{"id":1790,"date":"2020-05-26T10:27:29","date_gmt":"2020-05-26T13:27:29","guid":{"rendered":"https:\/\/wp.ufpel.edu.br\/hidrologiaemodelagemhidrologica\/?page_id=1790"},"modified":"2020-05-26T11:12:11","modified_gmt":"2020-05-26T14:12:11","slug":"arclash-2","status":"publish","type":"page","link":"https:\/\/wp.ufpel.edu.br\/hidrologiaemodelagemhidrologica\/arclash-2\/","title":{"rendered":"ArcLASH"},"content":{"rendered":"
    \n
  1. Where was <\/b>ArcLASH <\/i><\/b>developed?<\/b><\/span><\/li>\n<\/ol>\n

    The software named <\/span>ArcLASH <\/span><\/i>was developed by postgraduate students and professors from Federal University of Pelotas and Federal University of Lavras, who are members of the Research Group on Hydrology and Hydrological Modeling in Watersheds.<\/span><\/span><\/p>\n

      \n
    1. <\/b> Programming language<\/b><\/span><\/li>\n<\/ol>\n

      This software was developed as a script to be used in ArcGIS. <\/span>ArcLASH <\/span><\/i>was fully implemented in the Python programming language by making use of the <\/span>arcpy <\/span><\/i>library, which consists of a set of geoprocessing procedures intended for applications in ArcGIS.<\/span><\/span><\/p>\n

        \n
      1. Minimum computer configurations<\/b><\/span><\/li>\n<\/ol>\n

        We <\/span>recommend systems that meet or exceed the following specifications in order to use <\/span>ArcLASH<\/span><\/i>: 2.2 GHz processor and 2 GB RAM memory. In addition, users also need a licence of ArcGIS 10.1 or higher and the <\/span>Spatial Analyst <\/span><\/i>extension.<\/span><\/span><\/p>\n

          \n
        1. Scope<\/b><\/span><\/li>\n<\/ol>\n

          The hydrological model referred to as <\/span>Lavras Simulation of Hydrology (LASH)<\/span><\/i> was developed by researchers of the Engineering Department from Federal University of Lavras in conjunction with a researcher from the National Soil Erosion Research Laboratory (NSERL\/USDA) – Purdue University, USA (Viola 2008; Beskow 2009). LASH is a long-term, distributed, semi-conceptual and deterministic hydrological model intended for representation of some hydrological processes, whose information are difficult to be acquired in ungauged watersheds, such as evapotranspiration, interception, capillary rise, soil water storage, direct surface runoff, subsurface runoff and baseflow. This hydrologic model has been successfully applied to Brazilian watersheds (Mello et al., 2008; Beskow et al., 2011a; Beskow et al., 2011b; Viola et al., 2012a, Viola et al., 2012b; Beskow et al., 2013; Viola et al., 2014a; Viola et al., 2014b). The version of <\/span>LASH <\/span><\/i>used for the above-mentioned studies fulfilled functions strictly associated with research, however, it is appropriate for users other than the developers and members of the Research Group. Also, <\/span>LASH <\/span><\/i>is not protected by copyright.<\/span><\/span><\/p>\n

          In order to increase the <\/span>LASH <\/span><\/i>applicability, its second version has been developed thanks to research projects conducted by the Research Group in which several alterations and enhancements have been incorporated into <\/span>LASH<\/span><\/i>. In this context, one of the alterations refers to the development of <\/span>ArcLASH <\/span><\/i>which is a module structured in the ArcGIS environment to support and automate the processing of spatial data bases required by <\/span>LASH<\/span><\/i>.<\/span><\/span><\/p>\n

          The objective of <\/span>ArcLASH<\/span><\/i> is to automate all the preparation of geographical databases (maps) required by <\/span>LASH<\/span><\/i>, thereby minimizing the chances of users inputting erroneous information in the databases needed for hydrological simulation and making it easier the database compilation. <\/span>ArcLASH<\/span><\/i> was then developed to execute a logical sequence of geoprocessing and hydrology operations seeking to reduce such errors.\u00a0<\/span><\/span><\/p>\n

