February 2022 TAGD Business Meeting
Study Results: Delineating Injection Well Buffer Zones in Brackish Aquifers
Juan Acevedo, BRACS Hydrologist, TWDB Jack Sharp, Professor Emeritus in Geology, UT- Austin
DSD-INT 2017 Groundwater in Global Hydrology - BierkensDeltares
Presentation by Marc Bierkens (Utrecht University) at the iMOD International User Day, during Delft Software Days - Edition 2017. Tuesday, 31 October 2017, Delft.
DSD-INT 2020 Lake Turnover Assessments using Delft3D and SOBEK - van MegchelenDeltares
Presentation by Cara van Megchelen & Rob Swan, Cardno, at the Delft3D User Days - Australian Time zone: Inland to Estuary, during Delft Software Days - Edition 2020. Tuesday, 10 November 2020.
DSD-INT 2019 ShorelineS and future coastline modelling - RoelvinkDeltares
Presentation by Dano Roelvink, IHE Delft Institute for Water Education, The Netherlands, at the Delft3D and XBeach User Day: Coastal morphodynamics, during Delft Software Days - Edition 2019. Wednesday, 13 November 2019, Delft.
February 2022 TAGD Business Meeting
Study Results: Delineating Injection Well Buffer Zones in Brackish Aquifers
Juan Acevedo, BRACS Hydrologist, TWDB Jack Sharp, Professor Emeritus in Geology, UT- Austin
DSD-INT 2017 Groundwater in Global Hydrology - BierkensDeltares
Presentation by Marc Bierkens (Utrecht University) at the iMOD International User Day, during Delft Software Days - Edition 2017. Tuesday, 31 October 2017, Delft.
DSD-INT 2020 Lake Turnover Assessments using Delft3D and SOBEK - van MegchelenDeltares
Presentation by Cara van Megchelen & Rob Swan, Cardno, at the Delft3D User Days - Australian Time zone: Inland to Estuary, during Delft Software Days - Edition 2020. Tuesday, 10 November 2020.
DSD-INT 2019 ShorelineS and future coastline modelling - RoelvinkDeltares
Presentation by Dano Roelvink, IHE Delft Institute for Water Education, The Netherlands, at the Delft3D and XBeach User Day: Coastal morphodynamics, during Delft Software Days - Edition 2019. Wednesday, 13 November 2019, Delft.
Mike Keester, LRE Water
Rohit Goswami, WSP
Bridget Scanlon, UT Bureau of Economic Geology
Van Kelley, INTERA
January 2021 TAGD Virtual Business Meeting
February 2022 TAGD Business Meeting
Texas Water Development Board Updates
Natalie Ballew, Groundwater Technical Assistance Manager Heather Dodson, Groundwater Data Team Lead
Classification either on quality or type based for groundwater can offer great advantages especially in regional groundwater management. It provides a short, quick processing, interpretation for a lot of complete hydro-chemical data sets and concise presentation of the results. There is a demonstrable need for a quality assurance, with the advanced usage of world's largest fresh water storage i.e Ground water. Its getting depleted over the years and the quality of the same degrading with a rapid pace. Ground water Quality is assessed mainly by the chemical analysis of samples. The data obtained from the chemical analysis is key for the further classification, analysis, correlation etc. Graphical and Numerical interpretation of the data is the main source for Hydro-chemical studies. In this paper we test the performance of the many available graphical and statistical methodologies used to classify water samples including: Collins bar diagram, Stiff pattern diagram, Schoeller plot, Piper diagram, Durov's Double Triangular Diagram, Gibbs's Diagram, Stuyfzand Classification. This paper explains various models which classify, correlate etc., summarizing the water quality data. The basic graphs and diagrams in each category are explained by sample diagrams. In addition to the diagrams an overall characterization of hydro-chemical facies of the water can be carried out by using plots which represents a water type and hardness domain. The combination of graphical and statistical techniques provides a consistent and objective means to classify large numbers of samples while retaining the ease of classic graphical presentation.
DSD-INT 2020 Real Time Hydrologic, Hydraulic and Water Quality Forecasting in...Deltares
Presentation by Tony McAlister, WaterTech, at the Delft3D User Days - Australian Time zone: Inland to Estuary, during Delft Software Days - Edition 2020. Tuesday, 10 November 2020.
