Lake bank erosion repair in Miami Dade County

Shoreline Erosion Control rebuilds eroding lake banks for HOAs, condominium associations, golf communities and institutions in Miami Dade County. We do every foot of the work ourselves, from our base in Boca Raton. We rebuild the slope from the waterline up so the grass roots into the bank and holds, and we keep the work at the bank and out of residents' yards.

Why do lake banks fail in Miami Dade County?

Miami Dade communities sit on lakes of every kind, from shallow stormwater lakes built with the homes to old rock pits with steep edges and deep water close to shore. Each type fails in its own way, and each needs a repair matched to its slope and depth. A scope written for a shallow lake will not hold on a steep one.

What they share is the climate. The wet season runs May through October, and heavy rain carries runoff down the bank. The water level rises and falls with the seasons, so the strip at the waterline is soaked and dried every year. Once the grass at the edge dies back, the soil under it washes out, and the bank starts to cut back toward the homes.

Hurricanes add to the damage, and one storm can take out a section that had held for years. Our guides on why lake banks erode and lake bank damage after a hurricane cover both.

What rules apply to lakes in Miami Dade County?

Miami Dade lakes can answer to the South Florida Water Management District, the state, and the county's Division of Environmental Resources Management (DERM), which sits within the Department of Regulatory and Economic Resources (RER). We have not found a county lake bank slope rule in Miami Dade, so the stormwater permit for your lake is usually the main design standard. Before we write a scope, we check what applies and confirm who is responsible for the bank.

The South Florida Water Management District

Most community lakes built for stormwater are part of a permitted system. Section 5.3.2(e)(1) of the district's Environmental Resource Permit Applicant's Handbook, Volume II, requires wet detention side slopes no steeper than 4:1 (horizontal to vertical) from the top of bank out to at least 2 feet below the control elevation. Section 5.3.2(e)(2) treats slopes built steeper than 3.5:1 as a substantial deviation, and Section 5.4 calls for a 20 foot perimeter maintenance easement at slopes no steeper than 4:1. Older rock pit lakes may not have been built to this standard at all, which is one reason we check the permit history first. Our guide on the lake bank slope rule covers how boards use it.

Miami Dade DERM permits

Miami Dade County issues environmental permits under Chapter 24 of the county code. DERM states that a Class I permit is required before any work in, on, over or upon tidal waters or coastal wetlands, and a Class IV permit is required before any work in wetlands anywhere in the county, both under Section 24-48. Most inland community lakes are neither, but some lakes connect to canals or border wetlands, so we confirm this before work starts.

Filling a lake is also regulated. The county requires a Lake Fill Resource Recovery and Management Facility permit under Section 24-18 for facilities that place clean fill in lakes, and its lake fill guidelines call for Water Control Section approval when the lake has stormwater outfalls or a retention or detention function. A bank repair that adds material at the water's edge should be reviewed with these rules in mind.

State rules

Under Senate Bill 7040, signed June 28, 2024, Florida now requires periodic stormwater inspections reported to the permitting agency, with a qualified inspector requirement effective June 28, 2025. Rule 62-330.051(12)(e) exempts shoreline restoration with native plantings up to 500 linear feet, within 10 feet waterward of the water line.

Where do we work in Miami Dade County?

We work across the county, including Aventura, Miami Gardens, Miami Lakes, Hialeah, Doral, Sweetwater, Miami, Coral Gables, Palmetto Bay, Cutler Bay, Homestead and Florida City, along with the unincorporated areas in between.

We work with HOAs, condominium associations, communities built on former rock pits, golf and country club communities, Community Development Districts, and campuses with lakes on their grounds.

What does a free lake bank walk cover?

A free lake bank walk is a visit where we walk every lake with the manager or a board member. We measure and photograph each section of bank, note how far the edge has cut back, how steep the slope is at the water and how close it sits to fences, patios, pool decks and drain pipes. We also look at whether the lake connects to a canal or borders wetlands, since that changes which permits may apply.

After the walk, the board gets a written report and a scope it can put out to bid, whether it hires us or not. If your board is writing its own bid package, our guide on how to write a lake bank repair scope shows what to include.

To get started, book a free lake bank walk, take the Lake Bank Risk Score, or call (561) 309 9603.

Questions boards ask

Does Miami Dade County have its own lake bank slope rule?

We have not found one. For most community lakes, the design standard is the South Florida Water Management District permit, which calls for side slopes no steeper than 4:1 from the top of bank to at least 2 feet below the control elevation. We check your lake's permit before we write a scope.

Do we need a DERM permit to repair our lake bank?

It depends on the lake. DERM requires a Class I permit for work in tidal waters or coastal wetlands and a Class IV permit for work in wetlands anywhere in the county. Most inland stormwater lakes fall outside both, but we confirm it for your lake before work starts.

Our community is on an old rock pit. Is the repair different?

Yes. Rock pit lakes often have steep edges and deep water close to shore, so a repair designed for a shallow lake will not hold. We measure the slope and depth at the edge and write the scope for your lake.

What should we do after a hurricane damages our banks?

Photograph every damaged section with dates, put the report in the minutes and notify your insurer in writing. Then repair the sections closest to fences, patios, pool decks and pipes first.

Sources: SFWMD ERP Applicant's Handbook Volume II, Miami Dade Class I Permit, Miami Dade Class IV Permit, Miami Dade Lake Fill Permit, Miami Dade Lake Fill Permit Application and Guidelines, Florida DEP ERP Stormwater Resource Center, Rule 62-330.051, Florida Administrative Code