gis presentation 2

8/2/2019 Gis Presentation 2

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STUDY ON

DEPLETION OF WATER LEVELS INMUDASARLOVA RESERVOIR,VSP,A.P

USING GIS &RS TECHNIQUES

byShaik Syed, Sai Krishna,Rajesh.kp


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Mudasarlova reservoir map

Fig 1. Map showing the reservoir with road network


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Fig2.showing

the satellite

image of the

Mudasarlovareservoir


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Objectives of study :

The present study using R.S & GIS technology

to clearly identify the water bodies, depletion

of water levels in catchment area.

To perform if then analysis and to find theamount of volume changes in the inflow.

To suggest some measures to improve the

water levels in reservoir area.To assess the effect of variation in the

discharge to the d/s of the reservoir.


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Geographical location.

Mudasarlova is a large water tank located at a

distance of 5 km from (vsp).

Mudasarlova Cheruvu which is fed by the

springs originating from Kambalakonda andKailasa Hill Ranges.

Area under study covers 17.38 sq.kms lies

between1745N to 17 4730N latitudes and83 15E to 83 20E longitudes falling in survey

of India toposheet numbers 65 0/1 and 0/2 on

1:25,000 scale.


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Identifying the problem:

Major drains of the reservoir were disturbed,because of the extensive road network.

Location of the habitations surrounding the

reservoir

Drastic changes in the topography, rainfall

fluctuations.

The present yield from this source is 0.4 MGD, but

required demand of water is 300 MLD.

Silting of the reservoir.


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Data used:

1) Geographical location of reservoir(toposheet ).2) Total no of reservoirs.

3) Total water demand of Visakhapatnam city.

a. Inflow-outflow.

b. Quantity of water supplied to treatment plant.4)Population &water demand for domestic

&industrial purpose(2008-2038).

5) Rainfall details.

6) Water levels of the reservoir, catchment area.

7) SRTM (shuttle remote techno-Machine) data.

8) Climate data, population growth


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Proposed Methodology

1) Base map preparation(Geo referencing).

1) Digitization.

1) Digital elevation model.

2) Three dimensional view.


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Methodology

1) Base map preparation(Geo referencing).projection system(lat/long,UTM WGS84)

ground control points(GCP)

2) Digitization.

Thematic maps of the study area such as road network,drainage network, contour map, watershed boundary were

prepared using open jump.

2) Digital elevation model.(SRTM data wasdownloaded and projection system was converted)

3) Three dimensional view.


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Results and discussions


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Contour map of the study area


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Base map of the study area


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Drainage map of the study area


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Road network in the study area


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FCC(false color composite) of the

study area


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DEM of the study area


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DEM of the study area


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DEM with channel network(2007)of

the study area


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DEM with sub-basins of the study

area


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Slope of the study area


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3 Dimensional view of the study area


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3 dimensional view with FCC overlayed

on the Dem of the study area


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conclusions :

The water bodies have been decreased to due toMudasarlova Reservoir according to the satellite data. This

surface data has been proven to be very informative and

useful for surface study, especially in detecting surface

features and characteristics such as lineaments and land use.

Mudasarlova Reservoir was constructed for making water

supply to Visakhapatnam Municipality. At present 0.4 million

gallons per day water is being drawn from the reservoir to

Visakhapatnam Municipal Corporation.

Forest area was reduced and area of the scrubs wasincreased.


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Thank you

gis presentation 2

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