Being on the north-east of the Malaysian peninsular, Kelantan is exposed to the North-Easterly wind which normally brings heavy rains in the month on November until February. Flooding is quite normal during this period.
Two key points where the level of flooding is measured would be at Tangga Krai in Kuala Krai and Tambatan DiRaja in Kota Bharu.
According to Wikipedia, Tangga Krai or formerly known as Tangga Bradley was built in 1927 until 1929. It has 79 steps and is the first indicator of flooding since it is located towards the south of the state. Normally, water from the remote areas of Kelantan would flow north, towards Kota Bahru on its way to the South China Sea.
It was quite ironic that I visited Tangga Krai because I had to kill time in Kuala Krai as there was a flesh flood preventing me to proceed with my journey to Kota Bharu. It was not only after 12 hours that the water receded and my journey was continued.
Tambatan DiRaja is located within the tourist belt of Kota Bharu. It used to be the pier where the Sultan of Kelantan would be watching water events, normally held to celebrate his birthday. During the flooding season, people in Kota Bahru would be watching the water level at this pier to have the understanding of the level of flood.
