Mullaperyiar dam
  
Mullaperyiar dam was built by Britsh in 1895. It stands on Peryiar river whose flow orginates from Thekkady.The dam was built mainly for watering the paddy fields of Tamil Nadu perenially drought - prone. Even though the dam is now in Kerala, most of the water in the reservoir is still released to Tamil Nadu and is cause for considerable political tensions between the two states.The dam is 175 feet tall in hight and is 5704 feet long.

Idukki Arch Dam
 
This is the world's second and Asia's first arch dam constructed across the Kuravan and Kurathi hills. 550 ft. high and 650 ft. wide, the dam lies close to the Cheruthoni barrage. To its west is the Kulamavu Dam. Idukki Wildlife Sanctuary is located close by.
  
Cheruthoni 
 
Cheruthoni is the area around the Idukki and Cherithoni dams, near Painavu, the headquartaers of Idukki district, Situated 3917 feet above sea level, on a clear day one can see certain parts of faraway Cochin. You can reach Cheruthoni only by jeep. The Kerala State Electricity Board (KSEB), which looks after the dams, rents out boats for the two-hour cruise between Cheruthoni and Kulamavu.
 
Bhoothathan Kettu Dam
 
Kothamangalam, situated 63kms from Ernakulam, 'Bhoothathan Kettu' is a good picnic spot. There is a dam here and in the reservoir one can go for boating too. The legend says that the dam was built by a "Bhootham" using the rocks, which is the ample proof for the name. Trekking through the forest to the old Bhoothathan Kettu is very interesting. The forest offers a wide variety of flora and fauna and is a botanist delight.
 
Thattekad which is 20kms from Koithamangalam is the home for the bird sanctuary where we can find some of the rare species of birds. Exotic birds flock in the sanctuary and make this place a heaven for any ornithologist.
 
Kakkayam - 45 km from Kozhikode.
 
This picturesque damsite, teeming with exotic wildlife, offers excellent trekking and rock climbing opportunities. The best time to visit is between November and April. 
 
Peruvannamuzhi - 60 km from Kozhikode.
 
The Peruvannamuzhi damsite set amid hills is a beautiful picnic spot. The reservoir here provides facilities for speed and row boat cruises during which one can see the Smarakathottam - a garden built in memory of the freedom fighters of the region. Uninhabited islands, the bird sanctuary and a crocodile farm add to the charm of the place. 
  
Malampuzha - 10 km from Palakkad.
 
This famous picnic spot which comprises dam and beautifully landscaped gardens, is situated on the lower hills of the Western Ghats. There are frequent buses to this place from Palakkad.
  
Meenkara - 32 km from Palakkad.
 
This picnic spot is the site of a dam across the river Gayathri which flows into the Bharathapuzha.
 
Mangalam Dam - 50 km from Palakkad 
 
This dam is built across the Cherukunnath River, a tributary of the Mangalam River. The dam site is a popular picnic spot.

Peechi dam - 20 km east of Thrissur.
 
This picnic spot offers boating facilities. There are frequent private buses from Thrissur to Peechi dam 
  
Thenmala - 66 km east of Kollam.
 
The area is covered by dense forest, rubber and tea plantations. An Eco Tourism Development Project is under implementation here. Thenmala is also a dam site. 
 
Maniyar - 20km from Pathanamthitta.
 
This is a beautiful dam site. Seethathode: The Kerala State Electricity Board has a power generating station here. 
 
Moozhiyar - 57 kms from Pathanamthitta.
 
This is an enchanting dam site Pathanamthitta town: This is the district headquarters. The town is a land of religious and cultural harmony, where a number of churches, temples and mosques can be found close to each other. The annual Chandanakudam festival at the mosque in the heart of the town is a major event.