Board of Directors

PDHA By-Laws


The Pierce Downers Heritage Alliance has an action oriented philosophy. We are involved in numerous projects to directly affect the preservation of our natural and cultural heritage.  From organizing work parties for the "Highway Adoption Program," to a continuing involvement in Lyman Woods and Belmont Prairie, the Alliance gets involved hands-on.

Click here to request more information.

Lyman Woods
PDHA is active in supporting projects, activities, and programs at Lyman Woods. Members volunteer at the interpretation center, assist in cutting brush, cleaning trails, and monitoring wildlife activity. 

Belmont Prairie
Belmont Prairie is a surviving tall grass prairie and dedicated Illinois Nature Preserve, which PDHA has worked to protect for future generations. Continuing threat of encroachment requires constant monitoring and preparedness for action.

Knotweed & Stiltgrass Eradication Effort
The Downers Grove Park District, the Forest Preserve District of DuPage County, and Sanitary District are all working together to eradicate Japanese knotweed & Japanese stiltgrass from Downers Grove. Fact Sheets are provided below to help you identify if you have these plants in your backyard. These plants are very invasive along St. Joseph’s Creek. Karen Daulton Lange is heading up this effort for the Public Works Department and can be reached at for questions.
Click here for fact sheet about Japanese knotweed.
Click here for fact sheet about Japanese stiltgrass.