In the midst of the Town of Cedarburg, one of the most rapidly developing areas in the region, is a 40-acre tract of ponds, wetland and forest, which serves as a refuge for a variety of wildlife species.

Development threatened this unique tract; it was on the real estate market for residential development for a number of years. In 1999, a local resident concerned with the prospect of subdivision development on the land, approached the OWLT regarding its preservation and management. The resident committed to providing the funds needed to purchase and maintain the site as a natural area. Upon assessing the ecological features of the property, the OWLT agreed to the proposal and acquired the land.

As its name connotes, study of the natural world will be the primary purpose of the site. The OWLT is cooperating with the Cedarburg School District on using the land as an outdoor classroom for science students. Two OWLT board members are working with district science teachers to design educational programs and student projects.

CESA is a nearly 40 acre tract of ponds, wetlands, and forest located in the town of Cedarburg.  It serves as a refuge for a large variety of wildlife species in a rapidly developing area of Ozaukee County.  In addition there is a 3 acre man-made pond.  The environment provides homes to numerous water fowl and amphibians.  The pine and spruce trees create excellent roosts for other wildlife.  On the western side of the property is a 12 acre lowland hardwood forest which floods every spring.

As the name suggests CESA is dedicated to the study of the natural world.  It is ideal for hiking, bird watching and a variety of environmental education activities.  OWLT partners with area school districts to provide science based educational programs and student projects.

On the northwest corner of CTH Y (Granville Road) and CTH T (Western Avenue), Cedarburg, WI

Human subtlety will never devise an invention more beautiful, more simple or more direct than does Nature, because in her inventions nothing is lacking and nothing superfluous.
-- Leonardo da Vinci