2017 National Land Trust Alliance Excellence Award
2016 Connecticut Land Conservation Council (CLCC) Land Trust Advancement Initiative Program Award for GIS mapping and development of a management plan for the Avery Farm Nature Preserve and Candlewood Ridge.
2015 Connecticut Land Conservation Council and the Land Trust Alliance Connecticut Land Trust Record Keeping Project Award for improving records management systems.
2014 Official statement by Her Excellency Nancy Wyman, Connecticut Lieutenant Governor congratulating Sidney Van Zandt on the 2014 USDA NRCS Women in Conservation Award.
2014 USDA Natural Resources Conservation Service 2014 Women Inspiring Conservation Award to Sidney Van Zandt for her “collaborative work, especially through the formation of the Groton Open Space Association in 1967, has helped to build a community around land preservation in our state.
2014 Certificate of special recognition from U. S. Senator Blumenthal to Sidney Van Zandt
2014 State of Connecticut General Assembly – Official Citation, recognized Sidney Van Zandt
“for the more than 40 years she “fought to preserve the scenic beauty of our natural surroundings and defend the ecological integrity . As a result, hundreds of acres of unspoiled land are now under public ownership or enjoy conservation status as a permanent legacy for the people of Connecticut.”
2014 The 2014 Katchen Coley Award for Excellence in Land Conservation to Sidney Van Zandt for her decades of outstanding service to the conservation movement — Connecticut Land Conservation Council
2011 Excellence in Land Conservation Award for Outstanding Land Acquisition Effort for the Sheep Farm – Connecticut Land Conservation Council
2002 Town of Groton Town Council Proclamation for GOSA’s role in “32 year long struggle to add 57 acres to the Haley Farm State Park”
1999 Green Circle Award – State of CT DEP for ongoing stewardship at Haley Farm, including annual field mowing since 1985