a hundred years ago, living in southeastern Texas. You would have faced many challenges, among others: 100 degree temperatures and 80 percent humidity in the summers, ruthless mosquitoes, roaming alligators, and a whole host of other challenges of the early 20th century that we do not worry about today. One challenge that residents of Galveston, Houston, and the surrounding area did not have to face was water. Water was already distributed throughout the area, underground, in what is today referred to as the Gulf Coast Aquifer System. It was only necessary to drill a shallow well and clean groundwater would flow from the well, even without a pump to withdraw it. Water was abundant. Today, in the early 21st century, we have air conditioners that counteract the heat and humidity of the summer months, government trucks that spray pesticides to greatly reduce the mosquito population, and for whatever reasons the alligators don’t seem to roam the streets of downtown Houston as they once did. Oh, how the times have changed. As the population grew throughout the last century and industries blossomed, the demand for water increased greatly. Unlike 100 years ago, one of our greatest challenges today is our water supply. You can’t just drill a shallow well today in your backyard anymore and expect clean, fresh water to come bubbling up. In today’s greater Houston area, groundwater still is utilized by many people, but surface water is the predominant supply.
    [Show full text]
  • Grand Cay Harbour
    GRAND CAY HARBOUR David Kendall Senior Advisor 561.723.8463 [email protected] Tony Roubik #319384 Managing Director 713.858.1144 [email protected] SVN | FLORIDA COMMERCIAL REAL ESTATE ADVISORS | 810 SATURN STREET, #24, JUPITER, FL 33477 OFFERING MEMORANDUM PROPERTY INFORMATION 3 Property Summary Property Description Complete Highlights LOCATION INFORMATION 7 Aerial Retailer Map Nearby Marinas Major Employers Regional Map Site Plan DEMOGRAPHICS 14 Demographics Map ADDITIONAL INFORMATION 16 MARINA TRACT Grand Cay Harbour Levee Additional Photos Utilities GRAND CAY HARBOUR | TEXAS CITY, TX 77590 OFFERING MEMORANDUM 1 PROPERTY INFORMATION Texas City, TX GRAND CAY HARBOUR | _ TEXAS CITY, TX SVN | Florida Commercial Real Estate Advisors | Page 3 Property Description PROPERTY OVERVIEW Along a well protected portion of Galveston Bay shoreline, fronting some of Texas' premier seaways with verdant nearby wildlife preserves, a new coastal village is taking shape. With panoramic views in every direction and superb direct water access to the Gulf of Mexico, Grand Cay Harbour is a boater’s and bay lover’s paradise. The Gulf of Mexico is only minutes away by boat via the Galveston Bay Entrance. This 55 acre development site is permitted for a deep water marina with approximately 300 wet slips. The remaining upland can be developed with fairly liberal zoning usage. Adjacent to this tract, David Weekley Homes is currently building homes in the $350 - $900k price range. Some potential uses for this property include construction of a marina, dry boat storage facility, restaurant(s), hotel, 3-story apartment project, townhomes, mid-rise condos, or a resort type use. The property is protected from storm surge via a 23' flood levee with a control gate that provides access to Galveston Bay and the Gulf of Mexico.
