Your Question Answered

Q: What is the difference between the Lake Worth Drainage District (LWDD) and the South Florida Water Management District (SFWMD)? Click here to find the answer.

A: Both the LWDD and the SFWMD provide flood control but differ in size and responsibilities. SFWMD is one of our state’s five regional water management districts and oversees the water resources in the southern half of Florida, covering 16 counties from Orlando to the Florida Keys. LWDD is a local, independent special taxing district encompassing approximately 200 square miles in southeastern Palm Beach County.

Flood control in South Florida is an integrated system consisting of primary canals operated by SFWMD, secondary canals operated and maintained by the LWDD, and tertiary neighborhood drainage systems owned, operated and maintained by residential associations. LWDD and SFWMD work closely together to provide flood control for our residents. When necessary, LWDD discharges excess stormwater into the regional flood control system or primary system operated by the SFWMD.

graphic that shows the flow of water

Your Question Answered

How does stormwater drain from my neighborhood?

When it rains, stormwater should flow from rooftops, driveways, and streets into a retention pond or storm drain. Then, if needed for flood control, flow out through the pond’s discharge control structure into a LWDD canal. Most of the time, this drainage occurs unnoticed by the average individual. However, during a severe storm, flooding in streets, sidewalks, and driveways can occur. This temporary flooding may cause concern, but it is important to note these low-lying areas are designed as secondary detention areas to protect buildings and homes from flooding.

Within LWDD’s boundary, stormwater drainage is a shared responsibility:

  • Neighborhood drainage systems operated by property owners or residential associations
  • Secondary drainage systems operated by LWDD or local government
  • Primary regional system operated by the South Florida Water Management District

Water managers in charge of primary and secondary systems are continuously monitoring the weather and canal levels to proactively respond to changes in canal elevations. In anticipation of a heavy rainfall event, water managers will make operational adjustments to maintain appropriate water elevations for flood control. Throughout the year, routine canal maintenance and inspections of control structures, pumps, and other infrastructure are performed to ensure the overall functionality of the water management system.

Property owners and residential associations have a similar role regarding their neighborhood drainage system. They must maintain their drainage infrastructure to ensure that inlets, storm drains, underground pipes, and emergency discharge control structures are clear of potential blockages and working as designed. Property owners and associations should conduct an annual inspection of the drainage infrastructure, and repairs should be made before the onset of storm season.

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Water Management Is 24/7

South Florida’s tropical weather events can be intense and seriously threaten property and life. In response, the Lake Worth Drainage District (LWDD) monitors canal elevations and makes necessary operational adjustments to its water control structures to provide flood control for the 200 square miles of land within its boundary.

Water control structures act like dams, allowing stormwater to be released or held back depending on weather conditions. The technology used to operate LWDD’s water control structures is called Supervisory Control and Data Acquisition (SCADA). As the water rises in the canal and reaches a pre-determined elevation, SCADA will slowly open control structures releasing water for flood control. Similarly, as water elevations return to normal levels the control structure gates will close, holding back water for conservation and water supply demands.

This response to changes in the canal system happens automatically, 7 days a week, and can be monitored remotely by staff using mobile devices. However, in anticipation of severe weather, staff can override the automated SCADA system and make manual adjustments as needed. The remote monitoring and operating functions of SCADA eliminates the need for LWDD staff to venture out during dangerous weather conditions to operate control structures, as well as significantly reduces response time.

Another advantage to SCADA is the capture of operational data by the system which can be used to evaluate future water supply needs and historical flood control responses. This data can be shared with regional water management partners for enhanced flood control coordination and water conservation measures.

LWDD is proud to provide the residents and businesses within our boundary this 24/7 flood control technology.

Seven Fast Facts About Flood Control

image of 7 Fast Facts
HOA discharge control structure

How Drainage Works

Man-made lakes and ponds are attractive enhancements to many residential communities and businesses within the Lake Worth Drainage District (LWDD). More importantly, they serve an important public safety purpose by providing stormwater storage for flood control.

When lake elevations rise due to rainfall, excess stormwater will flow through the community’s discharge control structure and into the LWDD canal. Most of this drainage occurs unnoticed by the average individual. However, during a severe storm, flooding in streets, sidewalks and driveways may occur. This nuisance flooding may cause concern for some residents. However, these low-lying areas are designed as secondary detention areas to protect homes from flooding.

Within LWDD, flood control is a shared responsibility and achieved through an interconnected, three-tiered drainage system. By working together, these three systems provide effective flood control.

This three-tiered system is made up of:

  1. Tertiary, or neighborhood drainage systems operated by property owners or residential associations.
  2. Secondary drainage systems which are operated by LWDD (lwdd.net).
  3. Primary system operated by the South Florida Water Management District (sfwmd.gov).

Water managers in charge of primary and secondary systems are continually monitoring the weather and canal levels to proactively respond to changes in canal elevations. In anticipation of a heavy rainfall event, water managers will make operational adjustments to maintain appropriate water elevations for flood control. Additionally, throughout the year, routine canal maintenance is conducted to provide unobstructed flow in the canal channel and access along the canal rights-of-way.

Property owners and residential associations have a similar role. They must maintain their drainage infrastructure to ensure that inlets, pipes and discharge control structures are free of potential blockages and working as designed, thus maintaining the flow of stormwater away from their property. An annual inspection of drainage infrastructure should be made, and repairs should be completed before the start of storm season on May 1.

The likelihood of flooding depends on several variables such as rainfall volume, duration, ground moisture and local terrain. It is important to note that flood protection does not mean flood proof. No system, no matter how well designed, is 100% flood proof. Even with quality flood control, homes and businesses may experience flooding if rainfall exceeds the drainage design or stormwater flow is blocked by debris. For more information on flood control visit our website at https://www.lwdd.net/property-managers-hoa.