South Central Arc User Group

Established 1990


Integrated Stormwater Management Model for the City of Sugarland, TX

Abigail L Bush, GISP, CFM

Halff Associates

The City of Sugarland’s Integrated Stormwater Management Model (ISWMM) is a comprehensive geo-database of the City’s entire drainage infrastructure and evaluation of its current operation.  The geo-database was developed in ArcGIS, consisting of all applicable information for the City’s drainage facilities and internal watersheds.  In addition, the database will include a system wide analysis of all channels, detention ponds, and storm sewer systems on a consistent datum and set of standards.  The results of these analyses will be georeferenced in the database in the form of flood mapping and organized links to the applicable hydrologic and hydraulic models. 

The initial phase consisted of data collection, geo-referencing the data into GIS on a common vertical and horizontal datum, and development of the City’s geodatabase.  The second phase consists of performing detailed analysis for the hydrology and hydraulics of the channels and their watersheds, including analysis of storm sewer systems in areas of interest and known flooding problems. This analysis will provide the City with a system wide analysis indicating how key components operate under various flooding event scenarios.


This presentation will discuss the project goals, challenges, and potential uses for this geodatabase. 


Stormwater GIS: Multi-Phased Integration from Scratch

Andrew Clem

CDM Smith


As public and private entities continually come under financial scrutiny, the need for asset management programs and effective capital improvement planning procedures are ever-increasing. Particularly in terms of stormwater, having an inventory of the infrastructure in place is a vital component to making assessment and planning decisions. Due to strict allocations and varying project scales, it is understood that projects might have to take on a phased approach. Whether building a stormwater GIS from scratch, or updating an existing network, a multi-phased integration approach can be used to create a robust stormwater GIS system.

The City of Dallasis modernizing Love Field Airport (DAL) though the Love Field Modernization Program. As a component of this program, a stormwater master plan is being created, part of which includes building and updating the stormwater GIS network at DAL. Built into this effort is building the GIS from scratch in some areas and also includes digitizing as-builts, above ground survey, and CCTV inspections. All of these efforts get integrated into the City-wide GIS. By taking a phased approach to integration, Data-Driven Pages, SDE, and geodatabases were used to provide a steady stream of updates.

Whether a project is simple or complex, this presentation will show of how a multi-phased approach can be taken to integrate stormwater infrastructure into an existing GIS system or by starting from scratch. An overview of lessons learned and an outlook on potential complications will also be discussed.


Keywords:  GIS, integration, stormwater, survey, CCTV, asset management


Geospatial Market Trends

Ashok Wadwani

Applied Field Data Systems Inc

Since past few years, there has been various mergers and acquisitions in the GEOSPATIAL market place. This trend is continuing and will continue.   Another major trend in our industry is cost cutting /cost sharing policies. Both of these trends directly impact the new product innovations and customer service. Unless the user community puts the pressure, we will all be hit with higher prices, lower service levels, less competition and less product innovations.  The presentation will cover the trends in detail and provide suggestions for changing these trends.

Making Data Useful

Donna Coggeshall

North Central Texas Council of Governments 

Data analysis is a critical function of successful organizations.  Data must be collected, assessed, stored, and managed.  To provide value, it must be converted to useful information through combinations with other data and analytical processes to create meaning and worth.


Most data can be geographically referenced.  The locational component of the data can, just by itself, add value.  Virtually all data collected by governmental entities has a geographic reference.  As a result, geographic information system (GIS) technology is important for analyzing and displaying data to add to its worth for businesses and governmental entities.


The North Central Texas Council of Governments’ Research and Information Services Department has experience transforming data into useful information and using GIS technology to make that data available in informative and convenient formats. The latest offering is the Research and Information Services Network (RISN), a framework designed to meet a wide range of data needs.


Through RISN, data users have a variety of data access options including the dynamic RISN Viewer, which maximizes data exploration through interactive tools and reporting. Built on our established, award-winning, web mapping program, iCommunities, the RISN viewer provides data to customers in a format that is easily understood, accessible, informational, operationally useful and adds value through savings and cost avoidance, thereby making data useful.

The National Map:  Data Delivery Services
Claire DeVaughan
U.S. Geological Survey

The National Map comprises a variety of products and services that provide the Nation with access to base geospatial information to describe the landscape of the United States.   The National Map supports data download, digital and print versions of topographic maps, geospatial data services, and online viewing.  This presentation will provide an overview of how The National Map web services and data download capabilities can be easily accessed and used to support a variety of project needs.  Emphasis will be on use of The National Map viewer, learning how to download and access The National Map data, and understanding the variety of new web map services that are available.

