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ThesisItem Open Access MORPHOMETRIC AND HYDROLOGIC ANALYSIS OF BHADAR BASIN OF GUJARAT USING REMOTE SENSING & GIS TECHNIQUES, 2801(JAU, JUNAGADH, 2019-01) KELAIYA JAINISH HIMANSHUBHAI; H. D. RankThe natural resources planning and management can be successful if it is based on the drainage basin scale. The feasible and viable techno-economic planning for the soil and water conservation requires the hydrologic response to climate and various land uses. Morphometric analysis of a drainage basin expresses fully the state of dynamic balance that has been attained due to dealings between matter and energy. Morphometric analysis based either in GIS environment or otherwise is a competent tool for geo-hydrological studies and are very useful for identifying and planning the groundwater potential zones and watershed management, including the whole gamut of natural resources connected with the watershed. It becomes necessary to understand the topography, erosion status and drainage patterns of the region. The SWAT model is the tool to assess the water balance components of the hydrological cycle like rainfall, runoff, evapotranspiration and groundwater recharge under given land use, management and climate. The runoff and groundwater recharge assessment are very useful for the water resources development and planning. This study was undertaken for the Bhadar River basin divided into 16 watersheds and total drainage area of 7330.40 km2 . Morphometric analysis, such as linear, aerial and relief aspects of the Bhadar River basin has been done with the help of remote sensing and GIS techniques. The climatic, discharge and sediment yield data were divided into calibration period (1981-2000) and validation period (2001- 2010). The climatic and discharge data, sediment data, SRTM-DEM imagery, soil maps and land use/cover classification from LISS IV imagery are used as primary inputs for SWAT model. The SWAT model was used to assess the hydrologic response of the basin after sensitivity analysis, calibration and validation. In this study SWAT model was developed for sediment yield simulation at the outlet of the basin and this model applied to the every watersheds of basin for the estimation of sediment yield. The watershed prioritization was made using the morphometric parameters and sediment yield from all watersheds. The groundwater recharge was estimated using water table fluctuation and SWAT Model and compared. Hydrologic analysis is an analysis of interrelated components, including the processes of precipitation, evaporation, transpiration, infiltration, groundwater flow, streamflow, sediment yield etc., in addition to those structures and devices that are used to manage the hydrologic system. The capabilities of remote sensing and GIS techniques are explored in this study to simulate sediment yield in the basin. The ground water recharge was also estimated using empirical equations. Precipitation measured at 37 stations over 1981−2010 is used as an input dataset to establish hydrologic analysis. 30 years of climatic and discharge data along with different remote sensing imagery and soil map were also used. The empirical model was developed and proposed to assess the groundwater recharge using the seasonal rainfall data. The performance indices like NSE and goodness of fit were used in the modeling to assess the accuracy in the predictions. The river basin is designated as 7th order basin. The 1 st order streams are mostly dominating the basin. The moderate drainage density indicates that weak subsurface material and belongs to medium texture. The study reveals that the basin has less elongated to elongated shape and associated with steep ground slopes. The ranges of Rb are high as mean Rb of the basin is 5.38, and it has been characterized by the influences of underlying structures and lithology. Relief having a value of 0.303 km indicates low gravity of water flow as well as infiltration and high runoff conditions. The watershed 5G1B15 should be treated first while 5G1B4 at last. Highest priority indicates the greater degree of erosion in the particular watershed and it becomes potential candidate for applying soil conservation measures first. The developed soil theme map shows that clay and fine soil are dominating in the Bhadar river basin. The land use/cover analysis shows that agricultural land is dominating in the basin. The sediment yield