L E G E N D GROUND WATER PROSPECTS MAP GEOMORPHIC DEPTH TO RECHARGE G R O U N D W A T E R P R O S P E C T S RECHARGE MAP UNIT GEOLOGICAL SEQUENCE / CONDITIONS STRUCTURES ( PREPARED FROM SATELLITE IMAGE INTERPRETATION WITH LIMITED FIELD CHECKS ) ROCK TYPE UNIT / LANDFORM WATER LEVEL R E M A R K S ( HYDROGEOMORPHIC BASED ON SUITABLE & ( PROBLEMS / LIMITATIONS ) UNIT ) TYPE OF WELLS HOMOGENEITY PRE / POST- MONSOON AVAILABILITY AQUIFER MATERIAL DEPTH RANGE YIELD RANGE QUALITY OF PRIORITY SUITABLE IN THE UNIT GROUND REPRESENTED IN (AVERAGE IN METERS) OF WATER OF WELLS OF WELLS WATER & SUCCESS WATER PT = PERCOLATION TANK THE MAP WITH ( SUGGESTED ) ( EXPECTED ) RATE OF WELLS POTABLE (P) IRRIGATED CD = CHECK DAM ALPHANUMERIC CODE NON - POTABLE (NP) NB = NALA BUND ( RAINFALL & OTHER LS AREA NO. OF WELLS = LOOSE SEDIMENTS DW = DUG WELL 3 ( PROBABILITY ) RW = RECHARGE WELL ( REPRESENTED IN ( REPRESENTED IN SOURCES ) PR = PERMEABLE ROCK MIN - MAX ( in LPM or m / day) OBSERVED RW = RING WELL ( INDICATE REASONS IF DT = DESILTING OF TANK FIR = FISSURED ROCK ( APPROX . RANGE THE MAP WITH THE MAP WITH BW = BORE WELL NON POTABLE ) RP = RECHARGE PIT FR ( IN METERS ) IN PERCENTAGE ) Kilometers NUMERIC CODE ) ALPHABETIC CODE ) = FRACTURED ROCK TW = TUBE WELL VERY HIGH SD = SUBSURFACE DYKE WR / = WEATHERED ROCK / DBW / = DUG CUM-BORE WELL / HIGH RS = RECHARGE SHAFT WM WEATHERED MATERIAL DTW DUG CUM-TUBE WELL MODERATE ST = STORAGE TANK 0 1 2 3 4 5 © IR = IMPERIVIOUS ROCK LOW SCM = SOIL CONSERVATION MEASURES Groundwater prospects very high SCALE - 1 : 50,000 CB111 Channel Bar No Well Observed Excellent LS (CB) TW 5-10 m 400-500 LPM Very High P Nil Not Required with high recharge potential. Recharge structures not required. MAP SHEET NO. 78B/6 DARJEELING & JALPAIGURI DISTRICTS, WEST BENGAL s t i " Patanbari TG " Panchokalguri " Champasa TG " Phapuri s Groundwater prospects very high " Lutkia " Braid Bar o No Well Observed " Khauria C BB111 Excellent LS TW with high recharge potential. Gwai Mandlaguri (! 1 (BB) 5-10 m 400-500 LPM Very High P Not Required " Panchami " 4/4 3 p Nil " Subal H Recharge structures not required. Tarabari " N e Tarabari " Narayan PAD111 an " Nabir D las Ri " Gori PAM18 Jot " S7 " Dumriguri Ba ve r Durgapur TG " ! 3/50ª y PAM18 " Nischintapur TG " Nagru Point Bar Groundwater prospects very high a No Well Observed RW Not Required " Bataliguri PB111 Very Good LS 5-10 m 400-500 LPM Very High P Nil with high recharge potential. " Kuripali (PB) TW D Recharge structures not required. NH " Phapuri1 S10 t " Laohka 5 4/46 5 ! ) ª n " 3/46 ! " Chakla " Dabgram y Baunibhita ª e " Bengdobi TG" Dhaniram a " Maragachh 4/30 s RW " Rangra ! Barabhita 4/50 ª D " e " Dina ! Alluvium Meander Scar No Well Observed LS TW ª " Banyakhari MS111 Very Good Highly productive shallow aquifers r (Sand Dominant) 10-15 m 300- 400 LPM High P Nil Not Required t (MS) with good recharge. " Hinglai ! " Langtichara ª P 3/13 Mandlaguri " n (111) " Matigara / " Radalbhita " " Rama e PAD111 n " Radha " Tari s " Sahananda o e 4/15 i " Mairibhia TG Latan ! " " Mayaram " Bairatisal " Chhota Mohansingh ( t r Highly productive shallow aquifers " Batlabari APY113 S9 RW CM111 a " Mala P Cut-off Meander No Well Observed Good LS 10-20 m 200-400 LPM High P Nil Not Required with good recharge from the river 4/40 " BEoabhara 4/9 ( TW ! E E E (! m (CM) base flow. ª " Motibagan TG " Nandatel E E E E r " Panthabari " Banganbari TG 3/50 ay o ! lw " RamduElalE E E ! 