Development of an Agency-wide GPS Technology Management Plan
Jeff Barnett
Inner Corridor Technologies, Inc.

Over the past two decades, GPS technology has been increasingly used by many organizations without any uniform standards or management plan.  It is commonly unknown within a company who is using GPS, what kinds of units are being used, and for what purposes.  Therefore, the current state of GPS adoption needs to be assessed and compared with current best practices as defined by internal users, other large agencies, and the overall GPS industry. 

In 2011, a study was conducted to create a management plan to guide the Louisiana Department of Transportation and Development (LADOTD)’s use of GPS technology into the future based on those best practices. Survey methodologies and results from this study are applicable to GIS/GPS professionals in the petroleum industry because the challenges of GPS adoption like equipment standards, field use, operator training, device management, data management, documentation, and technology support are being faced here as well.  This presentation will discuss that study focusing on the issues faced, methodologies, and recommendations of the resulting GPS technology management plan.

Mastering Expressions in ArcGIS
Jenny Harrison
Inner Corridor Technologies, Inc

There are different types of expressions used throughout ArcMap, including display expressions, query expressions, and calculator expressions. The display expression is used to differentiate between one feature and the next (formerly known as the Primary Display Field). Query expressions are used whenever a filter is applied based on the attributes of the features. Calculator expressions are used in the Field Calculator to modify tables. Each of these types of expressions can be used in a simple way with single fields or operations, or in a complex way using functions and variables. Learn where these expressions can be used, how to write basic expressions, and how to build complex expressions that harness the true power of these tools. This workshop will help you master expressions, no matter which version of ArcGIS you are using.

So You Think You Know How Topology Works?
Kurt Menking & Agustine Solis
Bexar Appraisal District

Many of those who maintain parcel data sets have been using the ESRI parcel topology tools since the early 1990’s.  But I’ll bet there are some things you’d be surprised to know.   We will demonstrate and discuss some of the tricks for success and even disclose some of the lesser known flaws or problems with editing in topology datasets.

How Not to Migrate from Topology to Fabric
Kurt Menking & Agustine Solis
Bexar Appraisal District

BCAD recently migrated from parcel topology to the new parcel fabric database.  We will give lots of hints, ideas, and recommendations for those considering the migration.  We made plenty of mistakes, which we’ll outline, and discuss how we should have done things differently.  We’ll also spend some time describing what the fabric is, how it works, and a user perspective of benefits, and drawbacks.

Using GIS and GPS to Map Caves
Kurt Menking
Bexar Appraisal District

Kurt will first describe techniques used in cave surveying and mapping.  Then he will discuss how GIS and GPS can play useful roles in the process.  There will be photos of surveying techniques, and map demos as well as some use of 3D views to show caves relationships with the 3D surface terrain.

SCAUG:  Membership Has Its Privileges
Charles E. Brady III, GISP, City of Ardmore, &  President of SCAUG
Shellie Willoughby, GISP, Oklahoma Office of Geographic Information / Oklahoma Conservation Commission & Vice President of SCAUG

The South Central Arc Users Group (SCAUG) is an organization made up of GIS users from across a four state region including Oklahoma, Mississippi, Louisiana, and Texas with professional contacts & resources reaching much farther.  The region also corresponds to the San Antonio Esri Regional Office. SCAUG’s unique position and subsequent growth with Esri has & continues to provide the users of Esri software a broad development base with direct access to Esri resources that exist nowhere else. What exactly does that mean? What does being a member of SCAUG do for me? How do I become more involved?  Are there local SCAUG groups that I can become a part of? The presentation will focus on the benefits of being a member of SCAUG, how to become involved in the organization and upcoming activities throughout the four state region.

U.S. Geological Survey Historical Topographic Map Collection:  Preserving the Past          Darryl S. Williams                                                                                                                                                                           USGS Geospatial Liaison for Oklahoma

For more than 125 years, the U.S. Geological Survey (USGS) topographic maps have accurately portrayed the complex geography of our Nation. The Historical Topographic Map Collection scanning will provide a comprehensive digital repository of USGS topographic maps, available to the public at no costs.  As physical and cultural features change over time, maps are updated, revised and new editions printed. A series of maps covering the same geographic area published over a period of time can show how an area looked before development and provide a detailed view of changes over time.

