A denial from the Army Corps is not always the end of a project. It is often the beginning of a conversation, and how that conversation is handled determines whether the structure you designed is the structure you build.

When the Navigation District denies an application, you have two options. Which one makes sense depends on what your shoreline gives you to work with.

Why your project goes to the Army Corps directly

If your project is within 300 feet of a federal channel, you automatically submit to the Army Corps directly for federal approvals, and the Army Corps Navigation District is the group that specifically reviews your application.

This catches more waterfront owners than expected. Federal channels run through much of South Florida’s navigable water, including the Intracoastal Waterway, and a property does not need to sit on open water to fall within that 300 foot band. Many canal and cut properties do.

The Navigation District’s mandate is narrow. They are not evaluating seagrass, corals, or water quality. They are evaluating one thing: whether your proposed structure encroaches too far toward a channel that vessels depend on.

What an XY survey is

During that review, you get what is called an XY survey completed.

An XY survey has to be prepared by a licensed boundary surveyor or another licensed survey professional. This is not something an engineer or a contractor can produce as part of a plan set. The Navigation District is relying on those coordinates to make a measurement, so the document has to carry the authority of a licensed survey.

The name refers to coordinates. X and Y describe the horizontal position of a point on the earth, the same way a latitude and longitude pair identifies a location. The survey plots the furthest waterward points of your proposed structure and records those points as coordinates.

That is the entire purpose of the document. It answers one question with precision: where, exactly, does the outermost edge of this structure sit? The Navigation District then measures the distance from their federal channel to that furthest waterward point. Because they are working

from fixed coordinate values rather than dimensions scaled off a plan sheet, they can make that measurement independently.

This is worth separating from the other surveys on a waterfront project, because the three get confused often. A bathymetric survey measures water depth and bottom contours. A benthic survey, sometimes called a marine resource survey, documents what is living on the bottom, such as corals, sponges, and seagrass. An XY survey documents position and nothing else. A project may require all three, because they answer different questions for different agencies, and one does not substitute for another.

What a denial actually means

Sometimes the Navigation District will deny your application. When that happens, it generally means the coordinates from your XY survey placed your structure closer to the federal channel than they are willing to accept in that location.

That determination is site specific. The distance the Navigation District enforces depends on the channel, the traffic it carries, and conditions in that stretch of water. It is not a single published number that applies everywhere in South Florida.

A denial at this stage is a position on your current design. It is not a finding that nothing can be built at your property.

The first option is a redesign

The first option is to redesign your proposed structure to comply with the distance the Navigation District is enforcing for your project.

This is the direct path. It usually means pulling the waterward extent of the structure back, which may affect vessel draft, slip configuration, or how the dock functions for the boat it was designed around. Your engineer revises the plans, a new XY survey reflects the revised footprint, and the application moves forward.

For some properties this is a minor adjustment. For others it changes what the structure can actually do, which is why the second option is worth exploring before anyone starts revising drawings.

The second option is a justification letter

The second option is to submit a justification letter explaining why you would like to keep your structure at the proposed location.

A justification letter makes a case, and the strength of that case depends on what the site gives you to work with.

Neighboring properties are often the starting point. If existing structures on adjacent properties already sit further waterward than what you have proposed, that becomes part of the argument. Your structure is not establishing a new line in the water. It is sitting inside one that already exists.

Site specific conditions along your shoreline can support the request as well. Shoreline geometry, water depth, and the practical constraints of the property all factor in.

It is worth being direct about this. Submitting a justification letter does not mean the Navigation District will approve it. There is no guarantee. What we can say is that we have had a few projects where they did approve it and allowed us to proceed with the proposed work after giving us a denial initially.

What this means for your project

These reviews turn on documentation and on how a request is framed to the agency. The coordinates have to be right. The revised plans have to reflect what was actually surveyed. A justification letter has to make an argument the Navigation District can act on, supported by evidence the reviewer can verify, rather than a general request for an exception. This is exactly why having an agent communicate with the agencies in a specific manner can make such a difference for your project.

If you have already received a denial, the practical advice is to hold off on reworking your plans until you know whether a justification is worth pursuing. A redesign carries real engineering cost, and a short conversation first can tell you whether the original design is defensible.

If you have not submitted yet and your property sits near a federal channel, this is where the most value exists. Understanding where the Navigation District is likely to draw the line before your plans are finalized is considerably less expensive than finding out afterward.

A denial is not a verdict on your property. It is a position on your design, and designs can be defended.

At Breezy Permits, we handle the project from survey preparation, to engineering, to final approvals. If you are planning a structure close to a federal channel and you are not sure where to start, reach out to our team.