The existing drainage condition of Nagapattinam consists of natural river and man – made drainage system (storm water open drains). Due to the nature terrain condition, all the man – made storm water drains are connected with natural river system Nagapattinam River.
Existing Status
| Drain Type | Length (km) | Percentage Coverage(%) |
| Open Pucca/Surfaced |
58.94 |
40 |
| Kutcha/Untines | 3.20 | 2 |
| Total drains (km) |
62.14 |
42 |
| No. of drainage facilities | 28.1 | 28.68 |
| Total road length (km) |
148.594 |
100.00 |
The information provided in the above table indicates that nearly 100% of road were provided with storm water drain.