Click for a map
of the LI Aquifer System. It will help you understand the below links.
aerial view of the effected area
Click for the
1986 Lake Ronkonkoma Clean Lake Study. It is the most recent study concerning flooding.
click for 1980 H2M, Drainage & Groundwater Solutions Report ... Volume 3.
Click for 1980 H2M, Drainage & Groundwater Solutions Report ... Volume 2.
Click for 1980 H2M, Drainage & Groundwater Relief Report ... Volume 1
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 USGS
monitored groundwater levels through our area from 1979 to present
Click for Long Term monitoring of Well S-1812
Click for the 1983 Extensive clay unit report.
The report explores the clay beneath mid-Suffolk A/K/A
Clay”. Clay can create a higher water pressure above the clay than below. Water
seeks to equalize this pressure. To accomplish this water
will flow horizontally over the clay until it reaches the lowest
level of water pressure. The Smithtown Clay tilts
from north to south. The southern end of the Smithtown Clay ends at Lake Ronkonkoma. The horizontal flow of water above the clay can
cause the ground water to rise and mound in low-lying
significant removal of clay in the correct location(s) on a clay lens may
relive the water pressure above the clay resulting in the water above the clay
draining into the surface below the clay to equalize pressure.
monthly rainfall on Brookhaven labs from 1949 to 2006. Brookhaven Labs is the
closest sampling to our area. The Lab is at similar elevation and is in a North-central Island location similar to o