Nirdhwani Technology

Sediment Classification and Field Experiments at Khadakwasla Lake

Project Overview

The Khadakwasla Lake Project is a pioneering initiative by the Maritime Research Center (MRC) that focuses on understanding underwater channel characteristics and sediment classification in tropical shallow freshwater systems. Located near Pune, the Khadakwasla Lake provided an ideal site for this field research, given its complex seasonal variations and significance as a local water source.

This project aims to address critical gaps in underwater acoustics and sustainable freshwater management. By integrating advanced technology with academic research, MRC is setting new benchmarks for underwater studies in India and contributing valuable data for researchers and policymakers alike.

khadakwasla-img-4

Objectives & Significance

This research project was designed with clear goals to advance both science and policy.​
  • ✅ To statistically characterize the underwater channel of a tropical shallow lake.

  • ✅ To study how physical factors like temperature, salinity, and pressure affect acoustic propagation underwater.

  • ✅ To validate theoretical models through extensive field experiments.

  • ✅ To set a new benchmark for freshwater research and policy implementation in India.

The insights from this project will aid in better freshwater management, digital transformation, and governance for tropical water bodies.

Core Research Highlights

Underwater acoustics has undergone significant advancements over the past century. This project explores:

  • Acoustic Propagation

    Understanding how underwater sound travels, affected by seasonal and random thermal stratification.

  • Sound Speed Profile (SSP)

    Studying how temperature variations distort the echoes received from the lake bed and surface.

  • Sediment Classification

    Analyzing sediment types through sonar and sampling, helping manage siltation and water quality.

khadakwasla-img-3

Field Experiments & Workshop

A vital aspect of the project was its extensive fieldwork and training component. In October 2017, MRC organized a comprehensive workshop at Khadakwasla Lake, bringing together over 25 researchers, PhD scholars, postgraduate students, and young professionals from various institutions.

Participants conducted real-time experiments using advanced instruments, including:

  • 🔍 Side Scan Sonar

  • 🔍 Single Beam Sonar

  • 🔍 Sub-Bottom Profiler

  • 🔍 CTD Probe

These tools helped map underwater parameters, study sediment layers, and demonstrate practical sonar deployment. The workshop offered invaluable hands-on experience and fostered a culture of collaborative learning.

Outcomes & Future Roadmap

Over its three-year duration, the project generated invaluable data sets that have already supported the research work of multiple PhD scholars, postgraduate students, and interns at MRC. It has established a new benchmark for conducting large-scale freshwater field experiments in India.

Looking ahead, MRC aims to:

🎯 Expand similar studies to other tropical water bodies.

🎯 Share insights with policymakers for sustainable water management.

🎯 Develop tools to monitor and simulate underwater channels efficiently.

Collaborators & Support

The success of the Khadakwasla Lake Project is a testament to strong collaboration between multiple stakeholders:

Project lead and organizer.
Provided full funding under their CSR initiative.
Supported the research fund.
Offered boats and crew for field operations.