            \n
          1. <\/b>ArcLASH <\/i><\/b>interface and input<\/b><\/span><\/li>\n<\/ol>\n

            Once <\/span>ArcLASH <\/span><\/i>is installed, it can be accessed within ArcGIS by using its \u201cArcToolBox\u201d, as illustrated in Figure 1.<\/span><\/span><\/p>\n

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

            Figure 1 \u2013 Exemplification of how users can access <\/span>ArcLASH <\/span><\/i>in ArcGIS.<\/span><\/span><\/p>\n

            ArcLASH<\/span><\/i> enables users to input maps representing regions, which might differ in size and coordinate system. The software executes all the necessary procedures to process the maps within the same region of interest and with the same coordinate system. Please, see below an illustrative example for each map that is required by <\/span>ArcLASH<\/span><\/i> taking into account a watershed situated in the region of Pelotas, Rio Grande do Sul State.<\/span><\/span><\/p>\n

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

            Figure 2 \u2013 Importation of the digital elevation model (DEM) of a region and the outlet of interest into <\/span>ArcLASH. <\/span><\/i>In this example, the outlet refers to Cordeiro de Farias bridge, in Pelotas\/Rio Grande do Sul State.<\/span><\/span><\/p>\n

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

            Figure 3 \u2013 Importation of a soil map covering Rio Grande do Sul State into <\/span>ArcLASH<\/span><\/i>, as well as choice of a field from the attribute table to identify the soil classes.<\/span><\/span><\/p>\n

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

            Figure 4 \u2013 Importation of a land-use map covering a large area of Rio Grande do Sul State into <\/span>ArcLASH<\/span><\/i>, as well as selection of a field from the attribute table to identify the land-use classes.<\/span><\/span><\/p>\n

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

            Figure 5 \u2013 Importation of a map containing the rain gauges that will be considered for hydrological modeling with LASH.<\/span><\/p>\n

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

            Figure 6 \u2013 Importation of a map containing the meteorological stations that will be considered for hydrological modeling with <\/span>LASH<\/span><\/i>.<\/span><\/span><\/p>\n

            For additional information on input, procedures and output, users are encouraged to read the <\/span>ArcLASH <\/span><\/i>tutorial, which is stored in the same folder where <\/span>ArcLASH<\/span><\/i> is installed.<\/span><\/span><\/p>\n

              \n
            1. Results generated by ArcLASH<\/i><\/span><\/strong><\/li>\n<\/ol>\n

              \u00a0\u00a0\u00a0\u00a0\u00a0<\/b>ArcLASH<\/span><\/i> executes various geoprocessing and hydrology operations, thus resulting in maps and tables that are stored in two folders automatically created by the software in a path defined by the user.<\/span><\/span><\/p>\n

              6.1) Raster maps in ASCII format<\/span><\/em><\/p>\n

              Please, see below the maps in ASCII format generated by <\/span>ArcLASH<\/span><\/i>.Please, see below an illustrative example for each map in ASCII format that is generated by <\/span>ArcLASH<\/span><\/i> based on a watershed situated in the region of Pelotas, Rio Grande do Sul State:<\/span><\/span><\/p>\n

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

              Figure 7 \u2013 Hydrologically consistent digital elevation model derived from processing in <\/span>ArcLASH<\/span><\/i> for the Pelotas river watershed upstream from Cordeiro de Farias bridge (Pelotas-RS), as well as the corresponding ASCII format file.<\/span><\/span><\/p>\n

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

              Figure 8 \u2013 Slope map derived from the processing in <\/span>ArcLASH<\/span><\/i> for Pelotas river watershed upstream from Cordeiro de Farias bridge (Pelotas-RS), as well as the corresponding ASCII format file.<\/span><\/span><\/p>\n

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

              Figure 9 \u2013 Flow direction map derived from the processing in <\/span>ArcLASH<\/span><\/i> for the Pelotas river watershed upstream from Cordeiro de Farias bridge (Pelotas-RS), as well as the corresponding ASCII format file.<\/span><\/span><\/p>\n