DSD-INT 2018 Floodplain Circulation Dynamics - van der SteegDeltares
Presentation by Shailesh van der Steeg, University of South Carolina, USA, at the Delft3D - User Days (Day 1: Hydrology and hydrodynamics), during Delft Software Days - Edition 2018. Monday, 12 November 2018, Delft.
This presentation by Mason Johnson, a master's student at the University of Nebraska-Lincoln, was presented at the Daugherty Water for Food Global Institute’s Research Forum on Thursday, May 11, 2017. Mason is a 2016-2017 student support grantee of the Institute.
Preliminary Technical Evaluation of Three Reports by U.S. Environmental Prote...LPE Learning Center
http://www.extension.org/72802 The Yakima Valley is a large agricultural area where there are multiple potential sources of nitrate in groundwater. Potential sources are intermingled, i.e., homes with septic systems are on the same properties as the dairies or adjacent to farms and/or dairies. In 2012, Region 10 of the US Environmental Protection Agency undertook a study to source track and identify nitrogen sources in the Yakima River Basin as part of an enforcement effort focusing on dairies. EPA position was that the targeted dairies did not properly apply nutrients to land application fields at agronomic rates, resulting in groundwater contamination. The study area is underlain by 3 aquifers, a shallow perched aquifer likely related to irrigation return flows, an alluvial aquifer and an underlying basalt aquifer. The three aquifers are hydrologically connected either through natural pathways or through wells completed into more than one aquifer. Because none of the potential sources are isolated, source tracking requires an in-depth knowledge of aquifer properties such as aquifer thickness, groundwater flow direction, hydraulic conductivity, and vertical leakance in addition to understanding localized effects of ditches, drains and production wells on groundwater flow. EPA focused on groundwater chemistry, assuming that indicators such as pesticides and other trace organic compounds would tie the groundwater nitrate to a specific source. EPA’s study failed to yield clear indicators pointing to specific sources and did not collect hydrologic data for its 2012 report to gain a detailed understanding of aquifer properties. This presentation will address how to accurately characterize the hydrogeology below dairy production areas and land application fields, and how to proactively manage nutrients to protect dairies from unsubstantiated enforcement actions.
Mike Keester, LRE Water
Rohit Goswami, WSP
Bridget Scanlon, UT Bureau of Economic Geology
Van Kelley, INTERA
January 2021 TAGD Virtual Business Meeting
February 2022 TAGD Business Meeting
Texas Water Development Board Updates
Natalie Ballew, Groundwater Technical Assistance Manager Heather Dodson, Groundwater Data Team Lead
Classification either on quality or type based for groundwater can offer great advantages especially in regional groundwater management. It provides a short, quick processing, interpretation for a lot of complete hydro-chemical data sets and concise presentation of the results. There is a demonstrable need for a quality assurance, with the advanced usage of world's largest fresh water storage i.e Ground water. Its getting depleted over the years and the quality of the same degrading with a rapid pace. Ground water Quality is assessed mainly by the chemical analysis of samples. The data obtained from the chemical analysis is key for the further classification, analysis, correlation etc. Graphical and Numerical interpretation of the data is the main source for Hydro-chemical studies. In this paper we test the performance of the many available graphical and statistical methodologies used to classify water samples including: Collins bar diagram, Stiff pattern diagram, Schoeller plot, Piper diagram, Durov's Double Triangular Diagram, Gibbs's Diagram, Stuyfzand Classification. This paper explains various models which classify, correlate etc., summarizing the water quality data. The basic graphs and diagrams in each category are explained by sample diagrams. In addition to the diagrams an overall characterization of hydro-chemical facies of the water can be carried out by using plots which represents a water type and hardness domain. The combination of graphical and statistical techniques provides a consistent and objective means to classify large numbers of samples while retaining the ease of classic graphical presentation.
DSD-INT 2020 Real Time Hydrologic, Hydraulic and Water Quality Forecasting in...Deltares
Presentation by Tony McAlister, WaterTech, at the Delft3D User Days - Australian Time zone: Inland to Estuary, during Delft Software Days - Edition 2020. Tuesday, 10 November 2020.
DSD-INT 2018 Floodplain Circulation Dynamics - van der SteegDeltares
Presentation by Shailesh van der Steeg, University of South Carolina, USA, at the Delft3D - User Days (Day 1: Hydrology and hydrodynamics), during Delft Software Days - Edition 2018. Monday, 12 November 2018, Delft.
