ArcMap Environment Research Articles

Special Tools for Structural and Hydrographic Analysis of River Systems in the ArcMap Environment

Special Tools for Structural and Hydrographic Analysis of River Systems in the ArcMap Environment

Analysis of the effect of landscape component classification on landscape diversity index

The landscape diversity index (LDI) is an important level in biodiversity conservation, and its scale dependence has an important role in regional landscape planning and biological conservation. The aim of this study is to analyze in depth the effects of spatial scale changes in the classification of different landscape components on LDI and to explore the thresholds of LDI. The classification of landscape components was accomplished in the ArcMap environment using fusion and merging tools, and the LDI thresholds and scale changes were quantitatively assessed by LDI values. The results show that there are differences in LDI values for different classifications, and the threshold for LDI without considering scale changes can be interpreted as: 0.4215 ≤ LDI ≤ 1.9754. The grain sizes suitable for landscape diversity analysis are 160m and 1280 m, and the effective amplitude range of the I, II and III land type is 9~31 km, while the effective amplitude of three land use types is 20∼31 km, relatively lagging behind. However, when considering amplitude changes, the LDI threshold can be interpreted as 0.3027 ≤ LDI ≤ 2.0947, which is suitable for large-scale regional landscape diversity studies when the grain size is large. In conclusion, the essence of landscape diversity change with scale is caused by changes in the number and area of landscape components, and the threshold analysis should not only take into account the grain size and amplitude, but also consider the landscape background of the study area.

Using Graphs for Network Analysis in ArcMap Environment

The emergence of powerful and fast computer technologies has led to the massive adoption of GIS in various fields. Modern GIS make it possible to quickly solve such problems in the mathematical analysis of network data. This work aims to limit the use of GIS modules in this area. The relevance of the article is the use of graphs to develop network analysis in the ArcMap environment.

REMOTE IDENTIFICATION OF MICROSEDIMENTAL RELIEF FORMS AND SOIL SECTIONS OF AGROLANDSCAPES OF THE FORESTS OF UKRAINE WITH SIGNS OF HYDROMORPHISM

Background. Agricultural lands play a key role in ensuring the food security of the population and the development of the country's economy. However, excessive wetting poses a significant threat to these lands, as a result of which the conditions for the formation of soils with signs of glaciation and low fertility are formed within the lower relief elements, which significantly reduces their potential. In order to highlight the problems of geospatial identification of micro-recessed landforms (MRLF) on agricultural lands, the article uses spectral indices based on the data of RSE. Methods. 6 spectral indices were selected for the research. They were used to obtain data on areas of soil subsidence on arable lands, namely: NDWI, NWI, NDMI, NDVI, OSAVI, WRI. Solving research tasks involved the use of data from the Sentinel-2A satellite system. In order to visualize the spread of MRLF on the research territory, a high-resolution image (0.2 m per 1 pixel) obtained in the "Digitals Professional 5.0" software was used. Processing and geospatial visualization of the RSE data were performed in the Arc Map environment of the Arc GIS 10.8 program using the raster calculator tool. Results. Within the reference fields, the dynamics of the values of water and vegetation indices were constructed and analyzed, and the identification ability for the geospatial separation of soil areas with signs of hydromorphism was evaluated. It is shown that the identification capacity of the indices depends not only on the level of soil moisture, but also on the biomass of vegetation (scales of crop damage), which is indicated by the high information capacity of the traditional vegetation index NDVI. The most informative index ranges were established: for NDVI, the range is from -0.117 to -0.024 with an identification percentage of 98.0 %; for OSAVI – 78.0 % with a range of 0.255–0.313; for NDMI with a range variation of -0.041 to -0.149 and an identification percentage of 56.0. Сonclusions. The results of remote identification of the areas of the MRLF enabled to obtain information about the moisture content of the soils of the arable lands of the research area. The ability of the specified indices during the geospatial identification of microrecessed landforms (MRLF) and soil areas within them with signs of hydromorphism was evaluated. It is demonstrated that the use of orthophotos with a resolution of 0.2 m per 1 pixel serves as important supporting aids of successful completion of the specified tasks. It was found that the identification ability of water indices on test fields without existing vegetation is too low. On the other hand, the shielding of the soil surface by vegetation with areas of damaged crops makes it possible to isolate MRLF. The obtained information can be used during the development of the methodology of soil science surveying and planning of largescale soil survey activities

