Morphometric Analysis and Prioritization of Sub-Watersheds in Watershed of Nashik, Maharashtra of Godavari River Basin Using Remote Sensing and GIS As a Tool
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International Journal of Innovative Technology and Exploring Engineering (IJITEE) ISSN: 2278-3075, Volume-9 Issue-4, February 2020 Morphometric Analysis and Prioritization of Sub-Watersheds in Watershed of Nashik, Maharashtra of Godavari River Basin using Remote Sensing and GIS as a Tool. Gaurav Kumar, Pratibha Warwade, Gulab Mukund, Nitish Dhaked, Shailesh Suman Abstract: Hydrological analysis and for the integrated I. INTRODUCTION development of the watershed, it is essential to do geomorphometric analysis. A comprehensive study of drainage A naturally occurring hydrological unit which is generally pattern, topography, and most essential erosion status can be defined by its natural boundaries and designated by similar analyzed through morphometric analysis. Prioritization of climatic, physical and topographic conditions is known as a sub-watersheds according to the capacity of the water table of watershed. It is an area from which runoff from precipitation Nashik district watershed was evaluated by linear, aerial and relief flows through a single outlet and ends in large rivers lakes and aspects. The morphometric analysis has been used for the prioritization of seven sub-watersheds of the Godavari river basin the ocean. It is generally classified based on its geographical in the Nashik district, Maharashtra. Using the Digital Elevation area. The Watershed Atlas, prepared by AIS LUS (1990), Model, the sub-watersheds were delineated in ArcMap 10.4 and which describes the area of the watershed as being less than also few extraction works were done in Erdas Imagine. Drains 500 km2 (±50%).The (National Remote Sensing Agency and their corresponding characteristics including stream length, (1995) has further categorized the watershed as stream order, stream frequency, circulatory ratio, texture ratio, compactness coefficient, elongation ratio, form factor, drainage sub-watershed (30–50 km2), mini-watershed (10–30 km2) density, bifurcation ratio is analyzed and their value has evaluated and micro-watershed (5–10 km2) [1]. for each sub-watershed by using the Remotely Sensed-data and Hence, the watershed is generally regarded as an ideal unit geospatial techniques. Finally based on morphometric behavior for the planning, management, and conservation of natural the priority has been given to each sub-watershed & rank has resources, i.e., land, water, forest, soil, etc. It is also used for assigned to them, the most sensitive sub-watershed is identified. the alleviation of the impact caused by natural disasters on The reveled analysis says stream order ranges from 1 to 6. The overall stream segments of all order are 1,115 in the watershed. achieving sustainable development. For the development of On the account of morphometric analysis prioritization of watershed some notable features required for its design such watershed is done. Resulting prioritization rank assigned to each physiography, geomorphology, drainage, land use/land cover, watershed based upon the evaluated compound parameter given soil and available water resources. Watershed management to them. Those Sub-watersheds having least compound parameter aims for the proper utilization of water, land, soil, forest value has assigned the highest priority. Further, sub watersheds accordingly categorized into three type i.e. high (3.4-3.8), medium resources of a watershed to meet the optimum production (4.0-4.2) and low (4.4) priority based on their maximum priority along with minimum hazard resources [2].The prioritization score (4.5) and minimum score (3.4). of sub-watershed is done based on morphometric analysis by using techniques of remote sensing and GIS. A lot of works Keywords: Geo-morphometric analysis, Prioritization, Remote has already been done on the prioritization using these sensing and GIS, Watershed techniques. Remote sensing & GIS are two of the essential tools that are widely used for the watershed management, development, and studies on prioritization of sub-watersheds. Revised Manuscript Received on February 3, 2020. For prioritization of micro-watersheds, the morphometric Gaurav Kumar*, Department of Water engineering and management, analysis could potentially be used by studying various aerial Central University of Jharkhand, Ranchi, India. and linear parameters of the watersheds even when soil maps Email: [email protected] Pratibha Warwade, Department of Water engineering and management, area unavailable [2]. GIS with remote sensing approach was Central University of Jharkhand, Ranchi, India. used in morphological analysis of sub-watersheds for Email: [email protected] Pavagada region of Tumkur district, Karnataka [3]. GIS