This presentation by Mason Johnson, a master's student at the University of Nebraska-Lincoln, was presented at the Daugherty Water for Food Global Institute’s Research Forum on Thursday, May 11, 2017. Mason is a 2016-2017 student support grantee of the Institute.
Preliminary Technical Evaluation of Three Reports by U.S. Environmental Prote...LPE Learning Center
http://www.extension.org/72802 The Yakima Valley is a large agricultural area where there are multiple potential sources of nitrate in groundwater. Potential sources are intermingled, i.e., homes with septic systems are on the same properties as the dairies or adjacent to farms and/or dairies. In 2012, Region 10 of the US Environmental Protection Agency undertook a study to source track and identify nitrogen sources in the Yakima River Basin as part of an enforcement effort focusing on dairies. EPA position was that the targeted dairies did not properly apply nutrients to land application fields at agronomic rates, resulting in groundwater contamination. The study area is underlain by 3 aquifers, a shallow perched aquifer likely related to irrigation return flows, an alluvial aquifer and an underlying basalt aquifer. The three aquifers are hydrologically connected either through natural pathways or through wells completed into more than one aquifer. Because none of the potential sources are isolated, source tracking requires an in-depth knowledge of aquifer properties such as aquifer thickness, groundwater flow direction, hydraulic conductivity, and vertical leakance in addition to understanding localized effects of ditches, drains and production wells on groundwater flow. EPA focused on groundwater chemistry, assuming that indicators such as pesticides and other trace organic compounds would tie the groundwater nitrate to a specific source. EPA’s study failed to yield clear indicators pointing to specific sources and did not collect hydrologic data for its 2012 report to gain a detailed understanding of aquifer properties. This presentation will address how to accurately characterize the hydrogeology below dairy production areas and land application fields, and how to proactively manage nutrients to protect dairies from unsubstantiated enforcement actions.
Presentation on Mag Green Structured Water Technology in Agricultural Develop...Hooria Shamail Rashid
Applications of Mag Green Structured Water Technology
in Agricultural Development at lowest possible cost.
A Solution to Profitable Agriculture Practices & Reclamation of Saline Land For Food Security
Magnetic water treatment for better growthHabibur Rahman
Magnetic water is water that has been passed through a magnetic field. Magnetic water treatment devices are environmentally friendly, with low installation costs and no energy requirements. Magnetic water is used to increase crop yield, induce seed germination and benefit the health of livestock.It is proven to reduce water consumption by up to 20%, Reduce Fertilizer Usage 30-50%, while boosting crop yields by at least 30%.
New Technologies for Water Purification, Ion Exchange(India) LimitedIndia Water Portal
Presentation at the Seminar on Packaged Water Industry in India which was organised by Confederation of Indian Industry (CII) on 30th June 2009.
To know more click on the link http://indiawaterportal.org/post/6790
We thank CII and the presenters for giving us permission to make these presentations available online.
Presentation given during the USGS/IAEA/IW:LEARN groundwater learning exchange in the US April 14-26, 2007.
IAEA/GEF IW Learn/USGS Exchange April 16, 2007 Reston, VA
Kevin Dennehy
GROUND-WATER RESOURCES PROGRAM http://water.usgs.gov/ogw/gwrp/
Presentation given during the USGS/IAEA/IW:LEARN groundwater learning exchange in the US April 14-26, 2007.
IAEA/GEF IW Learn/USGS Exchange April 16, 2007 Reston, VA
Kevin Dennehy
GROUND-WATER RESOURCES PROGRAM http://water.usgs.gov/ogw/gwrp/
The hydroelectric potential of Haiti consists of 164 sites ranging from 50 KW to over 10,000 KW for a cumulative total of 225,478 KW. From the spatially spotted sites, 79 were deemed to be the most feasible based solely on a 20% or above for the ratio of the minimum power over the maximum power. The cumulative capacity of these 79 sites is approximately 168,969 KW.
Overview of National Water Information System (NWIS) (Trapanese)Iwl Pcu
Presentation given during the USGS/IAEA/IW:LEARN groundwater learning exchange in the US April 14-26, 2007.
Susan Trapanese
Chief of National Water Information System
April 17, 2007
Overview of National Water Information System (NWIS) (Trapanese)Iwl Pcu
Presentation given during the USGS/IAEA/IW:LEARN groundwater learning exchange in the US April 14-26, 2007.