Determination of Ömerli Groundwater Potential using GIS Based Analytical Hierarchy Process (AHP) approach

Water, which is an indispensable element of human life, is a basic need for other living things and nature. Groundwater, which is the world's freshwater resource, has low cost usage opportunities because it is generally of good quality and does not need to be treated. Accordingly, in recent years, there has been an excessive increase in the use of groundwater due to the low rainfall and limited surface waters. Therefore, it has become important to know the hydraulic properties of the aquifer in the evaluation techniques of groundwater resources. It is important that the methods used in the evaluation are suitable for the structure of the aquifer in order to obtain healthy results. In support of these explanations, the AHP technique, one of the GIS supported MCDM methods, was used in order to reveal the underground water potential of the Mardin province Omerli district basin. Raster maps were first created in the GIS program ArcGis ArcMap environment, and then reclassified maps were produced. These data regarding the press study were obtained from official institutions and private drilling companies dealing with groundwater. In the first stage of the study, data related to groundwater potential such as static water level, dynamic water level, well yield, depth and residual were modeled. In the second stage, these data are weighted in AHP and then the result map; It was created and interpreted with very bad, bad, moderate, good and very good values. In the third and last stage, the results and recommendations are discussed.

Romanya’da tarım sektörü ve arazi mülkiyet durumu (1990-2020).

Romanya 13,8 milyon hektar tarım arazisiyle Avrupa Birliği Ülkelerinin toplam tarım alanın % 7,2’sine sahiptir. Ülkede yaşanan siyasi rejim değişikleri ve Avrupa Birliği üyeliği, arazi mülkiyetinde yapısal değişime sebep oldu. 1990 sonrasında büyük çiftlik arazilerinin halka dağıtılması sonucu tarlalar küçük parsellere bölündü. Romanya’nın AB’ye katılım sürecinde ve 2007’de gerçekleşen tam üyelik sonrasında yapılan yasal düzenlemeler, çok uluslu şirketlerin kiralama ve satın almalar yoluyla büyük arazilere sahip olmalarını sağladı. 1990 ile 2020 yılları arasını kapsayan bu çalışmada, Romanya’daki arazi mülkiyetinin devlet, bireysel üretici ve tüzel kişiliğe sahip işletmeler şeklinde yıllara göre değişimi ortaya konulmaktadır. Mısır, buğday ve ayçiçeğinin ekim alanı, üretim miktarı ve verimliliğin yıllara göre değişimi, örnek teşkil etmesi adına tablolar şeklinde gösterilmektedir. AB ülkelerinde kullanılan NUTS sınıflandırması ile Romanya 8 bölgeye ayrılarak incelenmiştir. Kaynak olarak, FAOSTAT ve Romanya Ulusal İstatistik Ajansı esas alınmıştır. Arazi kullanımı verileri CORINE tarafından sağlanmış ve ARCMap ortamında oluşturulmuştur.

Bozova Groundwater Quality Modeling And Evaluation Using Fuzzy Ahp Method Based On Gıs Technique

One of the most important elements of economic growth and sustainable development in ecological balance is water. However, today, water, unlike the important natural resources of all periods, is in a state of international crisis; population is increasing on the other hand, water resources are decreasing and our planet is experiencing an increasingly dry period. People have already begun to feel the concern that they will not find water in the future and to take their precautions. In addition to the ever-increasing need for water in our country, the control and prevention of groundwater pollution are also gaining importance. In this study, samples taken from well waters consumed as drinking, irrigation and utility water in Bozova basin were analyzed according to the criteria specified in the Regulation on Water Intended for Human Consumption. It is aimed to establish a model for the groundwater quality of the site and to identify areas with high water quality. Water samples from 16 separate wells were obtained for this, and the results were then assessed using the F-AHP approach, one of the GIS supported MCDM methods. Groundwater quality maps were first classified by raster and then by reclassify in the Arc map environment. Afterwards, a groundwater pollution map was created by weighting the parameters in the F-AHP application. Finally, these parameters were interpreted and suggestions were made.

