Water Clarity Treatment in Freshwater Lake

Freshwater Pond Treatment: 3 Acres, 20 Feet Deep

Maintaining good water clarity in freshwater ponds can be challenging, especially during the warmer spring and summer months.

Rising water temperatures and increased nutrient availability can promote excessive algae growth, which may increase suspended solids and reduce overall pond water quality.

Using Bioaugmentation to Support Pond Water Quality

Bioaugmentation can be used to help manage excess organic matter and support healthier biological conditions in freshwater ponds.

Introducing diverse populations of beneficial bacteria can increase the biological breakdown of organic material that accumulates on the pond bottom.

Reducing this organic material may help:

  • Improve water clarity
  • Reduce nutrient availability
  • Support healthier microbial communities
  • Manage excessive algae growth
  • Improve overall freshwater pond conditions

The following case study describes the use of a biologically diverse microbial treatment in a 3-acre freshwater pond with a depth of approximately 20 feet.

The treatment program focused on reducing accumulated organic matter and supporting a healthier balance between bacterial activity, nutrient availability, and algae growth.

Figure 1. Freshwater lake in Oregon park before ProBiotic Scrubber® bioaugmentation.

Freshwater Lake Restoration and Water Clarity Improvement

A 3-acre freshwater lake in a public park in Oregon was originally a spring-fed watering hole used for cattle on land owned by William S. Ladd, a former mayor of the area.

In 1911, the spring and surrounding property were sold to the city and converted into a public park. The surface area and depth of the original watering hole were later expanded to support recreational use.

Over time, the park gained recognition for its beauty and was eventually listed on the National Register of Historic Places.

Seasonal Algae and Water Clarity Problems

Despite its recreational and historic importance, the freshwater lake experienced ongoing problems with year-round water clarity.

Organic matter had accumulated on the bottom of the lake. During seasonal lake turnover, nutrients stored within this material could become redistributed throughout the water column.

These nutrients provided conditions that supported increased algae and cyanobacteria growth during warmer months.

Maintaining good water clarity was especially important because of the lake's recreational use and its visual importance within the public park.

Addressing Cyanobacteria and Nutrient Loading

The lake also experienced the presence of potentially harmful cyanobacteria.

Some cyanobacterial species can produce toxins that may pose health risks to people and animals. Park management therefore wanted to improve both water clarity and overall lake conditions.

BioLynceus® biological treatment was introduced to help reduce accumulated organic material at the bottom of the lake and manage nutrient loading associated with that material.

Using ProBiotic Scrubber® for Lake Bioaugmentation

Weekly applications of BioLynceus® ProBiotic Scrubber® were added to the lake as part of the treatment program.

The goal was to increase biological activity and support the decomposition of accumulated organic bottom solids.

To measure changes in sediment depth, water-height profiling was performed at 44 locations throughout the lake.

Measurements were collected:

  • Before bioaugmentation began
  • After four months of treatment
  • After 12.5 months of treatment

Water-depth measurements were adjusted to account for changes in overall lake water level between sampling dates.

Organic Solids Reduced During Treatment

During the first four months of treatment, accumulated organic material at the bottom of the lake decreased by an average of 6.5 inches.

Over the following eight and a half months, an additional average reduction of approximately 15 inches was measured.

After 12.5 months of treatment, the lake showed an average total reduction of approximately 21.5 inches of organic bottom solids across the monitored locations.

Supporting Freshwater Lake Clarity

Reducing accumulated organic material can help decrease internal nutrient loading and improve conditions within freshwater lakes and ponds.

In this case study, BioLynceus® treatment was associated with measurable reductions in organic bottom solids while supporting the lake's water quality management goals.

BioLynceus® ProBiotic Scrubber® is designed to support freshwater clarity, organic solids reduction, nutrient management, and healthier biological conditions in lakes and ponds.