Civil Engineering Jacksonville
Jacksonville is the Florida market with the most local design guidance of its own, and the most recently rewritten. Duval sits wholly inside the St. Johns River Water Management District, so the district question is settled. The one that is not settled is the city manual, because Volume 2 of the Land Development Procedures Manual took effect in January 2026 and it carries drainage design guidance with coefficients written for Duval County specifically.
We help Jacksonville area clients with:
- Drainage engineering
- Stormwater management
- Site development
- Permitting support
- Utility coordination
- Forensic investigations
- Foundation inspections
The District Question Is Settled Here, and It Is the Easy Half
Florida runs one statewide environmental resource permit rule, Chapter 62-330 of the Florida Administrative Code. The design criteria a stormwater system actually has to meet are not in that rule. They are in the applicant handbook, and each water management district adopts its own.
The Department of Environmental Protection lists Duval among the counties the St. Johns River Water Management District covers in full, alongside Clay, Nassau, St. Johns, Flagler and Volusia. Unlike Orlando, where Orange and Osceola are each split between two districts, there is no boundary to establish here. The St. Johns River handbook governs, and it is pulled into rule through the district chapters in Division 40C of the Florida Administrative Code, including rule 40C-4.091, Publications Incorporated by Reference, effective June 28, 2024.
What the District Still Decides
- Treatment volume and the water quality standard the system has to meet
- The discharge rate the site is held to, and the flood criteria behind it
- Wetland and surface water impacts, and whether the project is exempt, general or individual
- Which agency processes the application, since project type rather than location decides that
And the River Is Tidal at Jacksonville
A large share of the city drains toward the St. Johns River, and the river is tidally influenced well upstream of downtown. That makes the tailwater at an outfall a moving number rather than a fixed one.
A system checked on a dry afternoon at low water can look entirely adequate and still back up in the condition that governs, which is a high tide coinciding with a storm rather than either one alone. Establishing the real tailwater condition is the cheapest work on the project and the one most often skipped.
Jacksonville Publishes Its Own Design Numbers, and They Changed This Year
Most Florida cities point at the district criteria and add a handful of local requirements on top. Jacksonville does more than that. The city maintains a Land Development Procedures Manual, and Volume 2 took effect in January 2026. It carries site plan design requirements, roadway design requirements, drainage design guidelines, green infrastructure design guidelines, landscape design guidelines and solid waste requirements, drawing its authority from the City of Jacksonville Ordinance Code and the 2045 Comprehensive Plan.
The drainage guidance in it is not generic. It includes tables written for this county specifically, among them performance reduction factors for average annual percolation volume for grassed conveyance swales in Duval County. A designer working from a statewide reference, or from an office template assembled before this January, is not working from what the reviewer is holding.
Why the Date Matters on Your Next Submittal
A manual that took effect in January 2026 is weeks old. Every drainage calculation package assembled in this market before that date was built against the previous version, and a good deal of local habit was built with it.
That does not make an older package wrong. It does mean nobody should assume it is right. We confirm which version the submittal will be reviewed against, and whether anything the design relies on moved between the two, before the calculations get assembled.
One Reviewer, Which Cuts Both Ways
Miami-Dade has more than thirty municipalities and a separate county environmental review. Jacksonville does not. Land development across the city jurisdiction runs through one manual and one review process, which is a genuine advantage on schedule and on predictability.
It also concentrates the risk. There is no second interpretation to appeal to and no adjoining jurisdiction with a looser reading. What the manual says is what the project has to satisfy, and reading it correctly the first time is worth more here than in a market where the standard varies by a few miles.
The city also runs a stormwater management utility under Chapter 754 of the Ordinance Code, which is separate from design review and has its own implications for a developed site.
Civil Engineering Services Across Jacksonville
Foundation Masters, LLC provides civil, structural, geotechnical, forensic and construction integrated services for residential, commercial, municipal and waterfront projects throughout Jacksonville and Northeast Florida. We work for property owners and developers, general contractors and subcontractors, homeowners associations, municipal agencies and public entities, real estate investors and asset managers, and insurance carriers and legal teams.
Site Planning and Land Development
Layout, grading and earthwork for new development, redevelopment and private site improvements, coordinated with the foundation design rather than handed to it.
Stormwater Management
Treatment and attenuation designed to the district criteria and the city guidance together, with the calculations that have to accompany them through review.
Drainage Engineering
Design for sites that pond, flood, erode or discharge where they should not, including drainage and waterproofing where the water has reached a structure.