obtained from different watershed using SWAT model also gives the same highest priority to watershed 5G1B15 having highest sediment yield among all watersheds. The performance of SWAT model is satisfactory in terms of different performance indices such as NSE and goodness of fit for calibration(NSE=64.6%, R2 =0.762) and validation(NSE=68.5%, R2 =0.798). SWAT model provides a better description of water balance of the watershed. The average annual rainfall, runoff, evapotranspiration, percolation to shallow aquifer and recharge to deep aquifer in the basin are 569.3 mm, 197.19 mm, 244.6 mm, 111.64 mm and 5.58 mm respectively. The annual average runoff is 36.37% of the average annual rainfall. The average annual sediment yield during calibration and validation periods are 14.13 t/ha and 19.40 t/ha. Among the developed models, the non-linear empirical ground water recharge model as R = 1.642(P – 230.054)0.583 (with NSE=86.59%, where R and P are the seasonal groundwater recharge, mm for the seasonal rainfall amount, mm of P) was found best. Performance of SWAT, a physically based model and empirical models were compared to simulate the ground water recharge of the Bhadar river basin. The best fit empirical model performs better than and SWAT model (NSE = 74.94%, R2 =0.898).ThesisItem Open Access MORPHOMETRIC AND HYDROLOGIC ANALYSIS OF BHADAR BASIN OF GUJARAT USING REMOTE SENSING & GIS TECHNIQUES 2801(JAU, JUNAGADH, 2019-01) KELAIYA JAINISH HIMANSHUBHAI; H. D. RankThe natural resources planning and management can be successful if it is based on the drainage basin scale. The feasible and viable techno-economic planning for the soil and water conservation requires the hydrologic response to climate and various land uses. Morphometric analysis of a drainage basin expresses fully the state of dynamic balance that has been attained due to dealings between matter and energy. Morphometric analysis based either in GIS environment or otherwise is a competent tool for geo-hydrological studies and are very useful for identifying and planning the groundwater potential zones and watershed management, including the whole gamut of natural resources connected with the watershed. It becomes necessary to understand the topography, erosion status and drainage patterns of the region. The SWAT model is the tool to assess the water balance components of the hydrological cycle like rainfall, runoff, evapotranspiration and groundwater recharge under given land use, management and climate. The runoff and groundwater recharge assessment are very useful for the water resources development and planning. This study was undertaken for the Bhadar River basin divided into 16 watersheds and total drainage area of 7330.40 km2 . Morphometric analysis, such as linear, aerial and relief aspects of the Bhadar River basin has been done with the help of remote sensing and GIS techniques. The climatic, discharge and sediment yield data were divided into calibration period (1981-2000) and validation period (2001- 2010). The climatic and discharge data, sediment data, SRTM-DEM imagery, soil maps and land use/cover classification from LISS IV imagery are used as primary inputs for SWAT model. The SWAT model was used to assess the hydrologic response of the basin after sensitivity analysis, calibration and validation. In this study SWAT model was developed for sediment yield simulation at the outlet of the basin and this model applied to the every watersheds of basin for the estimation of sediment yield. The watershed prioritization was made using the morphometric parameters and sediment yield from all watersheds. The groundwater recharge was estimated using water table fluctuation and SWAT Model and compared. Hydrologic analysis is an analysis of interrelated components, including the processes of precipitation, evaporation, transpiration, infiltration, groundwater flow, streamflow, sediment yield etc., in addition to those structures and devices that are used to manage the hydrologic system. The capabilities of remote sensing and GIS techniques are explored in this study to simulate sediment yield in the basin. The ground water recharge was also estimated using empirical equations. Precipitation measured at 37 stations over 1981−2010 is used as an input dataset to establish hydrologic analysis. 