Susan Trapanese
Chief of National Water Information System
April 17, 2007
The California Central Valley Groundwater-Surface Water Simulation Model (C2VSim) simulates the monthly response of the Central Valley’s groundwater and surface water flow system to historical stresses, and can also be used to simulate the response to projected future stresses. C2VSim contains monthly historical stream inflows, surface water diversions, precipitation, land use and crop acreages from October 1921 through September 2009. The model dynamically calculates crop water demands, allocates contributions from precipitation, soil moisture and surface water diversions, and calculates the groundwater pumpage required to meet the remaining demand.
Presentation to Governor's Water Augmentation Council, Desalination Committee - summary of potentially favorable locations in Arizona for brackish groundwater development and technical/permitting approach to deep brine injection
Le nuove frontiere dell'AI nell'RPA con UiPath Autopilot™UiPathCommunity
In questo evento online gratuito, organizzato dalla Community Italiana di UiPath, potrai esplorare le nuove funzionalità di Autopilot, il tool che integra l'Intelligenza Artificiale nei processi di sviluppo e utilizzo delle Automazioni.
📕 Vedremo insieme alcuni esempi dell'utilizzo di Autopilot in diversi tool della Suite UiPath:
Autopilot per Studio Web
Autopilot per Studio
Autopilot per Apps
Clipboard AI
GenAI applicata alla Document Understanding
👨🏫👨💻 Speakers:
Stefano Negro, UiPath MVPx3, RPA Tech Lead @ BSP Consultant
Flavio Martinelli, UiPath MVP 2023, Technical Account Manager @UiPath
Andrei Tasca, RPA Solutions Team Lead @NTT Data
Securing your Kubernetes cluster_ a step-by-step guide to success !KatiaHIMEUR1
Today, after several years of existence, an extremely active community and an ultra-dynamic ecosystem, Kubernetes has established itself as the de facto standard in container orchestration. Thanks to a wide range of managed services, it has never been so easy to set up a ready-to-use Kubernetes cluster.
However, this ease of use means that the subject of security in Kubernetes is often left for later, or even neglected. This exposes companies to significant risks.
In this talk, I'll show you step-by-step how to secure your Kubernetes cluster for greater peace of mind and reliability.
Epistemic Interaction - tuning interfaces to provide information for AI supportAlan Dix
Paper presented at SYNERGY workshop at AVI 2024, Genoa, Italy. 3rd June 2024
https://alandix.com/academic/papers/synergy2024-epistemic/
As machine learning integrates deeper into human-computer interactions, the concept of epistemic interaction emerges, aiming to refine these interactions to enhance system adaptability. This approach encourages minor, intentional adjustments in user behaviour to enrich the data available for system learning. This paper introduces epistemic interaction within the context of human-system communication, illustrating how deliberate interaction design can improve system understanding and adaptation. Through concrete examples, we demonstrate the potential of epistemic interaction to significantly advance human-computer interaction by leveraging intuitive human communication strategies to inform system design and functionality, offering a novel pathway for enriching user-system engagements.
Welcome to the first live UiPath Community Day Dubai! Join us for this unique occasion to meet our local and global UiPath Community and leaders. You will get a full view of the MEA region's automation landscape and the AI Powered automation technology capabilities of UiPath. Also, hosted by our local partners Marc Ellis, you will enjoy a half-day packed with industry insights and automation peers networking.
📕 Curious on our agenda? Wait no more!
10:00 Welcome note - UiPath Community in Dubai
Lovely Sinha, UiPath Community Chapter Leader, UiPath MVPx3, Hyper-automation Consultant, First Abu Dhabi Bank
10:20 A UiPath cross-region MEA overview
Ashraf El Zarka, VP and Managing Director MEA, UiPath
10:35: Customer Success Journey
Deepthi Deepak, Head of Intelligent Automation CoE, First Abu Dhabi Bank
11:15 The UiPath approach to GenAI with our three principles: improve accuracy, supercharge productivity, and automate more
Boris Krumrey, Global VP, Automation Innovation, UiPath
12:15 To discover how Marc Ellis leverages tech-driven solutions in recruitment and managed services.
