International Journal of Computational Engineering Research(IJCER)
Rain water harvesting and geostatistical modelling of ground water in and around ism campus dhanbad dhirendra
1. Rain Water Harvesting and Geostatistical Modelling of
Ground Water in and around ISM Campus Dhanbad,
Jharkhand
M.Tech Mineral Exploration Dissertation
Presented by:
Dhirendra Pratap Singh
M.Tech (Mineral Exploration)
Department of Applied geology
Indian School of Mines, Dhanbad
Guide:
Prof. B.C.Sarkar
Professor Department of Applied Geology
Indian School of Mines, Dhanbad
Co-Guide:
Dr S.C.Dhiman
Former Chairman Central Ground Water Board
2. Presentation Highlights
• Artificial Recharge and Rain Water Harvesting in ISM
Campus.
• Geology of I.S.M. Campus.
• Hydrogeological Studies.
• Geophysical Studies.
• Geostatistical Modelling Studies.
• Ground water quality;
• Groundwater Resource Estimation and Management.
• Concluding Remarks.
3. Fig 2 Location map of ISM campus with recharge bore wells
5. Artificial Recharge Technique in I.S.M.
• Roof Top Harvesting- In this Technique the top of the roof of the buildings in I.S.M. are
used as the catchment area of rain water for harvesting using artificial recharge
techniques.
Need for Augmentation and Management of Ground Water Resources
within I.S.M.
• Steep increase of human population in the campus.
• High water demand expected due to increase in developmental works and expansion
program.
• Conservation and management of available resource to meet the growing needs.
6. Supply Status of Water in I.S.M. Campus:
Sr.No
. Tube Well No. Location
Discharge/Hr.
(Litre) Pumping Hrs
Total
Discharge/ Day
Units
Cosumed/Day
1 Dug Well No. 1 Near Ruby hostel 15000 10 150000 55.95
2 Dug Well No. 2 Workshop Campus 12000 10 120000 55.95
3 Dug Well No. 3 Near Petroleum Building 12000 10 120000 111.90
4 Dug Well No. 4 Staff Colony 8000 10 80000 55.95
5 Dug Well No. 5 Near UGC Colony 20000 10 200000 111.90
6 Dug Well No. 6 Near CME Building 20000 10 200000 111.90
7 Dug Well No. 7 Near GJLT Hall 8000 3 24000 11.19
8 Deep Bore Well-9 Staff Colony 12000 9 108000 50.36
9 Deep Bore Well-10 Bamboo Garden 20000 12 240000 134.28
10 Deep Bore Well-11 Beside Seismology Observatory 20000 14 280000 78.33
11 Deep Bore Well-12 Jasper Hostel 8000 10 80000 37.30
12 Deep Bore Well-13 In Front Of Old EDC 8000 10 80000 37.30
13 Deep Bore Well-14 SBI ISM Campus Branch 8000 12 96000 44.76
14 Deep Bore Well-15 Beside 150 Qrts GR Side 8000 12 96000 44.76
15 Deep Bore Well-16 EDC Extension Building 8000 10 80000 37.30
Total 1954000 979.13
Total Consumption / Month 1954000x30 = 58620000 29373.90
7. Geology and General Succession of the Area:
Campus geology is a part of Chotanagpur Gneissic
Complex and is characterized by a diverse assemblage of
igneous and metamorphic rocks.
• Soils and recent sediments.
• Dolerite (Intrusions).
• Pegmatite, and leucogranite (intrusions).
• Megacrystic porphyritic granite (intrusions).
• Quartzo-feldspathic gneisses with mafic enclaves.
(Basement) equivalent to Chotanagpur Gneissic
complex.
9. y = -8.36x + 331.44
R² = 0.0839
0.00
100.00
200.00
300.00
400.00
500.00
600.00
2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014
RAINFALL MONTHLY(mm) AND ITS TREND
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
R=0.289
Decreasing
Trend of
Rainfall
10. • Total Rainfall in 2001 was 1516.20mm
• Total Rainfall in 2014 was 984.80mm
• If we Predict with linear Model what will
be the situation ?????
453.40mm Its alarming 2028
19. Regression line of pre-monsoon
Y = 0.7625X+ 57.166
R² = 0.8787
228
230
232
234
236
238
240
242
244
246
248
220 225 230 235 240 245 250
KE
Measured
Kriged Estimate Premonsoon
Y = 0.6107X + 94.288
R² = 0.7603
234
236
238
240
242
244
246
248
230 235 240 245 250 255
KE
Measured
Kriged Estimate Postmonsoon
Regression line of post-monsoon
Y = 0.6049X + 0.7706
R² = 0.7757
0
1
2
3
4
5
6
7
8
0 2 4 6 8 10 12
KE
Measured
Kriged Estimate of Fluctuation
Regression line of fluctuation
For Pre-monsoon
‘t’calc on ‘r’ =
𝒓 𝒏−𝟐
𝟏−𝒓𝟐
= 18.40
‘t’table (α=0.05, ν=n-2, q=1-α) = 1.68
(i) If tcalc ≤ ttable : H0 is accepted and r is insignificant
(ii) If tcalc ≥ ttable : H1 is accepted and r is significant
20. For Post Monsoon
‘t’calc on ‘r’ =
𝒓 𝒏−𝟐
𝟏−𝒓𝟐
= 12.80
‘t’table (α=0.05, ν=n-2, q=1-α) = 1.67
(i) If tcalc ≤ ttable : H0 is accepted and r is insignificant
(ii) If tcalc ≥ ttable : H1 is accepted and r is significant
For Fluctuation ‘t’calc on ‘r’ =
𝒓 𝒏−𝟐
𝟏−𝒓𝟐
= 11.90
‘t’table (α=0.05, ν=n-2, q=1-α) = 1.68
(i) If tcalc ≤ ttable : H0 is accepted and r is insignificant
(ii) If tcalc ≥ ttable : H1 is accepted and r is significant
Monsoon recharge can be expressed as -
R = (h x Sy x A) + DG
Where,
h = rise in water level in the monsoon season,
A= area for computation of recharge,
Sy = specific yield,
DG = gross groundwater draft
The monsoon groundwater recharge has two components – rainfall recharge
and recharge from other sources. Mathematically it can be represented as –
R (Normal) = Rrf (normal) + Rc + Rsw + Rt + Rgw + Rwc
Rrf is the normal monsoon rainfall recharge.
The other sources of groundwater recharge during monsoon season include Rc, Rsw, Rt,
Rgw, Rwc which are recharge from rainfall, seepage from canals, surface water irrigation,
tanks and ponds, groundwater irrigation, water conservation structures respectively
22. The study estimated that about 83% of total volume of groundwater available is consumed and thereby
maintaining a balance of about 17%.
------------------------------------------------------------------------------------------------------------------------------------------------------
-
Concluding Remarks
The study revealed a mean rise of 2.29m in the groundwater during the year 2014.
This figure of groundwater resource balance is expected to improve over the years with continued monitoring study
of the fluctuating trend of the groundwater levels with rain water harvesting implemented and last but not the least,
an effective groundwater management.
Total replenishable volume of water recharge = (Area x fluctuation x 0.03) + Total draft during the period
Here, 0.03 is the specific yield considered for hard rock as per GEC, 1997
So, The volume of water recharged is 144270 m3 x 1000 = 144,270,000 liters
Consumption from ground water for the study period is 19,54,000 x 7 x 30 = 410,340,000.00 liters
Total Resource:- 410,340,000 + 144,270,000 = 554,610,000 liters
Groundwater Resource Estimation and Management