30 years of climatic and discharge data along with different remote sensing imagery and soil map were also used. The empirical model was developed and proposed to assess the groundwater recharge using the seasonal rainfall data. The performance indices like NSE and goodness of fit were used in the modeling to assess the accuracy in the predictions. The river basin is designated as 7th order basin. The 1 st order streams are mostly dominating the basin. The moderate drainage density indicates that weak subsurface material and belongs to medium texture. The study reveals that the basin has less elongated to elongated shape and associated with steep ground slopes. The ranges of Rb are high as mean Rb of the basin is 5.38, and it has been characterized by the influences of underlying structures and lithology. Relief having a value of 0.303 km indicates low gravity of water flow as well as infiltration and high runoff conditions. The watershed 5G1B15 should be treated first while 5G1B4 at last. Highest priority indicates the greater degree of erosion in the particular watershed and it becomes potential candidate for applying soil conservation measures first. The developed soil theme map shows that clay and fine soil are dominating in the Bhadar river basin. The land use/cover analysis shows that agricultural land is dominating in the basin. The sediment yield obtained from different watershed using SWAT model also gives the same highest priority to watershed 5G1B15 having highest sediment yield among all watersheds. The performance of SWAT model is satisfactory in terms of different performance indices such as NSE and goodness of fit for calibration(NSE=64.6%, R2 =0.762) and validation(NSE=68.5%, R2 =0.798). SWAT model provides a better description of water balance of the watershed. The average annual rainfall, runoff, evapotranspiration, percolation to shallow aquifer and recharge to deep aquifer in the basin are 569.3 mm, 197.19 mm, 244.6 mm, 111.64 mm and 5.58 mm respectively. The annual average runoff is 36.37% of the average annual rainfall. The average annual sediment yield during calibration and validation periods are 14.13 t/ha and 19.40 t/ha. Among the developed models, the non-linear empirical ground water recharge model as R = 1.642(P – 230.054)0.583 (with NSE=86.59%, where R and P are the seasonal groundwater recharge, mm for the seasonal rainfall amount, mm of P) was found best. Performance of SWAT, a physically based model and empirical models were compared to simulate the ground water recharge of the Bhadar river basin. The best fit empirical model performs better than and SWAT model (NSE = 74.94%, R2 =0.898).ThesisItem Open Access DECISION SUPPORT SYSTEM FOR ESTIMATING REFERENCE EVAPOTRANSPIRATION WITH LIMITED METEOROLOGICAL DATA 1987(JAU,JUNAGADH, 2015-05) VYAS KHYATIBEN NARENDRAKUMAR; Dr. R. SubbaiahReference evapotranspiration (ETo) determination is a key factor for water balance and irrigation scheduling. The FAO-56 Penman-Monteith equation has been accepted universally for estimating of reference evapotranspiration (ETo). This method demands number of climatic parameters that are not always available in ungauged basin of India. The purpose of this work is to present the new empirical equation for daily, weekly and monthly estimation of ETo for study region, Junagadh (Gujarat), using limited number of readily available weather parameters and to be able to estimate ETo with a satisfactory degree of accuracy compared with Penman-Monteith estimations (FAO-56 PM). To attain these four approaches adopted. Temperature models with original coefficient were evaluated by comparing with FAG 56 PM method. If satisfactory accuracy is not attained by the models, they are evaluated with recalibrated coefficients to get accuracy of prediction at par with FAQ 56 PM. Regression based equation were developed as a function of different combination of agro meteorological variables to predict reference evapotranspiration. ANN was also used to know the principal components affecting the nonlinear ETo process.ThesisItem Open Access CROP PLANNING AND MANAGEMENT BASED ON RAINFALL AND EVAPOTIRANSPIRATION IN RAINFED AGRICULTURE 1826(JAU,JUNAGADH, 2014-03) Harpalsinh Gohil; Dr. G. R. SharmaRainfed agriculture is practiced under a wide variety of soil type, agro climate and rainfall condition ranging from 400 mm to 1600 mm per annum. Agriculture in rainfed region is characterized with risk and uncertainty. Inadequate rainfall and its uneven distribution along with frequent drought are the common features of rainfed regions. Saurashtra region falls