Page 8 - Abacoa Community News - June '21
P. 8

Page 8, Abacoa
      Northern Notes

      Streets, Swales And                                flow but allows pollutants to settle out of the water.
                                                         Ponding facilitates water quality improvements through
      Stormwater Management                              infiltration, filtration and sedimentary deposition.
                                                         Collected stormwater is expected to drain away through
      By Katie Roundtree,                                the soil within several hours or days. When the swale
      Finance Director, Northern                         becomes full, the cleaner surface water will spill over the
      Palm Beach County                                  berm and slowly run into a local water body. Eventually,
      Improvement District                               the remaining ponded water will either evaporate or
         Streets and swales are an                       infiltrate into the soil.
      important part of Northern                            Here are some ways to maintain proper swales:
      Pa l m Bea c h Count y                                • Let water pond. Runoff should temporarily pond in
      Improvement District’s                             the swale for 24 to 36 hours, sometimes even up to 72
      ove ra l l  st orm wa t e r                        hours.                                               As we approach the rainy season in South Florida, it
      management  system. The                               • Mow the swale but keep it at a good grass growth.   is important to keep in mind that some standing water in
      storm sewers located below                         Tall grass slows water movement.                  streets and swales is normal during heavy rains. Streets
      the street, ditches or swales                         • Remove and compost leaves and grass clippings from   and swales are an integral part of the stormwater system.
      located along the street, and the roadway itself serve to   swales.                                  If during or after a rain event you arrive upon a roadway
      convey stormwater to designed locations. It is important      •  Minimize  the  use  of  fertilizers,  pesticides  and   where you cannot determine the depth of the water in
      to understand the basics of how streets and swales are   herbicides within 50 feet of a swale.       the street – for your own safety – do not drive down the
      used  to  convey  stormwater,  in  order  to  identify  when      • Do not pile garbage, trash, leaves, limbs or garden   street. Find an alternate route. Cars can lose traction in
      problems may occur.                                debris in swales – this adds pollutants which can wash   as little as 6 inches of water. If you are not sure of how
      Streets                                            into downstream waters.                           deep the water is, turn around.
         Did you know that in very heavy rains, some water      • Do not pave the swale — this reduces the filtration      NPDES tip: It is important to never dump any debris,
      standing in streets or swales is part of the flood control   and infiltration of runoff.             including but not limited to landscape waste, garbage or
      design plan and is expected? Many streets are designed      • Do not park vehicles in the swale— this compacts the   chemicals into a storm sewer inlet. While bulky materials
      and built with curbs and gutters along the street and storm   soil so less runoff soaks in. It also destroys the vegetation   can cause flooding, chemicals and other wastes that are
      sewers underneath the pavement. The curbs and gutters   in the swale that is needed to filter the pollutants out of   dumped into a storm sewer eventually drain into lakes and
      direct stormwater from the pavement into the storm   the water.                                      canals, which threaten fish and wildlife and pollute the
      sewers. These storm sewers not only collect water from      • Do not alter the design of the swale. Any changes   water. Please check our website for information regarding
      the roadway, but also connect to other drainage systems   will require a permit as they may affect drainage.   illegal dumping.
      to collect water from yards and subdivisions and transport
      the stormwater to lakes, canals and other outlets.
      neighborhood lake’s water level may seem to rise quickly  Experience Dentistry with a Woman’s Touch

         As water flows from the streets into the lakes, your
      during heavy rain, but that’s not likely to last. If the
      system in your neighborhood is working properly, levels
      will return to normal soon after the rain has stopped.            Cosmetic & Comprehensive Restorative Dentistry
      A more widespread and longer-lasting rain event will
      require more time for  local, secondary  and  regional                  State of the Art & Same Day Restorations
      systems to absorb the excess water.
         At times, blockages can occur, which can cause                      Nitrous Oxide/Oxygen Sedation Available
      undesired flooding conditions and roads to become
      impassable. Many stormwater blockages in streets occur
      due to clogged storm sewer inlets. If there is an inlet in      Joanne Green, D.D.S.
      the street adjacent to your home, residents are asked to
      keep this drain clear of all obstructions including leaves,           10887 N. Military Trail, Suite 6
      grass and debris. Debris at storm sewer inlets also build            Palm Beach Gardens, FL 33410
      up after a storm event, which is a good time to check the
      inlet to make sure that the system will work well in the     (561) 622-2815 •
      next storm.
      Swales                                                          Medical College of Virginia School of Dentistry - Cum Laude
         Chances are if you’ve lived in South Florida long       Hospital of the University of Penn - General Practice Residency Training
      enough, you’ve heard at least one person use the word                  Harvard Dental School - Former Instructor
      “swale.” A swale is a graded and engineered grassy area         Boston Brigham and Women’s Dental Group - Staff Dentist
      of land appearing as a linear, shallow, open channel, that
      stretches from the edge of the sidewalk in front of homes
      (or the property line if there is no sidewalk) to the edge
      of the street. Swales are typically vegetated with flood
      tolerant, erosion resistant plants. Swales are one of the
      most commonly used stormwater practices. For many
      years, swales have been used to direct runoff from rural
      highways and residential streets. Today, swales not only
      direct stormwater but also help filter runoff and reduce
         A swale slows down the rapid flow of stormwater
      runoff by ponding water between its sloping sides, often
      called berms. The ponding not only slows the rate of
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