Mysore Seminar

8/2/2019 Mysore Seminar

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Seminar on

Impact of Urbanization on the Diminution of Lakes

for Recreational PurposesA Case Study of Hesaraghatta Reservoir

Presented ByRekha H.V

Research ScholarDepartment of Geography,

University of Mysore

Guided ByDr. Asima Nusrath

Associate professor,Department of Geography,

University of MysoreMysore

Presented on 24th February 2012


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Introduction

Sir K Seshadri Iyyer, the then Dewan oferstwhile Mysore province thought of

providing water supply to Bangalorethrough a source of perennial characterby building a reservoir across riverArkavathi which could store three years,supply to the city. In accordance with theabove, the first scheme of protected

water supply Chamarajendra waterworks was undertaken in the year 1894,the source of supply being Hessaraghattalake on the Arkavathi river.


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The area of the lake is 1620 hectors now.The Hesaraghatta lake has a great historybehind it. When the Europeans saw it for

the first time they were really impressedwith its beauty and started hostingNational Games such as swimming,paddling, rowing, cycling, boating andfishing etc. and it is a famous shootingspot.

Recreational Activities


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Statement of the problem

1. The water availability in the tanks and reservoir are influence

2. Hydro meteorological phenomena

3. The extent of the catchment area.

4. Siltation.

5. Physical system of the catchment (Geology, structures, landform,slope, soil, and land use / land cover).

6. Because of Urbanization, Industrialization and Deforestation


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Study Area

Study area situated about 23 kms

northwest of the Bangalore City andis drained by the river Arkavathy.

The catchment extends up to

Dodballapur, A part of Devanahalli,

and North part of Bangalore North

District. The catchments cover an

area of 564.64 sq km. and is coveredin the Survey of India toposheet Nos.

57 G/7, G/8, G/11, G/12, The area lies

between 130 North latitude to 130 30

North latitude and 77o 15 to 77o 45

East longitude.


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Assessing the hydro meteorological conditions on the reservoir

Assessing the impact of urbanization on Hesraghatta reservoir

Assessing impact of reservoir on recreational activities

Objectives


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Methodology

1. Secondary data collectedthrough the variousdepartment(Meteorological,

satellite data)2. Primary data collected troughthe questionnaire and personalinterview

Data collection Analysis

1. Using statistical techniquemeteorological data and primarydata analyzed (Excel graphs)

2. Using Erdas imagine supervisedclassification and changedetection are performed

3. Drainage map created from GISsoftware


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0

500

1000

1500

2000

2500

3000

1975 1980 1985 1990 1995 2000 2005 2010 2015

RainfallinMM

Years

Hesaraghatta Rainfall data from 1981-2001

Series1

RAINFALL CONDITION OF THE STUDY AREA

Hydro Meteorological Conditions


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0

200

400

600

800

1000

1200

1400

1970 1980 1990 2000 2010 2020

Inflowi

nMCFT

Years

Inflow of Water to Hesaraghatta Tank Since 1975

Seri

TRENDS OF WATER INFLOW TO HESARAGHATTA RESERVOIR

INLETS of hesaraghatta lake : -Nandi hill-Ardeshhalli Lake Marsandra

kodatur Lake kakol Lake Hesaraghatta


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0

200

400

600

800

1000

1200

1400

1600

1980 1985 1990 1995 2000 2005

RainfallinMM

Years

Anual Rainfall of the Catchment Area

Bangalore North

Dodballapur

Devenahalli

Rainfall conditions of the study area


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0

100

200

300

400

500

600

1 2 3Series1 45.455 105 505.77

Depth of Waterin mts

Years

Depth of Water Table Below Ground Level 1980-2011

Ground Water Level

Years

Number Of

Bore Wells2000 2084

2004 4087

2008 6871

2011 11050


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Impact Of Urbanization On The River Drying

Bangalore is a fastest growing city of India. Due to the urbanization

population increased. It needs more lands for residential, industrial,

recreational purposes. For that Bangalore is loosing its Green Belt region, in

green belt region some of the educational buildings residential sectors are exist

Using statistical technique population growth rate has been calculated and

maps have been created, and in Erdas software supervised classification

technique is used to now the deforestation and urban development area in thestudy area. Primary data also used to know the changes in the ground


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Remote Sensing Analysis For Changing Landuse And Land Cover

1989 1994

1999


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Agricultural, grass, scrubs land

Settlements

Built up area

Water body

Thick vegetation

Dry land

Plantation

Impact of Urbanization

2000


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Agricultural, grass, scrubs land

Settlements

Built up area

Water body

Thick vegetation

Dry land

Plantation

2006


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Increasing land use

Decreasing land use

No change

Land use and land cover change from 2000-2006


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Changing Land use and Land cover


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INCREASING POPULATION

a. Demand for land, water

URBANIZATIONa. Demand for land, water

INDUSTRIALIZATIONa. Demand for land, water

DEFORESTATION


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IMPACT OF RESERVOIR ON RECREATIONAL ACTIVITIES

HONORING THE WINNERS IN BOAT RACE

Picnic spot for Bangalorian

Its famous shooting spot

Europeans started

swimming rowing fishing cyclingBoating


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When the reservoir is full festivals are celebratedFrom the last 7 years the villagers not celebrated the fairs because there is no water


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Total No. ofrespondents

Impact ofurbanization

Impact ofindustrialize

Impact ofdeforestation

Overexploitation ofground water

184 168 134 109 80

Most of the respondents accepted that urbanization, industrialization,exploitation of grown water and deforestation is the causes for drying of thereservoir


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Conclusiong


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Bangalore is a fastest growing city of India. Due to the urbanization, it

needs more lands for residential, industrial, recreational purposes.

Problem is more in case of surface water due to the urbanization and in

case of ground water it is over exploited and recharging is not going

properly. This leads to drying of Arkavathy River.

Without water in the reservoir most of the recreational activities stopped

Conclusiong


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Creating awareness among the public (especially, those within the catchment,on the importance of water conservation and conjunctive utilization of surface

water and groundwater;

Considering the entire catchment as conservation zone, and adopting suitableland utilization strategy there in, especially from the point of view regulating theurbanization/industrialization;

Declaring a zone of about 10 km. Radius around the Hessaraghatta reservoir

Regulating a buffer of around 2 km on either side of the streams

Recommendations

Documents

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