Primary Services


  • Project Management
  • Research
  • Database Management
  • Geospatial Integration


  • Mapping
  • Spatial Analysis
  • Modeling
  • Statistics

Website Design

  • Drupal 7 Training, Design, and Development
  • Drupal 8 Training, Design, and Development
  • Module Development


  • Tools
  • Script Development
  • Application Development
  • Computer
    • Windows
    • Linux
    • Mac
  • Mobile Applications
    • Windows
    • Android
    • Apple
  • Interactive Web-based

Service Descriptions

As consultants, our first priority is understanding your needs. Your priorities will allow us to customize our services as you need them. We are fully insured and work by contract protective of both parties, with clear costs and services.

Project Management

Project management can be handled from start to finish on a wide variety of projects. When a contract is obtained, organizations and industries rely on TwinVert LLC for bonded, insured, accurate, transparent, timely and complete work from start to finish. Our core team is experienced in management, skilled at recruiting and have an established reserve roster of skilled professionals ready for travel and assignment for off and on-site work.

Project Examples

  • Surveying
  • Site Investigations
  • Remedial Actions
  • Landscape Design
  • System Analyses
  • Waste Management
  • Atmospheric Dispersion

Data Collection

Your organization may already have the data you need. During the initial consultation we can identify how far your geospatial data will get us to your goals. Occasionally, data collection is necessary to gain the additional mapping capabilities requested. Working as a team, we can often guide our clients to implement the necessary data collection steps on their own or, if requested, we can collect the data for you as part of our contract.

Here, the photograph shows Michael Menand using a tablet to collect location data.


We produce customized maps, presenting specific subsets of data. Whether your need is for a single elementary map, or for more complex maps with custom functionality, at TwinVert, we value quality and efficiency in producing the resolution and accuracy expected by our clients. The most commonly requested maps are visitor maps, merchandise/inventory maps, and client/marketing maps. Our capabilities allow for any type or style of map, so please let us know exactly what you're interested in as an end result of our services!

This photograph depicts Drew Derderian presenting a map assessment

Website Development

The final deliverable of many projects is a website. Typically, TwinVert LLC develops web-platforms using Drupal. This content management system is considered the forefront of website design by many and is often used on Federal Government websites. Its advantages include being opensource, ease of use, malleable for design control, and it provides a gamut of tools, continuously in development behind an large active user base. It's considered extremely secure, fast, and enjoyable to use. TwinVert LLC works diligently, offering fair proposals on and three fixed price specials to meet your needs from the basic training and assistance to help with a complete multi-language custom development.


Our consultants are trained in the usage of R (programming language) for advanced statistical analyses and GIS processing to obtain the outputs you need to get ahead. If you have a consistent need for data analysis, we will streamline the process using Python (programming language) scripting to increase the speed of delivery and decrease the cost for the outputs you need. Spatial analysis is a general ability to manipulate attribute data into different forms and elicit additional understanding of the relationships. Supplemental data is often a byproduct of mapping. The steps necessary to integrate this data into an accessible and useful format are of great value in applying the power of spatial analyses to solve problems.


A project can be delivered in a number of end formats. Digital products can be saved and shared in common document or graphical formats, as tabular reports, and as summaries of data. Maps can be provided both digitally and in hard-copy, including large format or map books. Use of information sharing platforms during all phases of production promotes collaboration and maximizes communication. We can even work to embed your end product into your website or a graphical user interface. Regardless of final delivery, TwinVert is here to help you save money, time, enhance efficiency, improve communication, and harvest insights that optimize decision-making.





Introduction to Geographical Information System (GIS)


A geographical information system (GIS) is a system developed to assemble, manipulate, analyze, manage and display data identified by location. The TwinVert team and other GIS analysts are viewed as modern-day cartographers. Historic maps show the rudimentary beginnings of GIS in the most simple form, presenting a visualization of the past. In central France, painted and sculpted onto the walls of Lascaux around 17,000 years before present (BP), the "Salle des Taureaux" depicts star systems as dots around representative animals, possibly even marking positions of stars which once existed but are now extinguished.

"Salle des Taureaux", in the cave of Lascaux located central France, depicting several star groups as animals. (Photo Credit: France, Ministère de la Culture et de la Communication)


One of the first applications of geospatial analysis was when John Snow discovered the source of the 1854 London cholera outbreak by marking points on a map where victims lived and then connecting a cluster to a water source, thus analyzing a geographically dependent phenomenon.

John Snow's 1855 map of the Soho cholera outbreak showed the clusters of cholera cases in the London epidemic of 1854.John Snow's 1855 map of the Soho cholera outbreak showed the clusters of cholera cases in the London epidemic of 1854.


Computers have replaced the chisels, paints, and pencils of the past. Data layers are shaped artistically and analysed mathematically to represent significant values and enable the user better insight into their projects. WiFi, satellite, and the mobile revolutions have allowed for the collection and use of increasing amounts of data in GIS. Today, decreasing technology costs and increasing efficiency expand the scope and applications of mapping in nearly every industry.



