{"id":2177,"date":"2023-08-08T00:31:24","date_gmt":"2023-08-07T19:01:24","guid":{"rendered":"http:\/\/sites.iitgn.ac.in\/digitalstudies\/?page_id=2177"},"modified":"2024-07-11T02:52:43","modified_gmt":"2024-07-10T21:22:43","slug":"tanaya","status":"publish","type":"page","link":"http:\/\/sites.iitgn.ac.in\/digitalstudies\/tanaya\/","title":{"rendered":"Tanaya"},"content":{"rendered":"

Watershed Delineation in Surat (Gujarat) Using\u00a0QGIS<\/strong><\/p>\n

Why Watershed Delineation of a region is important?<\/strong><\/p>\n

The management of a watershed depends on having an accurate delineation of the watershed’s\u00a0boundaries. This is an extremely vital responsibility. The borders that have been set serve as the\u00a0nucleus around which various aspects of management, such as land use, land change, soil types,\u00a0geology, and river flows, are analysed and appropriate conclusions are reached.<\/p>\n

How to do Watershed Delineation in Gujarat?<\/strong><\/p>\n

QGIS water demarcation maps for Gujarat require these steps:
\n1. Get water demarcation data from satellite photos or government data. QGIS can import\u00a0data.<\/p>\n

\"\"<\/a>
\n2. Get a Surat shapefile: A shapefile contains the shape of the region you want to map.\u00a0Surat shapefiles are available from Natural Earth and the Gujarat state government\u00a0website.\u00a0https:\/\/dataspace.mobi\/dataset\/surat-zone-boundary\/resource\/34d16cf2-9671-4bd1-82
\nc2-9d38ad3a4612<\/p>\n

3. Both datasets: Add water delineation and shapefile layers to QGIS. https:\/\/dataspace.mobi\/dataset\/waste-water-drainage.<\/p>\n

4. Surat’s water boundary: The “Clip” tool cuts the water demarcation layer to the Surat\u00a0shapefile.<\/p>\n

\"\"<\/a><\/p>\n

5. Water demarcation layer raster: QGIS’ “Rasterize” tool can rasterize the clipped water\u00a0demarcation layer. This creates a raster layer containing water body cells.<\/p>\n

\"\"<\/a>
\n6. Use the QGIS Hydrology toolbox to evaluate water flow, drainage basins, and other\u00a0characteristics. Use tools to extract streams, rivers, and lakes from the raster layer.<\/p>\n

\"\"<\/a><\/p>\n

7. Customise water bodies: After extracting the required characteristics, style them differently from the other layers in your map. Map water bodies with colours, patterns,\u00a0or symbols.<\/p>\n

8. Customise the map: You can change the map projection, colour scheme, and labels after\u00a0creating it.<\/p>\n

9. Map export: Finally, export the map as an image or PDF for usage.<\/p>\n

Why to use QGIS software for mapping watershed delineation of a region:<\/strong><\/p>\n

Geotechnical engineers use QGIS software for mapping watershed delineation because QGIS is a\u00a0powerful open-source Geographic Information System (GIS) software that can help in analysing\u00a0and visualising spatial data, including hydrological data like river networks and watersheds,\u00a0geotechnical engineers may use the QGIS tool for watershed delineation for a specific region.\u00a0This is due to the fact that QGIS is able to assist in the delineation of watersheds.<\/p>\n

The act of determining and mapping the borders of a watershed, which can be thought of as a\u00a0region of land that is drained by a certain stream or river, is referred to as watershed\u00a0delineation. The geotechnical engineers who use QGIS have access to a number of tools and\u00a0plugins that can assist them in analysing and modelling the hydrological features of a particular\u00a0location. These characteristics include elevation, slope, aspect, and precipitation data.<\/p>\n

\"\"<\/a><\/p>\n

Digital Elevation Models (DEMs) can be generated from satellite or LiDAR data by geotechnical\u00a0engineers using QGIS. These DEMs are then used to determine drainage patterns and to split\u00a0the area into watersheds. The software is also able to calculate hydrological characteristics, which are extremely important for the management and planning of watersheds and include\u00a0flow direction, flow accumulation, and stream network topology.<\/p>\n

In general, QGIS is a useful tool for geotechnical engineers who are involved in watershed\u00a0delineation and other types of hydrological studies because it provides a wide range of tools for\u00a0data analysis, visualisation, and modelling. These tools can assist geotechnical engineers in\u00a0making informed decisions and recommendations that are founded on reliable scientific data.<\/p>\n

Motivation for the Project<\/strong><\/p>\n

Management of Water Resources<\/strong>: Watershed maps give useful information on the water\u00a0resources that are accessible in a specific area. This information includes the location and extent\u00a0of water bodies such as rivers, lakes, and reservoirs. Watershed maps can also be used to\u00a0regulate water quality. This information is absolutely necessary for the efficient administration\u00a0and planning of water resources.<\/p>\n

Management of Floods<\/strong>: Accurate watershed maps can be helpful in identifying regions that are at\u00a0risk of flooding during significant rainfall events. This enables authorities to take preventative\u00a0actions such as erecting flood protection structures and developing early warning systems.<\/p>\n

