Alternative long term durable coastal protection methods for a moderately eroding Odisha coast

The east coast of Odisha is continuously exposed to severe cyclonic storms and rough weather during the southwest monsoon. The beach near the Gopalpur has been prone to severe erosion for the past two decades. The shoreline erosion is 5m per decade. The average beach slope of 1:10 is recorded between HTL and LTL. The beach slope varies from 1:10 (non-monsoon) to 1:6 ( monsoon). The beach steepness is classified under a moderate slope. The beach sediments are of medium to coarse sand with a mixture of rare earth soil particles. The rare earth particles are heavier by their specific gravity and remain retained. The fine sediments are removed by the wave breaking at the nearshore. The mode of erosion is a cross shore erosion that happens due to beach slope, sea bed friction, and the nonavailability of beachfront for wave breaking. This paper discusses the design details, stability analysis using Plaxis, scour depth estimate, cost estimate, etc.