Click for a map of the LI Aquifer System. It will help you understand the below links
Click for aerial view of the effected area  

Click for Long Term monitoring of Well S-1812 Near Ronkonkoma.  The erratic behavior demonstrated in well s-1812 since 1964 is
indicative of Human Development
Click for monthly rainfall on Brookhaven labs from 1949 to 2006. 
Click for Ronkonkoma and Brookhaven Percipiation compaired to well 1812

The following  reports cost Suffolk County millions and contain thousands of pages, maps and graphs. They actually predicted every groundwater problem we are facing today and provided solutions oner 20 years ago. 
Click for the 2006 Lake Ronkonkoma Clean Lake update presentatoin by NPV. 
Click for the 1986 Lake Ronkonkoma Clean Lake Study. 
Click for 1980  H2M, Drainage & Groundwater Relief Report ... Volume 1
Click for 1980 H2M, Drainage & Groundwater Solutions Report ... Volume 2.  
Click for 1980 H2M, Drainage & Groundwater Solutions Report ... Volume 3

Click for the  1983 Extensive clay unit report. The report explores a huge lump of  clay A/K/A “Smithtown Clay'. The clay  is beneath eastern Huntington, Smithtown and western Brookhaven. The clay runs south from the Long Island Sound  to Lk Ronkonkoma.   

Click for gallons of water the Suffolk County Water Authority pumps into Zone 12.  Usage has doubled since 1987. When reviewing the pumping figures, please  realize you are viewing a much larger area than the affected area.

The Following will help you understand the Island wide groundwater system
Click for 1999 Effects Of Development Of The Ground-Water Flow System Of LI
Click For 2004 Statistical Analysis of Long-Term Hydrologic Records

Click  for SCWA site 
Click  for SCWA  education 
Click  for SCWA conservation suggestions
Click  for USGS site

Click for 2007 Smithtown Population study
Click for 2006 LI Population statistics
Click for 1998 LI Population statistics   

• All water flows from north to south.  (Fable)

•  Trees Drink 500 Gallons of Water a Day.  (Unlikely)

•  The surface of a Lake Ronkonkoma is at the same level as the water table next to it.  (Fact)

• Groundwater levels would not be affected if the streams were cleared of debris.  (Fable)

•  Silt at the bottom of Lake Ronkonkoma is causing the high groundwater table.  (Fable)

•  Development has had little or no effect on the groundwater levels.  (Fable)

•  It doesn't matter where you take rainfall measurement since all of Long Island gets the same amount.  (Fable)

•  Groundwater flows mainly in underground streams throughout Long Island.  (Fable)

•  Clay acts as a barrier to groundwater flow and only allows water to flow a foot a day.  (Not Quite Right)

•  Silt at the bottom of the Nissequogue and Connetquot rivers is causing the high groundwater table.  (Partly)

•  The weatherman said it rained an inch so I should not have more than another inch in my basement.  (Fable)

•  They say that it has no affect on groundwater when the water is pumped from one place to another.  (False) 

•  Statistics show that rainfall is the only factor impacting groundwater.  (Fable)

•  At the August groundwater meeting, the engineer said that the water table slopes downward to the shore.  (True)

  LI Groundwater Facts and Fables by LI Warerboy