    [Show full text]
  • 29.76 Acres at Clear Lake City Blvd & Middlebrook Dr
    ±29.76 ACRES AT CLEAR LAKE CITY BLVD & MIDDLEBROOK DR BROKER CONTACT: JP Hayes, Senior Vice President | [email protected] | 713.955.4473 GENOA RED BLUFF RD SP A CE C E NT E R BAYPORT INDUSTRIAL DISTRICT B L ±11,000 EMPLOYEES V D RED BLUFF RD THE RESERVE AT CLEAR LAKE TRACT 1 773 HOMES 16.64 ACRES ACCESS ±29.76 EASEMENT ELLINGTON CLEAR LAKE MARKETPLACE AIRPORT TRACT 2 ACRES 13.12 ACRES ARMAND BAYOU BROCKWOOD NATURE CENTER VD BL ELEMENTARY Y IT SCHOOL C E K M A BLVD I L D A RE D R A L Y A BA E E L B BAY AREA C R O PARK O K D R S PA C E UH - CLEAR LAKE C E ±9,500 STUDENTS N T & STAFF E CLEAR LAKE R B HIGH SCHOOL LV ±2,500 STUDENTS D & STAFF dmre.com 1 PROPERTY DETAILS Clear Lake City Blvd & Middlebrook Dr ADDRESS Pasadena, TX 77059 LAT., LONG. 29.609983, -95.107591 SIZE ±29.76 Acres UTILITIES Available – Clear Lake City Water Authority Clear Creek ISD: Brockwood Elementary School SCHOOLS Space Center Int Clear Lake HS TRACT 1: 0410200000031 PARCEL ID TRACT 2: 0410200000030 OWNER JAKS CLEAR LAKE LP PRICE TBD by Market TRACT 1: 2 story height restriction RESTRICTIONS TRACT 2: 3 story height restriction TRACT 1: TR 1E ABST 64 J ROUTH LEGAL TRACT 2: TR 1D ABST 64 J ROUTH DETENTION Onsite FLOOD ZONE Located in the 500 year floodplain. TRACT 1: 200 units ENTITLEMENT TRACT 2: 200 units dmre.com 2 2019 DEMOGRAPHICS 0-1 mile 0-3 miles 0-5 miles 2019 POPULATION ESTIMATE 7,410 40,324 153,501 5-YR EST.
    [Show full text]
  • San Jacinto Battleground and State Historical Park: a Historical Synthesis and Archaeological Management Plan
    Volume 2002 Article 3 2002 San Jacinto Battleground and State Historical Park: A Historical Synthesis and Archaeological Management Plan I. Waynne Cox Steve A. Tomka Raba Kistner, [email protected] Follow this and additional works at: https://scholarworks.sfasu.edu/ita Part of the American Material Culture Commons, Archaeological Anthropology Commons, Environmental Studies Commons, Other American Studies Commons, Other Arts and Humanities Commons, Other History of Art, Architecture, and Archaeology Commons, and the United States History Commons Tell us how this article helped you. Cite this Record Cox, I. Waynne and Tomka, Steve A. (2002) "San Jacinto Battleground and State Historical Park: A Historical Synthesis and Archaeological Management Plan," Index of Texas Archaeology: Open Access Gray Literature from the Lone Star State: Vol. 2002, Article 3. https://doi.org/10.21112/ita.2002.1.3 ISSN: 2475-9333 Available at: https://scholarworks.sfasu.edu/ita/vol2002/iss1/3 This Article is brought to you for free and open access by the Center for Regional Heritage Research at SFA ScholarWorks. It has been accepted for inclusion in Index of Texas Archaeology: Open Access Gray Literature from the Lone Star State by an authorized editor of SFA ScholarWorks. For more information, please contact [email protected]. San Jacinto Battleground and State Historical Park: A Historical Synthesis and Archaeological Management Plan Creative Commons License This work is licensed under a Creative Commons Attribution-Noncommercial 4.0 License This article is available in Index of Texas Archaeology: Open Access Gray Literature from the Lone Star State: https://scholarworks.sfasu.edu/ita/vol2002/iss1/3 San Jacinto Battleground State Historical Park A Historical Synthesis and Archaeological Management Plan by I.
    [Show full text]
  • Houston, Texas 1973-87
    NOMTechnical Report NOS 131 NGS 44 Subsidence at Houston, Texas 1973-87 Sandford R. Holdahl Joseph C. Holzschuh David B. Zilkoski Rockville, MD August 1989 U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Chatting and Geodetic Services NOAA TECHNICAL PUBLICATIONS National Ocean Service/National Geodetic Survey Subseries The National Geodetic Survey (NGS), Office of Charting and Geodetic Services, the National Ocean Service (NOS), NOM, establishes and maintains the basic national horizontal, vertical, and gravity networks of geodetic control, and provides Government-wide leadership in the improvement of geodetic surveying methods and instrumentation, coordinates operations to assure network development, and provides specifications and criteria for survey operations by Federal, State, and other agencies. NGS engages in research and development for the improvement of knowledge of the figure of the Earth and its gravity field, and has the responsibility to procure geodetic data from all sources, process these data, and make them generally available to users through a central data base. NOAA geodetic publications and relevant geodetic publications of the former U.S. Coast and Geodetic Survey are sold in paper form by the National Geodetic Information Branch. To obtain a price list or to place an order, contact: National Geodetic Information Branch (N/CG174) Charting and Geodetic Services National Ocean Service National Oceanic and Atmospheric Administration Rockville, MD 20852 Telephone: 1 301 443 8631 When placing an order, make check or money order payable to: National Geodetic Survey. Do not send cash or stamps. Publications can be charged to Visa or Master Card, or purchased over the counter at the National Geodetic Information Branch, 11400 Rockville Pike, Room 24, Rockville, MD.
