Nassau County Soil & Water Conservation District provides “on the ground” assistance for soil and water resources, preservation of wildlife, and promote the health, safety, and welfare of residents in their respective communities.

The Nassau County Soil and Water Conservation District office is located inside the Muttontown Preserve at 1864 Muttontown Road, Syosset, NY 11791 


Nassau County is a unique place to live and work. The glaciers created the topography of Long Island that we know today. The Native Americans, the island's first inhabitants, lived here for the great climate, abundant marine life, and its forests and soil for growing crops. Protecting wildlife in Nassau County is particularly important as Long Island serves as a key refuling area for many migratory birds. We help support native wildlife in many ways; creating homes for pollinators like bats, using native plants in our restorations and gardens to supply local wildlife with an essential food source. 

Native and Invasive Species Education

Long Island is home to many native bat species. Nassau County SWCD recently planted a Bat Box in Pond Park, Great Neck Estates.


Once established this will provide a vital habitat for native Little Brown Bats (Myotis lucifugus). Native bat species help control populations of mosquito, beetles and other pests, a single little brown bat can catch 600 mosquitoes in just one hour! Bats also help with pollination.

Water Quality Improvements

Planting for Clean Water 

Nassau County SWCD helped build Rain Gardens with the help of a grant from the National Fish and Wildlife Foundation. Helping reduce pollution and excess nutrients carried by stormwater. These gardens were strategically located in areas with impermeable surfaces to collect the most stormwater runoff. 

Nassau County At a glance

Long Island’s water supply is underground aquifers. The contour of the aquifer system is roughly the same as the land surface. The water table is closest to the surface at the terminal moraine and deeper at the coasts. The upper glacial is the closest to the surface and made up of sand and gravel from the last glacier. The deeper aquifers are the Jameco, Magothy and the Lloyd. The Lloyd is the deepest and rests on bedrock.


Ecological Restoration at Mill Pond 

Nassau County SWCD helped restore the coastline at Mill pond by removing invasive plants threatening the health of the coastline. The area was replanted with Spartina alterniflora also known as cordgrass (an essential native  deciduous grass that is a perennial found in many intertidal wetlands) to help reduce erosion and improve water quality.