Our Services
TOPOGRAPHIC SURVEYS
Providing Topographic Surveying and Mapping Services for many types of projects, JMc has performed plans and site condition surveys for hundreds of projects.
TERRESTRIAL SCANNING
Providing Terrestrial Scanning since 2020, our company has performed digital scanning on roadway and railroad bridges, drainage culverts, weirs, and more.
HYDROGRAPHIC SURVEYS
A specialist in Hydrographic Surveys, JMc has completed jobs on the Mississippi River, Yazoo River, Tallahatchie River, Ouachita River, White River, Red River, and more.
CONSTRUCTION SURVEYS
Johnson-McAdams Surveying & Mapping has completed numerous construction layout surveys for the U. S. Army Corps of Engineers as well as private industry….
GPS CONTROL SURVEYS
With the latest in equipment and experienced personnel , Johnson-McAdams Surveying and Mapping can provide First Order Horizontal and Vertical Control Surveys for your project….
BOUNDARY SURVEYS
Performing a wide scope of Boundary and Cadastral Surveys, our Registered Land Surveyors with extensive experience in property surveys.
MAPPING AND GIS SERVICES
Johnson-McAdams Surveying & Mapping, LLC has the personnel and experience to provide digital and printed mapping and drawings for any engineering and design project….
Topographic Surveys
Johnson-McAdams Surveying and Mapping, LLC provides Topographic Surveying and Mapping Services for many types of projects. Automated topographic surveys have been performed using automated OTF/RTK surveying systems as well as conventional Total Stations with Data Collectors formatted for entry into the company’s CADD system. JMc crews have performed plans and specification surveys and site condition surveys for hundreds of projects.
Field data comes into the office in data collector file format, then mapping is performed using the firm’s integrated automated mapping systems for the preparation of planimetric, contour and ownership mapping. The firm’s personnel and equipment enables processing of the final product in any client-specified format required. Mapping can be provided in both MicroStation or AutoDesk platforms. Additional information can be generated from 3D models such as cross-sections, profiles, volume computations and comparative or monitoring surveys. The firm’s crews also have the capacity to process and map field data on site for emergency type surveys.
Johnson-McAdams has eleven (11) Trimble OTF/RTK GPS Systems that are compact and highly mobile, each consisting of two receivers with Real Time Kinematic (RTK) and On-the-Fly (OTF) options. These differential GPS systems allow the survey team to work freely throughout suitable sites and gather centimeter accuracy data in the data collector real time. These systems combined with all-terrain vehicles provide fast and high accuracy control for topographic surveys. Our field personnel are experienced in performing topographic surveys using Dual Frequency Vehicle Mounted OTF GPS and RTK, or Quick Static systems.
Topographic Surveying Experience Includes:
- Engineering Design Surveys
- Water Control Structures and Weirs
- Streams, Canals and Drainage Ditches
- Dams, Pumping Plants, Control Structures & Floodways
- Monitoring Surveys
- Beaches & Breakwaters
- Route Locations
- Parks & Recreational Areas
- Harbors, Dikes and Revetments
- Military Installations
- Levee, Berms and Borrow Areas
- Roads, Utilities and Site Work
- As-Built Surveys
Hydrographic Surveys
Johnson-McAdams Surveying and Mapping, LLC is a specialist in Hydrographic Surveys, completing jobs on the Mississippi River, Yazoo River, Tallahatchie River, Ouachita River, White River, Red River, Atchafalaya River Basin, Black Warrior River, Alabama River, Tenn-Tom Waterway, Corps of Engineers reservoirs, bays/harbors/beaches, inland navigation projects and many smaller rivers and streams.
JMc has experience performing automated hydrographic surveys utilizing DGPS technology.
Our fleet includes two (2) 23-foot cabin hydrographic boats, a multibeam hydrographic sweep system, and automated real time DGPS hydrographic survey systems for use on hydrographic survey projects. DGPS guidance control systems are available on all vessels. DGPS systems are capable of acquiring data in real time from many miles offshore.
Our staff has collected gage and discharge measurements on the Mississippi River and its tributaries including large and small streams.
Hydrographic Experience Includes:
- Pre- & Post-Dredging
- Channel Ranges
- Gage & Discharge
- High & Low Water Profiles
- Tidal Surveys
- Beach Erosion
- Navigation Channels
- Revetment & Dikes
- Hydrographic Mapping
- Water Stage Demarcation
- Waterway Construction
- Shoal Monitoring
- Erosion & Sediment Monitoring
- Potamology
Single Fathometer Hydrographic Surveys includes projects involving revetment before- and after-construction, small stream hydrographic contouring surveys, and numerous single fathometer hydrographic surveying of lakes, streams, rivers, and other waterways. JMc has numerous single fathometer systems including Radio Navigation Beacons with DGPS capability, IMC Hydro I automated hydro systems, Echo Trac 3200 Depth Recorders, and two (2) Sonarmite HydroLite BTX systems that enables our crews to collect hydro data in any size vessels for surveying in extremely small streams and water features.
