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Topography

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Topography and Climate

Geographical features, climate, water resources and soil characteristics of Thamarassery Grama Panchayat

🏔️ Topography

Thamarassery, which was part of the old Malabar district, was formed as a panchayat during 1936–37. Half a century ago, the hills, valleys, and riverbanks of the panchayat were inhabited by wild animals.

Even before the formation of Kerala state, the intervention of settlers from erstwhile Travancore transformed the region into an agricultural hub. Along with settlers from Travancore, people from the Eranad and Valluvanad taluks also came to work and live here.

Simultaneously, the commercial sector flourished, driven by Thamarassery's geographical location and transport facilities. Located to the west of the Western Ghats, the panchayat is home to approximately 40,000 residents.

🌾 Agricultural Landscape The plains, including the foothills of small hills, were once extensively cultivated with paddy. Most paddy fields have since transitioned into vegetable farming plots.

On the drylands, coconut, areca nut, rubber, and black pepper are cultivated. Generally enjoying a moderate climate, Thamarassery Panchayat also includes four small watersheds.

🌦️ Climate

60% Southwest Monsoon Rainfall
Jun–Sep Southwest Monsoon
Oct–Dec Northeast Monsoon
38°C Approx. Maximum

From June to September, the Southwest Monsoon provides 60% of the total rainfall. The Northeast Monsoon (Tulavarsam) also brings rainfall from October to December.

🌧️ Seasonal Variation However, the weather occasionally fails. It is a sad truth that during the recent June–July months, not a single drop of rain fell during the usually non-stop raining 'Thiruvathira Njattuvela'.

The coldest months are December and January, with temperatures dropping below 27°C. Up until March, temperatures can rise to around 38°C.

Except for a minor drop in rainfall availability, records show that there has been no significant climate shift here in the past century.

💧 Water Resources

Thamarassery Grama Panchayat is bordered by the Iruthullipuzha river on the east and the Poonoor river on the west. Additionally, numerous streams and watersheds make Thamarassery rich in water resources.

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Governing bodies have always prioritized developing and implementing projects to conserve rivers in their natural state, thereby sustaining dependent drinking water schemes and wells.
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Near the Ambalamukku region along the Iruthullipuzha river, shade trees have been planted across nearly 20 acres.
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Soil-conserving plants like bamboo are planted on riverbanks to support riverbank protection.
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Clearing mud sandbars and fallen trees that obstruct water flow is also actively undertaken.

Ponds were once key water reservoirs throughout the region, but many have collapsed or filled up. People primarily rely on wells for water, and households without a private well are rare.

🌱 Soil Types

The plains surrounding the foothills were once vast paddy fields. Laterite soil, alluvial soil, and sandy soil are the primary types found here, offering high fertility.

🟤 Laterite Soil
🌾 Alluvial Soil
🏖️ Sandy Soil
💧 Water Availability Water scarcity occurs in elevated areas, whereas natural springs that never dry up even during harsh summers exist in certain hilly regions.

Many former paddy fields have been reclaimed today for cash crop cultivation and building construction.

Thamarassery – A Landscape of Hills, Rivers, Agriculture and Biodiversity
The geographical setting, river systems, agricultural lands and diverse soil characteristics together form the unique natural landscape of Thamarassery Grama Panchayat.