based Gulab Mukund, Department of Water engineering and management, morphometric analysis was carried out in Hara Maja and Central University of Jharkhand, Ranchi, India. Email: [email protected] Bhagra-Phungotri watersheds of Gurdaspur district of Punjab Nitish Dhaked, Department of Water engineering and management, [1]. Both remote sensing & GIS techniques used for Central University of Jharkhand, Ranchi, India. watershed prioritization in the Guhiya basin, India [4]. Study Email: [email protected] Shailesh Suman, Department of Water engineering and management, based on morphometric analysis Central University of Jharkhand, Ranchi, India. was done for check dam Email: [email protected] positioning using (SY1) model for Published By: Retrieval Number: D1712029420/2020©BEIESP Blue Eyes Intelligence Engineering DOI: 10.35940/ijitee.D1712.029420 1553 & Sciences Publication Morphometric Analysis and Prioritization of Sub-Watersheds in Watershed of Nashik, Maharashtra of Godavari River Basin using Remote Sensing and GIS as a Tool. prioritization of micro-watersheds in Tarafeni watershed of topography whereas in eastern side land is open, fertile and Midnapur district [5]. In recent times many studies have good for agricultural activities. The average annual already been done on the priority of watersheds. precipitation of the district is 1029.6 mm. The main source of income is agriculture. Most of the agricultural lands grow II. SILENT FEATURES OF STUDY AREA grapes for the production of wine. Nashik district also is Godavari River is originating from Trimbakeshwar Range known as wine capital of India. District has three seasons within the watershed (study area) which exists in the Nashik mainly summer (April-June), monsoon (July-September) and District of Maharashtra State. Study area belongs to the winter (October-March). The rainy season occurs due the south-west monsoon (July-September). The average high rain-fed region of the country which lies between Northern 0 0 0 temperature of district is 37 C while the average low Latitude 19 35’6” to 20 10’46” and Eastern Longitude 0 73028’37” to 7407’38” while holding an area of 2615.17 km2. temperature is 10 C. The outlet of the watershed is at Nandu The almost overall area of watershed covers Nashik District. Madhyameshwar Dam. A. Slope The particular slope map portrays the digitized formulate slope from DEM data which is prepared using spatial analyst tool in ArcGIS toolbox and the slope has been taken in percentage moving from north to south in the map as shown in figure 2(c). During study we found moderate to the strong slope (10-30%) with a very gentle slope (3-9%) in the north and extremely steep (46-100%) in the south. Also, on moving from east to west in the particular map we observe very gently (3-9%) towards the east while moderate with a strong slope towards west. Termination, the range of slope varies from gentle slope (3-8%) to very gentle slope (2-9%) imitated by some flatlands. The morphometric parameters for devise watershed are calculated by the formulae given by scholars Figure 2(a): - Location Map of study area The district holds a population of about 61 lakhs (Registrar General, India 2011) in which 58.67% population is urban. The elevation of the study area varies from 529 to 1586m as shown in the figure. 2(b) like [6], [7] and [5]. Figure 2(c): - Slope map The slope of watershed delineates that major portion of the area and most of the landscape in the north and west parts come under lower altitudes while the southeast is characterized by higher altitude and gentle slope. The southeast land may be amenable for overspill. The following landscape flaunts a radial pattern of drainage in the northwest Figure 2(b): - Digital Elevation Model and somewhat trellised in the south-east. Slopes are classified based upon guidelines mention in “Integrated Mission for The topography of watershed is hilly in the south-western Sustainable Development” part while most of the part varies from nearly plain to moderate slope. The western part of the district is hilly and has intersections with ravines while the eastern part is plane in topography as shown in figure 2(b). Only a simple kind of agriculture is possible in the western part due to its hilly Published By: Retrieval Number: D1712029420/2020©BEIESP Blue Eyes Intelligence Engineering DOI: 10.35940/ijitee.D1712.029420 1554 & Sciences Publication International Journal of Innovative Technology and Exploring Engineering (IJITEE) ISSN: 2278-3075, Volume-9 Issue-4, February 2020 SLOPE (%) CLASSIFICATION prepared using Maximum Livelihood Classification 0-2 Level to Nearly level Techniques in ArcGIS as shown in figure 2(e). 3-9 Very gentle to gentle 10-30 Moderate to strong 31-45 Strong to very strong 46-100 Extreme to steep >100 Very steep Table 1: Slope classification B. Soil map Soil map conceived by