Surface Water Monitoring

Using satellites to monitor surface water resources to support national water authorities and

Surface Water Monitoring

Using satellites to monitor surface water resources

Why is it important?

Monitoring surface water can support national water authorities and river basin commissions with vital data on basin hydrology and infrastructural development projects (e.g. planning dam construction or irrigation schemes). It is also crucial knowledge for irrigation and livestock watering and monitoring water-related ecosystems.

Historic and near real time flood mapping information helps to identify and evaluate flood hazards and to better plan for how to address the challenges from extreme climatic events.

How does it work?

Satellite derived information supports the assessment and monitoring of surface water resources from watershed to national and transboundary basin level.

The Surface Water Monitoring solution focuses on the identification of water bodies and wetlands and their associated dynamics. The monitoring information is key for assessing the availability of water resources over time including their response to climatic extremes such as floods and droughts.

Monitoring surface water from space provides water authorities with the reference information needed to make informed and timely decisions.

What you get!

Updated GIS maps with hydrology related information e.g. surface water, wetlands, irrigated areas and infrastructure projects in water environments

Necessary reference information for efficient planning and steering of surface water resources for human and livestock water requirements

Effective technology for mapping and monitoring of flood conditions of large regions and for inaccessible areas

Typical customers?

River basin organizations and environmental agencies to obtain important information on the basin hydrology and for ecosystem monitoring

Water authorities who are facing increased water scarcity and therefore need to effectively manage water resources to serve domestic, industrial and ecosystems requirements

Disaster management units for their preparedness, emergency planning and damage assessments

Specifications

Worldwide coverage

Resolutions down to 30 cm

Monitoring information can be provided on a weekly basis

Data available in a ready to use format for easy incorporation into existing GIS systems and databases

All weather capacity mapping through clouds and at night with Synthetic Aperture Radar (SAR) data

Price list

Prices starting from 0.1€ per km2

EOatDHI part of the DHI GROUP

gras@dhigroup.com
+45 4516 9100

Agern Alle 5,
2970 Hørsholm,
Denmark

CVR: 36466871

November 14, 2018February 1, 2019

Urban Mapping

Locating impervious surfaces for better management of water runoff to prevent flooding, erosion . . . . . .

Urban Mapping

Locating impervious surfaces for better management of water runoff to prevent flooding, erosion and water pollution

Why is it important?

Urbanisation and growing commercial and residential development has substantially increased the proportion of impervious areas. Unlike areas with natural water percolation, impervious surface areas do not allow runoff to seep into the ground.

These impervious surface areas therefore have a large impact on storm water runoff – an impact which will be even further exacerbated in the future, where more extreme rainfall events are expected due to ongoing climatic changes.

In order to mitigate the potential threats from extreme weather events and promote sustainable urban planning, decision-makers and practitioners will need to know where all the excess water goes.

Spatially explicit information about the amount, location and type of impervious surfaces helps to evaluate how storm water runoff will be affected by future climatic changes as well as urban development.

How does it work?

The maps depict spatial explicit information about the amount, extent, location and type of impervious surface using advanced image analysis of satellite imagery or aerial photos.

With this approach an overview of the survey area can be given at a specific point in time and can differentiate between various types of impervious surface roads (e.g. roads, rooftops, parking lots) and pervious areas (e.g. parks, lakes, streams).

Our highly automated impervious surface solution is designed to provide professionals with the ideal reference information for hydrological modelling and urban planning.

What you get!

Updated and detailed maps of impervious surface areas in several thematic classes

Consistent and objective mapping, easily facilitating future updated maps

Delivery of the input satellite image in GIS format

Typical customers?

