Ground Water Information Satara District

Ground Water Information

Satara District (source : GOVERNMENT OF INDIA MINISTRY OF WATER RESOURCES CENTRAL GROUND WATER BOARD)

The climate of the district is on the whole is agre able. The winter season is from December to about the middle of February followed by summer season which last up to May. June to September is the south-west monsoon season,whereas October and November constitute the post-monsoon season. The mean minimum temperature is 14.4° C and mean maximum temperature is 36.8° C at Satara town in the district.The rainfall analysis for the period 1901-2005 reve

als that the normal annual rainfall over the district varies from 473 t

o about 6209 mm. In the eastern part of the district around Mhaswad (Man taluka) and Phaltan taluka it isminimum and increases towards the west and reaches maximum around Mahabaleshwar. However, the probability of occurrence of normal rainfall is maximum (50 to 55%) in the south eastern parts around Mhaswad (Man), Vaduj, Pusewadi and Karad. While the probability of receiving excess rainfall (i.e., 25% or more) varies from 9% to 30%. It is minimum around Mhaswad (9%) and maximum around Pusewadi (30%). The study also revea

ls that entire eastern, north eastern and south eastern parts of the distri

ct comprising almost entire Khandala, Phaltan, Khatav, Mhaswad talukas and parts of Koregaon and Karad talukas in the plains which experienced droughts for more than 20% of the years can be categorized as “drought area”. The average rainfall data for the period (1998–2007) are presented in Table–3.The perusal of Table–3 indicates that the average a nnual rainfall during 

River Map of Satara

River Map of Sanglithe period ranges between 513.80 mm (Man) to 5896.48 mm (Mahabaleshwar) Water Level Scenario Central Ground Water Board (CGWB) monitors water level data of 52 National Hydrograph Network Stations (NHNS) in the district. The NHNS are measured four times in a year i.e., January, May (Premonsoon), August and November (Post monsoon). 4.2.1 Depth to Water Level – Premonsoon (May 2007) The depth to water level in Satara district during May 2007 ranges from 1.00 m bgl (Morgir(Shivpur Peth)) to 28.90 m bgl (Khandala). Depth to water levels during premonsoon (May 2007) has been depicted This dominant range of water level is followed by shallow water level range within 5 m bgl, which occupies south western and west central parts of the district. Apart from this a small isolated patch in north eastern part of Phaltan taluka is also observed. The deeper water levels (10 to 20 m bgl) are mainly observed in two elongated patches, one in north western part of the district near Mahabaleshwar, Pachgani, Shirur, Pimpode and Wathar and one in eastern part of the district in parts of Man and Khatav talukas, whereas deeper water level of more than 20 m bgl is observed only at one place i.e.Khandala Water Level Trend (1998–2007) Long term water level trend for premonsoon and post monsoon periods for last 10 years (1998–2007) have been computed and analysed. The analysis indicates that during premonsoon period rise in water levels ranging between negligible at few NHNS and 0.56 m/year (Tathvade) have been recorded at 26 NHNS, while fall in water levels ranging between negligible at few NHNS and 0.51 m/year (Malkapur) have been recorded at 20 NHNS. During postmonsoon period rise in water levels have been recorded at 2 8 NHNS and it ranges from negligible at few NHNS to 0.32 m/year (Mirgaon), whereas at 16 NHNS fall in water levels ranging between negligible at few NHNS and 0.28 m/year (Pingli) have been recorded. The premonsoon trend map was also prepared and the same is presented in  the rise in water level trend of up to 0.20 m/year is observed in almost entire eastern and western parts of the districtcovering entire Phaltan, Man and Khatav talukas and parts of Koregaon, Patan and Jaoli talukas. The fall in water level trend of up to 0.20 m/year is observed in an elongated patch extending from north to south in central part of the district covering parts of Khandala, Wai, Satara, Koregaon, Patan and talukas and almost entire Karad taluka. Thus the future ground water conservation and recharge structures need to be prioritized in these areas. As per estimation total annual recharge is 1230.12 MCM and the natural discharge is 62.64 MCM, thus the net annual ground water availability comes tobe 1167.48 MCM. The annual draft for all uses is es timated at 716.68 MCM with irrigation sector being the major consumer having a draft of 665.65 MCM while the draft for domestic and industrial uses was estimated at 51.02 MCM. The netannual ground water availability for future irrigation is 433.70 MCM, whereas the allocation for domestic and industrial requirements is 93.48 MCM. The stage of ground water development in the district varies fro m 23.39% (Jaoli taluka) to 80.61% (Khatav taluka). The overall stage of ground water development for the district is 61.39%. Out of 11 talukas, only one taluka viz., Khatav taluka have been categorized as “Semi-Critical”, whereas remaining 10 talukas are fall under “Safe” category. The watershed wise ground water resource estimation was also done for all the 50 watersheds in the district. Out of 50 watersheds, 7 watersheds viz., BM- 87, BM-101, KR–6, KR–11, KR–22, KR–23 and KR–42 have been categorized as “Semi-Critical, 3 watersheds viz., KR-10, KR–32 and BM–85 have been categorized as “Critical” and 1 watershed i.e., KR–2 has been categorized as “Over-Exploited”. In these 11 watersheds and Khatav taluka future ground water development is not recommended without adhering tothe precautionary measures i.e., artificial recharge to augment the ground water resources and adoption of ground water management practices. Theremaining 39 watershedsfalling under “Safe” category are recommended for future ground water development.