Geospatial Survey
ConTec has provided geospatial services covering large regions encompassing hundreds of villages under various mandals and their respective districts, patches of vast rivers along with their tributaries, large tracts of barren lands devoid of development, kilometres of standing canals, foreshore areas of existing and contemplated reservoirs including downstream sections of existing hydraulic structures in need of urgent and timely repairs.
The services provided by us are Geotagging, Topographic Survey by conventional as well as Unmanned Arial Vehicle (UAV), Imagery and Videos Development accompanied by features identification by UAV Photography, Ground Control Points recording for various purposes including DEM Calibration, Reservoirs Capacity Assessment, Land Plan Schedules.
ConTec utilizes GIS technology to offer best-in-class geospatial mapping services and precise civil engineering solutions to its clients. ConTec has extensively used GIS technology for mapping terrain and project features of some of the large projects in the field of Irrigation, Hydro Power and Solar Power covering total area of more than 8 Lacs acres. Results are more accurate than the conventional methods. Large data can be preserved for further use and analysis based on the future requirement of the projects.
Service Details
Apart from Topographic survey by flying drone (UAV), ConTec has expertise of topographic survey through conventional methods. We use Auto-levels, Total Stations, DGPS equipment for collection of ground data and representation of the same by using CAD software as per requirement of the project. We have covered more than 5 lac acres of Command area development survey & in excess of 2000 kms of canal alignment survey.
ConTec utilizes GIS technology to offer best-in-class geospatial mapping services and precise civil engineering solutions to its clients.
ConTec has extensively used GIS technology for mapping terrain and project features of some of the large projects in the field of Irrigation, Hydro Power and Solar Power covering total area of more than 8 Lacs acres. Results are more accurate than the conventional methods. Large data can be preserved for further use and analysis based on the future requirement of the projects.
ConTec has used Geographical Information System to Geo-reference, Contour generation and Geo-Tag project and ground features of some of the following large projects,
- S K K Yerrakalwa Reservoir Project.
- K O R Gundlakamma Reservoir Project.
- Tungbhadra Dam Foreshore Area.
- Sitamma Sagar Multi-Purpose Project.
GIS based services provided by ConTec:
Planimetric Mapping Services ConTec provides detailed and comprehensive planimetric mapping services by integrating Geographic Information Systems (GIS) and domain knowledge to create useful output of topographic and planimetric maps.
Orthophoto Development Services
Our orthophoto development services include:
- Orthorectification of satellite imagery.
- Orthophoto mosaics development.
- Geo-referencing services.
- Digitization.
- Maps for Geographic Information System
Photogrammetric Services
Our orthophoto development services include:
Photogrammetric survey is the answer to high precision and high-speed requirement of today’s fast paced project needs.
ConTec uses Spatial Technology and GIS for cost-effective and speedy completion of Projects covering large areas such as irrigation projects, Ultra Mega Solar Parks, Urban Planning and development, Land Development etc., Our Photogrammetry services include:
- Aerial photogrammetry.
- Digital Elevation Model (DEM).
- Contour Generation.
- Digitization.
- Orthophoto Production
- Digital Terrain Models
- Terrain mapping
Terrain Modelling Services
Common uses of models include:
- Extracting terrain parameters
- Volume calculations.
- Modelling water flow or mass movement.
- Creation of relief maps
- Rendering of 3D visualizations
- Creation of physical models
- Orthorectification
Digital Elevation Modelling Services
Digital Elevation models (DEMs) are utilized in support of Engineering Designs, Construction activities, Mining and Pre-planning or lay out of Corridor Surveys, Land Development, Environmental and Geological surveys. Some of Our Most Popular DEM Applications
- Terrain parameters extraction
- Gravity measurements terrain correction or reduction
- Modelling water flow or mass movement.
- Ortho-rectification
- Terrain analysis
- Creating Physical Models and Relief maps
- 3D visualization Rendering
- Volume Calculations
Aerial Imagery
Aerial Photogrammetry
Applications of aerial imagery include:
- Engineers rely on aerial imagery to plan / design major infrastructure projects.
