Ratnagiri District Maharashtra
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1825/DBR/2014 भारत सरकार जल संसाधन मंत्रालय के न्द्रीय भूममजल बो셍 ड GOVERNMENT OF INDIA MINISTRY OF WATER RESOURCES CENTRAL GROUND WATER BOARD महाराष्ट्र रा煍य के अंत셍डत र配नाग셍री जजले की भूजल विज्ञान जानकारी GROUND WATER INFORMATION RATNAGIRI DISTRICT MAHARASHTRA By 饍िारा S.S.P. MISHRA एस. एस. पी. ममश्रा Superintending Hydrogeologist अगधक्षण भजू ल बैज्ञाननक मध्य क्षेत्र, ना셍परु CENTRAL REGION NAGPUR 2014 RATNAGIRI DISTRICT AT A GLANCE 1. GENERAL INFORMATION Geographical Area : 8326 sq. km. Administrative Divisions : Taluka-9; Ratnagiri, Sangameshwar, (As on 31/03/2007) Chiplun, Guhagar, Khed, Dapoli, Mandangad, Lanja and Rajapur. Villages : 1543 Population : 16,97,000 Normal Annual Rainfall : 2658 mm to 3973 mm 2. GEOMORPHOLOGY Major Physiographic unit : 5; Coastline, Estuarine plains, Lateritic plateaus, Residual hills, Scrap faces of Sahayadri. Major Drainage : 6; Savitri, Vasisthi, Shastri, Ratnagiri, Jaitapur, Wagothan. 3. LAND USE (2010-11) Forest Area : 60.0 sq. km. Net Area Sown : 2630 sq. km. Cultivable Area : 4010 sq. km. 4. SOIL TYPE Coarse shallow soil, medium deep soil, deep soil along river banks, coastal alluvium and coastal saline. 5. PRINCIPAL CROPS (2000-01) Paddy : 772 sq. km. Cereals : 1020 sq. km. Oil Seeds : 30 sq. km. Nachani : 173 sq. km. Cashewnut/Coconut/Supari : 928 Sq km 6. IRRIGATION BY DIFFERENT SOURCES (2010-11) - Dugwells/Tube wells : 2263 ha Canal Irrigation 6273 Ha Tanks/Ponds : 244/586 Net Irrigated Area : 14603 ha 7. GROUND WATER MONITORING WELLS (As on 31/03/2007) Dugwells : 48 Piezometers : 4 8. GEOLOGY Recent to sub-Recent : Alluvium, beach sand Pleistocene : Laterite and lateritic spread Miocene Shale with peat and pyrite nodules Cretaceous to Eocene Deccan Trap Basalt lava flows Upper Pre-Cambrian Kaladgi Series: quartzite, sandstone, shale and associated limestone Dharwar Super Group Phyllite, conglomerate, quartzite 9. HYDROGEOLOGY Water Bearing Formation : Basalt- weathered/fractured/ jointed vesicular/massive, under phreatic and semi-confined to confined conditions Laterite: GW occurs under phreatic i conditions Alluvium- Sand/gravel under phreatic conditions Premonsoon Depth to Water : 01.60 to 36.40 m bgl Level (May-2011) Postmonsoon Depth to Water : 01.42 to 16.3 m bgl Level (Nov.-2011) Premonsoon Water Level Trend : Rise: 0.003 to 1.65 m/year (2002-11) Fall: 0.008 to 0.53 m/year Postmonsoon Water Level Trend : Rise: 0.01 to 1.08 m/year (2002-2011) Fall: .05 to 0.37 m/year 10. GROUND WATER EXPLORATION (As on 31/03/11) Wells Drilled : EW- Nil; OW- Nil; Peizometer- 4 Depth Range : 30.00 to 90.00 m bgl 10. GROUND WATER QUALITY Good and suitable for drinking and irrigation purpose. 11. DYNAMIC GROUND WATER RESOURCES- (As on 31/03/2009) Net Annual Ground Water : 466.05 MCM Availability Annual Ground Water Draft : 52.49 MCM (Irrigation + Domestic) Allocation for Domestic and : 24.37 MCM Industrial requirement up to next 25 years Stage of Ground Water : 11.26 % Development 12. AWARENESS AND TRAINING ACTIVITY Mass Awareness Programme : 1 a. Date : 18/03/04 b. Place : Ratnagiri c. Participants : 100 Water Management Training : Nil Programme: 13. GROUND WATER CONTROL AND REGULATION Over-Exploited Taluka : None Critical Taluka : None Notified Taluka : None 16. MAJOR GROUND WATER PROBLEMS AND ISSUES Even though district receives rainfall in excess of 3500 mm/year, but water scarcity in non-monsoon season is reported in many villages. The falling trend of water level in the range of 0 to 0.20 m/year is observed in northern eastern parts of the district (in parts of Khed and Chiplun talukas) and in southern part of the district (in Rajapur taluka). Rain water Harvesting and Water Management techniques are solution for combating water scarcity problem. Due to discharge of industrial effluent in some industrial area ground water quality is affected. ii Ground Water Information Ratnagiri District Contents 1.0 Introduction ...................................................................................... 1 2.0 Climate and Rainfall ........................................................................ 3 3.0 Geomorphology and Soil Types ...................................................... 3 4.0 Ground Water Scenario ................................................................... 4 4.1 Hydrogeology...................................................................................................... 4 4.2 Water Level Scenario ........................................................................................ 6 4.3 Aquifer Parameters ........................................................................................... 8 4.4 Yield of Wells...................................................................................................... 