Due Diligence and Feasibility
Early review of drainage constraints, flood exposure, utility conflicts and development limits, while the deal can still be priced around them.
Utility Coordination
Water, sewer and service routing, conflict resolution against the drainage design, and the long term serviceability of what gets buried.
Roadway and Access Improvements
Engineering for site access, internal circulation and roadway related features, to the roadway design requirements the city manual sets out.
Environmental Permitting Support
Environmental resource permit support, local site plan review, and the requests for additional information that decide how long a review actually takes.
Geotechnical Investigation
Soil borings and geotechnical engineering, which on a stormwater project is not a separate scope: infiltration and seasonal high groundwater come out of the same holes.
Earth Retention and Shoreline Work
Seawalls and bulkheads and sheet piling for riverfront stabilization, cutoff and erosion control, designed, permitted and installed by our own crews.
Forensic Civil Engineering
Investigation of erosion, drainage failure, construction defect and site performance disputes, with a written opinion on cause rather than a list of observations.
Construction Aware Problem Solving
Guidance shaped by field realities and by the need for a solution that a crew can actually install at the price it was budgeted at.
Foundation Inspection and Repair Engineering
Inspection and repair engineering for structures already moving, frequently for reasons that start at the surface with water.
Why a Jacksonville Site That Floods Is Four Different Problems
Standing water in the same place after every storm looks like one problem and is usually one of four. They produce the same symptom and they do not share a repair, which is why the diagnosis is worth more than the fix.
The system is undersized for what is there now. Impervious area was added, a basin was filled, or the criteria have since been tightened. The system is doing what it was built to do and what it was built to do is no longer enough.
The system is the right size and has lost its capacity. A silted basin, a control structure with a blocked orifice, a clogged underdrain, a conveyance swale flattened by twenty years of mowing. This is the cheapest of the four and the one most often skipped, because maintenance is the line item nobody wants to fund.
The outfall is the problem, not the site. On a river that is tidally influenced past downtown, the receiving condition changes through the day. Water can leave the parcel exactly as designed and then have nowhere to go, and nothing done inside the property line will change that.
It is not stormwater at all. Seasonal high groundwater surfacing in a low spot, a leaking service line, irrigation overrun, or grading on the parcel next door that changed where the water arrives from. These get treated as drainage failures regularly, and the repair costs a fraction of a new system.
When Basic Plans Are Not Enough
Some projects need more than a standard set of plans. That is especially true when drainage, grading, soil behavior, permitting and construction all overlap, which in this market is most of the time rather than some of it.
- Drainage and grading conflicts, where the fix for one creates the other
- Flood prone site conditions and elevations set locally rather than by the state minimum
- Poor or variable soils, and infiltration that does not match the assumption
- Conflicts between the district criteria and the city manual
- Sites where the outfall, not the parcel, is the constraint
- Projects designed before the January 2026 manual and submitted after it
What We Establish Before Design Starts
- Which version of the city manual the submittal will be reviewed against, and what moved
- The basin inside the district, and the criteria that apply to it
- Whether the parcel is inside the city jurisdiction or one of the surrounding counties, which changes the manual
- Local requirements where they are stricter than the state criteria, because then they are the criteria
- Flood zone and the finished floor elevation the local ordinance actually requires
- The legal outfall, its condition, and the tailwater it sees in the governing tidal condition rather than on the day of the visit
- Existing permits on the site, because a permitted system usually comes with obligations attached
And What We Establish Below Grade
- Seasonal high groundwater, which is not the level a borehole reads on the day it is drilled
- Infiltration behavior, where the design depends on the ground accepting water rather than storing it
- Hydrologic soil group, since the city drainage guidance keys its factors to it
- Depth and variability of compressible or organic material under anything carrying load
- Fill history, because a site that was raised once behaves differently from one that never was
- Whether excavated soil can be reused on site, which is a budget question answered by a laboratory rather than by an opinion
Drainage Review · Development Support · Jacksonville Site Evaluation
Criteria First, Then Drawings
The civil problems we get called to look at in this market are rarely calculation errors. They are criteria errors. A package built against the previous version of the city manual, a percolation factor taken from a statewide reference rather than the county table, a finished floor set from the state minimum when the local ordinance was higher, a swale sized before anyone established the soil group under it.
So the criteria get settled before anything is drawn. District and basin. City manual and its version. Flood zone and floor elevation. The outfall and the tidal condition it really sees. The ground. Then the site gets designed.
