Memberships
Hey and Associates, Inc retains professional memberships in the following organizations/associations:
| American Academy of Landscape Design |
Illinois Soil Classifiers Association |
| American Academy of Water Resources Engineers | Illinois Lake Management Association |
| American Consulting Engineers Council | Illinois Municipal League |
| American Society of Civil Engineers | Invasive Plants Association of Wisconsin |
| Association of State Floodplain Managers | Illinois Park and Recreation Association |
| Association of States Wetland Managers, Inc. | Illinois Water Resources Association |
| American Water Resources Association | Lake County Contractors Association |
| Chicago Wilderness Corporate Council | Metropolitan Builders Association |
| Certified Professionals in Sediment and Erosion Control, Inc. |
National Association of Home Builders |
| Crystal Lake Chamber of Commerce | North American Lake Management Society |
| DuPage River-Salt Creek Workgroup | National Society of Professional Engineers |
| Fox River Ecosystem Partnership | Openlands |
| Fox Valley Land Foundation | Society of Wetland Scientists |
| Home Builders Association of Greater Chicago | The Conservation Foundation |
| Illinois Association for Floodplain and Stormwater Management |
The Land Conservancy of McHenry County |
| International Erosion Control Association | Upper DesPlaines River Ecosystem Partnership |