Ganga Basin Analysis for flood and Drought using CHyM model

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Presentation transcript:

Ganga Basin Analysis for flood and Drought using CHyM model First of all, I md saquib, my research area include, in this pre. Md Saquib Saharwardi & Saadi Zulfaqar

The third largest river in the world by discharge! Introduction The third largest river in the world by discharge! The Ganga basin outspreads in India, Tibet , Nepal and Bangladesh (10,86,000 Sq.km.) 26% of the total geographical area of India. Length- 2525 km Average annual rainfall- 110 Cm

Objectives To compare the drought and flood year using model parameters. To analyze the performance of model for simulating Ganga basin.

Data PERSIANN ERA- Interim RegCM

Static Fields

Slope and Velocity

Water Available for run-off (JJAS) JUNE JULY AUGUST SEPTEMBER

Water Available for run-off (JJAS) MODEL OBSERVATION

Total Water Content(JJAS)

Case Study 1988 – Flood 2002– Drought Flood Drought ±1000 death toll. ±9,000 affected villages and towns. ±100,000 evacuated. Drought Third largest drought in 100 years. 56% below normal rainfall = July. Two-thirds districts = Poor rainfall.

Summer Monsoon Season (JJAS) Temperature DROUGHT FLOOD

Rain Input in JJAS Season DROUGHT FLOOD

Summary Model static fields performed well over Ganga Basin. Model is able to differentiate between Observation (PERSIANN) and Model (RegCM) data for various parameters. Model diffrentiated well drought and flood year.

TERIMA KASIH धन्यवाद