Volume : 2, Issue : 4, April - 2013

A Study of Groundwater Fluctuation in Coastal Region, Valsad and Navsari District.

Aarti Avalkar, Sahita Waikhom, Dr. S. M. Yadav, Dr. P. R. Mehta

Abstract :

The objective of this paper is to study the groundwater seasonal and annual fluctuation and trend of groundwater level and its effect on groundwater level due to rainfall in coastal region Valsad and Navsari District of Gujarat State. Water level data of last 20 years of 100 wells were collected. The yearly and as per distance from sea variation of average groundwater level fluctuation is shown in graph for premonsoon, postmonsoon and annual, also groundwater level vs rainfall vs graph are draw to study their co–relation. The result shows that groundwater level shows a seasonal pattern of fluctuation. The variation of decadal average water level trend is increasing and average water level with the distance from sea shore is decreasing for Valsad district. The variation of decadal average water level trend is decreasing and average water level with the distance from sea shore is decreasing for Navsari district. When corelating average annual water level with average annual rainfall the water level is increasing with rainfall. When co–relating it with good rainfall year, the water level is high compare to good rainfall year for both districts.