BATHYMETRIC ANALYSIS SHOWS PROGRESS OVER TIME – RESULTING IN MORE DEPTH TO YOUR LAKE

Bathymetric analysis is a technique that allows us to accurately measure the depth profile of a water body and create detailed depth charts with specific contours.

We use this information to calculate water volume and determine the aquatic plant biovolume in a water body.

Conducting bathymetric analysis over time enables us to measure changes in these parameters and interpret them to adapt and reoptimize lake management plans, bioaugmentation dosing regimens, and RADOR system performance in line with these changes.

2017 vs 2019 Bathymetric Scans

Nearly 2 feet of depth added in just 2 years

Eliminating hypoxia and deoxygenation is a critical factor in reversing eutrophication and restoring water quality.

Although determining the depth at which hypoxia starts provides some insight, bathymetric data delivers a more comprehensive understanding of the problem and enables us to calculate the volume of water and the surface area of sediment that are hypoxic.

This information fuels the design stage by providing valuable insights into how advanced the eutrophication process is and helps inform the development of an appropriate bioaugmentation dosing program.

Many companies dose treatments according to surface area, but that limited perspective can hinder the treatment’s effectiveness. For example, a deep lake can have several times the water volume of a shallow lake with the same surface area, which should be taken into account when determining dosing rates.

We use sophisticated sonar scanning equipment to collect bathymetric data. Once the data is collected, we perform a variety of calculations and analyses using various algorithms to allow comparisons and inform decision-making.

Studying the bathymetric data of a lake can provide a wealth of information:

1. Changes in depth contours: Analyzing changes in depth contours over time enables us to calculate the increase in the area encompassed by a specific depth contour (e.g., 15 feet) and compare it to previous measurements.

2. Water volume and sediment reduction: Bathymetric data allows us to calculate the increase in total water volume and the reduction in organic sediment achieved through Bio-Dredging.
This information informs future dosing rates and locations for enzymatic treatments.

3. Hypoxic and anoxic water volume: Calculating the total volume of water that is hypoxic or anoxic and the total surface area of the bottom covered by hypoxic water presents a clear picture of the extent of the problem.

4. Aquatic plant biovolume: Bathymetric scans provide insight into the vegetative biovolume of aquatic plants in a lake, which enables us to measure the reduction in invasive weeds achieved over time.

In summary, detailed bathymetric scans and analysis are critical tools for understanding lake conditions, measuring the achievements of a Lake Management Action Plan, and informing adaptive management strategies for the future.

By simplifying the science behind bathymetric analysis and explaining its importance in the context of eutrophication reversal, we help stakeholders better understand the complexity of lake management and the value of data-driven decision-making.

Engaging with lake associations, property owners, and local authorities in a clear and accessible manner about the role of bathymetric analysis in lake restoration efforts can foster a deeper appreciation for the scientific process and encourage support for comprehensive, evidence-based solutions.

By demystifying the technical aspects of bathymetric analysis and highlighting its practical applications, we can empower communities to take an active role in the stewardship of their cherished water bodies, ensuring their health and resilience for generations to come.