water quality mapping for solapur district using gis

Water Quality Mapping for Solapur District using GIS

Prepared by

Prashant Adsul M. Tech. First Year (113184002)

ES 680GIS for Environmental Planning and Management

Under the guidance of

Prof. A. K. DikshitCESE, IITB

Outline of Presentation

April 13, 2023 2Water Quality Mapping for Solapur District using GIS Prashant Adsul, CESE IITB

Study AreaScope and Objective Water Quality Index (WQI) GIS ApplicationOutput

Scope and Objective


To study ground water quality of Solapur district using GIS software

To create Water Quality Index (WQI) Generate Ground Water Quality Map based on the

WQI

Study Area


Geographically Solapur is located between 17.10 to 18.32 degrees north latitude and 74.42 to 76.15 degrees east longitude. Thedistrict is situated on the south east fringe of Maharashtra State.

The district in general has flat terrain

Area = 14844.6 sq.kms338.8 sq.kms is Urban area 14505.8 sq.kms is Rural area

Tehsils: 11

Data for Analysis


Three Years (Years 2007-2008-2009) ground water Quality date used calculation of WQI

Data was downloaded from MPCB website


Methodology for Data Interpretation

(Ramakrishnaiah et al, 2009)

Each of the groundwater samples were analyzed for various parameters such as pH, total hardness, calcium, magnesium, chloride, TDS, fluoride, nitrate, sulphate, manganese and total alkalinity

Computing WQI of Groundwater, three steps:

Data Source: MPCB website (2007-2008-2009)


Method for Calculation of Water Quality Index for Ground Water


Step IIThe relative weight (Wi) is computed

Step I Each of the selected parameters has been assigned a weight (wi) according to itsrelative importance in the overall quality of water for drinking purposes.The maximum weight of 5 has been assigned to the parameter nitrate due to its major importance in water quality assessment. Magnesium which is given the minimum weight of 2 as magnesium by itself may not be harmful




Step III

A quality rating scale (qi) for each parameter is assigned

qi = (Ci/ Si) x 100

where qi is the quality rating, Ci is the concentration of each chemical parameter in each water sample in mg/L, and Si is the Indian drinking water standard for each chemical parameter in mg/L according to the guidelines of the BIS 10500, (2004-2005




SIi is the subindex of ith parameterqi is the rating based on concentration of ith parameter n is the number of parameters


Water quality classification based on WQI value

All WQI calculations are performed in Excel

Steps in GIS Project


Base Map of Solapur

Georeferencing and Rectification

Shapefile Creation-Polygon

Digitization of Map

Analysis

Attribute Data Entry

Result Determination based on conditions

Set Layer Property

Spatial Query

1 Geo-referencing


Base Map of Solapur


Source: Google Maps

1 Geo-referencing


Checking RMS Error

2 Creating Shapefile



Creating Shapefile in ArcCatalog

3 Digitization of Map



Digitization of Map in ArcMap


Digitization: Tehsil

4 Attribute Data Entry



Attribute Data Entry


Attribute Data : Joining Excel Data


Attribute Table: Water

5 Set Layer Properties



Label Expression (Tehsil Layer)

6 Spatial Query



Tehsils< Nitrate 45 mg/l


Tehsils> Nitrate 100 mg/l

7 Output



Tehsils: Nitrate Conc. Map


Nitrate Conc. : Bar Chart


Pie Charts: WQI, Nitrate and pH


Bar Charts: WQI, Nitrate and pH


Total Hardness mg/l


Tehsils: Excellent Water Quality Based on WQI

8

Output for Printing and Publications Purpose



Tehsils: Nitrate Conc. Map


Tehsils: Water Quality Map


Create Reports


Conclusion

Sangola Indicates Excellent Water Quality. Water Quality Index is affected by Nitrate conc. Agricultural runoff is the major contributor to the nitrate contamination in ground water.


References1. Ramakrishnaiah, C.R., C. Sadashivalah and G. Ranganna,2009. “Assessment of water

quality index for the groundwater in Tumkur Taluk, Karnataka State”, Indian J. Chem., 6: 523-530

2. MPCB report on water quality report for Maharashtra State

3. Yisa J. and Jimoh T. “Analytical Studies on Water Quality Index of River Landzu”,2010 American Journal of Applied Sciences 7 (4): 453-458

4. Lecture Notes for Course ES 680 by Prof. A.K. Dikshit, CESE IITB Mumbai

5. Google Maps


Acknowledgement

Prof. A.K. Dikshit

Mr. Nishit AmanMs. Arleen KaurES 680 GIS Group

water quality mapping for solapur district using gis

Technology

water quality mapping

overall quality of water

water quality classification

water quality assessment

gis prashant adsul

ground water quality

ground water quality

ground water step