The single fact that explains most of what is wrong and most of what is interesting about Akkulam is that it is not an independent lake. It is one node on a canal, and the canal has a name and a date.
Parvathy Puthanar
The Parvathy Puthanar — literally the new channel of Parvathy — is named for Rani Parvathi Bai, the regent queen of Travancore during whose rule it was cut. It begins at the Kadinamkulam lake to the north, runs south-east parallel to the Thiruvananthapuram coast, threading the lagoons behind the shore, and finishes in a small delta near Poonthura where it meets the Arabian Sea.
The purpose was the same one that produced every Travancore canal. This coast has almost no natural harbours and a surf that makes beach landing dangerous for months at a time, but it has a nearly continuous string of shallow lagoons sitting a few hundred metres inland, separated from the ocean by sand. A kingdom moving coir, rice, cashew, timber and stone up and down its own length could either fight the sea or dig behind it. It dug.
What a working canal did to Akkulam
The effect on Akkulam was to convert a backwater arm into a junction. Country boats moving along the Parvathy Puthanar passed the mouth of the Akkulam–Veli system; goods and people moved between the canal and the villages behind it; and the lake became part of the ordinary economic geography of the capital rather than a scenic edge to it.
It is worth pausing on how thoroughly that has been forgotten. A visitor today reads Akkulam as leisure infrastructure — a DTPC tourist village opened in the early 1980s, a boat club running since 1989, playgrounds and pools and, latterly, an adventure park and an Air Force museum. All of that sits on top of a piece of transport network that was two centuries old before the first pedal boat arrived.
The same connection, running the other way
A canal system is indifferent to what it carries. The network that brought freight to Akkulam is the network that now brings the city’s drainage to it, and the lake’s position — landward end, single distant outlet at Veli — means what arrives tends to stay.
The Parvathy Puthanar itself is in poor condition along much of its length, weed-choked and effluent-laden, and large stretches are simply not navigable. A ₹80 crore development plan for it was announced in 2017. The history of such plans in this system is not encouraging, which is the honest context for any statement that Akkulam is about to be restored: the lake cannot be fixed as a lake, because it is not one.
And then it was reconnected
The unexpected coda is that the old logic won. On 26 February 2026 the Akkulam–Chettuva waterway opened — 280 km of continuous navigation from this lake north to Thrissur district, delivered by Kerala Waterways Infrastructure Limited at a sanctioned cost of about ₹2,556 crore, and the first phase of a 616 km corridor intended to run from Kovalam to Bekal.
The reasoning is almost word for word the nineteenth-century reasoning, updated for lorries instead of surf: the state is long and thin, its roads are saturated, and freight moved on water is cheaper and cleaner per tonne-kilometre than freight moved on tarmac. Two hundred years after Parvathi Bai’s cut, Kerala has decided that the queen was right.
How to see it on the ground
Stand on the Akkulam footbridge and look north-west, the direction the water leaves in. There is nothing dramatic to see — a wide green sheet, coconut on both banks, hyacinth mats moving slowly with the tide. But that is the line. Follow it far enough and it passes through a hill at Varkala in a hand-cut Victorian tunnel and comes out in Thrissur.
It is a considerably better thing to know while eating an ice cream at a municipal boating jetty than the alternative, which is that this is a nice enough pond with a water problem.
Frequently asked questions
Who was the Parvathy Puthanar canal named after?
Rani Parvathi Bai, the regent queen of Travancore during whose rule the canal was cut. Puthanar means new channel — the Parvathy Puthanar is, literally, Parvathy’s new cut.
Where does the canal run?
From the Kadinamkulam lake in the north, south-east and parallel to the Thiruvananthapuram coastline, linking the lagoons behind the shore, and ending in a small delta near Poonthura where it reaches the Arabian Sea.
Is the Parvathy Puthanar still navigable?
Only in parts. Much of its length is choked with weed and carries heavy effluent, and long stretches are not usable by boats. A ₹80 crore development scheme for the canal was announced in 2017, and the much larger 2026 waterway project addresses the wider chain it belongs to.
What does the canal have to do with Akkulam’s water quality?
Everything. Akkulam sits at the landward end of a connected system whose only sea outlet is at Veli, so the canal network delivers the catchment’s drainage to it and the lake exports very little. Its pollution problem is a consequence of its position on the network, not of anything happening in the lake itself.
How old is the tourist village at Akkulam?
The District Tourism Promotion Council developed it from the early 1980s, and the boat club has been running row, pedal and safari boats since 1989. The pools, cycling park, adventure park and Air Force museum were added over the following decades.
Why did Travancore build canals rather than use the sea?
Because the Kerala coast has almost no natural harbours and heavy surf makes open-beach landing dangerous for much of the year. Moving goods through the sheltered lagoons a few hundred metres inland was simply safer and more reliable than moving them along the coast.