Shoreline of Lake Okeechobee

Understanding the Problem

The Issue

Why muck removal is critical to restoring Lake Okeechobee

What Is Muck?

Muck is a soft, organic layer that forms as plants, algae, and natural materials decompose on the lake bottom.

As it breaks down, muck releases excess nutrients, particularly phosphorus, that fuel harmful algal blooms, cause harm to fish and wildlife, and degrade water quality. Over time, this cycle accelerates, creating a self-reinforcing problem that worsens without intervention.

Muck removal from lake bed

A Destructive Cycle

Muck, Phosphorus & Harmful Algal Blooms

The decomposition of muck creates a harmful cycle that threatens the entire Lake Okeechobee ecosystem.

1

Organic Material Accumulates

Plants, algae, and natural materials settle and decompose on the lake bottom, forming muck over time.

2

Phosphorus Is Released

As muck decomposes, it releases excess phosphorus and other nutrients back into the water column.

3

Harmful Algal Blooms (HABs)

Excess phosphorus fuels harmful algal blooms that degrade water quality, harm aquatic life, and threaten downstream waterways including the Indian River Lagoon and Caloosahatchee River.

4

The Cycle Repeats

Algal blooms die and settle on the lake bottom, adding to the muck layer and intensifying the cycle of nutrient release and ecological damage.

The Damage

Ecological Impact

The muck problem extends far beyond Lake Okeechobee, affecting interconnected waterways across South Florida.

Degraded Water Clarity

Muck particles suspended in the water reduce visibility and block sunlight needed by submerged aquatic vegetation to thrive.

Harm to Fish & Wildlife

Toxic algal blooms deplete oxygen in the water, creating dead zones where fish and other aquatic organisms cannot survive.

Downstream Contamination

Nutrient-laden water discharged from Lake Okeechobee degrades the Indian River Lagoon, St. Lucie River, and Caloosahatchee River ecosystems.

Long-Term Ecosystem Decline

Without intervention, the cycle of muck accumulation, nutrient release, and algal blooms will continue to accelerate, causing irreversible harm to Florida’s freshwater ecosystems.

Spikerush and lilies thriving in restored waterway

Breaking the Cycle

Removing Muck Is the Critical First Step

Removing nutrient-laden muck is a critical step toward restoring Lake Okeechobee’s ecological health. By permanently removing the source of excess phosphorus, we can break the cycle of harmful algal blooms and begin restoring the lake’s natural balance.

Learn How You Can Help