Agricultural Planning<\/strong>: Agriculture is a big economic activity in the Surat district, and precise\u00a0watershed maps can assist farmers in more successfully planning their crops and irrigation\u00a0systems, based on the availability of water resources in their region. Agriculture is a major economic activity in the Surat district.<\/p>\n

Conservation of the Environment:<\/strong> Watershed maps can also help identify areas of ecological\u00a0significance, such as wetlands, forests, and wildlife habitats. This enables authorities to take\u00a0efforts to protect these areas from human invasion and development. Watershed maps can also\u00a0help identify regions of ecological significance.<\/p>\n

In general, mapping the watershed delineation of the Surat district in Gujarat is essential for a variety of reasons, including but not limited to effective water resource management, flood\u00a0management, agricultural planning, and environmental conservation.<\/p>\n

References<\/strong><\/p>\n

1. https:\/\/www.isprs.org\/proceedings\/xxxiv\/part1\/paper\/00080.pdf
\n2. https:\/\/www.google.com\/url?sa=i&url=https%3A%2F%2Flink.springer.com%2Fchapter%2F10.1007%2F978-3-030-932473_75&psig=AOvVaw3IlLyEw4Ez8ZyB0VMgY4bU&ust=1682781602871000&source=images&cd=vfe&ved=0CBMQjhxqFwoTCPiJ553wzP4CFQAAAAAdAAAAABAQ
\n3. https:\/\/www.google.com\/imgres?imgurl=https%3A%2F%2Fwww.researchgate.net%2Fprofile%2FDhaval-M-Patel%2Fpublication%2F321421987%2Ffigure%2Ffig1%2FAS%3A566714580598784%401512126693131%2FSatellite-image-of-Surat-Source-https-wwwgooglecoin-maps-place-Surat_Q320.jpg&tbnid=8RPrHv7I1icz4M&vet=12ahUKEwjk6au49sz-AhVd_3MBHUyxBvUQMygAegUIARC2AQ..i&imgrefurl=https%3A%2F%2Fwww.researchgate.net%2Ffigure%2FSatellite-image-of-Surat-Source-https-wwwgooglecoin-mapsplace-Surat_fig1_321421987&docid=tmjRbDsydcQo8M&w=320&h=320&q=Satellite%2
\n0photos%20of%20Surat&ved=2ahUKEwjk6au49sz-AhVd_3MBHUyxBvUQMygAegUIARC2AQ
\n4. https:\/\/dataspace.mobi\/dataset\/surat-zone-boundary
\n5. https:\/\/dataspace.mobi\/dataset?license_id=notspecified&tags=UDS2022
\n6. https:\/\/www.google.com\/imgres?imgurl=https%3A%2F%2Fdges.carleton.ca%2FCUOSGwiki%2Fimages%2Fthumb%2Ff%2Ff6%2FCatch1.png%2F700px-Catch1.png&tbnid=aSsJ8moBvGy3tM&vet=12ahUKEwjqrffV98z-AhV623MBHUt4CZcQMygBegUIARDDAQ..i&imgrefurl=https%3A%2F%2Fdges.carleton.ca%2FCUOSGwiki%2Findex.php%2FExpl
\noring_the_Hydrological_Tools_in_QGIS&docid=KD8OyAwcbbRGXM&w=700&h=541&q=qgis%20hydrology%20toolbox%20on%20qgis&ved=2ahUKEwjqrffV98z-AhV623MBHUt4CZcQMygBegUIARDDAQ
\n7. https:\/\/www.google.com\/url?sa=i&url=https%3A%2F%2Fgis.stackexchange.com%2Fquestions%2F226447%2Fusing-rasterize-tool-in-qgis&psig=AOvVaw1-Y_63a7tN0yjVBF3Bs-QA&ust=1682783599104000&source=images&cd=vfe&ved=0CBEQjRxqFwoTCJCE5Of4zP4CFQAAAAAdAAAAABAE<\/p>\n","protected":false},"excerpt":{"rendered":"

Watershed Delineation in Surat (Gujarat) Using\u00a0QGIS Why Watershed Delineation of a region is important? The management of a watershed depends on having an accurate delineation of the watershed’s\u00a0boundaries. This is an extremely vital responsibility. The borders that have been set serve as the\u00a0nucleus around which […]<\/p>\n","protected":false},"author":4,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-2177","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"http:\/\/sites.iitgn.ac.in\/digitalstudies\/wp-json\/wp\/v2\/pages\/2177"}],"collection":[{"href":"http:\/\/sites.iitgn.ac.in\/digitalstudies\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"http:\/\/sites.iitgn.ac.in\/digitalstudies\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"http:\/\/sites.iitgn.ac.in\/digitalstudies\/wp-json\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"http:\/\/sites.iitgn.ac.in\/digitalstudies\/wp-json\/wp\/v2\/comments?post=2177"}],"version-history":[{"count":4,"href":"http:\/\/sites.iitgn.ac.in\/digitalstudies\/wp-json\/wp\/v2\/pages\/2177\/revisions"}],"predecessor-version":[{"id":2642,"href":"http:\/\/sites.iitgn.ac.in\/digitalstudies\/wp-json\/wp\/v2\/pages\/2177\/revisions\/2642"}],"wp:attachment":[{"href":"http:\/\/sites.iitgn.ac.in\/digitalstudies\/wp-json\/wp\/v2\/media?parent=2177"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}