The Nilgiris Water


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Denad

General narrative criteria:

This wetland is within the management of the community & is almost semi protected from but chances of pollution from the chemicals & pesticides from the tea fields surrounding the wetland exists. It is located about 1741 m above sea level, the perimeter being 0.2244km & the area of the swamp is about 0.7974acres. The people have planted Salix Spps within the wetland area knowing it will enhance the water retention capacity. There is a temple beside the wetland. The main source for the wetland is springs.

Biological and botanical condition:

The vegetation of this wetland is marshy type. Dominated by the grass like Seemai karakai, Anai karakai, Cyperus digitatus, Pycreus sp., Kyllinga sp., Eriocaulon sp. Between the grass were herbs like Polygonum,Viola, Hydrocoyle, Centella, Rorippa, Limnophila heterophylla, Limnophila indica, Drynaria cordata, Stellaria media. Sapling of Solanum xanthocarpum, Cassia, Eupatorium glangulosum saplings, Sigesbeckia, Phytolocca were also found in the wetland. Trees species like Salix tetrasperma, Eleocarpus were seen in the wetland. Sapling of Salix was also planted by the village community.

Life forms like water boatman, water spiders etc were present in the wetland. The water is soft & the fluoride content is low & presence of coliform is high.

 

Denad drinking water

Permissible limits

Observed value

pH

6.5-8.5

6.5

Temperature (0C)

10

18

Coliform

Nil

Yes

Fluoride

1.0 (max)

0.6

Residual Chloride (mg/l)

0.2

<0.2

Phosphorous (mg/l)


<1.0

Iron (mg/l)

0.3

1

Hardness (mg/l)

300-600

40

Chlorides (mg/l)

250-1000

886.25

Ammonia

1.5

<1.0

Turbidity(NTU)

less than 5-10

10

Remark

soft water,low fluoride content

 


 

Threats:

Washing of clothes in the upper region where the source for the wetland originates also pollutes the water. Grazing is also present.

 


 

 

 

 

Posted by: keystone       Category: NHW Home > Wetlands       Updated: 2007-03-08 01:52:25
 

 

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