ArcFem: New Software Module in ArcGIS for Numerical Modeling

The numerical modeling of physical phenomena has become for many users a necessity. It allows both a better understanding of the studied system and a better link with the purpose and policy makers. We discuss mathematical models, which attempts to represent the physical phenomenon of groundwater flow by mathematical expressions using different software to facilitate the design models. Coupled with GIS software model has become possible, through a database synthesized to introduce geographic data such as boundary conditions, wells, recharge areas, who see themselves as the fuel of the model, but the role of this software is limited to a part in the preparation of data for use in software hydrogeological modeling and secondly, in view of the results obtained by them, hence the need for a customized GIS application. The user of GIS in the field of hydraulic modeling groundwater is brought to the exercise of his profession to reproduce a large number of both transactions; similar processing where it needs personalized treatments. The automation of these processing in the ArcMap environment using Java ArcObjetcs and has led to significant time savings and ease in handling input data and output results.

Assessment and modeling of sewer network development utilizing Arc GIS and SewerGEMS in Kabul city of Afghanistan

The absence of a wastewater collection, management, and disposal scheme is one of Kabul’s most serious environmental issues. This has resulted in both health and ecological problems. This research used Arc GIS and SewerGEMS tools to assess the viability of a decentralized sewerage collection model in the research area. The research area was chosen as the city’s 5th district. Land-use and land-cover, Digital Elevation Model (DEM), and Satellite data were used to construct the network’s geometry in the Arc map environment. SewerGEMS software was used to perform hydraulic simulation and modeling. The variables were regulated based on the results of the study using conventional wastewater topology guidelines. Based on the outputs of hydraulic analysis, it is concluded that the decentralized wastewater collection system would be the best option for the area. It can be deduced from hydraulic design findings that the hydraulic model was successfully developed and built. The methodology can be applied for the development of future wastewater master plans of the city.

Quantitative Analysis of Geomorphologic Characteristics for Surface Runoff Determination in Amala River Catchment in Kenya

Hydrological response of a catchment is a function of rainfall as influenced by catchment characteristics comprising geomorphology, land cover, and management practices. In this study, the analysis mainly focused on how geomorphological characteristics influence the catchment hydrological response. Geomorphological analyses of catchment geometry, stream patterns, relief, and slope can be used to characterize the catchment features that affect the drainage network. These characteristics are catchment specific and therefore unique to provide an insight into its hydrologic response. The objective of this research was to quantitatively analyze geomorphologic characteristics; linear, areal, drainage pattern, and relief aspect, of Amala River catchment, using ArcGIS tools and infer its hydrological behavior. The morphometry of the catchment was derived from the DEM within the ArcMap environment. These parameters as well as mathematical map equations were used to derive geomorphological characteristics such as bifurcation ratio, rho coefficient, drainage density, infiltration number, form factor among others. The results show that the Amala River catchment is elongated with uniform lithology and a higher probability of delayed peak hydrographs due to longer lag time and time of concentration. The catchment exhibits a dendritic drainage pattern with an average bifurcation ratio of 4.26 which is closer to the upper bound value of 5. This indicates a reduction in peak flows and a delayed time to peak. The surface runoff yield efficiency was low and non-uniform with an average drainage density of 1.073 km/km2. The catchment was characterized by higher infiltration characteristics as compared to surface flows, this varied spatially, with sub-basins far North of the outlet having high infiltration than those near the outlet. The catchment relief was characterized as steep and therefore high stream velocity was inferred. The investigation and findings of this study on catchment geomorphology and inferred hydrologic behavior will be of great importance in catchment management, water resource planning within the catchment, and water harvesting at a spatial scale. Thus, the outcomes provide a baseline for informed water pan and water harvesting structures site.

Assessment of the groundwater suitability for irrigation near Al Kufa City and preparing the final water quality maps using spatial distribution tools

In many parts of the world, groundwater quality is decreasing due to urbanization industrialization and use of agricultures in rural areas. This subject has formed an urgent need to determine the suitability of groundwater for various purposes. The aim of this study is to determine a groundwater index for groundwater use for irrigation in agriculture. The study is carried out in an agricultural area; near Al Kufa city, North of Al Najaf province, Iraq. Many chemical variables are used in this model, including (total dissolved solids TDS, electrical conductivity EC, sodium Na, potassium K and iron Fe), in addition to some of the heavy metals (cadmium Cd, lead Pb, chromium Cr, and nickel Ni), that also added to the index. The weight’s parameters are determined using analytical hierarchy process (AHP) and classified into five groups based on the human health significance of these parameters and negative effect on agriculture. The result of this study indicates that the water quality index (WQI) records values between (0 and 4.33), and in which the value of (2.16) represents the limit between unpolluted and polluted groundwater. This study confirms that all groundwater samples over the study area are suitable for agriculture. The final WQI values are exported to ArcMap environment to prepare the final WQI maps of study area.