under arid and semi - arid climate and receives rainfall through the South - West monsoon during June to September. Annual rainfall over different parts of Saurashtra region varies from 350 mm to 650 mm. Analysis of rainfall and other weather parameters helps to develop and modify the management practices for stabilizing the crop production in the rainfed ecosystem at certain level. Estimation of the magnitude and dur^fion of water deficit and surplus are vital important for planning crop and water management practices to promote crop production in dry land areas. Rainfall and other weather data are collected from Main Dry Farming Research Station, JAU, Targhadia (Rajkot), Rainfall data of 55 years (1958-2012) on weekly basis is analysed. Occurrence of rainfall at different probability levels is calculated using best fit distribution. The highest average rainfall (64.44mm) is observed during 27"' standard week and lowest (5.22nim) during 43''" standard week. The standard deviation during 29"' standard week is high (89.17mm). The coefficient of variability is obseiwed less than 150 per cent dunng 27"' standard week to 3D' standard week except 28"' standard week indicating better reliability, where as in other weeks it is observed more than 150 per cent. It is also obseiwed that MSW has 50 per cent initial probability of receiving more than 40 mm rainfall.ThesisItem Open Access STUDY ON APPLICATION OF SALINE WATER THROUGH DRIP IRRIGATION AND CATALYTIC WATER CONDITIONER IN SODIC SOILS 1811(JAU, JUNAGADH, 2013-07) Kapadia Jatin V.; Dr. N.K. GontiaThe study on application of saline water through drip irrigation and catalytic water conditioner was carried out at Agricultural Research Station (Fruit crops), Junagadh Agricultural University, Mahuva. Sodic soils were treated with different soil amendments viz. gypsum, activated effective micro-organism (AEM) and catalytic water conditioner (CWC). Soil samples were collected after irrigating field through drip irrigation at radial distance 15 cm and 30 cm from emitter and at depth of 5-10 cm, 15- 20 cm and 25-30 cm from all the treatments combinations of soil amendments. Analysis of the soil samples reveled that pH, EC, carbonate content and SAR was found minimum in treatment combination of gypsum + AEM + CWC. Cation exchange capacity shown no significant difference. pH was observed 7.93 minimum at radial distance 15 cm from the emitter in treatment gypsum + AEM + CWC and 10.00 maximum at radial distance 30 cm from the emitter in control. EC was observed 1.25 dS/m minimum at radial distance 15 cm from the emitter in treatment gypsum + AEM + CWC and 2.79 dS/m maximum at radial distance 30 cm from the emitter in control. CO3 % was observed 13.17 % minimum at radial distance 15 cm from the emitter in treatment gypsum + AEM + CWC and 15.74 % maximum at radial distance 30 cm fi-om the emitter in control. Though CEC of the soil had decreased in treatment gypsum + AEM + CWC as compared to control, it hadn't shown any significant difference. SAR was observed 12.62 minimum at radial distance 15 cm from the emitter in treatment gypsum + AEM + CWC and 15.18 maximum at radial distance 30 cm from the emitter in control. Evaluation of CWC was also performed. It revealed that there was no significant difference in physio chemical properties of treated and non-treated CWC water. The cost analysis of the system including drip irrigation system, soil amendments and CWC was found to be ? 32748 per ha.ThesisItem Open Access HYDRAULIC PERFORMANCE EVALUATION OF MINI SPRINKLER SYSTEM 1807(2013-10) Dhaval K. Dwivedi; Dr. N.K. GontiaIrrigation system performance assessment is of high priority in irrigation research to solve the problem of irrigation development & management. It is obvious that many irrigation systems are performing below their capacity. This situation may lead to non-uniform and unreliable water distribution. The performance assessment alone is not sufficient to evaluate an irrigation system, so to present a true image, a cost estimation of the system is also done, which includes both capital investment & working cost. The mini sprinkler systems recently introduced for irrigation needs to be evaluated for their performance. A mini sprinkler system was evaluated for its hydraulic performance. Experiment was conducted to evaluate the hydraulic performance using a mini sprinkler system having 'double nozzle - full circle sprinkler at various sprinkler spacings (8m x 8m, 10m x 10m and 12m x 12m) at three operating pressures (1.0, 1.5 and 2.0 kg/cm ). The index of jet break up was obtained in all the three operating pressures in the range of 2.63 to 4.65, however ideal value of index of jet break up was obtained close to 4.0 at 1.5 kg/cm^. Uniformity coefficient for all the system arrangements was in the range of 79.14% to 87.68%. The uniformity coefficients were obtained at par for 8m x 8m spacing at 2.0 kg/cm^ and 10m x 10m spacing at 1.5 kg/cm^. Cost analysis shows that the annual cost of all the systems ranges from Rs. 13663 to Rs. 20729. The spacing of 10m x 10m at operating pressure of 1.5 kg/cm^ showed better hydraulic performance with economical feasibility.ThesisItem Open Access Conjugate Impact of irrigation regimes and system CONFIGURATIONS ON PRODUCTIVITY OF BANANA 1706(JAU,JUNAGADH, 2013-02) Ram Bhavin D.; Dr. R. SubbaiahIrrigation with 1.2 IW/ETc resulted higher yield of 86224 kg/ha but was not statistical different with irrigating with 1.0 IW/ElTc of 84507 kg/ha. More application of water could not increase the yield of banana and considered the wastage of water. So in case of banana 1.0 IW/ETc is considered ideal and economic. Earlier flowering, thicker girth, earlier harvesting time, more number of leaves, higher weight of bunch, higher yield per hectare and more number of finger have been observed in irrigating with 1.2 and 1.0 IW/ETc than 0.8 IW/ETc. System configurations significantly affected in banana crop. Irrigating around the plant yielded higher than a single point or two point application of water. Highest gross income 641539.43/ha and net income 565392/ha were found in irrigation application at 1.2 IW/ETc with star emitter system configuration. Highest benefit to cost ratio of 5.45 was obtained in star emitter configuration scheduled at 1.0 IW/Etc.ThesisItem Open Access IMPACT OF CLIMATE CHANGE ON GROUNDWATER RECHARGE IN SHETRUNJI BASIN 1696(JAU,JUNAGADH, 2012-10) Paradava Dhaval Merambhai; Dr. H. D. RankThe global warming has changed the climate worldwide. However, the nature and magnitude of the climate change vary in space and time. Its impacts also vary in space as well as time. The climate change will have different impacts in different places on rainfall amount, its intensity, frequency, rainy days, evapo-transpiration etc. These rainfall characteristics and evapo-transpiration ultimately impact on runoff and groundwater recharge also. Therefore, the location specific studies on basin scale are required to assess the impact of climate change on rainfall, runoff and groundwater recharge. The study was undertaken for Shetrunji river basin having an area of 5646.98 km^. Satellite images of IRS P6 of sensor LISS IV and Awifs digital data and GIS software namely PCI Geomatica V10.1 and ESRI ArcMap were used. The daily minimum and maximum temperature records (1973-2009) were collected from the Agricultural Research Station, JAU, Amreli. The daily rainfall data records (1961-2010) were collected from State Water Data Centre, Gandhinagar and the daily runoff data from Irrigation Department, Junagadh. The climatic data records (1965-2010) required for the estimation of daily reference evapo- transpiration was collected from the JAU Agro meteorological Observatory. The water table data records (1985-2010) before and after monsoon for the different gauge stations of the study area with aquifer properties were collected from the Central Groundwater Board, Ahmedabad. The daily maximum and minimum temperature data were used to generate the time series of monthly, seasonal and annual average of daily maximum, minimum and mean temperature. The runoff was estimated using the SCS curve number I technique for each watershed of the basin and the area weightage method was used to estimate the runoff depth for the basin. The crop water evapotranspiration from different crops was estimated by Penman-Monteinth method as per FAO-56 (Allen et aL, 1998) method. The evaporation from bare soil was estimated by Russel (1989) method. The groundwater recharge estimated by different methods like water balance, Krishna Rao (1970) and water table fluctuation were compared. The groundwater recharge depth for the entire basin was obtained by area weightage method. The trend analysis for all the time series was carried out by Mann-Kendall, Sen's slope and best fit trend line method. The significant trend in monthly average of daily maximum temperature