- Government use aerial imagery to improve town planning, help monitor and manage environmental changes.
- Mining companies use aerial imagery to help quantify and manage disturbance and rehabilitation.
- Emergency services rely on rapid-response aerial imagery to help assess damage caused by natural disasters and plan future mitigation strategies.
Applications of Aerial Photogrammetry include:
- Topographic mapping
- Preparation of Land Use maps
- Precise mapping of building outlines and roof structures to create 3-dimensional models.
- Volumetric determination of stockpiles.
ConTec has used Aerial Imagery & Aerial Photogrammetric survey of vast areas of land for Irrigation projects, Solar power projects and Hydro power projects. The Technology was used to capture photos using unmanned aerial vehicle (UAV). The imagery captured is processed in different softwares to extract the required data for the project.
By using drone based Aerial survey (Photogrammetry), ConTec has prepared DPRs for CADWM works, Dam foreshore features mapping and assessment of health of Large Dams and Spillways.
View The Fields We Work
Engineering ServicesView The Sectors We Work
Irrigation & Water ResourcesKey Projects
Hydro Power
Run-of-the-river Hydro Electric Project of proposed capacity 320 MW (8 x 40 MW) across River Godavari at Dummugudem, Khammam District, Telangana State
Geospatial Survey
The Detailed Project Report (DPR) is prepared for developing a 320 Mw run -of-river hydroelectric power project by constructing a gravity dam across River Godavari at Dummugudem village, Khammam district in Andhra Pradesh for APGENCO. The Detailed Project Report (DPR) is prepared by ConTec in line with the Guidelines laid down by Central Electricity Authority (CEA) for formulation of Detailed Project Report (DPR)s for Hydro Electric Schemes, in compliance with the requirement of Section 8 of the Electricity Act, 2003.
The 2500 Cr. project envisages construction of a gated spillway in the deepest course of River Godavari, sandwiched between concrete overflow sections (auxiliary spillways), with a bridge proposed to connect with the earth and rock fill dam on both sides to pass a design discharge of about 1,00,000 cumecs. The power house is located within the concrete non overflow section on the right bank immediately after the right concrete overflow section. The work is done for Andhra Pradesh Power Generation Corporation (APGENCO).
Run -of-the-river Hydro Electric Project of proposed capacity 280 MW (7 x 40 MW) across River Godavari at Kanthanapally, Warangal District, Telangana State
Geospatial Survey
The objective of the Detailed Project Report (DPR) is prepared for developing a run -of-river hydroelectric power project by utilizing the head created by construction of a gravity dam across river Godavari at Kantanapally village, Warangal district in Andhra Pradesh for APGENCO. The study aims at providing the best and most suitable option and specify the design features for optimum overall river basin development of the river for power generation.
The Detailed Project Report (DPR) is being prepared by ConTec in line with the Guidelines laid down by Central Electricity Authority (CEA) for formulation of Detailed Project Report (DPR)s for Hydro Electric Schemes, in compliance with the requirement of Section 8 of the Electricity Act, 2003.The work is done for Andhra Pradesh Power Generation Corporation (APGENCO).
Standardization of Godavari River Flood Banks, Andhra Pradesh
Geospatial Survey
Godavari River is a major waterway in central India. The upper waters of the Godavari are scarcely utilized for irrigation, but the entire delta has been turned into a garden of perennial crops by means of the anicut at Dowalaiswaram, constructed by Sir Arthur Cotton 145 years ago.
The river enters the Andhra Pradesh near Bhadrachalam and flows touching the towns such as Godhavarikhani, Rajahmundry, Kovvur, Tallapudi and Narsapur in a southeast direction until it empties into the Bay of Bengal through two mouths. Whenever the discharge in river Godavari exceeds 28,320 Cumecs the water level in the river raises above the adjoining lands in the delta, affecting crop in 4.0 lakh hectares of rich cultivable land as also affecting the livelihood of 3.5 million people. Based on the experience of past floods, it was proposed to raise the flood banks by 2.00 m over the observed maximum flood level (OMFL) of 1986 flood and widen the banks to the standards for the length of 405.50 Kms.
