Koya DEM & Contour Mapping -- 2

@dissanayakepvt

Hello, I can create a clean Digital Elevation Model (DEM) and 10-meter contour lines for the Koya study area. I recommend starting with SRTM data, followed by processing in ArcGIS to ensure a reproducible workflow. Deliverables will include: • GeoTIFF DEM and contour layer in SHP format • Print-ready PDF layout with essential map elements • All project files for reproducibility I will ensure alignment with your boundary and the expected elevation range. Could you confirm the boundary file format you'll provide? If this aligns with your needs, I’d be glad to discuss details and start right away. Best regards, GISPromo IT Solutions

@arslanu2

Hi! I am proficient in MS Excel, Google Sheets, Spreadsheet accounting, and its use in business and analysis. I can accurately enter, arrange, analyze, and present your data. Let's Connect

@Bolajisamuel

Hello, I can provide you the contour of your study area using SRTM dataset, I have experience processing satellite LiDAR data and if research permit we can get higher resolution for your engineering interpretation, kindly chat me up and let’s discuss. Looking forward to your response soon. Thanks Regards, Sam.

@GISspecialist23

As a GIS specialist with over 10 years experience, I can deliver a good work for you. I have done a lot of similar projects and I will do a professional work for you

@ZouityW

I already see a clean way to execute this. You need a reliable Digital Elevation Model and contour lines for accurate engineering planning. I am new to this platform but not to doing focused high quality work. I treat every project as a chance to prove myself so expect clear communication and careful execution. I will use either SRTM or a higher-resolution DEM to create a seamless, clean surface without holes or spikes. The contours and GeoTIFF will be aligned correctly in your chosen coordinate system with a professional, user friendly output. My skills include GIS mapping, data processing, and creating reproducible workflows. Working with me means extra attention to detail and strong value for your budget. Lets chat more about your project, worst case you walk away with a free strategy session Regards, Ilyaas

@ayouuuuuub

Hello, I’m a GIS & Remote Sensing Specialist / State Engineer in Soil and Water Resources with proven experience delivering clean, engineering-ready spatial datasets for environmental and planning projects. I work fluently in ArcGIS and QGIS, combine advanced raster processing with Python-based validation, and produce publication-quality maps through fully reproducible workflows. This project involves three key challenges: selecting a reliable elevation dataset for the Koya study area, conditioning the DEM to remove sinks, holes, and spikes while preserving true terrain behavior, and generating accurate 10-meter contours and cartographic outputs that align perfectly with your boundary and coordinate system. My expertise directly addresses each step. I will start with Copernicus DEM (30 m) or ALOS PALSAR (12.5 m) depending on terrain complexity and availability, then apply rigorous DEM conditioning using standard hydrological and statistical tools. Every step will be documented for full transparency and academic traceability. You will receive a clean GeoTIFF DEM, precise 10-m contours, a print-ready PDF layout, and all project files and metadata—ready to open, verify, and reproduce confidently in ArcGIS or QGIS. I have already delivered a similar contour-mapping project; you can review it on my profile as a reference. I’m fully available and committed to delivering accurate, dependable results you can trust for engineering planning.

@proggon

Hi there, I understand you’re looking to create a reliable Digital Elevation Model and a set of precise contour lines for the Koya study area to support your engineering planning. Ensuring the final surface is accurate and free of any anomalies is critical, and I’m here to help you achieve that. For this project, I propose using high-resolution data like SRTM combined with advanced processing techniques in QGIS to create a clean and reproducible workflow. I’ll ensure that the GeoTIFF DEM and the contour layer are clearly labeled and aligned with the provided boundary, making them simple to incorporate into your drawings and presentations. Additionally, I’ll prepare the print-ready PDF layout with all necessary elements, adhering to your requirements while including detailed metadata to facilitate the recreation of results in your preferred software. Before I begin, could you share your preferred data source for elevation? This will help me tailor the workflow accurately for you. https://www.freelancer.com/u/proggon Best regards, Wahaj Barlas.