It is also why our civil work sits next to our structural engineering and geotechnical engineering rather than being subcontracted away from them. On a Northeast Florida site the grading plan, the foundation and the water table are one problem wearing three hats, and the cheapest time to notice that is before the first submittal.
Engineering Support for Jacksonville Area Projects
We assist property owners, developers, contractors, attorneys and commercial clients with drainage, stormwater, site development, permitting and forensic engineering challenges throughout Jacksonville and Northeast Florida.
Our focus is practical engineering guidance, technical documentation and solutions that move a project forward from evaluation through implementation, rather than a report that describes a problem and stops there.
What That Looks Like on Paper
- Signed and sealed drawings and calculations from our Florida licensed engineers where the project requires them
- Drainage and stormwater evaluations tied to the criteria that actually govern the parcel
- Site development support and feasibility review
- Permitting assistance across the district and the city
- Forensic engineering investigations, with an opinion on cause
- Civil, structural and geotechnical coordination on one project rather than three
We Want Civil Engineers with Florida Experience
We are always interested in hearing from civil engineers, engineers in training, project managers and technical staff with experience in drainage, stormwater, site development, utilities and forensic problem solving.
What we value is field awareness. A plan set that cannot be built the way it is drawn is not a finished plan set, and the people who know that are the people who have stood on the site while it was being built.
Recruiting Interests
- Stormwater and drainage design
- Site development and land planning
- Permitting and agency coordination
- Utility layout and infrastructure support
- Forensic investigation of site performance failures
- Florida field experience, which is the one that cannot be taught quickly
Civil Engineering in Jacksonville: Common Questions
What does a civil engineering firm in Jacksonville help with?
Site planning, drainage design, stormwater work, grading, utility coordination, permitting and forensic problem solving for Jacksonville properties and developments. On most Northeast Florida projects the drainage work is the part that governs the layout, because the environmental resource permit program regulates activities that alter surface water flows, including upland stormwater runoff, and almost any development does that.
Which water management district is Jacksonville in?
Duval County sits wholly inside the St. Johns River Water Management District. The Department of Environmental Protection lists Duval among the counties that district covers in full, alongside Clay, Nassau, St. Johns, Flagler and Volusia. Unlike Orlando, where Orange and Osceola are each split between two districts, there is no boundary to establish here.
Has the Jacksonville design guidance changed recently?
Yes, and this is the one to watch. Volume 2 of the City of Jacksonville Land Development Procedures Manual took effect in January 2026. It carries site plan design requirements, roadway design requirements, drainage design guidelines, green infrastructure guidelines, landscape design and solid waste requirements, drawing its authority from the City Ordinance Code and the 2045 Comprehensive Plan. Any calculation package assembled before that date was built against the previous version.
Does Jacksonville publish its own drainage design numbers?
It does, and that is unusual. The drainage guidance in Volume 2 is not generic. It includes tables written for this county specifically, among them performance reduction factors for average annual percolation volume for grassed conveyance swales in Duval County. A designer working from a statewide reference is not working from what the reviewer is holding.
Do I have to satisfy both the district and the city?
Yes. Two documents carry the numbers on a Jacksonville site: the St. Johns River district applicant handbook, pulled into rule through Division 40C of the Florida Administrative Code, and the city Land Development Procedures Manual. Where a local requirement is stricter than the state criteria, the local requirement is the criteria. We read the city manual before the state criteria rather than after, because it is the one more likely to move a layout.
Do you provide signed and sealed drawings and calculations?
Yes. Our Florida licensed engineers provide signed and sealed plans, calculations, reports and permit documents, along with the responses to requests for additional information that decide how long a review actually runs.
My Jacksonville site floods in the same spot every storm. Does that mean the drainage system failed?
Not necessarily, and the distinction is worth money. The system may be undersized for impervious area added since it was built, it may be the right size and silted in, the outfall may have nothing left to give, or the water may not be stormwater at all but seasonal high groundwater. In this market the outfall deserves particular scrutiny, because a large share of the city drains toward a river that is tidally influenced past downtown. We establish which cause is operating before anyone prices a fix.
Why does the tide matter on an inland Jacksonville site?
Because the St. Johns River is tidally influenced well upstream of downtown, so the tailwater at an outfall is a moving number rather than a fixed one. A system checked on a dry afternoon at low water can look entirely adequate and still back up in the condition that governs, which is a high tide coinciding with a storm rather than either one alone.
Can you help with stormwater and drainage problems on an existing property?