    [Show full text]
  • City Manager's Friday Morning Memo
    CITY MANAGER’S FRIDAY MORNING MEMO OCTOBER 30, 2020 ADMINISTRATION • November 3, 2020 Election: Today (October 30th) is the last day of early voting. The nearest early voting polling location for City of Nassau Bay residents is the Clear Lake Islamic Center - Community Hall (17511 El Camino Real). On Election Day, the Nassau Bay City Hall Council Chamber (1800 Space Park Drive, Suite 200) will be a polling place with hours of operation from 7:00am to 7:00pm. All Election Day polling locations are open to all eligible voters in Harris County. Click here for a sample ballot for Nassau Bay residents: Precinct 307 (Nassau Bay) Sample Ballot. Reminder: If you possess one of the following forms of acceptable photo ID, you must present it when voting in person: Texas Driver License, Texas Election Identification Certificate, Texas Personal Identification Card, Texas Handgun License, United States Military Identification Card, United States Citizenship Certificate or a United States Passport (book or card). If you do not possess and cannot reasonably obtain a photo ID, you may still cast a regular ballot by presenting a supporting form of ID and executing a Reasonable Impediment Declaration. • Administrative Offices Working Remotely: Due to the influx of visitors to Nassau Bay City Hall on Election Day, administrative staff will be working remotely on November 3rd and November 4th. The City Hall phone line remains operational and will be answered (281-333- 4211). The Nassau Bay Police Department, Public Works, and Fire & EMS Departments remain operational without interruption. • Nassau Bay Honors Our Veterans: The Nassau Bay’s Special Event Committee will be honoring our Nassau Bay Veterans with Nassau Bay Loves Our Veterans yard signs in and around the community.
    [Show full text]
  • D R a F T Minutes of the Regular Meeting of the City Council of the City of Baytown
    D R A F T MINUTES OF THE REGULAR MEETING OF THE CITY COUNCIL OF THE CITY OF BAYTOWN May 08, 2014 The City Council of the City of Baytown, Texas, met in a Regular Meeting on Thursday, May 08, 2014, at 6:30 P.M. in the Council Chamber of the Baytown City Hall, 2401 Market Street, Baytown, Texas with the following in attendance: Brandon Capetillo Council Member Robert Hoskins Council Member Chris Presley Council Member Mercedes Renteria Council Member Terry Sain Council Member David McCartney Mayor Pro Tem Robert D. Leiper City Manager Ron Bottoms Deputy City Manager Kevin Troller Assistant City Manager Ignacio Ramirez City Attorney Leticia Brysch City Clerk Keith Dougherty Sergeant at Arms Mayor Pro Tem McCartney convened the May 08, 2014, City Council Regular Meeting with a quorum present at 6:30 P.M., all members were present with the exception of Mayor Stephen DonCarlos who was absent. Pledge of Allegiance, Texas Pledge, and Invocation was led by Council Member Capetillo. 1. MINUTES a. Consider approving the minutes of the City Council Regular Meeting held on April 10, 2014. A motion was made by Council Member Robert C. Hoskins and seconded by Council Member Brandon Capetillo approving the April 10, 2014, City Council Regular Meeting minutes. The vote was as follows: Ayes: Council Member Brandon Capetillo, Council Member Robert C. Hoskins, Mayor Pro Tem David McCartney, Council Member Mercedes Renteria III, Council Member Terry Sain, Council Member Chris Presley Nays: None City Council Regular Meeting Minutes May 08, 2014 Page 2 of 20 Other: Mayor Stephen DonCarlos (Absent) Approved 2.