Our Multibeam Hydrographic Sweep system includes a Teledyne Odom MB2 multibeam head, SVP70 Real Time Sound Velocity Probe, Integrated Applanix POS MV Wavemaster, and CastAway CTD Water Profiler.
GPS Control Surveys
Johnson-McAdams Surveying and Mapping, LLC has the latest in equipment along with experienced personnel to provide First Order Horizontal and Vertical Control Surveys for your project. JMc has been providing GPS control surveys including all orders of surveys for:
- New Benchmark Network Surveys
- Aerial Photography
- Dam Deformation & Monitoring
- Surveys
- River Surveys
- Cartographic Surveys
- Engineering Surveys
- Precise Structural Deformation Surveys & Studies
- Construction Layout & Alignment Surveys
- Property/Boundary Demarcation Surveys
- Location Surveys
Terrestrial Scanning
Johnson-McAdams Surveying & Mapping, LLC has provided Terrestrial Scanning since 2020. Our company has performed digital scanning on roadway and railroad bridges, drainage culverts, weirs, flood control structures, piers, floodwalls, overhead utility lines, buildings and hard to reach topographic features.
Our Trimble SX10 Scanning Total Station has the ability to gather both digital scan data as well as continuous photography of the feature being surveyed. This instrument can also dramatically improve safety by scanning features without putting workers in dangerous situations.
JMc CADD/Terrestrial Survey Technicians have received advanced training in editing and processing the point cloud data. Using TopoDot Point Cloud processing software, we are able to produce 3D vector line CADD files for use in site analysis or design.
Using the Trimble SX10 Scanner and TopoDot software, we are able the extract such features and roadway paint striping, topographic breaklines, structure and building features, electrical power poles and transmission towers, overhead low wires elevation, rail lines, roadway and levee signage, and numerous other site project features.
Construction Surveys
Johnson-McAdams Surveying & Mapping, LLC has completed numerous construction layout surveys for the U. S. Army Corps of Engineers as well as private industry.
This experience includes performing construction layout services as the survey support contractor for the government revetment construction project along the Mississippi River, Upper Yazoo Project (UYP) dredge operations construction surveying, construction staking and layout for several Mississippi River Levee (MRL) projects in the Vicksburg District, and numerous construction surveying for various buildings and site work projects throughout the southeastern states.
Safety is our priority….
Our employees are highly trained in this area of surveying and work with the latest in construction surveying equipment including RTK-GPS systems, laser leveling equipment and robotic total stations.
All of our crew party chiefs are First Aid/CPR certified, and we practice safe working procedures for all JMc field employees. Safety meetings are held at the start of each work week, emphasizing safe working procedures for all construction surveying projects. Each survey crew has a copy of the U. S. Army Corps of Engineers EM 385-1-1 Safety & Health Requirements Manual. The safety manual is the guideline for all JMc field and office personnel.
Boundary Surveys
Johnson-McAdams Surveying & Mapping, LLC has performed a wide scope of Boundary and Cadastral Surveys.
These surveys were performed by in-house JMc personnel licensed in Mississippi, Louisiana, Arkansas, Tennessee, and Alabama. Johnson-McAdams Surveying & Mapping has two in-house Registered Land Surveyors with extensive experience in property surveys.
Related experience includes:
- Court Appointed Surveys to Resolve Boundary Disputes
- Boundary Line Establishment
- Corner Monumentation
- R.O.W. Acquisition Surveys
- Ownership Determination
- High Pool Land Rights
- Deed Research
- Re-tracement Surveys
- Subdividing of Property
- Preparation of Plats and Legal Description
Boundary Survey of Zone “aA” Dam Spillway, Lake Oachita, AR For the Vicksburg District Corps of Engineers
Mapping / GIS Services
Johnson-McAdams Surveying & Mapping, LLC has the personnel and experience to provide digital and printed mapping and drawings for any engineering and design project. Processed and plotted mapping, 3D Models and cross section data can be provided on any media required. Johnson-McAdams personnel have wide-ranging experience providing mapping in MicroStation, OpenRoads and OpenSite software platform (.DGN, .ALG, .DTM, .TIN and .TTN) formatted files as well as Civil3D (.SBDX) and AutoDesk (.DWG) files.
We have the experience to provide GIS data collection and processing for ESRI compatible projects.
Experience and Training…
JMc CADD technicians have long-standing experience and training in working with ARC GIS data software including .SHP files and Personal Geodatabases. Our staff is proficient with the automated systems and provide excellent manpower and expertise to accomplish any tasks required by our clients with exceptional results. JMc CADD, mapping and data processing personnel have completed numerous continuing education courses in Civil 3D, MicroStation, OpenRoads and OpenSite software.