9 4.5 Ground Water Resources ................................................................................ 10 4.6 Ground Water .................................................................................................. 12 4.7 Status of Ground Water Development ........................................................... 13 5.0 Ground Water Management Strategy .......................................... 14 5.1 Ground Water Development ........................................................................... 14 5.2 Water Conservation and Artificial Recharge................................................ 14 6.0 Ground Water Related Issues and Problems............................... 15 7.0 Mass Awareness and Training Activities ...................................... 16 7.1 M.A.P. and W.M.T.P. ...................................................................................... 16 7.2 Participation in Exhibition, Mela, Fair etc. ................................................... 16 8.0 Areas Notified by CGWA/SGWA ................................................. 16 9.0 Recommendations .......................................................................... 16 List of Figures 1. Location. 2. Hydrogeology. 3. Depth to Water Level (Premonsoon- May 2011). 4. Depth to Water Level (Postmonsoon- Nov. 2011). 5. Premonsoon Water Level Trend (May, 2002-2011). 6. Ground Water Resources (March 2009). List of Tables 1. Studies undertaken by CGWB. 2. Salient Features of Rainfall Analysis. 3. Aquifer Parameters. 4. Yield of Dugwells. 5. Ground Water Resources (March- 2009). 6. Classification of Ground Water Samples for Drinking based on BIS Drinking Water Standards (IS-10500-91, Revised 2003). 7. Classification of Ground Water for Irrigation based on EC and RSC. 8. Status of MAP and WMTP. Ground Water Information Ratnagiri District 1.0 Introduction Ratnagiri is one of the coastal district of Maharastra and forms part of Konkan region. It is situated in between the Western Ghats and the Arabian sea and lies between north latitudes 16030’ and 18004’ and east longitudes 73020’ and 73052’ and falls in parts of Survey of India degree sheets 47F,47P,and 47H. The District has geographical area of 8208 sq km, out of which about 60 sq km is covered by forest, where as cultivable area is 4010 sq km and net sown area is 2630 sq km. The district forms part of coastal basin and it is drained by Savitri, Vasisthi, Shastri, Ratnagiri, jaitapur and Wagothan rivers. The district headquarters is located at Ratnagiri town. For administrative convenience the district is divided in 9 talukas viz. Mandangad, Khed , Dapoli, Guhagar, Chiplun, Sangameshwar, Ratnagiri, Lanja and Rajapur. It has population of 16,96,777 as per census-2001. The district has 4 Nagar Parishads, 1Nagar Panchyat, 9 Panchyat Samitis and 851 Gram Panchyats. Central Ground Water Board has taken up several studies in the district. A list of studies conducted in the district is presented in Table-1. Table 1: Studies Undertaken by CGWB. S. Year Officer (s) Toposheets Area Type of No. covered Survey/Study (sq. km) 1 1981-82 D. B. Shetye 47 H/5, H/6, H/9 2000 SHS 2 1982-83 D. B. Shetye 47 G/7, G/8, 2160 SHS G/12, G/16 3 1988-89 P. K. Naik 47 G/11, G/15, 2150 SHS G/16 4 1989-90 R. P. Singh 47 G/1, G/5, G/9 2000 SHS 5 1989-90 D. K. Rai 47 G/2, G/3, G/6, 2000 SHS G/10 6 2000-01 P. K. Jain and 47 G/6, H/5 Impact of V.P. Nawale Industrialisation on ground water 7 2006-07 D.N. Mandal 47- F/4, F/8, 47 3129 GWMS G/1, G/2, G/3, G/4+8, G/5, G/6, G/7 and G/11 8 2007-09 D.N. Mandal 47 G/4+8, G/5, 3050 GWMS G/6, G/7, G/9, G/10, G/11, G/12, G/16 and 47 H/5, H/9 and H/13 (Here, SHS- Systematic Hydrogeological Survey, GWMS- Ground Water Management Studies) 1 Shri D. B. Shetye, Scientist-B in 1995 has compiled the report entitled "Ground Water Resources and Development Potential of Ratnagiri District, M.S.” Central Ground Water Board has so far not carried out ground water exploration work in the district. However, 4 Peizometers (Pz) to monitor ground water levels have been drilled in the district and their depth ranges from 30 to 90 m bgl. A map of the district showing the taluka boundaries, taluka headquarters, physical features and location of Peizometers and monitoring wells is presented as Figure-1. Figure-1: Location 2 2.0 Climate and Rainfall Climatic conditions in the district are strongly influenced by its geographical conditions. Being a coastal district, variation in the temperature during the day and throughout the season is not large. Maximum temperature at the coast rarely goes beyond 380C and in the interior, it seldom crosses 400C owing to proximity to the sea. Climate of the district is very humid and relative humidity seldom goes below 50%. The normal annual rainfall over the district varies from 2657.8