Yes. We review runoff, flooding, grading, elevation conflicts and failed drainage, survey what is actually on the ground against what was permitted, and set out what it takes to reconcile the two. An existing permitted system usually comes with obligations attached, so a drainage correction is a compliance question as well as an engineering one.
Do I need soil borings for a Jacksonville stormwater design?
Usually yes, and they are not a separate scope from the civil work. Seasonal high groundwater and the infiltration behavior of the soil come out of the same investigation, and both of them size the system. The city drainage guidance also keys its factors to hydrologic soil group, so establishing the soil is not optional if the calculations are going to hold up in review.
Do you work on site development projects?
Yes. We support planning, feasibility review, layout, grading, utility coordination and the permit work that carries all of it through review, for new development, redevelopment and private site improvements across Jacksonville and Northeast Florida.
Do you provide forensic civil engineering?
Yes. We investigate erosion, drainage failure, construction defect and site performance disputes, and we provide a written engineering opinion on cause rather than a list of observations. That work runs alongside our structural and geotechnical forensic practice, which matters when a water problem and a foundation problem turn out to be the same problem.
Can you help with erosion, riverfront and waterfront issues?
Yes. We evaluate drainage, erosion and site stability on riverfront and waterfront property, and we design, permit and install seawalls, bulkheads and sheet piling with our own crews, which changes what gets drawn because the people drawing it know what can be installed.
Who do you work with?
Property owners and developers, general contractors and subcontractors, homeowners associations, municipal agencies and public entities, real estate investors and asset managers, and insurance carriers and legal teams.
How do I start a project with Foundation Masters?
Send the address, the survey and any plans, permits or photographs you have, along with what you are trying to achieve. We will establish the district and basin, the version of the city manual that governs, and the criteria that apply to the parcel, and tell you what the project actually requires before you spend money designing to the wrong numbers.
The Rest of What We Do
Civil engineering is one of several disciplines under the same roof here, which is the reason a water problem and a foundation problem do not have to be investigated by two different companies.
Structural Engineering Florida
Structural design, evaluation and repair engineering across the state, including the market pages for each city we cover.
Geotechnical Engineering Florida
Subsurface investigation, settlement analysis and the soil work that most civil designs in this state depend on.
Foundation Repair Florida
Repair engineering and installation for structures already moving, frequently for reasons that start with water.
Drainage and Waterproofing Florida
Engineer led help for groundwater, runoff problems, slab moisture and water intrusion where site water has reached a structure.
Foundation Inspection Florida
Licensed evaluation for settlement, cracking and pre purchase questions, statewide.
Civil Engineering Florida
The statewide hub, carrying the permitting framework that sits behind every one of our Florida civil market pages.
Soil Borings
The investigation itself, including the groundwater and infiltration data a stormwater design is sized from.
Sheet Piling Contractors
Sheet piling and earth retention for seawalls, erosion control and riverfront site stabilization across Northeast Florida.
Seawalls and Earth Retention
Shoreline structures, bulkheads and retaining systems designed, permitted and built by our own crews.
Agency References
The primary sources behind the regulatory sections on this page. Worth reading directly rather than taking any summary of them on trust, this one included.
- City of Jacksonville, Land Development Procedures Manual, for Volume 2 and its effective date
- City of Jacksonville, Chapter 754 Stormwater Management Utility Code
- St. Johns River Water Management District, Permitting
- Florida Department of Environmental Protection, Water Management Districts, for the county coverage of each district
- Florida Department of Environmental Protection, Environmental Resource Permitting
- Florida Department of Environmental Protection, Stormwater Program
Markets We Cover for Civil Work
This Jacksonville page carries the local detail: the district that governs here, the city manual and its version, and the site conditions that recur in this market. The other city pages do the same for theirs.
- Civil engineering across Florida, the statewide hub
- Civil engineering in Tampa, in the Southwest Florida district
- Civil engineering in Orlando, where the St. Johns River and South Florida districts both reach
- Civil engineering in Miami, in the South Florida district
Talk to Our Civil Engineering Team About Your Jacksonville Project
Tell us the address and the scope. We will establish the district and basin, the version of the city manual that governs and the criteria that apply to the parcel, and tell you what the project actually requires before you spend money designing to the wrong numbers.
Foundation Masters, LLC
Civil, structural and geotechnical engineering, and deep foundation installation, throughout Jacksonville, Northeast Florida and the State of Florida.
Phone: 813-614-1718
Service area: Jacksonville and Northeast Florida, with market pages for Tampa, Orlando and Miami.