AREA: 2023.43 Sq.mtrs    ZONE: 3    DIVISION: 30

This pond is in Division 30 of Zone  3 and is located on the Madhavaram Redhills Road. It is located to the west of the road. The pond is located at North Latitude 13 8' 48.29"and East Longitude 80 13' 51.96" .

The pond is irregular in shape. The area around the pond is fully urbanized. The pond is under severe destruction. It is dumped with solid waste extensively. The liquid waste fro the surrounding houses have been diverted into the pond. The bund of the pond is fully encroached. Infact there is no proper approach into the pond but for the narrow lanes. There is water in the pond during the time of survey but is basically the waste water diverted from the neighboring households. The pond has no steps, revetment, inlet or outlet. The soil is sandy in texture favouring good percolation of the stored water. The water spread area is infested with water hyacinth and bushes. Shallow water table exists in the area. Shallow wells and borewells are the common groundwater extraction structures in the area. The community feels that the pond act as a major recharge source to their wells and borewells. Based on Total Station Survey output, the extent of the pond is 1986.751 sq.m and the total length of the bund is 180m. The average depth of the pond is about 3m.

The actual volume stored in the tank during 1987  a normal rainfall year - after losses due to evaporation and recharge is given in the following graph

he total storage of the tank in its present condition is estimated at 5960.253 cu.m Based on this estimate, there will be water available in the pond for almost 137 days in a year. At no point of time, the pond overflows in a normal rainfall year. The total inflow to the tank in a normal rainfall year is estimated at 24761.69 cu.m; the total groundwater recharge will be 2242.25 cu.m.

Based on the field observations and inferences, followed by the data analysis, following were the list of activities proposed for renovating the Pond.

• The community need to be sensitized first on the importance of water body and their role in sustaining the groundwater sources in the area.
• Further encroachment should be checked first by erecting a fencing around the water body.
• Temporary and semi permanent structures erected on the bund and water body should be removed and cleared.
• Dumping of solid waste should be stopped with immediate effect with a sigh board warning on the polluters / violators with serious consequences.
• Sullage and sewage diversion should be stopped. The sullage can be diverted to the UGD system wherever possible. At the house hold level it has to be arrested by introducing soak pits.
• The existing water should be dewatered and disposed.
• The pond should be desilted and cleaned.

  After  completing the above tasks it is better to retain the water body as such for 1 year, after which the water body can be converted into a water harvesting and recharge system. Introducing recharge system at this stage would lead to the pollution of groundwater and hence it is not recommended.  Bund formation, provision of revetment and steps can be considered at later stage as the pond cannot be brought into immediate use in its present condition.