    [Show full text]
  • Texas City Levee
    This presentation is intended to provide some basic information about 3 subjects: First, Why might a flood protection system be needed for the urbanized, eastern part of Galveston Island? Second, What might a flood protection system be? Third, Why not just tag along with other big projects and just let someone from somewhere else tell Galveston Island what Galveston needs to do and what they are going to allow Galveston to do? The Galveston “Ring Levee” A Critical Investment in Galveston’s Future Goals of the Galveston Ring Levee •Provide bay-side flood protection for the City of Galveston. •Essential to protect Galveston from flooding, even if Ike Dike is built. •Enhance Galveston’s relationship to Galveston Bay. •Encourage investment in Galveston by decreasing the risk of flooding Major storms impact Galveston on a regular basis This is the aftermath of the 1900 Storm 12 10 8 Column 1 6 Column 2 Column 3 4 2 0 Row 1 Row 2 Row 3 Row 4 The response of the citizens of Galveston to protect the city from battering storm waves was the first of multiple phases of the Seawall. This was Hurricane Ike. 12 10 8 Column 1 6 Column 2 Column 3 4 2 0 Row 1 Row 2 Row 3 Row 4 Flood waters occur on a regular basis from the north side, bay side of the island. This picture is from Hurricane Carla in 1961 which went inland on Matagorda Island by Port O'Connor, some hundred miles away. Hurricane Ike Flood waters in 2008. Computer simulation in 2005 about different flood levels by Johnson Space Center Office of Emergency Management Hurricane Carly is a made up name Just slightly less than Hurricane Ike flood level of approximately 13.5 feet on the east end of the island.
    [Show full text]
  • Stormwater Management Program 2013-2018 Appendix A
    Appendix A 2012 Texas Integrated Report - Texas 303(d) List (Category 5) 2012 Texas Integrated Report - Texas 303(d) List (Category 5) As required under Sections 303(d) and 304(a) of the federal Clean Water Act, this list identifies the water bodies in or bordering Texas for which effluent limitations are not stringent enough to implement water quality standards, and for which the associated pollutants are suitable for measurement by maximum daily load. In addition, the TCEQ also develops a schedule identifying Total Maximum Daily Loads (TMDLs) that will be initiated in the next two years for priority impaired waters. Issuance of permits to discharge into 303(d)-listed water bodies is described in the TCEQ regulatory guidance document Procedures to Implement the Texas Surface Water Quality Standards (January 2003, RG-194). Impairments are limited to the geographic area described by the Assessment Unit and identified with a six or seven-digit AU_ID. A TMDL for each impaired parameter will be developed to allocate pollutant loads from contributing sources that affect the parameter of concern in each Assessment Unit. The TMDL will be identified and counted using a six or seven-digit AU_ID. Water Quality permits that are issued before a TMDL is approved will not increase pollutant loading that would contribute to the impairment identified for the Assessment Unit. Explanation of Column Headings SegID and Name: The unique identifier (SegID), segment name, and location of the water body. The SegID may be one of two types of numbers. The first type is a classified segment number (4 digits, e.g., 0218), as defined in Appendix A of the Texas Surface Water Quality Standards (TSWQS).
    [Show full text]
  • Houston-Galveston, Texas Managing Coastal Subsidence
    HOUSTON-GALVESTON, TEXAS Managing coastal subsidence TEXAS he greater Houston area, possibly more than any other Lake Livingston A N D S metropolitan area in the United States, has been adversely U P L L affected by land subsidence. Extensive subsidence, caused T A S T A mainly by ground-water pumping but also by oil and gas extraction, O C T r has increased the frequency of flooding, caused extensive damage to Subsidence study area i n i t y industrial and transportation infrastructure, motivated major in- R i v vestments in levees, reservoirs, and surface-water distribution facili- e S r D N ties, and caused substantial loss of wetland habitat. Lake Houston A L W O Although regional land subsidence is often subtle and difficult to L detect, there are localities in and near Houston where the effects are Houston quite evident. In this low-lying coastal environment, as much as 10 L Galveston feet of subsidence has shifted the position of the coastline and A Bay T changed the distribution of wetlands and aquatic vegetation. In fact, S A Texas City the San Jacinto Battleground State Historical Park, site of the battle O Galveston that won Texas independence, is now partly submerged. This park, C Gulf of Mexico about 20 miles east of downtown Houston on the shores of Galveston Bay, commemorates the April 21, 1836, victory of Texans 0 20 Miles led by Sam Houston over Mexican forces led by Santa Ana. About 0 20 Kilometers 100 acres of the park are now under water due to subsidence, and A road (below right) that provided access to the San Jacinto Monument was closed due to flood- ing caused by subsidence.
