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Hurricane Season Is Almost Here!

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Florida’s hurricane season begins on June 1 and ends November 30. Based on historical weather records dating back to the 1950s, a typical season will average 12 tropical storms with sustained winds of at least 39 miles per hour, of which six may turn into hurricanes with winds of 74 miles per hour or more. In addition to high winds, hurricanes and tropical storms can bring torrential rainfall. These severe weather events can produce localized flooding that can be exacerbated by improperly maintained drainage systems.

Residential communities and businesses can help mitigate the impacts of severe storms with a few simple steps. One of the most important steps is the regular inspection and maintenance of drainage infrastructure. Drainage infrastructure can include inlets, discharge control structures, connecting pipes, and ponds. Proper maintenance of these facilities will ensure the unobstructed flow of stormwater and fully operational equipment.

Secondly, residential communities and businesses with operable discharge control structures can request authorization from the Lake Worth Drainage District (LWDD) to open these structures prior to the storm. Lowering pond levels provides additional storage for excess stormwater.

LWDD recommends establishing a Drainage Committee whose role is to provide for the maintenance and operation of the community or business’s drainage system. Drainage Committees may consist of board members, residents, and/or property managers. All members of the Drainage Committee should register with LWDD on its website at www.lwdd.net. This registration process ensures LWDD water managers know who to contact and where to send important weather alerts and instructions.

While weather predictions are becoming more sophisticated, forecasters are still unable to predict exactly where a storm will make landfall. The likelihood of flooding depends on several variables such as rainfall volume, ground moisture, and local terrain. No system, no matter how well designed, is 100% flood-proof. However, good maintenance practices are the first step to protecting you from potential flooding. Find more information about community flood control on our website https://lwddnet.wpengine.com/property-managers-hoa.

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Drones Used For Flood Control

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Approximately four years ago, the Lake Worth Drainage District (LWDD) began implementing the flying of Unmanned Aircraft Systems (UAS) commonly known as drones to monitor the canals, rights-of-way and flood control structures within its 200 square miles of the service area.

The drones are used as a professional tool to gather data, take images and video. The ‘bird’s eye-view’ provides a unique perspective that can quickly identify issues so that corrective actions can be taken before they develop into costly repairs. Due to their small size, the drones can reach areas difficult to inspect from the ground. They perform quickly and in a repetitive manner providing accurate and consistent data. Drone flights can cover large geographical areas using a two-man crew in a stationary location. This helps minimize inspection costs and avoids exposure of personnel to possible environmental risks and injuries.

LWDD deployed its drones after Hurricanes Irma & Michael. The results were very beneficial in post-storm assessments by aiding recovery teams to efficiently identify damage sites and prioritize response efforts. The data captured by the drone flights can be mapped and used for future emergency response planning by water managers.

LWDD’s operators strictly adhere to the Federal Aviation Association’s (FAA) regulations and are cognizant of surrounding homes during flights. The use of UAS systems is one of the more recent additions to LWDD’s flood control toolbox. For more information on the various methods used for flood control, visit https://lwddnet.wpengine.com/managing-water/overview.

C Stanley Weaver Canal Dredging 1919

The Orrin Randolph Plan

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The Lake Worth Drainage District (LWDD) was established on June 15, 1915, with a three-member Board of Supervisors whose mission was to reclaim land within its boundaries. Prior to the creation of LWDD, a considerable amount of drainage work had already been completed by several entities such as the State of Florida, the Palm Beach Farms Land Company, the Model Land Company, and the Boston & Florida Atlantic Coast Land Company. In addition, private landowners and farmers had dredged drainage canals throughout the area. Although small drainage systems had been created, a cohesive long-term drainage plan was needed for the future expansion of what is now known as Palm Beach County.

In the spring of 1916, Orrin Randolph, Chief Engineer for the newly created LWDD, presented his first report to the Board of Supervisors. This report contained 127 pages detailing a plan of means and methods for draining the lands within the boundaries of LWDD. The report was submitted in compliance with Chapter 6458 of the 1913 Session Laws of the State of Florida. At that time, LWDD consisted of 129,317 acres of land and 3,400 acres of water. Rectangular in shape, LWDD extended 26 miles in length and 8 miles in width. Population records of 1916 showed there were approximately 6,500 owners of property within LWDD’s boundary making the average ownership equal to 20 acres per capita. Approximately 400 farmers were cultivating an estimated 5,000 acres of land, principally vegetables for distribution to northern markets.

In his report, Orrin Randolph identified the areas within LWDD that could not safely be relied upon for agricultural purposes and outlined the design parameters needed for future drainage. Randolph stated, “Provisions for artificial drainage would absolutely be necessary in order to provide a run-off rapid enough to prevent the destruction of crops as a result of accumulated excess water on the land.” Thus, Randolph’s extensive report was adopted by the Board of Supervisors as the Plan of Reclamation. The implementation of this plan would forever change the local landscape.

South Florida’s abundant agricultural resources served as the catalyst upon which prosperous and populous cities were built. This prosperity, then and now, is a result of the water management plan introduced by Orrin Randolph and adopted by LWDD over a century ago as the Plan of Reclamation. This plan created a large network of drainage canals providing flood control and water supply which remarkably still functions today for over 800,000 residents and tens of thousands of acres of farmland.

Agriculture in our area no longer exists to only feed the local inhabitants, and the migration of people into Florida continues to increase annually. LWDD has modified its mission over the century to meet the changing water management needs of these two diverse communities. Much of the District’s emphasis today is on residential flood protection. Although meeting the needs of agriculture and settlement can bring many challenges, it is because they harmoniously co-exist that living and working in our community is so highly desirable.

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2020 Drainage Check-up

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businessman with clipboardStormwater drainage/flood control in our area is a shared responsibility. It is achieved through an interconnected, three-tiered drainage system. This system consists of:

  1. Neighborhood drainage systems, or tertiary systems, operated by property owners or residential associations
  2. Secondary flood control canals operated by the Lake Worth Drainage District (LWDD)
  3. Primary flood control provided by the South Florida Water Management District (SFWMD)

Neighborhoods systems are designed to retain water in swales and onsite retention ponds. Excess stormwater may be discharged into LWDD canals through control structures with fixed or operable weirs to prevent flooding of property. To be ready for whatever nature sends our way, whether it’s a typical summer rainstorm, a hurricane or drought, a properly working drainage system is imperative.

The dry season for south Florida is approximately November through May, thus January is the ideal time of year for residential communities to conduct inspections of their drainage infrastructure and make any necessary repairs. To ensure you have a well-maintained drainage system, communities should:

  • Maintain swale areas with regular mowing
  • Clear debris from street drains
  • Inspect discharge points/outfalls into LWDD canals
  • Have underground drainage pipes inspected every three to five years
  • Exercise operable discharge control structures by opening and closing them a few times
  • Visually inspect fixed discharge control structures for structural integrity and potential blockages

No drainage system is 100% flood-proof. The most important actions a residential association can take to protect their community from flooding is regular inspection and maintenance of the community’s drainage system. More information on community drainage and flood control can be found on LWDD’s website (Link: www.lwdd.net ).