Urban planners use the maps to locate areas that may benefit from urban green planning or water infrastructure investments

Hydrological modelers use maps of impervious surface areas as key input for modelling of urban storm water runoff

Public decisionmakers use the maps to monitor the overall green status of the urban areas

Specifications

The thematic maps cover classes such as impervious areas, roads, buildings, vegetation and water

Data is ready for use in hydrological modelling software or Geographic Information Systems (GIS)

Mapping can be done based on existing aerial photos or on satellite imagery down to 30 cm spatial resolution

For river basin mapping, it is possible to perform the mapping at smaller map scales, using medium resolution satellite images

Price list

Prices starting at 75 EUR/sqkm

The price of Impervious Surface Mapping varies and relates to factors such as size of the area, input data types and availability of ancillary data

EOatDHI part of the DHI GROUP

gras@dhigroup.com
+45 4516 9100

Agern Alle 5,
2970 Hørsholm,
Denmark

CVR: 36466871

November 14, 2018February 1, 2019

Training and Capacity Development

Providing customized training sessions to strengthen Earth Observation (EO) capabilities to help make use

Training & Capacity Development

Providing customized trainings to strengthen Earth Observation capabilities

Why is it important?

In recent years the amount of satellite data available has increased rapidly. With our customized trainings we can help you to make use of this vast amount of information to make sense in your daily work.

Geospatial information is the underpinning infrastructure for a wide range of applications, including environmental protection, urban planning and water management. Knowing how to handle geographic information will support you in effective decision-making.

How does it work?

Our customized trainings from 1-day seminars to multiple week courses helps you to strengthen your skills in using satellite information in your project work. The modular way of arranging the training, with theoretical blocks and hands-on sessions, allow us to design highly flexible and customized workshops, for your specific needs.

We are promoting open-source solutions which makes it easy for you to continue the work with satellite data after the training without worrying about licensing costs.

A long record of experience has been built up since 2000 in Africa, Asia, Europe and Latin America, where we have given trainings in all aspects of Earth observation as well as geographical information in general.

What you get!

Customised training sessions targeting knowledge gaps within your staff

Hands-on training allowing you to solve your problems better with satellite information

Theoretical knowledge on image analysis and interpretation

Typical customers?

Capacity building and technical assistance for forest monitoring and illegal logging in Latin America

Theoretical introduction to GIS analyses hands-on sessions for assessments of renewable resources in Vietnam

Training courses in the usage of QGIS for integrated water basin management at river basin authorities and water departments in Africa

Specifications

Curriculum could contain: theory in remote sensing, satellite data handling and processing, mapping and reporting, GIS basics/advanced training

All kinds of optical and microwave satellite data, e.g. Sentinels, Landsat, MODIS etc.

Open source tools such as QGIS, SNAP, python, R

Geospatial information Management

Price list

EOatDHI part of the DHI GROUP

gras@dhigroup.com
+45 4516 9100

Agern Alle 5,
2970 Hørsholm,
Denmark

CVR: 36466871

November 13, 2018February 1, 2019

Software Development

Easy access and visualization of data is as important as the actual analysis . . . .

Software Development

Custom-made applications for data processing and web portals

Why is it important?

Handling and performing analysis of large quantities of Earth Observation data is a demanding and time-consuming task, that often requires specialized software and skills. Our software solutions embed our knowledge and experience.

Easy access to and visualization of data is as important as the actual analysis and processing of the data itself. We build modern and intuitive web apps that fit your needs, whether it’s an internal tool for your analysts to query data, or a simple and elegant app for visualizing results.

The solution is based on tried and true analysis methods or modern AI and machine learning, and our analysts and software developers work together to transform it into an algorithm which can be deployed operationally. Automating the entire pipeline, from acquisition to analysis and visualization. Online platforms allow interactive exploration of the extracted information and provide increased level of stakeholder engagement. Online. Online access also allows the information to be continuously updated in real time as data is collected and analyzed from around the globe.

How does it work?

Our software solutions allow you to exploit the knowledge and experience within custom-made toolboxes and online applications.

We implement advanced methods for data processing and analysis and turn them into easy-to-use applications that will allow you to extract high value information from large quantities of Earth Observation data.