GIS-Based Analysis of the Locations of Filling Stations in La-Nkwantanang Madina Municipal Assembly Against Ghana’s Planning Standards

The degree of noncompliance of filling stations locations with regards to the planning standards is worrying. This paper uses Geographic Information System (GIS) to analyse the locations of filling stations in La-Nkwantanang Madina Municipal Assembly(LANMMA) against the planning standards set by Ghana Town and Country Planning Department. Primary and secondary data sources were used including Global Positioning System (GPS) to capture co-ordinates of some key features. All the analyses were performed in ArcMap environment of ArcGIS10.4 using spatial statistic (Nearest Neighbour Statistic), spatial analyst and proximity (Buffering) tools. The finding of the study revealed that 37 filling stations are located along major roads in the study area with a cluster pattern of distribution. About 92% of the filling stations complied to the 15m standard distance from buildings while all the filling stations are in compliance to the 10m standard distance between neighbour filling stations. The study recommends that the regulatory bodies should be proactive in the discharge of their duties and ensure total compliance to all the regulations. Keywords: GIS, Filling Stations, Location, Planning Standards and LANMMA. DOI : 10.7176/DCS/10-1-06 Publication date: January 31 st 2020

Transport accessibility and mobility: a forecast of changes in the face of planned development of the network of expressways and motorways in Poland

The article presents a forecast of changes in the level of transport accessibility and mobility in Poland as a result of the anticipated development of the network of expressways and motorways. The progress which has been made in this respect in the last few years in Poland is unquestionable and unrepeatable by any other European country. Will the subsequent investment plans concerning the road network of the highest parameters offer equally impressive results as far as the increase in Poland’s territorial cohesion is concerned? The aim of this article is to establish in what way the planned infrastructure investments will affect the changes in transport accessibility and mobility as well as whether they will result in the changes in traffic flows directed to Warsaw and other regional centres. To achieve this, an analysis of the present and target state of the road network in Poland was conducted from the perspective of changes in accessibility, anticipated traffic flows, and mobility. For this purpose the authors used the analyses of isochrone and accumulative accessibility in ArcMap environment and research into traffic flows and their changes in the Visum software. The conducted research showed that the planned transport network might result in induced traffic through a increase in accessibility (the central variant) with the assumption that an increase in mobility would be vented in the real face of the phenomenon of motility. The fact of opening new road sections of expressways will contribute to substantial changes in the directions of traffic flows only to a slight extent, and the only transformations concern regions with already developed fast car transport infrastructure whose functionality is limited due to the lack of its cohesion in the subsequent course or lack of a developed network of expressways and motorways.

The use of anamorphosis cartographic models for geodata analysis

The subject of the research is the method of constructing areal, linear and volumetric anamorphoses cartographic models for the analysis of geodata. The object of the research is the process of creating various types of anamorphoses cartographic models. The aim of the work is to improve the quality of geodata perception in cartographic models based on a new approach to their visualization, provided by an unusual representation of the geodata structure while taking into account a large number of parameters that they contain. Conclusions: Methods for constructing areal, linear and volume anamorphoses cartographic models have been developed, a mathematical model and an algorithm for creating anamorphoses cartographic models using the ArcGIS software package have been obtained. The methodology for constructing areal anamorphoses cartographic models, in particular, provides, through the use of the Cartogram module, the possibility of implementing anamorphoses cartographic models of demographic position in Ukraine based on data on the population size in the ArcMap package ArcGIS. At the same time, it is also possible to obtain volumetric anamorphoses cartographic models of the demographic state. In addition, based on an analysis of the activities of Wizz Air (as an example of modern lowcost air carriers), a methodology has been developed for constructing linear anamorphoses cartographic flight models performed by this company from Ukraine in the ArcMap environment. At the same time, the mandatory components of such cartographic models are specially implemented relational geodatabases containing comprehensive flight characteristics. The technique is universal and can be used for any airline and geolocation flights. The proposed methods for constructing anamorphic cartographic models allow obtaining their various types, due to specific visualization providing an opportunity to look at the geodata under study from different sides and gain new knowledge on nearby natural and technogenic phenomena. It is anamorphoses cartographic models that provide a unique opportunity to visually present non-obvious facts with the possibility of illuminating hidden natural and geographical patterns, analyzing the relationships between environmental phenomena against the background of their defining characteristics.