@temciucv

Hello Begard K., We went through your project description and it seems like our team is a great fit for this job. We are an expert team which have many years of experience on Data Processing, Excel, Cartography & Maps, AutoCAD, Geolocation, Remote Sensing, Geospatial, Geotechnical Engineering, Data Visualization, ArcGIS Lets connect in chat so that We discuss further. Thank You

@lukiarenas

GIS expert available NOW for your Koya DEM project. QGIS workflow: SRTM/AW3D30 clip to boundary → fill sinks/spikes (SAGA) → 10m contours SHP → print-ready PDF layout (legend/scale/north arrow). Deliverables: Clean GeoTIFF DEM, labeled contours GeoPackage, PDF map + reproducible step-by-step guide. Experience: 100+ DEM projects processed. Perfect CRS alignment for AutoCAD drop-in. Questions: Preferred DEM resolution? Specific CRS? Ready to start immediately!

@Lecheyyy

I am writing to express my interest in the GIS Specialist role for the Koya study area. With my expertise in terrain analysis and spatial modeling, I am confident in delivering the high-quality, "engineering-ready" topographic data you require for your academic report. Data Source Recommendation For 10-meter contour intervals, I recommend using ALOS PALSAR (12.5m resolution) or Copernicus DEM (30m) rather than standard SRTM. ALOS PALSAR provides a finer resolution that ensures more natural and accurate contours for engineering planning. Reproducible Workflow To ensure full transparency for your report, I will follow and document these steps: Preprocessing: Reprojecting data to the correct local UTM zone and clipping to your boundary. Surface Cleaning: Applying the Fill tool to remove sinks and smoothing spikes to ensure a hydrologically sound surface. Analysis: Extracting 10m contours using surface analysis algorithms. Cartography: Designing a professional PDF layout with a north arrow, scale bar, and legend. Deliverables GeoTIFF DEM: Clean, hole-free elevation model. Contour Layer: 10m intervals in SHP or GeoPackage format. PDF Map: Print-ready layout with clear labeling. Replication Package: All project files and metadata to recreate results. I prioritize technical accuracy and coordinate system alignment. I am ready to begin as soon as the boundary file is provided.

@dilshanh3

I am a GIS specialist with strong experience in DEM processing, contour generation, and engineering-grade terrain analysis using ArcGIS and QGIS. I understand that your Koya study area requires a clean, reliable elevation surface suitable for engineering planning and academic reporting, with no sinks, spikes, or gaps. I will begin with a trusted open DEM such as SRTM 1 Arc-Second (30 m) or ALOS PALSAR (12.5 m), subject to your approval before processing. Your supplied boundary will be used to ensure exact spatial alignment. All datasets will be reprojected into the correct coordinate system to ensure compatibility with drawings and presentations. My reproducible workflow includes DEM clipping, sink filling, artifact removal, surface validation, and controlled smoothing only where necessary to preserve terrain integrity. From the corrected DEM, I will generate 10-meter interval contour lines, validating elevation ranges through sampling. Deliverables include a GeoTIFF DEM, 10 m contour layer (SHP or GeoPackage), and a print-ready PDF map with legend, scale bar, north arrow, and clear labeling. I will also provide all project files, metadata, and documented steps so the workflow can be fully recreated in ArcGIS or QGIS. All files will open without error, align perfectly with the boundary, and meet your acceptance criteria. I will confirm the data source and workflow with you before starting.

@joyu83

Hello, I can assist with generating a clean, engineering-ready Digital Elevation Model (DEM) and 10-meter contour dataset for the Koya study area. I understand this work will support academic and engineering planning, so accuracy, consistency, and a fully reproducible workflow are key priorities. Using Copernicus DEM GLO-30 (recommended for its cleaner and more consistent surface than SRTM), I will produce a conditioned DEM free of sinks, spikes, and data gaps. All outputs will be aligned in WGS 84 / UTM Zone 38N (unless you prefer otherwise) and clipped exactly to the supplied boundary to ensure perfect spatial alignment. Deliverables Cleaned GeoTIFF DEM 10-meter contour lines (SHP or GeoPackage) Print-ready PDF map with legend, scale bar, and north arrow ArcGIS project files and metadata for full reproducibility Workflow Verify boundary and CRS → acquire DEM → reproject and clip → surface conditioning → elevation validation → contour generation → final map layout → package project files. All deliverables will open without error, align precisely with the boundary, and display the expected elevation range for engineering and academic review.

