Bhoothathankettu Dam

Bhoothathankettu Dam belongs under Thattekkad, one of the practical travel bases in Ernakulam district. Use Thattekkad for stays, food, local transport and operators, then plan this place as a focused stop rather than an isolated pin.

The story of Bhoothathankettu Dam

What you actually visit is a reservoir, a barrage and a stretch of forest river. There is a DTPC boat jetty near the dam running roughly hour-long motorboat trips, extendable if you ask; there are forest walks along the bank; and there is a children’s park, which tells you plainly that this is a Kerala family picnic spot as much as a wilderness site.

The setting is the real draw. This is the western edge of the Thattekkad forest belt, so the birdlife on the water and in the riverside trees is well above what a dam visit normally offers — it is a short drive from the Salim Ali sanctuary and shares its habitat.

Go early. The light on the reservoir is best in the first hours, the boats are less crowded, and by late morning in the dry months it gets hot on open water with no shade.

Do not confuse this with a hill station or a trek. The walking here is gentle and short; the trip is a boat, a barrage, a view and a picnic, and it fits comfortably into half a day from Kochi or a morning from Thattekkad.

One thing worth knowing before you set out: this is not a hill station, not a trek and not a wildlife safari, and treating it as any of those guarantees a flat afternoon. The walking is gentle and short, and there is no big-animal spectacle. What there is instead is a barrage, a reservoir, a boulder field with a five-hundred-year-old legend attached to it, an unusually good bird list for a dam, and a couple of hours of genuine quiet on the water — which is a better half-day than most things within an hour of Kochi.

Boat only with the authorised operators at the jetty. The Periyar is a dammed river and its level is managed, which means it can change without warning.

Look at the far bank while you are on the water, because the reservoir has a second name that explains what you are seeing. It is also called the Thattekad reservoir, and the forest edge on the other side is the boundary of the Salim Ali sanctuary. That treeline is not where the forest naturally ended. Filling this reservoir in 1964 raised the water along that bank by something in the order of six to ten metres, and the riverine woodland that had grown along the Periyar there went under. What you are boating across is, in part, the floor of the forest the sanctuary was created to protect.

Legend & myth

The legend is specific, which is what makes it good. Bhoothams — demons, spirits — set out to dam the Periyar in order to flood the country upstream and submerge the Shiva temple at Thrikkariyoor. They worked at night, because the work had to be finished before dawn.

Shiva, seeing what they were at, faked the sunrise: a rooster crowed in the dark. The demons believed the night was over, abandoned the half-built dam where it stood, and fled. The boulders strewn across the river below the barrage are, in this telling, the work they left behind.

It is a very old kind of story — an unfinished monument explained by a trick played on its builders — and Kerala tells it with a straight face and a rooster.

The unromantic version has evidence behind it. Records point to a major Periyar flood in the mid-fourteenth century as what actually moved those boulders into the river. We publish both because the flood explanation does not make the legend less interesting; it makes it a story people told about a real event they had lived through.

The Thrikkariyoor temple in the legend is a real temple, a few kilometres away, still standing and still in worship. The story ties the two places together on the ground.

The demons are not the last people said to have interfered with this spot, and the second story is documented. In 1790, with Tipu Sultan’s army advancing on Travancore, a Travancore party is recorded as having breached the natural barrier here to put the Periyar in his way — using the river as a weapon in the same place the bhoothams were supposed to have been damming it. Whatever the tactical effect, the coincidence is a good one: the rock jam has been broken deliberately at least once in recorded history, which is exactly what the legend says the demons failed to finish.

So the barrage you are looking at is the third thing to occupy this stretch of river. First the boulders, explained by a rooster. Then a war. Then, from 1956, the Periyar Valley Irrigation Project, whose fourteen shutters now control salt intrusion and supply Greater Kochi with drinking water. It is a very ordinary-looking piece of infrastructure standing on a genuinely eventful piece of ground.

The flood behind the legend deserves its own name, because it is the most consequential thing that ever happened on this river and almost nobody standing here knows it happened at all. It is dated to 1341, and what it did downstream was not local. Silt carried off the Western Ghats by the swollen Periyar choked the ancient port at Muziris — Kodungallur by then — and put it out of business permanently. The river cut itself a new mouth to the sea. The material it dumped along the coast built new land, including the long bar that is now Vypin island and the deposits around Panangad and Kumbalam. And the sheltered water behind that new bar became the harbour that made Kochi.

That is the same event credited, in the story told here, with rolling the boulders into the Periyar below this barrage. One flood, one river: a port destroyed at one end of it and a port created a few kilometres south, and a rock jam left in the bed a day's travel inland. Kerala remembers the inland half as demons and the coastal half as a calendar.

The calendar is not a figure of speech. There is no surviving eyewitness account of the 1341 flood — no chronicle, no letter, nothing written at the time — and historians are careful to say so. What there is instead is a dating system: the Puthuvype Era, the Era of the New Deposit, which counts its years from 1341 because that is when the new land appeared. People did not write down the disaster. They started counting from it, and were still using that count centuries later. When a page like this says the boulders were moved by a fourteenth-century flood, that is the evidence underneath the sentence.