This can be in the form of open-source toolboxes for QGIS, stand-alone applications or online applications tailored specifically to your use. With our strong scientific background, we rely on both physically-based and machine-learning models.

What you get!

Custom built software and toolboxes that allow you to efficiently extract information from large quantities of geospatial data

Online applications allowing interactive exploration of information products instead of traditional maps or reports

The knowledge and experience of DHI GRAS packaged into your own software solution – either on your desktop or in the cloud

Typical customers?

National agencies responsible for environmental reporting use our toolboxes to extract environmental parameters from satellite data in real time

A renewable energy company wanting to follow the trend in adoption of rooftop solar cells or a city wanting to build an app for its residents showing availability of parking spaces

Interactive web map applications are used by mining and dredging companies to limit and document their impact on the environment

Specifications

We often extend the functionality of existing software, such as QGIS, by developing plugins or toolboxes

We mainly work in Python on high performance infrastructure including cloud environments, HPC clusters and specialized software that runs on GPUs

Our web solutions are often built based on material design principles powered by both open source components as well as custom built engines like our own TerraCotta raster tile server

Price list

Software toolboxes and online applications should be tailored for your specific use. We develop solutions from very simple web viewers to large applications for big data analysis on cloud environments.

Contact us for further details

EOatDHI part of the DHI GROUP

gras@dhigroup.com
+45 4516 9100

Agern Alle 5,
2970 Hørsholm,
Denmark

CVR: 36466871

November 13, 2018February 1, 2019

Land Cover

Land cover mapping represent perhaps the most common and useful application of satellite . . . .

Land Cover

A graphical representation of the land surface

Why is it important?

Land cover mapping represent perhaps the most common and useful applications of satellite remote sensing.

Land cover mapping is used within a wide range of applications including natural resource management, urban planning, hydrological modeling and exploration of oil, gas, and minerals.

The access to historical data makes it possible to detect land cover and land cover changes back in time, and the continued supply of new image data allows monitoring and detection of changes in land cover in the observed period of time. Up-to-date land cover maps and change detection maps are often used in environmental impact assessments.

How does it work?

A satellite image contains information that can readily be analyzed and interpreted visually.

Nevertheless, it is in some cases necessary to convert the satellite image to a thematic map of different land cover or land use types.

This will make it possible to work quantitatively with the characteristics of the area to analyse and understand the land cover and surface better.

A land cover representation allows to perform calculations on i.e. the area of each class or analyze distances to roads or settlements. Comparing historical assessments of land cover with recent land cover allows for investigating landscape changes.

Land cover and land cover change maps are often used as inputs to hydrological models or for environmental impact assessments.

What you get!

An up-to-date graphical representation of the surface

A systematic assessment of land cover with custom tailored classes

Various resolution and accuracies are possible depending on needs

Typical customers?

Hydrologists use land cover as input to regional hydrological models, soil erosion models or flood models

Environmental managers use land cover as background for other thematic layers (e.g. administrative units, location of towns, environmental sensitive areas etc.) as part of Environmental Impact Assessments

Agronomists/forest managers use landcover to understand and update agricultural statistics on i.e. crop types, fallow periods, deforestation, and forest regrowth

Specifications

The basic principle behind land cover mapping is the ability to distinguish different surface covers based on their spectral signatures

Typical land cover classes we map are: vegetation, built-up area, water bodies, agricultural areas and forest areas

The actual classes to be mapped depends on the usage of the land cover maps

Our approach is to customize the land cover maps with regards to budget, actual classes and detail level

Price list

Typically land cover maps are produced in 10-30 m resolution with approximately 10 different classes, but can be produced in much finer details down to 30 cm resolution

The cost for land cover maps typically starts at a few thousand euros, but actual price depends on detail level and actual land cover classes

EOatDHI part of the DHI GROUP

gras@dhigroup.com
+45 4516 9100

Agern Alle 5,
2970 Hørsholm,
Denmark

CVR: 36466871

November 13, 2018February 1, 2019

Suspended Sediment

Monitoring sediment load and distribution during dredging and material handling in aquatic environments . . .