@venkatgeotech

With over 10 years of experience GIS Data Migration aimed to Migrate Vector & Raster Datasets in Arc GIS to create a standard ESRI based Geodatabase for online storage. Some of the key performances as follows for your information • Assisting the Classification of their respective Feature Datasets and Feature classes and Mapping the attributes in Source file to respective Target Fields as per the client requirement. • Enhancing the Geometry features and attributes as per the client requirement by using Arc GIS and MapInfo • Assisting in Assign Projection, Re Projection & Transformation & Tab to Shape conversion to source files. • Responsible for data quality and consistency while Migration process. • Excellent knowledge in creating of Geological database model and migrating existing data into a GIS format • Perform solving of Auto checks as described in the respective project process flow • Keep workflow management updated for efforts as well as outputs on a regular basis as defined by the processes. By choosing me, you're partnering with an expert who's dedicated to delivering high-quality work that meets your specific requirements. My approach is always client-centric - available 24/7 for communication, providing unlimited revisions to ensure your absolute satisfaction with the final product. Let's collaborate on this project to design to scale to state wide datasets while minimizing reliance on ArcGIS Online for storage and compute.

@Geraldinerada

I propose using elevation data available through the Alaska Satellite Facility (ASF), specifically ALOS PALSAR–based DEM products, which offer higher spatial detail than standard SRTM and are well suited for terrain analysis. If required, I can also evaluate SRTM 1 Arc-Second or Copernicus GLO-30 depending on coverage quality and your preference. Workflow (reproducible QGIS/ArcGIS process) Load project boundary and define the target CRS. Download and mosaic DEM tiles covering the full extent from ASF. Reproject to the project CRS (if needed) and clip to the exact boundary. Perform terrain conditioning: fill sinks, remove voids, smooth noise peaks, and ensure hydrological correctness. Quality check: verify elevation range, inspect profiles, and compare against reference points (if available). Generate 10-m contour dataset with clean topology. Produce a clear printable map layout with legend, scale bar, north arrow, labels and metadata. Package full project files and document every processing step so it can be reproduced. Deliverables GeoTIFF DEM covering the full project extent (void-free, conditioned) 10-m contour layer in SHP or GeoPackage Print-ready PDF map Full project files + workflow documentation to ensure traceability Acceptance Files will open without errors Correct alignment with your study boundary Realistic elevation values verified by sampling Kind regards, Geraldine

@OleksiiQgis

I have experience working with DEM data in the QGIS environment. The task will be carried out using the coordinate system you require. I propose using the Copernicus DEM or OpenTopography DEM.

@LeandroLemos08

DTM✅ DSM✅ GIS✅ GEOPROCESSING✅ Atuo diretamente com curvas de nível para elaboração de projetos de terraceamento na empresa onde trabalho, o que facilita no tempo de entrega, atuo diretamente em processamento de imagens elaborando DSM e DTM para desenvolver análises sobre o relevo do terreno, faz parte do meu dia a dia, que devido à urgência do projeto seria imprescindível.

@nadiaz90

HHello, I am Nadia Zikiou, a GIS and remote sensing specialist with over 10 years of experience in DEM processing, contour generation, and terrain analysis using ArcGIS, QGIS, and Python. For your Koya DEM project, I can deliver: Accurate contour maps at specified intervals Clean, labeled outputs in your preferred formats (ArcGIS layers, GeoPDF, PNG) Optional terrain derivatives like slope, aspect, and hillshade I ensure DEM preprocessing, topologically correct contours, and maps ready for reports or analysis. Please share your desired contour intervals and output formats, and I can start immediately. Thank you for your consideration. Best regards, Dr. Nadia Zikiou