Celebrating 75 years in Business: 1946-2020
  • Land Development
  • Planning & Landscape Architecture
  • Water Resources
  • Environmental
  • Surveying & Mapping
  • Transportation
  • Utilities

Surface Water Master Planning

Whether it is a single watershed, a county or a multi-county analysis, we have the experience and expertise to provide the needed master plan. Master planning provides a look at the whole and not one or two facets of a watershed. It begins with the physical properties of boundary, ground elevations, rights-of-ways, easements, ground cover, stream and overland flow characteristics and continues with calculated capacities for conveying and treating runoff and finishing with needed improvements, level of service and financing the work. The work may be operations and maintenance or capital improvements. These expenditures are to maintain and improve, where needed, the conveyance capacity, water quality and native vegetation where feasible physically, socially and economically.

BMP Selection and Design

There are numerous water bodies within Southwest Florida that have been identified by FDEP as impaired. A piece of the solution to get these water bodies to meet water quality standards are local and regional surface water treatment systems. We have worked with both public and private clients to design treatment systems including lakes, rain gardens, filter marshes and proprietary BMPs to improve the water quality discharging to these impaired water bodies. We have worked to make these systems more palatable by making them amenities instead of just treatment areas. When designing these systems, we take the time to design them to provide the water treatment while also providing wildlife utilization and aesthetics where practicable.

Surface Water Retrofit

Retrofit projects can be some of the most challenging and complex. May times it is not physically or financially feasible to completely fix an existing problem. Our team of surface water professionals understand this and are able to work with our clients and interested third parties to come up with the best financially feasible solution.

Water quality is now in the forefront of all retrofit projects. The days of fixing a flooding problem by just improving the conveyance capacity are gone. Water treatment must be incorporated into the solution or the solution will not get through permitting. The flooding and water quality problems must be solved simultaneously even though they often work at odds to each other. Our experience and understanding of the hydraulics and hydrology and surface water BMPs helps us solve both problems with one solution.

Hydrologic, Hydraulic & Water Quality Modeling

The Johnson Engineering surface water team has modeling experience on a wide range of projects. Our experience helps identify the needs and provide the services required for each individual project. We can utilize spreadsheet calculation for relatively small projects that are not anticipated to evoke much controversy. For larger projects that include significant third party interest, our team is able to utilize complex multi faceted models to answer a wide variety of questions from permitting agencies and interested third parties.

Federal, State and Local Surface Water Permitting

Our surface water team works with local, state and federal permitting agencies on a wide range of projects on an almost daily basis. Our experience ranges from a small turn lane addition to several thousand acre mixed use developments and virtually everything in between. This variety of experience gives us a unique understanding of the agencies, their staff and their rules. Our continual contact with agency staff and their permitting processes allow us to stay up to date on any permitting changes that might occur. This allows us to help our clients by updating them on policy changes that could impact their project.

Flow & Stage Monitoring

The increased scrutiny associated with today’s projects make data much more important. Our surface water team understands this and is able to assist our clients by creating and implementing monitoring plans that increase the understanding of existing surface water management systems. We work with our clients, permitting agencies and other interested parties to create monitoring plans that satisfy all parties involved. After completing the monitoring plan our experienced team is able to install, maintain and monitor each piece of equipment through the life of the project. After completing the monitoring our team is able to interpret that information and utilize it to establish water table elevations, calibrate models and facilitate permitting.