  • This photograph shows an satellite image of Denver International Airport.
    Transportation: The Denver International Airport and other airports around the world utilize GIS as a tool to assist air traffic controllers. Radar integrated systems automate flight trajectory calculations and probability analyses for early warnings.
  • This photograph shows satellite imagery of Hoover Dam.
    Energy: The Hoover Dam provides energy (7,500,000,000 kW-h) to nearly 8 million people. Geographical information systems are utilized as tools to manage power distribution in most municipalities.
  • This split image shows the satellite construction of the Gujarat International Finance Tec-City in India on the left and the concept interior on the right.
    Construction: Gujarat International Finance Tec-City is a 20 billion dollar project aimed to create a global financial hub. GIS reduces costs in similar projects through management efficiency and informed planning.
  • A satellite photograph of Cliff Creak in the Sequoia National Park.
    Natural Resources: Sequoia National Park utilizes GIS to manage their maps, management, research, and planning. Calculations are frequently made with GIS across the U.S., such as in timber sales and fire analyses.
  • Satellite imagery of both Horsetooth Reservoir and the Poudre River.
    Hydrology: The Cache La Poudre River in Fort Collins provides water to many communities and farms. GIS has been an important tool in analyses, planning, and flooding preparedness over the past decade.
  • A soil map showing the delineation of soil near Chambers Lake in Larimer County, Colorado.

    Research: Soil surveys performed by the US Geological Survey led to the creation of a number of layers that can be used in scientific study and planning. Researchers are constantly pushing the envelope and developing new and faster ways to quantify data.

  • A map of the eastern United States showing all of the tornado tracks of F4 and F5 tornadoes from 1950 to 2015.

    Weather: Tornado Tracks (a web map) maps tornado paths over a given number of years. High levels of public interest enable large sums of money to be invested in instruments and new satellites. The GIS applications are endless.

  • Here an image shows the Tesla way finding system behind their automated cars.

    Innovation: Tesla and Google have self-driving cars with lower accident rates than humans and now Space-X has achieved multiple vertical landings in the Falcon series of rockets. GIS will only continue to open doors to new technology!

About Spatial Analyses

New capabilities, including the increase in Open Source GIS components, allow for affordable problem-solving for business, industry and government, regardless of size, such as facility and land managers, agricultural operations, transportation and utility companies, health care entities, science researchers, sustainable developers, nonprofit organizations, community planners. Finding meaningful relationships of location-based data to events, assets, and methods involves layering multiple data sets and then organizing and interpreting them to achieve understanding of interactions. The primary files utilized in most GIS mapping are vector files and raster images.

This graphic shows the different layers and how they combine to compare and analyze many different aspects of the geographic data.

Vector files store and display geometry as lines, points, or shapes. They also associate a row of data to each geometry with up to 255 attributes in an attribute table. Most of our collected and digitized data is represented in the vector format because of the small file size and versatility behind these files. A search on google maps for a business name, the place of interest, or street name accesses and parses data from the vector files by querying (searching) the vector's attributes.

Raster Images are files containing a matrix of pixels, with each containing values, and where pixels are organized by rows and columns. Satellite imagery, aerial photos, and elevation data are examples of the raster format. They are most often used when continuous data becomes important for visualization.

Figure 2: The flow chart on the right shows a series of calculations and queries made to vector data to create a point density raster.

Shared by both raster and vector files, location is the primary property which enables GIS software to create files and additional attributes from calculations standard to map analyses. As multiple vectors and raster images are overlaid logical assignments can be made and the attributes associated can be merged, split, clipped, and manipulated by calculations into the files necessary for further analyses or visualization.

Figure 3: Here the tool in Figure 2 was used to manipulate point vector data to create the final map.

With careful planning, data collection and specific goals in mind, GIS applications produce the greatest value. A large amount of data is available for public for download. The sharing of information and location-driven data is intrinsic to planning and with the information gained from advancing technologies, decision-making can be effectively enhanced. Reports can utilize dashboards allowing end-users to easily click, pan, zoom in interacting with tables, graphs and maps, providing dynamic insight. Awareness of the influence of location on actions, functions and processes offers a new spectrum of knowledge for businesses and agencies that can ultimately drive success.

Practical GIS Applications - Examples

  • Field Inventories
  • GPS data collection and verification
  • Geospatial integration of documents and photos
  • Terrain modeling
  • Natural hazard risk modeling for risk management decision-making
  • Pest control and management
  • Location quality analysis for a new retail outlet
  • Species inventories
  • Space management
  • Geographic solutions for improved customer service
  • Cost analyses related to location
  • Manufacture, supply and delivery reports on geospatial logitics
  • Imagery analysis of land use, vegetation, and change detection
  • Soil mapping - info about soil suitability for various activities
  • Crop condition assessment, yield estimation, and monitoring
  • Detection of drainage problems in agricultural areas
  • Snow cover mapping and runoff prediction
  • Navigation - routing and scheduling
  • Fuels mapping and fire risk assessment
  • Spatially enabled reports generated on demand
  • Mobile applications providing mobile productivity and proactive data collection
  • Custom map product development