Geographic Information Systems (GIS) are a powerful platform to develop solutions in water resources such as the estimation of water quality, the status of groundwater and the management of water resources at the regional and local scales. Because water varies spatially and temporally throughout the water cycle, its study, using Geographic Information Systems (GIS), is particularly practical.
This course is theoretical and practical to know the different tools of the GIS and its applications to the management of water resources. No prior knowledge of GIS is required and is based on free software programs such as QGIS.
The course provides the student with a broad overview of the GIS tools for the study and evaluation of water resources. At the end of the course, the student will have the abilities to:
- Know the open source GIS software environment.
- Use specialized complements for spatial analysis.
- Represent spatial information in a thematic map.
- Perform spatial interpolations and contour lines.
- Use satellite images in hydrological studies.
- Determine watersheds and their study parameters.
The course consists of a total of 20 hours. The sessions consist of a theoretical introduction plus a practical part. The development of the theory and applications of this course is shown below grouped by session:
- Introduction to Geographic Information Systems (GIS).
- Components and functions of the SIG.
- Projections and coordinate systems.
- Types of vector and raster information.
- Introduction to QGIS.
- Familiarization with the QGIS environment.
- Generation of vector data (points, lines and polygons).
- Assignment of coordinate systems.
- Topological edition: Generation of topologically correct polygons (perfectly adjacent).
- Generation of spatial queries (Query).
- Style application of vector and raster files.
- Edition mode of vector files:
- Add / remove part
- Add / remove ring
- Reshape spatial objects
- Scroll curve
- Divide objects
- Merge objects
- Node tools
- Preparation of maps with grids, legend and scale.
- Georeferencing images in QGIS:
- Application of projection systems to a file and a project
- Georeferencing maps in jpg or .tif format
- Georeferencing satellite images
- ownload satellite images from the NASA Echo Reverb server.
- Modification of ASTER DEM images (joining, cutting and reprojecting).
- Creation and edition of vector layers for modification of rasters.
- Import delimited text as a point layer.
- Geoprocessing tools to obtain basic parameters of one:
- Manual delineation of watersheds in QGIS.
- Automatic delineation of watersheds with Saga Gis and QGIS.
- Identification of the surface flow network
- Obtaining elevation level curves
- Obtaining slope rasters, orientation rasters, hillshade rasters, relief rasters and basin scab index
- Conversion of raster file to vector.
- Obtaining properties of the raster layer:
- Determination of the histogram
- Determination of the average height, area and perimeter of the basin
- Determination of the average slope of the basin
- Obtaining properties of the vector layer:
- Basic spatial statistics of the water network
- Determination of spatial attribute calculations
- Selection tools:
- Selection by location
- Conversion, filtering and annexing of basin attributes
- Labeling of watershed elements:
- Labeling with graduated symbols
- Creation of expression for subbasin labeling
- Determination of the Normalized Difference Vegetation Index (NDVI) with raster calculator
- Modification of the NDVI raster:
- Obtaining contour lines
- Filtering of spatial data by threshold
- Simplifying contour lines
- Obtaining nodes of the contour lines
- Extraction of the elevation of the nodes
- Obtaining a simplified superficial flow network and obtaining its nodes.
- Multilevel Interpolation B-Spline of the water table in Saga Gis with wetlands interpreted from the NDVI and points of the network of simplified superficial flow.
- 3D visualization of rasters in Saga GIS.
- Modification of water table:
- Trimming of the water table to the extension of the basin
- Correction of the water table at points where the interpolation is greater than the surface elevation
- Generation of cross sections with surface elevation and water table.
- The water cycle in Andean basins.
- Obtaining centroid coordinates, maximum height and minimum height of the basin.
- Capture of coordinates of a point in different projection systems (tool: Capture coordinates).
- LocClim configuration for the choice of meteorological stations to be used.
- Obtaining precipitation data and potential evapotranspiration of the valley bottom and valley top with the LocClim 1.1 software
- Manipulation of data obtained from LocClim:
- Obtaining water surplus from precipitation data and potential evapotranspiration.
- Determination of precipitation regression lines, potential evapotranspiration and water surplus with elevation.
- Generation of precipitation rasters, potential evapotranspiration and water surplus from the elevation raster.
- Contour lines generation of main components of the water cycle.
Marycarmen Martínez M.Sc.
Environmental Engineer - Sciences and Geosciences
Miss. Martinez is an Environmental Engineer from the Popular Autonomous University of the State of Puebla (UPAEP) - Mexico with post-graduate studies in Science in Geosciences from James Cook University - Australia. Ms. Martinez has great analytical capacity to identify impacts based on GIS focused on the environment. She has extensive experience in risk and environmental impact, developing maps and models. She has participated in sustainable projects for rural communities and projects for the conservation and sustainable use of water and soil.
Here are some details of each methodology:
- Manuals and files for the exercises will be delivered.
- The course will be developed by videos on private web platform.
- There is online support for questions regarding the exercises developed in the course.
- Digital certificate available at the end of the course.
- Video of the classes will be available for 2 months.
- To receive the digital certificate you must submit the exercises after 1 month.
Cost and payment
The cost of the course is $ 160 dollars
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