• Introduction.

In the year 1972 Department of Mines and Geology, Ground Water Survey unit was established in district. Department has been involved in the studies related to ground water system of the district. As per the Govt order No: CG24.MGS87 Dated:10-03-1987, office of the senior geologist department mines and geology is working under the control of Zill Panchayat (Z.P) Dharwad from 01-04-1987 . The objectives of the department is systematic monitoring of ground water level, and selection bore well/well locations, detailed village level (Micro watershed) survey, in understanding the complex issues related to groundwater movement and storage , availability of resources and scope for further development etc, the monitoring of the quality of groundwater for drinking , irrigation and various other purposes, preparation of the water level and water quality maps are some other important objective of the department.



• Organization Structure

1. The state level administrative set up

2. District level Office staff.


• General information of Dharwad district.

Physiographically the disrict represents theree divisions, viz the Rogged hilly terrain in the westren part of the district, undulated , pediplain in the centreal part, and plain/gently sloping land (Maidan), in the eastern part.

The district is situated in northern transitional agro climatic zone, the western part of the district enjoys tropical climate, while the eastern taluks namely Navalgund, Kundgol and part of Hubli experience the dry climate.



• GEOLOGY



Geologically, the district is composed of Gneiss in Eastern part and Schistose, Greywacke, Phyllites , Argillites and BFC in the Western part. Basic Dykes also traversed. The general trend is NNW-SSE direction with steep easterly dip.

The ground water occurs under semi-confined and confined conditions. Weathered, jointed and fractured rocks are the main aquifers in the district. In the weathered zone it occurs in phreatic conditions, while in the jointed and fractured rocks it occurs under semi-confined conditions. Thus, the zone of weathering and fracturing in the rock are very important in the movement and occurrence of ground water resource. Wherever the rocks are hard and massive, the availability of the ground water is also poor

The main source for Ground water is rain fall. The depths to water levels in the said aquifers are varying from 12.28 mtrs to 40 mtrs. The dug well depth in the district ranges from 15 to 45 meter depth and bore well depth is 100-220 meters. Average ground water fluctuation is 11 to 18 meter are noticed in bore wells and 5 to 9 meters in dug wells . In general the quality of ground water in western part of the district is moderately good. While that in the eastern part of Hubli(eastern part) Kundgol and Navlgund taluk is having brackish water The depletion of water in certain over exploited pockets is possible to be rejuvenated by designing artificial recharge structures.

• DYNAMIC DATA MONITORED IN THE DISTRICT

Sl.No	Parameter	Description
1	Ground water level recording	Monthly ground Water level is recording from 9 open wells and 29 bore wells
2	Water quality	Every year 33 water samples is collecting for quality test.
3	Village wise Hydro Geological parameters	In the selected micro watershed
4	Ground water estimations	As Per GEC-1997 guidelines the resource estimation has been made during 2009




• Taluk wise Average Ground Water Level Data with For Last Eight Years(Below ground level in meters) as on NOV-30th-2012

1. Hubli Taluk water level data

2. Dharwad Taluk Water Level Data

3. Kalghatagi Taluk Water Level Data

4. Kundgol Taluk Water Level Data

5. Navalgund Taluk Water Level Data


• Ground water resource potential of Dharwad District.

Annexure IIID-2: ASSESSMENT OF DYNAMIC GROUND WATER RESOURCES OF KARNATAKA SATATE-ADMINISTRATIVE UNIT WISE RESOURCE(2008-2009)

Sl.No	District	Taluk	Command Non-command	NET ANNUL GROUND WATER AVAILABILITY	EXITING GROSS GROUND WATER DRAFT FOR IRRIGTION	EXITING GROSS GROUND WATER DRAFT FOR IRRIGTION AND INDUSTREIAL WATER SUPPLY	EXISTING GROSS GROUND WATER DRAFT FOR ALL USES	PROVISION FOR DOMESTIC AND INDUSTRIAL REGQUIREMENT SUPPLY TO 2025	NET GROUND WATER AVAILABILITY FOR FUTURE RRIGATION DEVELOPMENT	EXISTING STAGE OF GROUND WATER DEVELOPMENT	SAFE	SEMICRITICAL	CRITICAL	OVER EXPLOITED
				ham	ham	ham	ham	ham	ham	ham	%	%	%	%
1	Dharwad	Dharwad	Non-Command	5101	3214	587	3801	723	1163	75	50	50
2	Dharwad	Hubli	Command	636	92	71	164	175	368	26	60	40
3	Dharwad	Hubli	Non-Command	2517	1064	233	1297	284	1169	52	90	10
4	Dharwad	Hubli		3152	1156	305	1460	459	1558	46	80	20
5	Dharwad	Kalghatgi	Non-Command	4909	1988	211	2199	253	2668	45	100
6	Dharwad	Kundgol	Non-Command	2883	802	312	1114	382	1700	39	100
7	Dharwad	Navalgund	Command	4412	2557	387	2943	957	898	67	30	7
8	Dharwad	Navalgund	Non-Command	1773	1321	251	1572	295	354	89	30	40		30
9	Dharwad	Navalgund		6185	3878	638	4515	1252	1252	73	25	60		15

WATER LEVEL FLUCTUATION COMPARED WITH RAIN FALL DATA OF

1.DHARWAD TOWN

2.KALGHATGI TOWN

3.Kundgol TOWN

4.ANNIGERI TOWN

5.HUBLI TOWN

Officer Address:-

OFFICE OF THE SENIOR GEOLOGIST,
GROUND WATER SURVEY UNIT,
DEPT OF MINES AND GEOLOGY,
Z.P. DHARWAD-580001
E-mail ID: sggwsd[at]gmail[dot]com, Phone Number /Fax: 0836-2441246
Website: www.khanija.kar.ncode