The goal of the Historical Topographic Map Collection is to scan all scales and all editions of the more than 200,000 topographic maps published by the USGS since the inception of the topographic mapping program in 1884.These maps are either no longer available for distribution in print or are being replaced by the new generation of US Topo maps.  The National Geospatial Program (NGP) is accurately cataloging and creating metadata to accompany the high-resolution, georeferenced digital filesrepresenting the legacy lithographic maps. Historical Topographic maps are available free on the web through the USGS Store and The National Map Viewer.

Development of the Willacy County Mapbook a Manual Approach
Orlando Nino
Lower Rio Grande Valley Development Council 9-1-1 Department

The Lower Rio Grande Valley Development Council, 9-1-1 Department, is the official addressing authority for Hidalgo and Willacy Counties.   Both counties have approximately 800,000 residents.  A major duty of the 9-1-1 Departmentis to provide legal 9-1-1 addresses to all structures including towers, lift satiations and other utilities.  As the 9-1-1- agency for both counties it is vital to provide first responders tools to minimize respond times where help is needed.  Willacy County is sparsely populated with many rural homes and a mapbook is invaluable for this type of scenario. With the addition of data driven pages in ArcDesktop 10 the creation of mapbookshas been simplified. This presentation will focus on the development of the Willacy County mapbook by a non-scripting method fromthe planning process all the way to the dissemination of the mapbook the end users.

Aligning Geospatial Industry Workforce Needs with Academic Programs
Dr. Phillip Davis                                                                                                                                                                             
National Geospatial Technology Center of Excellence

The Department of Labor’s Geospatial Technology Competency Model (GTCM) is the de-facto standard for the industry.  The GTCM outlines the requisite knowledge, skills, and abilities (KSA) required by workers in the industry, from technician level to manager and scientist.  The GTCM covers all three sectors of our industry, and is critically important to hiring managers, supervisors, human resource managers, and line supervisors since they must select, hire, and manage geospatial workers.  This presentation will provide how the GeoTech Center assisted in developing the GTCM, our work to improve upon its depth of detail and our GTCM Model Course Curriculum that can be used by industry and educators to develop training and education programs that align their graduates with the latest industry needs.  Participants will receive free access to our GTCM model course server where they can download the curriculum for their own use or adaptation.  We will examine our GTCM self-assessment tool and quiz that may become the basis for the new GISP skills exam proposed for 2015. See how you can join our GeoTech Center mentoring program and earn valuable education points towards your own GISP certification or community service requirement.

So You Think You Can’t Afford a GIS?
L. David Flores, Jr., CPM
City of Pharr

Don’t think you can afford a GIS?  Let me show you that you can.  The City of Pharr, TX has done a remarkable job in deploying their GIS throughout their organization with a lean budget all without huge consulting costs.  During these challenging times the need to do more with the same or less capital outlay, organizations still have to maintain, track and plan ahead.  Let me show you where we were, are now and where we are going using our GIS into the future with a GIS of One.  We will look at how Pharr is using their GIS to service Economic Development, Utilities, Public Works, Engineering, Planning, E-911/Addressing and legal issues.

During the presentation will look into the collaboration efforts of our GIS Community, the Rio Grande Valley Arc Users Group (RGVAUG) and how our GIS Community helps in cost savings.  We will also look at upcoming ESRI services and how they will play a role in our future. 

How to Display Data, Data, and More Data                                                                                                            Santa Rivas, Planner
San Antonio Water System – Infrastructure Planning Department - Master Planning Group

Creating exhibits and displaying several layers of data can be very challenging and even those with experience can be overwhelmed with the amount of data to be displayed in one single exhibit.  The key goal is to convert and transform the data into useful information in the form of an exhibit, which the end user can use to conduct a valid analysis and to make better decisions. 

A good exhibit is detrimental to the daily function of the Wastewater Master Planning team (WWMP) since it is referenced on a daily basis by the group.  Millions of dollars in proposed wastewater capital improvement projects (CIPs) are geographically depicted in the Wastewater Infrastructure Plan (WWIP) exhibit, as well as other related data.  The WWIP exhibit makes coordination efforts between departments and other agencies a lot easier.

The beauty of using GIS is that once the mxd has been created and the data has been properly stored in a designated Geodatabase, it can be easily revised (edited), making it easier to manage while making revisions and updates as changes occur.  That is why Geographic information system (GIS) software is useful in accomplishing this challenging task.

| SCAUG is a not for profit organization dedicated to benefit users of ESRI’s geographic information software | Founded in 1990 | © SCAUG 2009 |
| South Central Arc Users Group | P.O. Box 96 | Ardmore, OK 73402  | Fax- 214-291-5659 | Email Webmaster | SCAUG Email |

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