Brendan Lingam, Director of Sales and Business Development, Marc Ellis
Generative AI Deep Dive: Advancing from Proof of Concept to ProductionAggregage
Join Maher Hanafi, VP of Engineering at Betterworks, in this new session where he'll share a practical framework to transform Gen AI prototypes into impactful products! He'll delve into the complexities of data collection and management, model selection and optimization, and ensuring security, scalability, and responsible use.
In his public lecture, Christian Timmerer provides insights into the fascinating history of video streaming, starting from its humble beginnings before YouTube to the groundbreaking technologies that now dominate platforms like Netflix and ORF ON. Timmerer also presents provocative contributions of his own that have significantly influenced the industry. He concludes by looking at future challenges and invites the audience to join in a discussion.
GDG Cloud Southlake #33: Boule & Rebala: Effective AppSec in SDLC using Deplo...James Anderson
Effective Application Security in Software Delivery lifecycle using Deployment Firewall and DBOM
The modern software delivery process (or the CI/CD process) includes many tools, distributed teams, open-source code, and cloud platforms. Constant focus on speed to release software to market, along with the traditional slow and manual security checks has caused gaps in continuous security as an important piece in the software supply chain. Today organizations feel more susceptible to external and internal cyber threats due to the vast attack surface in their applications supply chain and the lack of end-to-end governance and risk management.
The software team must secure its software delivery process to avoid vulnerability and security breaches. This needs to be achieved with existing tool chains and without extensive rework of the delivery processes. This talk will present strategies and techniques for providing visibility into the true risk of the existing vulnerabilities, preventing the introduction of security issues in the software, resolving vulnerabilities in production environments quickly, and capturing the deployment bill of materials (DBOM).
Speakers:
Bob Boule
Robert Boule is a technology enthusiast with PASSION for technology and making things work along with a knack for helping others understand how things work. He comes with around 20 years of solution engineering experience in application security, software continuous delivery, and SaaS platforms. He is known for his dynamic presentations in CI/CD and application security integrated in software delivery lifecycle.
Gopinath Rebala
Gopinath Rebala is the CTO of OpsMx, where he has overall responsibility for the machine learning and data processing architectures for Secure Software Delivery. Gopi also has a strong connection with our customers, leading design and architecture for strategic implementations. Gopi is a frequent speaker and well-known leader in continuous delivery and integrating security into software delivery.
SAP Sapphire 2024 - ASUG301 building better apps with SAP Fiori.pdfPeter Spielvogel
Building better applications for business users with SAP Fiori.
• What is SAP Fiori and why it matters to you
• How a better user experience drives measurable business benefits
• How to get started with SAP Fiori today
• How SAP Fiori elements accelerates application development
• How SAP Build Code includes SAP Fiori tools and other generative artificial intelligence capabilities
• How SAP Fiori paves the way for using AI in SAP apps
Transcript: Selling digital books in 2024: Insights from industry leaders - T...BookNet Canada
The publishing industry has been selling digital audiobooks and ebooks for over a decade and has found its groove. What’s changed? What has stayed the same? Where do we go from here? Join a group of leading sales peers from across the industry for a conversation about the lessons learned since the popularization of digital books, best practices, digital book supply chain management, and more.
Link to video recording: https://bnctechforum.ca/sessions/selling-digital-books-in-2024-insights-from-industry-leaders/
Presented by BookNet Canada on May 28, 2024, with support from the Department of Canadian Heritage.
UiPath Test Automation using UiPath Test Suite series, part 4DianaGray10
Welcome to UiPath Test Automation using UiPath Test Suite series part 4. In this session, we will cover Test Manager overview along with SAP heatmap.
The UiPath Test Manager overview with SAP heatmap webinar offers a concise yet comprehensive exploration of the role of a Test Manager within SAP environments, coupled with the utilization of heatmaps for effective testing strategies.
Participants will gain insights into the responsibilities, challenges, and best practices associated with test management in SAP projects. Additionally, the webinar delves into the significance of heatmaps as a visual aid for identifying testing priorities, areas of risk, and resource allocation within SAP landscapes. Through this session, attendees can expect to enhance their understanding of test management principles while learning practical approaches to optimize testing processes in SAP environments using heatmap visualization techniques
What will you get from this session?
