Celebrating 75 years in Business: 1946-2020
  • Land Development
  • Planning & Landscape Architecture
  • Water Resources
  • Environmental
  • Surveying & Mapping
  • Transportation
  • Utilities

Surveying and Mapping Services

Our surveying and mapping team has provided wide ranging and specialized services to many public, private, and industrial clients. Our extensive library consists of more than seven decades years of land records, early plats, survey drawings, and history in our area, helping us provide our clients boundary surveys that have measured and defined the lands in Florida.

In achieving a balanced relationship between land use, development, and conservation of our natural resource base, platting or the subdividing of lands is used to promote the wise use of land. Our team is knowledgeable of local land development codes, statues, and platting requirements. As a result, we work closely with real estate attorneys, land developers, and lending institutions to provide American Land Title Association (ALTA) surveys needed during the title process when dealing with valuable commercial properties. We create sketches and legal descriptions of real property, easements, water bodies, and conservation areas using graphic and verbal means that mathematically articulate these features.

A strength in our survey group is the use of global positioning systems (GPS), digital levels, improved aerial imaging and traditional survey methods to provide record mapping services to show clients, building officials, and general contractors existing conditions prior to a project followed by the conditions after construction. This helps see how closely projects are built according to the plans. This element is beneficial to our construction layout specialists. They know the importance of translating the elements and features shown on engineering drawings or construction plans to actual locations on the ground. Construction layout is an essential service provided to land developers, general contractors, and civil engineers helping to bring the designer’s vision to reality. In addition, our surveyors provide support services to aerial mapping firms. Photogrammetrists and cartographers benefit from land surveyor’s support to help them align or establish these aerial images in time and space. Using GPS and other conventional means of surveying, aerial targets are established or located so that these images are validated to the local horizontal and vertical datum.


Utility Mapping

Not far below the everyday places we walk and drive exists a maze of utilities. This unseen “super highway” of conduits carry water, sewer, electricity and telephone to our homes and businesses. Utility conflicts can cause delays and service interruptions. Our Subsurface Utility Exploration (SUE) team can identify potential conflicts or impacts for proposed utilities improvements. Comprehensive and accurate underground utility location and mapping of these vast and complicated networks has become a critical and essential asset to utility providers, general contractors, and municipalities alike. We provide comprehensive and accurate underground utility mapping using non-invasive investigations to locate utility lines, rock strata formations and even groundwater tables. Using Ground Penetrating Radar (GPR) and Subsurface Utility Exploration (SUE), we provide a non and minimally invasive underground location and recovery. Our custom-built StarVAC soft dig vehicle uses a 1200-gallon spoil tank and 28 inches of vacuum power to quickly perform underground investigations. We are able to uncover various underground utilities and create enhanced mapping opportunities for our clients.


Transportation Surveying

Transportation surveying serves as the foundation for all right of way and roadway design projects and is a specialized support service provided to engineers, roadway designers, planners, state, and local departments of transportation. Our team combines both new and traditional survey methods and technologies to offer our clients digital surface terrain models, underground utility location and quality maps produced from a variety of sources, and precision global positioning systems (GPS).

Our team uses the latest software platforms and field surveying techniques to produce digital models of the surface terrain of the earth in three dimensional graphics. These models provide a virtual rendering of existing ground contour conditions on project locations, enabling us to produce high quality and cost effective design solutions. In addition, our team prepares quality maps from deeds, plats, tax maps, and field surveys. As a cost saving measure these maps illustrate the impact to local landowners and governments while maximizing opportunities for roadway project management. Combined with traditional surveying methods, our team uses precision GPS and classical geodetic methods, to provide the “framework” used to control the horizontal and vertical aspects of all stages of transportation projects. This service also enables our topographic and photographic data to be used on ground based survey support to align the survey data in space.


Hydrographic Surveying

Johnson Engineering offers hydrographic surveying, which provides maps showing 3-D modeling or contours of area marine channels, canals and lakes. The results of the survey can also show marine geological features that pose a hazard to navigation such as rocks, shoals, reefs. The data produced may be required prior to any engineering design and to obtain the necessary permits. Hydrographic surveying is performed by using GPS, sonar-like dept recorders and Hypack Max software to produce virtual digital terrain map of the underwater topography. These models can be helpful in analyzing how incoming and outgoing tides affect the movement of sand or other organic materials. We have the ability to map the depth of the organic or silt layers on the bottom, which assist authorities in keeping them operable and clean. They also help determine if channel modifications are needed or assist in obtaining accurate volume and quantity information for excavation or nourishment efforts. These models are rendered in AutoCADD and other programs, then gleaned and transmitted to clients in a variety of formats.


Geographic Information Systems (GIS)

All data has a spatial component. Our GIS team can help you turn your data into valuable insight. We use ESRI’s ArcGIS technology to provide an array of interactive digital mapping, data management and spatial analysis and 3D modeling solutions. Tailored web-based applications may be developed for secured, client-only access or for public presentation of maps and support analysis of spatial data.

Government agencies depend on our layer development to broaden their spatial data inventory. Scenario development also is used for population projections and subarea demographic/market analysis. Developers rely on our GIS modeling capabilities to target their investments. Using GPS and related survey methods to compile field data, then integrating those data into a GIS to support asset management and inventory analysis. These services include National Pollutant Discharge Elimination System (NPDES) facilities management. We explore various use configurations and intensities on a site based on each site’s unique characteristics. GeoCadastre combines field survey measurements, historic land records and deeds, survey points to link parcel feature geometry to produce a spatially accurate, GIS related cadastral “fabric” of land lines and parcels. Geotechnical engineers utilize data obtained from soil samples, monitoring wells and test holes to examine soil conditions and strata. This information is critical in assessing the suitability of sites for development or construction and our surveyors have often provided reliable support to these professionals in their endeavors.

Using GPS, conventional surveying and subsurface utility engineering, our team can provide GIS utility mapping, including asset management, inventories, systems analysis tools and real time system conditions and monitoring. We locate and identify the elements, attributes and condition of these networks and offer a true working model to our clients. We also offer the support, update and maintenance of our GIS deliverables to ensure that our clients have the most up-to-date and accurate mapping resources available.