could not be found during any month except March in a year while that of daily minimum temperature indicated increasing trend in 4 month in a year viz. February, March, May, June whereas significantly decreasing trend in November month. The monthly average of daily mean temperature indicated increasing trend in 3 month in a year viz. February, March, April while significantly decreasing trend in November month. The seasonal average of daily maximum and minimum temperature showed increasing trend during summer. The seasonal average of daily mean temperature showed significant increasing trend during monsoon and summer. The significant increasing trend in annual average of daily maximum, minimum and mean temperature was observed. The annual extreme maximum and minimum temperature showed no trend. The climate change impacts on rainfall favors to increase the rainfall significantly in 6 out of 17 watersheds while the runoff is found increasing in 5 out of 17 watersheds of the basin. The rainfall and runoff in Shetrunji basin is found increasing at the rate 45.85 and 17.7 mm per decade respectively. The groundwater recharge estimated by water balance method was found higher as compared to Krishna Rao (1970) and water table fluctuation method. The groundwater recharge estimated by water balance, Krishna Rao (1970) and water table fluctuation methods is found increasing in 13, 9 and 6 watersheds out of 17 watershed of the basin. The groundwater recharge in the basin during monsoon is found increasing at the rate of 36.47 mm, 8.86 mm. and 13.01 mm per decade by water balance, Krishna Rao (1970) and water table fluctuation methods respectively due to climate change impacts.ThesisItem Open Access ASSESSMENT OF MORPHOMETRIC CHARACTERISTICS OF SHETRUNJI RIVER BASIN USING REMOTE SENSING AND GIS 1635(JAU,JUNAGADH, 2012-08) WANDRE SARIKA SANTU; Dr. H.D.RANKThe study area i.e. Shetrunji basin falling in the district of Bhavanagar, Amreli and Junagadh, is a major one among 71 river basins of Saurashtra region of the Gujarat state, India. The agriculture is the major social, cultural and economic activity of the people in this basin. The water is the most important input resource in the agriculture. The major share of monsoon rainfall concentrated during July and August month. Therefore, the scope for the natural recharge is very less. The existing surface water resources in the study basin include three dams (i.e. Khodiyar and Shetrunji on main river and Munjiasir on its tributaries), and thus present surface water resources are not enough to meet real water demands of this basin area. The major part of the rainwater runs away to Gulf of Khambat Sea, hence there is a need of additional water harvesting structure across existing streams of different orders. Planning of any surface water resources development needs runoff characteristics of the basin to decide various kinds of water harvesting structures. Effective functioning life of such water harvesting structures depends on the sediment loads, carried by input runoff water. This sediment load of the runoff water should be inevitably minimized by taking appropriate soil conservation measures under watershed development plan. Planning any soil and water conservation requires the complete knowledge and quantified indicators reflecting true hydrological behaviour of contributory watershed. Hydrological behaviour of any natural w/atershed or basin depends on its geomorphological characteristics which need to be assessed and quantified properly. The determination of the morphometric characteristics of any watershed requires intensive survey, which is a tedious, difficult and time consuming activity if done by adopting traditional methods. Present study was undertaken adopting remote sensing and GIS technology to ease the task keeping with a view to explain the possibility of below given objectives in background; 1. To prepare the thematic maps of Shetrunji river basin. 2. To determine the morphometric characteristics of Shetrunji river basin. 