Suspended Sediment

Monitoring and mapping sediment distribution from space

Why is it important?

Monitoring sediment load and distribution during dredging and material handling in aquatic environments is important for infrastructure companies and environmental authorities to ensure that the health of these coastal systems is not disturbed.

By utilizing the opportunities that satellites provide, it is possible to optimize the timing of field campaigns so that any and all seasonal variations are included in the sampling based on historical data, and at the same time get more accurate and cost-efficient information than traditional monitoring techniques. This reduces the risk of dredging bans and limits damage from dredging.

How does it work?

Sediment detection from satellite information reduces the risk and damage of dredging while providing more accurate and cost-efficient information than traditional monitoring techniques.

Many infrastructure companies and environmental authorities face difficult circumstances when undertaking coastal constructions, dredging activities and general management of coastal activities.

Traditional monitoring methods include costly field based approaches with associated risks for both personnel and equipment.

We can provide you with a web-based solution that provides information on the spatial distribution, in near real-time, which optimizes construction and production activities and reduces costs.

What you get!

A quick and cost-efficient way of monitoring suspended sediment in your coastal area

A baseline to establish the spatial extent of sediment distribution and load

A tool to separate the effect of marine construction from natural occurrences

Typical customers?

Coastal managers use it for identification of potential sedimentation problems, for environmental impact assessments, and for monitoring conditions during coastal constructions

Coastal construction companies use it to document the environmental impact, for optimal site identification and to identify baseline conditions

Dredging companies use it to estimate sediment movements. To document environmental impact of activities and to calibrate sediment movement models

Specifications

This type of information can be delivered in near real time for regional studies (250 m – 1200 m resolution) and within a few days for detailed studies (0.6 m – 30 m resolution)

Historical analysis possible based on archived satellite data to establish baselines

Cost-effective compared to traditional monitoring methods (in-situ collection, buoy measurements etc.)

Provides information on spatial variation – not just a point measurement

Data available in a ready to use format – easy incorporation into existing GIS systems and databases

Price list

EOatDHI part of the DHI GROUP

gras@dhigroup.com
+45 4516 9100

Agern Alle 5,
2970 Hørsholm,
Denmark

CVR: 36466871

November 13, 2018April 4, 2019

Coastline Mapping

Mapping and monitoring coastal dynamics from space based on historical and recent satellite imagery to

Coastline Mapping

Mapping and monitoring coastal dynamics from space

Why is it important?

Based on historical and recent satellite imagery we can extract information about coastal dynamics, providing estimations of coastline changes (meters/year) caused by factors such as sand erosion/deposition, infrastructure developments.

Satellite data dates back to the 1960’s and provides a detailed level of information about changes in shoreline around the world. This type of analysis provides valuable information about erosion and deposition of sand and sediments, development of vegetation cover in the coastal zone and information on coastal structures and coastal protection.

How does it work?

Satellite data dates back to the 1960’s and provides a detailed level of information about changes in shoreline around the world. This type of analysis provides vulnerable information about erosion and deposition of sand and sediments, development of vegetation cover in the coastal zone and information on coastal structures and coastal protection.

What you get!

Extracted coastlines from different years or seasons provided as ready to use in any GIS or coastal modeling software

Digital maps of the entire coastal zone providing information about vegetation, sediment, coastal protection, constructions etc.

Imagery from different years with an optimized geocode allowing you to evaluate your area of interest. Images can be added into your webGIS or desktop GIS

Typical customers?

