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Pura Kulam

Pura Kulam

Pura Kulam has been chosen for restoration by CMWSSB as part of the Sustainable Water Mission. This pond is located on the East of Gandhi Road, opposite to ThirumoolanaatharThirukovil. The pond is irregular in shape. Sullage from the nearby housing colonies was diverted into the pond through a storm drain. Some amount of renovation work has been done in this pond quite recently and the bund has been strengthened. There were no steps, revetment, inlet or outlet available in the pond. At present, there is no specific catchment to the pond but for its own in-situ catchment.Now the pond is fully restored under the Chennai Smart City project funds.

Area, Zone, Division

AREA: 1214.058 Sq.mtrs    ZONE: 2    DIVISION: 22

Location

 

his pond is in Division 22 of Zone  3 and is located on Gandhi Road. It is located to the East of the road. The Jain Vidyalaya is to the South of the pond; The Thirumoolanaathar Thirukovil is located opposite to the pond on the other side of the road. The pond is located at North Latitude 13  9'52.79" and East Longitude 80 12'33.21"

 

 

Field Observation and Inferences

 

The pond is irregular in shape. There is water in the pond during the time of survey. Sullage from the nearby housing colonies is diverted into the pond through a storm drain. Some amount of renovation work has been done in this pond quite recently; the bund has been strengthened. There is no steps, revetment, inlet or outlet available in the pond. At present, there is no specific catchment to the pond but for its own in-situ catchment. Based on the interaction with the local community, it is inferred that the pond use to hold water all through the year and travelers used to even drink the water in the past. Also the pond water was used in the past for washing and bathing by the local community. The water in the pond is polluted and is green in colour. Based on the Total Station Survey output, it is inferred that the total area of the pond is 5834.855sq.m and the total length of the bund is 350.77m. The average depth of the pond is about 2m.

 

 

Impact of Urbanisation

 

The imagery extracted from google earth on 15.06.2010 and 01.06.2002 is presented below; no change detection could be made with the two imageries; but the water body has been severely polluted by waste water diversion.

 

Google Image of the pond as on 15.06.2010(LEFT) and 01.06.2002 (RIGHT)

Pond Storage Estimation

 

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

 

The total storage of the tank in its present condition is estimated at 11669.71 cu.m Based on this estimate, there will be water available in the pond for almost 122 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 2086.15 cu.m; the total groundwater recharge will be 1412.33 cu.m. The estimate made for an excess rainfall year is presented below :

 

 

 

 

Based on this estimate, there will be water available in the pond for 268 days. The pond in its present volume does not over flows even in an excess rainfall period for the assumed catchment. The total inflow to the tank in an excess normal rainfall year is estimated at 6048.50 cu.m; the total groundwater recharge is 2080.3 cu.m.

Proposed Interventions

 

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

  • The sullage diversion and solid waste dumping should be stopped first
  • The waste water in the pond should be dewatered and disposed.
  • The pond can be desilted and cleaned in the water spread area.
  • Bund should be strengthened; 
  • The pond should be provided with a proper fence with a gate.