1. Insights into SAP testing best practices
2. Heatmap utilization for testing
3. Optimization of testing processes
4. Demo
Topics covered:
Execution from the test manager
Orchestrator execution result
Defect reporting
SAP heatmap example with demo
Speaker:
Deepak Rai, Automation Practice Lead, Boundaryless Group and UiPath MVP
Alt. GDG Cloud Southlake #33: Boule & Rebala: Effective AppSec in SDLC using ...James Anderson
Effective Application Security in Software Delivery lifecycle using Deployment Firewall and DBOM
The modern software delivery process (or the CI/CD process) includes many tools, distributed teams, open-source code, and cloud platforms. Constant focus on speed to release software to market, along with the traditional slow and manual security checks has caused gaps in continuous security as an important piece in the software supply chain. Today organizations feel more susceptible to external and internal cyber threats due to the vast attack surface in their applications supply chain and the lack of end-to-end governance and risk management.
The software team must secure its software delivery process to avoid vulnerability and security breaches. This needs to be achieved with existing tool chains and without extensive rework of the delivery processes. This talk will present strategies and techniques for providing visibility into the true risk of the existing vulnerabilities, preventing the introduction of security issues in the software, resolving vulnerabilities in production environments quickly, and capturing the deployment bill of materials (DBOM).
Speakers:
Bob Boule
Robert Boule is a technology enthusiast with PASSION for technology and making things work along with a knack for helping others understand how things work. He comes with around 20 years of solution engineering experience in application security, software continuous delivery, and SaaS platforms. He is known for his dynamic presentations in CI/CD and application security integrated in software delivery lifecycle.
Gopinath Rebala
Gopinath Rebala is the CTO of OpsMx, where he has overall responsibility for the machine learning and data processing architectures for Secure Software Delivery. Gopi also has a strong connection with our customers, leading design and architecture for strategic implementations. Gopi is a frequent speaker and well-known leader in continuous delivery and integrating security into software delivery.
2. Why study brackish water?
colored regions
represent estimated
brackish extent of
major-minor aquifers
• 2.7 billion acre-feet brackish groundwater
• Need detailed information
• Growing interest in desalination
3. 10.2%
33.8%
16.7%
24.9%
8.9%
Cumulative Water Management Strategies by 2060
Seawater
Desalination 1.4%
Conservation
Surface Water
Groundwater
Groundwater
Desalination 2%
New Reservoirs
ConjunctiveUse
ASR
Other
Water Reuse
Source: 2012 State Water Plan
8. How does TWDB characterize brackish water?
BRACS: Brackish Resources Aquifer Characterization System
• build datasets (database, GIS) of project information
• collect well logs (water, oil/gas) for interpretation
• compile aquifer properties
• map aquifer extent to 10,000 mg/L TDS
• map key desalination parameters
• calculate volumes of water
• each aquifer may require unique analysis based on data
availability and local hydrogeology
• provide all information to interested stakeholders
9. TWDB Groundwater Database
Well Data
Remarks
Water Levels
Water Chemistry (2 tables)
Casing
TWDB BRACS Database
Well Data (location, depth, owner, …)
Water Levels
Water Chemistry (2 tables)
Casing
Foreign Keys (well ids)
Well Geology (lithologystratigraphy)
Net Sand and Sand Percent
Interpreted TDS from Geophysical Logs
Aquifer Determination Analysis
Digital Water Well Reports
Digital Geophysical Well Logs
Geophysical Well Log Suites
Aquifer Test Information
TWDB Database Tables
New
Tables
10. BRACS Database
MS Access relational design
Contains all the new information we are collecting
Designed to process information (Visual Basic Code)
Link to additional databases through key fields
Available on our website (with data dictionary)
Will be merged with the TWDB Groundwater Database
in MS SQL Server
11. BRACS Database
Foreign Key Table
• Well name(s)
• Number(s)
• State Well Number
• API Number
• Q-number
• Public Water ID
• Report numbers
• Cross-Section IDs
Source: BRACS Database
15. Formation Lithology
Geophysical well log interpretation
Driller formation descriptions from well reports
Used for:
Water volume calculations
Sand thickness and occurrence
Clay thickness
Source: Gulf Coast Aquifer Project, Corpus Christi ASR
16. Formation Stratigraphy
Geophysical well logs
Water well reports
Used for:
Formation top and bottom
Formation extent
Formation sand content
Correct aquifer assignment of
water quality and aquifer properties
Source: Sparta – Queen City Aquifer Project
22. Aquifer Determination
• Assign aquifer(s) to each well in the project area
• Use screen top/bottom or well depth or total depth of hole
• Use the GIS-derived 3-D formation surfaces as vertical control
Why?