4/9 Siliguri " Kamalpur TG ª ai " Tulakata ( " Gosainpur R " 4/9 F " n Bara E E E E (! Sahajram 4/40 aya ! al " Mohanangi ª Him n Sannyasihat ng " Mairu " 5/40 li o 6 / 4 ! " Karaibari ee Receives good recharge and forms ª Darj " Binnaguri Flood Plain Gosainpur a " Baghdogra " " Chandhari Chulam FP111 Very Good LS TW <30 m 250-350 LPM Very High P Nil Not Required " Mahasingh shallow aquifer.Overall quality of g (FP) 1 " Jot the water is potable. E E Shujiabani " u " Kadamguri Dabgram " Hulai E E " Bara Bhita a " Pharyani h E E Nimu " " " Nimaru " Kauwakhali Dabgram1 S i " Lalman " Bharatsingh d 5 / 3 Baja a Piedmont Good ground water prospect " Jhar " Thiknakata N PAD111 Alluvium Deep Good LS TW 30-80 m 100-300 LPM Moderate P Nil Not Required at greater depth as the principal " Pelku n 9 Alokhihari " Dhundi " i (PAD) " Singijhora t aquifer occurs below PAM. 3/46 Raja " Radha Porajhar a ! Dhundir " Jot S " Birsingh ª Jhar Gaurangaguri " " Jot " Baghdogra " Putimari " 6/48 " ! " Bhanra Ranidanga ª Chhota M " Abhiram " Prathuram " Chandal a h " Bangeu n " Bhatan " Dhantala a o " Shiabhita n Alluvium i a Alluvial Plain Highly productive aquifer at t 5 / 3 " Rangali n " Turibhita APY113 (Sand and Silt) Good 15 d 25-30 m 200-250 LPM a Younger P " Dhansara LS TW High Not Required shallow depth with good BB111a (113) ) m (APY) FP111 R 13 recharge. r Mohani i e " Dikrabhum " Ambari v " Nimbubhita " T.G " Saibhita e " Nayapara o " Bairagibhita r n " Jasarat " Binnaguri F e " Dhaju i 2/15 " Dhantala c " Helakadam(! Bara h " Binnaguri s " Basu Prothuram " o l " Baokali " Hatbiara o Raghunath " " Kot K " Narayan o " Panarghumia TG " Radha " Marabari - H Dara a Abandoned Highly productive shallow g RW " Nirmal AC13 Baksh " Channel Excellent to 10-30 m 300-400 LPM Nil n Very High aquifers with good recharge e LS P Not Required " Tarbandha No Well Observed TW a S11 " " t (AC) Very Good from base flow. Kholel " Dangapara APY113 G a Tawa / " i " Maghubhita " Ahmaddighi L " Kamargachh r " Dalalbhita " Alluvium u Jogibhita - 5/12 " Balaram PB111 " Naradeb g (Sand,Silt & Clay) " Bhelku ! " Changrabandha ª i Kirpali " y (13) Horobanbhita " a 2/90 Ruthiabari " 4/67 l ! " Bhola ! p ª l ª Sibdaya r " " Badiagachhi a Madar Ambari a " Bhosipatar Nirmal CM111 Jamadargachh " " J RW " Dolna " " Baksh AC13 " Falakata / Palaeo-channel E LS Antu Jot R1 No Well Observed Very Good TW a P Nil Kalangni ( 15-20m 150 - 200 LPM Very High Not Required Highly productive shallow Laldas " PC13 (PC) Fakirdhip " Kajaram d " "" " Jot Jotia aquifers with good recharge. " l " Hari jot " " " Nipania " Kuthi " Bhandarigachh a " Ruidhasa Hatiram " " Phulbari " " M " " " Sasurgachhh " Ganagachh Letuspokhri " S " H 6/52 " ) MS111 5/45 " 1 ! " Hanskua TG ! 