Coastal construction companies use it to document the environmental impact, for optimal site identification and to identify baseline conditions

Coastal managers use it for coastal planning and identification of areas affected by erosion or deposition, for environmental impact assessment and monitoring

Coastal zone planners and managers benefit from continuous shoreline monitoring in order to assess the coastal dynamics in near real time on frequent basis

Specifications

Coastlines are delivered in ready-to-use vector data format

Analysis of coastline changes (erosion/deposition) can be reported by meters/year or area based (m2)

The coastlines can be derived down to a map scale of 1:1.000 and comes with flexible options accommodating varying budgets and specifications

Historical coastlines can be extracted all the way back to the 1960’s

Price list

The price for mapping of coastline dynamics depends on frequency and availability of imagery, the length of coastline, and the level of detail

EOatDHI part of the DHI GROUP

gras@dhigroup.com
+45 4516 9100

Agern Alle 5,
2970 Hørsholm,
Denmark

CVR: 36466871

November 13, 2018February 1, 2019

Digital Elevation Model

Detailed terrain heights with Earth Observation (EO) data enabling you to understand terrain . . . .

Digital Elevation Model

Detailed terrain heights with Earth Observation data

Why is it important?

A DEM enables you to understand all aspects of the terrain and is an essential input in many geospatial analyses such as topography mapping, hydrological modelling, airspace planning, infrastructure site planning’s and environmental change applications.

An elevation model derived from satellites will overcome challenges related to the insufficient detail level in public available DEM’s such as SRTM, as well as being a more cost-efficient alternative to LiDAR and land surveyor based DEM’s.

How does it work?

A Digital Elevation Model (DEM) is a digital representation of the earth’s terrain heights.

We provide DEM’s created from stereoscopic satellite imagery, which is a highly cost-efficient alternative to traditional land and aerial based surveying approaches. A DEM can be used to derive topographic contours and compute elevation slope, aspect and other topography characteristics used in many geospatial analyseis.

A DEM can be delivered as both a digital surface model (DSM) which includes surface features such as vegetation and man-made structures, as well as a bare-earth representation without above ground objects (DTM) – both options ranging from 50 cm to 30 m in spatial resolution

What you get!

Updated and tailormade Digital Elevation Model (DTM/DSM), delivered in any ready-to-use GIS format

Possible additional data layers such as contour lines, hydrological enhancements, satellite imagery

Our independent and qualified advice on selecting the right solution suited to your project requirements

Typical customers?

Hydrological modelers work with DEM’s for flood modelling

Aerial operators (e.g. UAV and airplane pilots) need accurate terrain heights to safely plan their flight

Wind resource modelers need accurate terrain heights to estimate onshore wind resources

Specifications

Delivery time: Some products are ready to go, others need a bit more processing time

To further enhance the accuracies of the DEM, a few ground control points (GCP) is very often beneficial

We will assist with experience and guidance

Price list

Typical pricing:

1m DEM: 60-90 EUR/sqkm

4m DEM: 30-50 EUR/sqkm

Minimum order size: 100 sqkm

EOatDHI part of the DHI GROUP

gras@dhigroup.com
+45 4516 9100

Agern Alle 5,
2970 Hørsholm,
Denmark

CVR: 36466871

November 13, 2018May 6, 2019

Coastline Mapping

Mapping coastline and coastal zone development and dynamics based on historic and recent satellite data. . . .

Coastline Mapping

Mapping coastline and coastal zone dynamics based on historic and recent satellite data

Why is this important?

Coastal zone managers and port authorities have an advantage when they have access to information about the changes and trends in their coastal area.

Coastline mapping is a solution that uses satellite images and historical archives dating back to the 1960s with the option to combine with existing aerial photographs.

The highlights:

Archives dating back to the 1960’s and recent satellite data provides coastlines that are delivered in ready-to-use vector data format

The coastlines can be derived down to a map scale of 1:1.000, with spatial details of 0.5m to 30m, and comes with flexible options accommodating varying budgets and specifications

Digital maps of the entire coastal zone can be produced with embedded information such as vegetation, sediment, coastal protection, constructions etc.

In more detail..

DHI GRAS has profound experience in mapping coastal erosion and stability classification and with our expertise in this field we can tailor a solution that works for you.

Based on historical satellite data dating back to the 1960’s we can assess and quantify erosion/accretion changes over time. Methods used for extracting coastlines are typically semi-automatic object-based segmentation depending on the nature of the coast and the details needed in the final products.