• Compare wells completed in same aquifer
• Consistent evaluation of aquifer water quality and properties
• Many new wells do not have TWDB aquifer code
• Some TWDB wells have incorrect aquifer code
23. May include:
• Well yield
• Specific capacity
• Hydraulic
conductivity
• Transmissivity
• Storativity
• Specific yield
• Test length
• Drawdown
• Report Reference
(Myers, R 98)
Orange: BRACS Database
Green: TDLR Submitted Driller Logs
Aquifer and Well Test Data
Source: Carrizo – Wilcox Aquifer Project
24. Water Quality Data
Wells are biased towards fresh water
Source: Carrizo – Wilcox Aquifer Project
25. 100
1000
10000
100000
1000000
0.1 1 10 100
TotalDissolvedSolids(partspermillion)
Geophysical Well Log Resistivity (ohm-meters)
USGS Produced Water Database
TWDB Groundwater Database
Source: Gulf Coast Aquifer Project, Corpus Christi ASR
Geophysical well log resistivity compared with water quality data
28. Queen City Aquifer
Water Quality Zones
Geophysical Well Log Analysis
Water Quality, USGS Produced Water
Water Quality, TWDB Groundwater Database
Source: Sparta – Queen City Aquifer Project
29. Estimated Groundwater Volumes
Total Estimated Recoverable Storage:
• per aquifer
• per county
• per TDS Range
Four TDS Ranges (mg/L):
• Fresh 0-999
• Brackish 1,000 -2,999
3,000 – 9,999
• Very Saline > 10,000
Similar method as TWDB Groundwater Resources Division
31. Request for Information
Non-confidential data:
• Groundwater reports
• Water quality data
• Well testing and aquifer parameters
• Geophysical well logs
• Water well reports
32. BRACS well locations in WIID(*)
(*) WIID: Water Information Integration & Dissemination
33. • Pecos Valley Aquifer, West Texas (completed August 2011)
• Gulf Coast Aquifer, Corpus Christi ASR Conservation
District (completed March 2012)
• Queen City – Sparta Aquifer, Atascosa and McMullen
counties (final review in progress)
• Carrizo – Wilcox Aquifer, Central Texas (in progress)
• Gulf Coast Aquifer, Lower Rio Grande Valley (in progress)
BRACS Projects
35. Desalination Studies and Demonstration Projects
Seawater pilot
Concentrate
Management Information
Source
Characterization
36. Summary
• Detailed brackish groundwater resource evaluation
• Evaluating techniques of geophysical well log interpretation
• BRACS project deliverables available on TWDB website
• Geophysical well log files available upon request
• Contract reports and deliverables available on TWDB website
Most everyone familiar with the TWDB groundwater database.BRACS database was developed to handle new information obtained for the project
Gulf Coast Aquifer, Corpus Christi area. Comparison of Total Dissolved Solids (TDS) content of formation water and deep resistivity from geophysical well logs. 93 samples evaluated. High TDS water (> 15,000 mg/L) from USGS Produced Water Database. TDS < 15,000 from water well samples and one oil well DST sample set in the TWDB Groundwater Database. See map previous slide for well locations and formations where TDS samples were obtained.
John Estepp, P.G., TCEQ Surface Casing Program, prepared a book and training class on interpreting geophysical well logs for TDS.John’s formulas for analysis have been compiled and converted to Visual Basic code. There are currently 5 TDS methods that can be used.Automating the analysis will save staff time and offer better quality data.By saving all information in the database, new information (for example: better correction factors) can be incorporated and re-processed quickly.Staff can select a method and analyze the data. Staff can review the results before deciding if they want to save or discard the analysis.Example from Pecos Valley Aquifer project.
The TWDB WIID will be completely re-designed within the next few years.The display of our BRACS wells on this web page is a start towards providing information to the public.
Significant tasks, beginning in November of 2009.Two staff hired by the TWDB to conduct the BRACS project in November, 2009. Pecos Valley Aquifer pilot study began in February, 2010 with a final completion date of August 31, 2011.The TWDB Board approved three contracts in November, 2010 with a final completion date of August 31, 2011.
Activities: Funding and Outreach Activities Outreach: Partnerships & Workshops desalination technology workshops Bureau of Reclamation, SAWS and EPWU$7 million for desalination projects since 2000Nearly half of that for brackish groundwater desalination