Development of Quality Control Tools for ARCMAP using Python

Topological error free data in the database is very essential for Geographic Information System (GIS) analysis. To minimize some of the most common GIS errors, five Quality Assessment/Quality Control tools has indigenously discussed in this paper, namely Auto registration tool, Dangles correction tool, Irrelevant points removal Tool, Delete polygon less than 4 vertices and Connect and Split using the programming language Python. Tools are developed for ArcMap environment for more effective data cleaning and validation. ArcMap is one of the main components in Architecture Geographical Information system (ArcGIS) suite. These tools will be helpful to identify the possible errors in a particular sheet and will navigate user to the error positions. These tools not only finds the errors they also provides several solutions to solve those errors in automatic or semi-automatic mode, hence making the data best suited for use in GIS. This paper describes the brief details of all the 5 developed tools, and also demonstrates the benefits of applying these tools.

Multispectral and Radar Data for the Setting of Gold Mineralization in the South Eastern Desert, Egypt

Satellite-based multi-sensor data coupled with field and microscopic investigations are used to unravel the setting and controls of gold mineralization in the Wadi Beitan–Wadi Rahaba area in the South Eastern Desert of Egypt. The satellite-based multispectral and Synthetic Aperture Radar (SAR) data promoted a vibrant litho-tectonic understanding and abetted in assessing the regional structural control of the scattered gold occurrences in the study area. The herein detailed approach includes band rationing, principal component and independent component analyses, directional filtering, and automated and semi-automated lineament extraction techniques to Landsat 8- Operational Land Imager (OLI), Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER), Phased Array L-band Synthetic Aperture Radar (PALSAR), and Sentinel-1B data. Results of optical and SAR data processed as grayscale raster images of band ratios, Relative Absorption Band Depth (RBD), and (mafic–carbonate–hydrous) mineralogical indices are used to extract the representative pixels (regions of interest). The extracted pixels are then converted to vector shape files and are finally imported into the ArcMap environment. Similarly, manually and automatically extracted lineaments are merged with the band ratios and mineralogical indices vector layers. The data fusion approach used herein reveals no particular spatial association between gold occurrences and certain lithological units, but shows a preferential distribution of gold–quartz veins in zones of chlorite–epidote alteration overlapping with high-density intersections of lineaments. Structural features including en-echelon arrays of quartz veins and intense recrystallization and sub-grain development textures are consistent with vein formation and gold deposition syn-kinematic with the host shear zones. The mineralized, central-shear quartz veins, and the associated strong stretching lineation affirm vein formation amid stress build-up and stress relaxation of an enduring oblique convergence (assigned as Najd-related sinistral transpression; ~640–610 Ma). As the main outcome of this research, we present a priority map with zones defined as high potential targets for undiscovered gold resources.

Managing Filling Stations Spatial Database Using an Innovative GIS Tool – Case Study Afipko City in Nigeria

With the Nigeria economy and her citizens over reliance on crude oil and its refined products, the use of petrol, diesel and kerosene in fuelling of generators and automobiles or for domestic cooking becomes very essential. Hence, constant visit to filling stations is necessary at one time or the other. This has in turn enthused the siting of so many filling stations and one is forced to wonder if they all complied with the standards required for their establishment. The question of where to buy fuel and which filling station is sited short of the regulatory standards can be appropriately answered using Geographic Information System (GIS). This study focuses on analysing the location of filling stations within Afikpo, in Ebonyi State Nigeria against the laws/regulations guiding their establishment. The coordinates of the filling stations were acquired with a handheld Global Positioning System (GPS) receiver and plotted on a georeferenced map in ArcMap environment of ArcGIS 10.2 software. All the analyses were performed in the ArcMap environment using spatial analyst, spatial statistics and proximity tools available in the software. The findings revealed that the filling stations are spatially distributed in a dispersed pattern. The results of the analysis reveals that 44.4% of the filling stations did not meet the criteria of 15 meters minimum distance from the pump to the edge of the road. 22.2% of the filling stations were sited too close (lesser than 100 meters) to a health care centre. 66.7 % % did not meet the criteria of 400 meter minimum distance to other stations when located on the same road side (with no road separation). This database created on filling stations provides a platform to help policy makers (regulatory agencies) in planning, management and effective monitoring/supervision. It is there recommended that the regulatory bodies should be proactive in the discharge of their duties.