Further classification of the coastal zone can be derived based on the timeseries of satellite data to extract information about dynamics and development of vegetation, coastal protection, constructions etc.

Tidal information can be considered by adding corrections based on DHI tidal models.

EOatDHI part of the DHI GROUP

gras@dhigroup.com
+45 4516 9100

Agern Alle 5,
2970 Hørsholm,
Denmark

CVR: 36466871

November 13, 2018May 16, 2019

Flood and drought monitoring and prediction

Nonitoring the right data and information is crucial for governments in flood and drought situations.

Flood and drought monitoring and prediction

Providing reliable data streams and applying complex analyses on a wide range of remote sensing and climate data

Why is this important?

Flood and drought monitoring provides access to the right data and information for governments and local authorities. This enables them to mitigate potential disasters.

Project highlights:

Reliable near-real-time remote sensing data and climate forecasts for flood and drought management on country and river basin scale

Automated data streams from a wide range of online sources for satellite-based rainfall, temperature, soil moisture, NDVI, water levels, chlorophyll, evapotranspiration, and more

Statistics and complex indices based on latest science that support in-depth analysis of severity of flooding and drought events

In more detail..

Increased floods in some areas and droughts in others, is having a substantial impact on the ecosystem and agriculture of the affected region and harming the local economy, often hitting developing countries the hardest.

The Flood and Drought project is working on a groundbreaking online system containing an array of data such as hydrographic, meteorological and demographic information in near-real time piloted by 10 water authorities across six countries and three transboundary river basins. This is a packaged solution providing not only data and information but also tools to integrate this information into the users planning.

The online portal allows for the users to locate and identify hazards, estimating impacts and providing risk assessment. It also includes a water indicator tool and water safety planning to support decision making as well as an application to understand crop yields.

To make the information accessible to stakeholders, we maintain data streams from more than 20 different online sources of remote sensing and climate data.

We compute statistics and complex indices based on latest science for enhanced assessment of flood or drought severity, available on country or river basin scale.

The software is developed as part of the Flood and Drought Management Tools project funded by the Global Environment Facility (GEF) together with the United Nations Environment Programme (UNEP) and the International Water Association (IWA).

gras@dhigroup.com
+45 4516 9100

Agern Alle 5,
2970 Hørsholm,
Denmark

CVR: 36466871

Surface Water Monitoring

Using satellites to monitor surface water resources

Why is it important?

How does it work?

What you get!

Typical customers?

Specifications

Price list

Urban Mapping

Locating impervious surfaces for better management of water runoff to prevent flooding, erosion and water pollution

Why is it important?

How does it work?

What you get!

Typical customers?

Specifications

Price list

Training & Capacity Development

Providing customized trainings to strengthen Earth Observation capabilities

Why is it important?

How does it work?

What you get!

Typical customers?

Specifications

Price list

Software Development

Custom-made applications for data processing and web portals

Why is it important?

How does it work?

What you get!

Typical customers?

Specifications

Price list

Land Cover

A graphical representation of the land surface

Why is it important?

How does it work?

What you get!

Typical customers?

Specifications

Price list

Suspended Sediment

Monitoring and mapping sediment distribution from space

Why is it important?

How does it work?

What you get!

Typical customers?

Specifications

Price list

Coastline Mapping

Mapping and monitoring coastal dynamics from space

Why is it important?

How does it work?

What you get!

Typical customers?

Specifications

Price list

Digital Elevation Model

Detailed terrain heights with Earth Observation data

Why is it important?

How does it work?

What you get!

Typical customers?

Specifications

Price list

Coastline Mapping

Mapping coastline and coastal zone dynamics based on historic and recent satellite data

Why is this important?

The highlights:

In more detail..

Flood and drought monitoring and prediction

Providing reliable data streams and applying complex analyses on a wide range of remote sensing and climate data

Why is this important?

Project highlights:

In more detail..

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