3. To estimate the runoff potential. Using the remotely sensed images of the IRS P6 LISS III and Cartosat satellites, the maps for the theme of land use/land cover, soil, drainage, slope and contour were prepared adopting the PCI Geomatica 10.1 software. The GIS analysis was made for the said themes using the ArcMap V9.2. The linear parameters like stream order, stream length, bifurcation ratio, stream length ratio and length of overland flow stream frequency, areal parameters like stream frequency, drainage density, texture ratio, elongation ratio, circularity ratio, form factor and compactness coefficient and relief parameters relief, relative relief,relief ratio, channel slope and ground slope or watershed average slope were determined using GIS. The daily runoff was determined using the SOS ON method using daily rainfall data of monsoon months (June- October) for the year 1961-2010. The time series of monsoon rainfall, runoff and runoff volume were analysed for the preparation of relevant frequency curves. The Shetrunji basin was found as 7^^ order basin. The mean bifurcation ratio was found as 4.51 for the basin and it varied from 1.8 to 4 for the 17 watersheds which indicated that the geological structures did not amply disturbed the drainage pattern. The length of overland flow for watersheds of the basin was found varying from 0.1919 to 0.4419 km. while 0.3132 km for the basin. The drainage texture for watersheds of the basin varied from 3.3 to 10.7. For watershed 5G2B4a. 5G2B4b 5G2B4c and 5G2B6c it was greater than 8 reflecting texture as very fine in nature, while 5G2B5d. 5G2B5c, 5G2B6a. 5G2B6d were moderate in nature. Remaining watersheds remained coarser in nature while for basin it was found as 19.3 indicating it as fine in nature. The drainage density of the basin was found as 1.5965 km/km^ while for its 17 watersheds it ranged between 1.14 to 2.60 km/km^, indicating highly permeable subsoil region, dense vegetation cover and low relief. The elongation ratio of the watersheds varied from 0.45 to 0.85. The watersheds 5G2B2b, 5G2B2C, 5G2B4a, 5G2B4b, 5G2B4c, 5G2B5b, 5G2B5c, 5G2B6a and 5G2B2d were more elongated in nature, while remaining one were less elongated in nature. For the basin as a whole it was 0.6206 indicating less elongation. Similarly the form factor for basin was found 0.3023 and for basin watersheds it varied from 0.16 to 0.56. These low values of form factor indicate the existence of flatter peak flows for longer duration. The circularity ratios for watersheds were found in the range of 0.37 to 0.77 and 0.3853 for basin as a whole, which all together reflects elongated shape, low runoff and high permeability of the subsoil. The compactness coefficient for watersheds was found in between 1.14 to 1.79 and 1.6106 for basin as a whole. In general watersheds of study basin had elongated shape showing the fact there remains enough time for discharge of end runoff or indirectly a sufficient value of time of concentration to facilitate easy disposal of watershed runoff yield. The relief, relative relief and relief ratio for watersheds ranged from 0.095 to 0.445 km, 0.0915 to 0.5399 and 0,00273 to 0.019 and that of for the basin as 0.605 km, 0.1410 and 0.004427 respectively. These values of relief ratios indicate that the discharge capability of watersheds is very high and simultaneously the groundwater recharge potential is meagre. The ground slope and channel slope for different watersheds of study basin were found varied from 0.00307 km/km to 0.0192 km/km and 0.001549 km/km to 0 01224 km/km; and for the basin 0.004427 km/km and 0.002820 km/km, respectively. According to severity ranking of each watershed the compound parameters were estimated by averaging the priorities. The final priority was allotted to the watersheds according to the values of compound parameters. The value of compound parameter for all 17 watersheds varied from 6 to 11.50. The watershed 5G2B5d (compound parameter value 6) receives the highest III priority value and so it becomes potential and prioritized candidate for applying soil conservation measures, in contrast to the other watersheds with low priorities are subjected to lower degree of erosion. Such kind of watershed prioritization becomes helpful to overall watershed management planning. The area weighted runoff depth from the basin at 25%, 50% and 75% dependability was found 332mm, 127mm and 68mm respectively. The runoff potential of the basin at 75% dependability was found 388MCM which can bring additional area of 38800 ha under irrigation during winter season if harvested (assuming 50% storage losses and 50 cm seasonal irrigation requirement of crop). The morphometric properties determined for this basin as whole and for each watershed will be useful for the sound planning of water harvesting and groundwater recharge projects on watershed base. IV
