Whenever people in India ask for wettest / Rainiest places they only
know Cherrapunji or Mawsynaram or Agumbe. In these series, you
will come to various places which i have identified to be wettest places
of India. This series will be published every weekly. If you are fan of
Heavy Rains and want to know more than Cherrapunji. Please Read it. Its
only a compilation of data from various sources / articles / research
materials.
The Eravikulam National Park is situated in the high ranges of Southern
Western Ghats of Idukki district, Kerala, having an elevation up to 2695
mts with an average base elevation of 2000mts. The nearest town is
Munnar. The park has the highest peak in South India, Anamudi, scaling
to 2695mts and is located in this park. Rajamalai is the headquarters of
the park, and is located 16 km from Munnar. There is a motorable road
up to Rajamalai. Rajamalai is also known for its heavy rainfall. Here we
will analyze the last 10 years rainfall in Rajamalai and the data
reveal it is one of the few stations which get very heavy rainfall in
this world.
The park is represented by undulating terrain flanked on
all sides by moderate to steep slopes. The major terrain types are
slopes (low to steep), flat mountain tops and valleys (water logged and
well drained). The main body of the Park is comprised of a high rolling
plateau, with a base elevation of about 2000m. Most of the knolls and
peaks on the plateau rise 100 to 300m above it. The main plateau area is
split roughly in half from northwest to southeast by the Turner’s
Valley. The southern fringe of the Park is mostly precipitous with
broken cliffs descending from Anamudi, Umayamala and surrounding
massifs. In contrast to the sustained and extremely steep escarpment
along the eastern fringe of the Nilgiri plateau, the plateau fringe in
the Eravikulam area is generally less steep with cliffs often grading
into rock slabs with numerous brakes of grassland, shrubs or forests.
Only along the west-facing crust between Kattumalai and Kumarikkalmalai,
does the edge of the plateau resemble that of the Nilgiri plateau in
this regard. In addition, cliffs are usually not abrupt, but rounded
both horizontally and vertically. Where exposed, the rock usually has an
irregular surface with numerous small dikes and discontinuities.
Anaimudi - Tallest peak in South India - Photo - Indiareign
Etymologically, Eravikulam denotes streams and pools. Many perennial
streams criss-cross the park. They merge to form tributaries of the
Periyar river and Chalakudiyar River on the west and the east flowing
Cauvery River in Tamil Nadu. Lakkom Water falls is in this region. The Western Ghats, Anamalai Sub-Cluster, including all of Eravikulam
National Park, is a World Heritage Site. The Eravikulam ecosystem is a strange admixture
of temprature and tropical qualities due to the combined effects of
altitude as well as latitude. It is exceptionally rich in orchids and
balsams. The spectacular mass flowering of the shrub neelakurunji
(Phlebophyllum kunthianum) takes place in the grasslands in cycles of
the 12yrs. The next neelakurunji 'outburst' is due in the year 2018.
Rajamalai - Photo - Praveen Emmanuel
During the colonial days, the High Range Game Preservation Association managed the area as a Game Preserve for the erstwhile Kannadevan Hills Produce Company. The Muduvan tribals, known for theit tracking skills, were employed as game watchers. they are the original inhabitants of these hills. The area was taken over in 1971 by the Kerala Government and declared as a Sanctuary in 1975. It was upgraded to a national park in 1978 in recognition of it's unique ecological values. The planters community and the Muduvans continue their association with the protection and management of the park.
Heavy Rainfall
The climate of the Park is known as tropical montane. The
influence of altitude over tropical latitude brings about the
characteristic climate. The monsoon dominates the annual weather cycle.
The year consists of four seasons: (1) Winter, from December to
February; (2) Summer or pre-monsoon, from March to May; (3) Southwest
monsoon from June to September; and (4) Northeast monsoon, from October to November. The Park is mostly covered up in mist from June to
November. During southwest monsoon, winds are consistently from the
west and strong, at times reaching an estimated 80 km/hr. Low velocity
winds occur during northeast monsoon and in the winter season. During
February-March, dry winds blow from the east, growing stronger at times.
In Eravikulam, the data on rainfall between 2001 and 2010 are collected from the Rajamalai, Vaguvarrai and Nyamakad. More than 70% of the annual rainfall is contributed by the south-west monsoon. Summer rains occur in the months of February, March and April. The rainfall over the last 10 years and month wise rainfall data for 3 years in the nearby estates are tabulated below (Table 1 and 2). But rainfall pattern varies greatly across the Park. The average rainfall in Rajamalai in the last 10 years is around 7000 mm.
Available Rainfall data in the Eravikulam National Park in past 10 years in mm
Rajamalai is not wetter than Walakkad in Kerala but is on par with Pochippara or even better as Rajamalai crossed 9000 mm mark 3 times in last 10 years but Pochippara peak rainfall is only 8400 mm. I would rank Walakkad as the wettest place in Kerala followed by Rajamalai as the second wettest and then Pochippara.
Source: Compilation from KFRI, Wikipedia and Rainfall data from own research.
See also previous series