    [Show full text]
  • Centex Chapter Dallas Chapter Fort Worth Chapter Galveston Bay Area
    APA APPROVED CHAPTER TEXAS Last Updated: 08/11/2021 APPROVED CHAPTER DATE OF MEETING PROGRAM/ COURSE/ TOPIC COURSE CODE RCHs STATEWIDE EVENTS 9/15/21-9/18/21 2021 Texas Payroll Conference 21 TX00 2101 2021 Texas Payroll Conference Thursday 9/16/2021 7 TX00 2102 One Day 2021 Texas Payroll Conference Friday One 9/17/2021 6 TX00 2103 Day CenTex Chapter 2021 Review of the Fudamental Rules of 2/11/21 1 TX01 2101 COBRA 4/8/21 Sexual Harassment in the Workplace 1 TX01 2102 Dallas Chapter 49.0 01/23 - 03/13/2021 Certification Series TX02 2101 (7 RCH per week) 3/20/21 Spring 2021 Calculations 8 TX02 2102 2/11/21 Overpayments 1 TX02 2103 3/11/21 Audit Preparation and G/L Reconciliation 1 TX02 2104 4/8/21 Latest Updates for the IRS 1 TX02 2105 Retirement Plans and How They Affect 7/15/21 2 TX02 2106 Payroll 5/8/21-6/12/21 Summer 2021 Back to Payroll Basics 20 TX02 2107 Managing a New Team- Enhancing Your 5/13/21 1 TX02 2108 Team's Performance 49 (7 07/17/21-08/28/21 Fall 2021 Certification Series RCH per TX02 2109 week) Texas Workforce Commission-Tax 6/10/21 Department-Unmasking the Mystery of 1 TX02 2110 Misclassification The Evolution of Wage Payments- 7/8/21 Leveraging Fintech to Balance Benefits and 1 TX02 2111 Payroll Efficiency Social Security Response: What You Need 8/12/21 1 TX02 2112 To Know About Social Security The Magic of Payroll - Our Magical Payroll 9/9/21 1.5 TX02 2113 Journey “Past, Present, and Future” 9/11/21 Fall 2021 Calculations 8 TX02 2114 Fort Worth Chapter 2/12/21 HR Trends for 2021 and Beyond 1 TX03 2101 4/14/21 Multi-state
    [Show full text]
  • El Lago Long Range Planning Commission
    Public Opinion Concerning Medium- and High-rise Development in the City of El Lago Report on a Community Survey Conducted for Long Range Planning Commission City of El Lago, Texas John Tully, Chair Conducted by Strategic Forecasting and Development, LLC Dr. Peter Bishop, President August 2005 Background The City of El Lago is one of the municipalities in the Clear Lake area to the Southeast of Houston. It contains about 3,000 residents and a small commercial sector along NASA Road One, the main artery through the southern part of the City. El Lago is bounded on the east by Seabrook and on the west by Pasadena and Taylor Lake Village. El Lago contains some multi-family complexes (condominiums, townhouses and apartments) in the strip between NASA Road One and Clear Lake. According to existing zoning requirements, however, none of the complexes is more than four stories. Recently developers have approached the City for zoning variances or changes to the zoning ordinance that would permit taller structures—so-called medium- to high-rise developments. None of these projects has been approved, but the City expects the requests to continue. As a result, the City Council has established a Long Range Planning Commission to make recommendations on the future direction of the City. In addition to consulting with urban planners and architects, Mr. John Tully, a Member of the City Council and the Chair of the Planning Commission, approached Dr. Peter Bishop, President of Strategic Forecasting and Development (SFD) and Chair of the graduate program in Studies of the Future at the University of Houston-Clear Lake, to assist in involving citizens in the planning process.
    [Show full text]