2 e / ª ª A n " a " Jogbhita e r " Pradhanpara CB111 " c n " " Saltarbari o " o o h l Jaidevbhita i Haudi j t " l o a " a " Jot " " Dhoragachi H " . h Ruiahasa m " Gadhiagachh r r T / E Alluvium Piedmont " o - " Dandibhita TW " i l e F 5 / 3 " Babbhite (Gravel Dominant) a Alluvium Moderate Moderate ground water prospect n Moderate Not Required " PAM18 i Good LS DTW 50-100 LPM P g 60-80 m Nil " " t Sanan Bhankarbhita e n " a c (18) i (PAM) at more depth due to piedmont slope. " 7 o Hardabhita " Jot Rupchandgarh " s " M " " t Bhajan " / s Rupchandragachi " Damdama m " Tetliguri " Chomakoli i a Jot Dundia a " " e s " Rupandighi " l " Jot " Lakshmithan " Sitaguri l S Bhuj a P . t h " " Narayani TG L " C Kuchia Devigami " Nijbari " Balabari " Jamdira ( " " " Bogribhita " Jot " " Binnagari " " hat " Sitani " " " Badlagachh " Buabari Baneswar " " Kairbari " " Gayaganga TG " Kaomi F F " Jot " These are fault / fracture zones, which generally act as conduits for movement of ground water in hard rocks. Along these zones, the yields are significantly higher and wells are likely to be sustainable for longer duration. However, the inferred fractures need to be confirmed by detailed ground surveys. Nimbutari " " " Jot 4/46 " " " 3/45 ! " Kanarbari ! ª " " ª Baruagachh " Sahibpara " " " " " Satrubhita Lakhan Jot S12 " D Q P " " " D Q P Kalu Jot These are dykes, quartz reefs and pegmatite veins, which generally act as barriers for ground water movement. " " Q Q P P " Nimbutari " D D " Dhamnagachh " L Budhugachh " Karibhita " Mohanpara " " ! 4/17 Mohinpal A ( " " Jumagachh Bhunjargachh " N Mohanpara " " Jot " Manasa A " C " " Jot " Kanubhita 2/15 N.B.-The depth range and yield range of wells may vary within the unit because of certain inhomogeneities. Fractures/Lineaments which are clearly observed / inferred from the satellite image are indicated on the map. There could be some obscured fractures which also influence the ground water prospects. " Kachumani ! " Jogeshwarpara " Kamala TG " " N ª Phansidewa Hat " Halka Jot I Locations of the recharge structures shown in the map are tentative. This map is useful for narrowing down the target zones,and exact location on the ground for wells and recharge structures should be identified based on follow-up ground hydrogeological/geophysical surveys. 4/31 " Chutragachh Jamadar ! " " " Akalugachh Molani ª A " " " Para Fakiraband Jot M " " " Narayan " Phaudigachh K Jalil N " " Jot " " Jot Chilamkhand " A Helagachh " Hariarbari " " " FP111 B Charutbhuj " " " Kayethpara Bara 4/35 T 6/60 ! " Ghoshpara " H " ! ª " " Ambari ª " Potiya Baramtai " Sudamgachh " G Lachhubhita " I " STRUCTURAL INFORMATION Dubanochi " GROUND WATER PROSPECTS INFORMATION HYDROLOGICAL INFORMATION BASE MAP INFORMATION LOCATION INFORMATION R Jamadargachh " Dengapara " " A " Dumbhita " " " Kapalipara Rakshmibari DESCRIPTION SYMBOL SCHISTOSITY/ " Gorigachh D DEPTH RANGE OF WELLS DIPS BEDDING " Nikurgachh " SYMBOL DESCRIPTION Sagira YIELD o STATE INDEX DISTRICT INDEX E E N COLOUR FOLIATION " Jot RANGE SHALLOW MODERATE DEEP Dhumgarh " A " CODE CANAL / TANK IRRIGATED AREA E E " GENTLE ( < 15 ) o NH - 34 NATIONAL HIGHWAY N < 30 METERS 30 - 80 METERS > 80 METERS " OF WELLS E E E E E GROUND WATER IRRIGATED AREA S E E E A " Fakirgachh " Punatugachhi " Bijlimuari " " " Ketabgachh MODERATE ( 15 - 45 ) E E E E o R Satbil H " E E E Photamari