Detailed Project Report for Standardization of Vamsadhara River and Nagavali River Flood Banks, Andhra Pradesh
Geospatial Survey
Vamsadhara & Nagavali Rivers witnessed the brunt of flash floods by two successive depressions in the Bay of Bengal coupled with heavy rainfall in its catchment areas in Orissa and Andhra Pradesh during July and August 2006. The flood waters breached the banks at several locations inundating 719 villages in 38 mandals in Srikakulam District.
The total length of flood banks of Vamsadhara & Nagavali rivers in Srikakulam and Vizianagaram Districts is about 134 Kms. Out of which 33.1 Kms length of flood banks is along Nagavali River and the balance length of 100.9 Kms along River Vamsadhara. With the experience of the past floods, it was proposed to raise the flood banks by 2.00 m over the observed maximum flood level (OMFL) of 1986 & 2006 flood for Vamsadhara & Nagavali Rivers respectively.
Raising of Dummugudem Anicut, Bhadradi-Kothagudem District, Telangana
Geospatial Survey
The government of Telangana contemplated to augment the storage capacity of the Dummugudem Anicut across River Godavari at Dummugudem village, Khammam district in Telangana State by raising the crest level by one meter from the present level at El. +49.690 m to El. +50.690 m. The scope of the Detailed Project Report included conducting topographic survey and geotechnical investigations, study of upstream submergence, checking the suitability and stability along with hydraulic and structural design for raising of crest level of the existing Anicut, cost estimate etc. The detailed project report was prepared in line with the guidelines laid down by Central Water Commission.
Modernisation of Six Medium Irrigation Schemes with JICA Assistance, Three Districts, North Andhra Region, Andhra Pradesh
Geospatial Survey
With the broad objective of enhancing the livelihood of beneficiaries in the project target area, government of Andhra Pradesh has taken up Andhra Pradesh Irrigation & Livelihood Improvement Programme (APILIP-II) with the assistance of Japan International Cooperation Agency (JICA). ConTec was awarded with the contract for preparation of detailed project reports for modernisation of one major and seven minor irrigation projects for stabilisation of 43051 Ha. of CCA spread over seven districts of Andhra Pradesh.
The task was successfully completed by ConTec and necessary clearances were obtained from the Central Water Commission (CWC) prior to the final approval of the project in the 135th meeting of the advisory committee of MoWR, RD & GR. Apart from the preparation of DPR’s for modernisation of eight irrigation projects assigned, ConTec was instrumental in obtaining the necessary approvals from the various directorates of the CWC for one major irrigation and nineteen medium irrigation projects in total.
Solar Power
Preparation of DPR & Detailed Engineering for Establishment of Ultra Mega Solar Parks for APSPCL & APGECL
Andhra Pradesh Solar Power Corporation (APSPCL).
ConTec has prepared the detailed project report and detailed design engineering for developing civil infrastructure for establishment of Kurnool Ultra Mega Solar Parks (1000 Mw), Ananthapuramu Ultra Mega Solar Park I & II (2000 Mw) and Kadapa Ultra Mega Solar Park (1000 Mw) for Andhra Pradesh Solar Power Corporation Limited (APSPCL) along with Kolimigundla (3300 Mw) & Mudigubba (2000 Mw) Solar Parks for Andhra Pradesh Green Energy Corporation Limited (APEGCL). The work involves geospatial survey, geotechnical investigation, detailed engineering, including design of roads, cross masonry & cross drainage works, water supply & distribution, transmission towers, cable racks etc. and preparation of DPR. At the time of commissioning “Kurnool Ultra Mega Solar Park (1000 MW)” was the world largest solar power park.