Forest fire vulnerability map using remote sensing data, GIS and AHP analysis (Case study: Zarivar Lake surrounding area)

Fire has an important role in destruction and negative side effects on forest ecosystem. The main aim of this study was to determine the main factors influencing the fire on set in Zarivar Lake forest area using remote sensing data, Geographic Information System (GIS) and Analytical Hierarchy Process (AHP) analysis. Vegetation density map derived from SPOT-HRG image data with 71.38% accuracy and 0.695 Kappa coefficients. The results of AHP analysis on destructive fire factors indicated that temperature and human-made factors had maximum influence on fire occurrence in the study area. Based on AHP analysis, final vulnerability map of study area was produced in Arc Map environment with 5 vulnerability areas. The results indicated that 78.03% of burned areas in 2009 and 2010 occurred in very high, high and moderate vulnerability area of final fire vulnerability map. So, this map can be used in forest management of Zarivar Lake area in dry season.

An Alternative Choice in Heighting

Comparison of orthometric heights obtained from the combination of GPS/Levelling survey method with that obtained from Lidar, Srtm, and Astergdem data is an area of research which is of great interest to Geomaticians. This area of research makes possible the discovery of other suitable methods of determining orthometric height which can be selected for use depending on the region, extent and nature of the terrain where the project is to be executed.<p style="-qt-block-indent: 0; text-indent: 0px; margin: 0px;">The X, Y, Z coordinates and the geoidal heights for all the existing controls within university of Lagos were determined using the GPS/ Levelling survey method, the required orthometric height (H) was then obtained as the differences between ellipsoidal and geoidal heights. Extracting orthometric heights for the X and Y coordinates of observed control points overlaid on each of Lidar, Srtm and Astergdem required the use of spatial analysis tool in an arc map environment. From the profile plot (Figure 3.5) of all the orthometric heights, the heights relationship was easy established. From the descriptive statistics test (Table 3.4), the one way ANOVAs test at 1% and 5% level of significance (Table 3.8), the number of points in other methods whose orthometric height is closed to that of Levelling/GPS method (Table 3.7) and correlation test on the various orthometric heights obtained (Table 3.5) it is obvious that all the applied methods operates at different spatial resolutions, of all the four methods, GPS/Levelling method was the most reliable and most accurate method followed by lidar method, then by astergdem method and Srtm has the least. In a nutshell, Orthometric heights generated by method of Lidar are very close to that generated by GPS/Levelling method at several stations, thus method of Lidar was considered as the most suitable alternative to GPS/Levelling method, whenever the use of later method cannot be easily accomplished.</p><p style="-qt-block-indent: 0; text-indent: 0px; margin: 0px;"> </p>

Groundwater Protection Using DRASTIC Vulnerability Maps and ArcFem Tools for Perimeter Protection: A Case Study in the Charf El Akab Aquifer (Morocco North)

The Charf El Akab aquifer has a surface area of 17 km2 and is located about 20 km southwest of the Tangier city, it circulates in the Miocene sandy basin of the same name and comprises two layers, one high and the other low, these two are separated in some places by an airtight impenetrable sand-marly formation. The requirements for water whether potable or industrial, in the Tangier-Asilah region are expected to amplify in order to support the increasing demand prompted by the economical development, population growth as well as the heightened threat of scarcity related to climate change. Currently, the water supply of this region is ensured mostly by the two dams: Ibn Battouta and “April 9, 1947”. However, this aquifer plays the role of an easily usable emergency reservoir, in case of an extra water supply in rush hour or in the event where current service works of the cities of Tangier and Asilah are unavailable. Nevertheless, water resources are still vulnerable because of the existence of abandoned quarries in the area. Therefore, the protection of this aquifer against any source of pollution is the purpose of this work. The lower water layer is the only one that can be exploited by the ONEE (National Office for Electricity and Drinking Water), due to the fact that it has a better quality and very good hydrodynamic characteristics. The most important thing about this work is the establishment of an intrinsic vulnerability map to the pollution by the DRASTIC method, by exploiting of the calibrated hydrodynamical model results. In the same context of protection, a guesstimate of the close protection perimeter of 72.76 ha was acquired, using a new numerical modeling approach by the “Arcfem” software under the ArcMap environment.