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

              Figure 10 \u2013 Flow accumulation map derived from the processing in <\/span>ArcLASH<\/span><\/i> for the Pelotas river watershed upstream from Cordeiro de Farias bridge (Pelotas-RS), as well as the corresponding ASCII format file.<\/span><\/span><\/p>\n

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

              Figure 11 \u2013 Drainage network map numerically derived from the processing in <\/span>ArcLASH<\/span><\/i> for the Pelotas river watershed upstream from Cordeiro de Farias bridge (Pelotas-RS), as well as the corresponding ASCII format file.<\/span><\/span><\/p>\n

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

              Figure 12 \u2013 Map of subwatersheds derived from the processing in <\/span>ArcLASH<\/span><\/i> for the Pelotas river watershed upstream from Cordeiro de Farias bridge (Pelotas-RS), as well as the corresponding ASCII format file.<\/span><\/span><\/p>\n

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

              Figure 13 \u2013 Map of soil classes derived from the processing in <\/span>ArcLASH<\/span><\/i> for the Pelotas river watershed upstream from Cordeiro de Farias bridge (Pelotas-RS), as well as the corresponding ASCII format file.<\/span><\/span><\/p>\n

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

              Figure 14 \u2013 Map of land-use classes derived from the processing in <\/span>ArcLASH<\/span><\/i> for the Pelotas river watershed upstream from Cordeiro de Farias bridge (Pelotas-RS), as well as the corresponding ASCII format file.<\/span><\/span><\/p>\n

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

              Figure 15 \u2013 Map illustrating the influence area of each rain gauge derived from the processing in ArcLASH<\/i> for the Pelotas river watershed upstream from Cordeiro de Farias bridge (Pelotas-RS), as well as the corresponding ASCII format file.<\/span><\/span><\/p>\n

              6.2) Tables<\/span><\/em><\/p>\n

              ArcLASH<\/span><\/i> also generates 3 important text files to execute the LASH model, which are related to the outlet, rain gauges and meteorological stations. These files are imported into LASH and then associated with temporal databases. By way of illustration, Figure 16 depicts a text file related to rain gauges.<\/span><\/span><\/p>\n

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

              Figure 16 \u2013 Text file generated by <\/span>ArcLASH<\/span><\/i> detailing information on the rain gauges that will be linked to the database in LASH.<\/span><\/span><\/p>\n

              7.<\/span> Bibliographic References<\/span><\/strong><\/p>\n

              BESKOW, S. <\/span>LASH Model: a hydrological simulation tool in GIS framework<\/b>. 2009. 118 f. Tese (Doutorado em Engenharia Agr\u00edcola) \u2013 Universidade Federal de Lavras, Lavras, 2009.<\/span><\/span><\/p>\n

              BESKOW, S. Mello, c. r. de; NORTON, L. D. Development, sensivity and uncertainty analysis of LASH model. <\/span>Scientia Agricola<\/b>, v. 68, n. 3, p. 265-274, 2011.<\/span><\/span><\/p>\n

              BESKOW, S.; mello, c. r. de; NORTON, L. D.; SILVA, A. M. Performance of a distributed semi-conceptual hydrological model under tropical watershed conditions. <\/span>Catena<\/b>, v. 86, p. 160-171, 2011b.<\/span><\/span><\/p>\n

              BESKOW, S.; NORTON, L. D.; MELLO, C. R. de. Hydrological prediction in a tropical watershed dominated by Oxisols using a distributed hydrological model. <\/span>Water Resources Management<\/b>, v. 27, p. 341-363, 2013.<\/span><\/span><\/p>\n

              Mello C. R.; Viola, M. R.; Norton, L. D.; Silva, A. M.; Weimar, F. A. Development and application of a simple hydrologic model simulation for a Brazilian headwater basin. <\/span>Catena<\/b>, v. 75, n. 3, p. 235-247, 2008.<\/span><\/span><\/p>\n

              VIOLA, M. R. <\/span>Simula\u00e7\u00e3o hidrol\u00f3gica na regi\u00e3o do alto rio Grande a montante do reservat\u00f3rio de Camargos\/CEMIG<\/b>. 2008. 120 f. Disserta\u00e7\u00e3o (Mestrado em Engenharia Agr\u00edcola) \u2013 Universidade Federal de Lavras, Lavras, 2008.<\/span><\/span><\/p>\n

