Spatial and Temporal Variability of Summer Monsoon Rainfall from the Period of 1971 to 2011 over Maharashtra State, India

This paper presents the results of an analysis of the decadal rainfall and rainy days from the period of 1971 to 2011 over Maharashtra, a state in India, during the summer monsoon season. Long term rainfall and rainy days data collected (1971–2011) over 35 districts of the Maharashtra state to understand the spatio-temporal variability. The long term analysis point of view decadal average rainfall and rainy days has been calculated. Variation of decadal rainfall and rainy days for the four monsoon months is analyzed. This study will be useful for agricultural planning, water resources management and other societal applications over different districts of the Maharashtra state.

Lineament and Morphometric Analysis for Watershed Development of Tarali River Basin, Western India

Tarali river is major tributary of River Krishna, which is flowing in western India. The study area lies between latitude 17°23' to 17°38' N and longitude 73°48' to 74°7' E. The area has steep to moderate slope and elevation ranges from 584 - 1171m above mean sea level. Basin exhibits hilly and mountain terrain forming ridges and Western Ghats with deep valley, plateaus and plain. The whole area can be obtained in topographical maps i.e. 47 G/14, 47 G/15 47 K/2, 47 K/3 covering area of about 627 sq.km, acquired from Survey of India. Present study includes lineament and morphometric analysis of Tarali River basin for management and conservation of watershed

Geochemical characteristics of water and its suitability for drinking and irrigation use in and around Warnanagar area of Kolhapur District (Maharashtra) India

Concentrations of selected physicochemical parameters (pH, electrical conductivity, TDS, Ca2+, Mg2+, Na+, K+, Cl- + SO4-2, CO32- and HCO3-) in surface and groundwater were studied in order to understand contamination level. For this study, water samples were collected from 22 locations representing the entire study area. Standard hydro-geochemical techniques were employed to determine the quality parameters of the water. pH and EC values of water samples show considerable changes. In most of the water samples Ca2+ is the dominant cation followed by Mg2+, Na+, and K+. HCO3- is the major anion followed by SO42- and Cl-. In general all the parameters are within prescribed limit except EC, TDS, Ca2+ and Mg2+. Water types indicate that the alkaline earth metals (Ca2+ + Ma2+) exceed the alkali metals (Na+ + K+).  Strong acid (Cl- + SO4-2) exceed the weak acid (CO32- + HCO3). Further, suitability of groundwater for irrigation was examined with different irrigation indexes. It indicates that the groundwater quality stands for EC values about 55% of the samples falls in the high salinity category and stands on a sodium percent (SP) values about 91% of the samples falls into excellent to permissible category. The RSC, SSP and KR values stand on all the water samples fall in safe for irrigation purpose. Overall, water samples from the study area shows salinity, corrosion and permeability hazards