              VIOLA, M. R. <\/span>Simula\u00e7\u00e3o hidrol\u00f3gica na cabeceira da bacia hidrogr\u00e1fica do rio Grande de cen\u00e1rios de usos do solo e mudan\u00e7as clim\u00e1ticas A1B<\/b>. 2011. 286 p. Tese (Doutorado em Recursos H\u00eddricos em Sistemas Agr\u00edcola) \u2013 Universidade Federal de Lavras, Lavras, 2011.<\/span><\/span><\/p>\n

              VIOLA, M. R.; MELLO, C. R. de; GIONGO, M.; BESKOW, S.; SANTOS, A. F. dos. Modelagem hidrol\u00f3gica em uma sub-bacia hidrogr\u00e1fica do baixo rio Araguaial, TO. <\/span>Journal of Biotechnology and Biodiversity<\/b>, v. 3, n. 3, p. 38-47, 2012.<\/span><\/span><\/p>\n

              VIOLA, M. R.; MELLO, C. R. de; BESKOW, S.; NORTON, L. D. Applicability of the LASH Model for hydrological simulation of the Grand River Basin, Brazil. <\/span>Journal of Hydrologic Engineering<\/b>, v. 18, n. 12<\/span>, <\/b>p. 1639-1652, 2013.<\/span><\/span><\/p>\n

              VIOLA, M. R.; MELLO, C. R. de; BESKOW, S.; NORTON, L. D. Impacts of land-use changes on the hydrology of the Grande river basin headwaters, Southeastern, Brazil. <\/span>Water Resources Management<\/b>, v. 28, p. 4537-4550, 2014a.<\/span><\/span><\/p>\n

              \u00a0<\/span>VIOLA, M. R.; MELLO, C. R. de; CHOU, S. C.; YANAGI, S. N.; GOMES, J. L. Assessing climate change impacts on Upper Grande River basin hydrology, Southeast Brazil. <\/span>International Journal of Climatology<\/b>, 2014b.<\/span><\/span><\/p>\n","protected":false},"excerpt":{"rendered":"

              Where was ArcLASH developed? The software named ArcLASH was developed by postgraduate students and professors from Federal University of Pelotas and Federal University of Lavras, who are members of the Research Group on Hydrology and Hydrological Modeling in Watersheds. Programming language This software was developed as a script to be used in ArcGIS. ArcLASH was […]<\/p>\n","protected":false},"author":570,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"jetpack_post_was_ever_published":false,"footnotes":""},"class_list":["post-1790","page","type-page","status-publish","hentry"],"jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/P6ZlNg-sS","jetpack-related-posts":[],"_links":{"self":[{"href":"https:\/\/wp.ufpel.edu.br\/hidrologiaemodelagemhidrologica\/wp-json\/wp\/v2\/pages\/1790","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/wp.ufpel.edu.br\/hidrologiaemodelagemhidrologica\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/wp.ufpel.edu.br\/hidrologiaemodelagemhidrologica\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/wp.ufpel.edu.br\/hidrologiaemodelagemhidrologica\/wp-json\/wp\/v2\/users\/570"}],"replies":[{"embeddable":true,"href":"https:\/\/wp.ufpel.edu.br\/hidrologiaemodelagemhidrologica\/wp-json\/wp\/v2\/comments?post=1790"}],"version-history":[{"count":5,"href":"https:\/\/wp.ufpel.edu.br\/hidrologiaemodelagemhidrologica\/wp-json\/wp\/v2\/pages\/1790\/revisions"}],"predecessor-version":[{"id":1809,"href":"https:\/\/wp.ufpel.edu.br\/hidrologiaemodelagemhidrologica\/wp-json\/wp\/v2\/pages\/1790\/revisions\/1809"}],"wp:attachment":[{"href":"https:\/\/wp.ufpel.edu.br\/hidrologiaemodelagemhidrologica\/wp-json\/wp\/v2\/media?parent=1790"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}