Kane County ADID Home Page Benefits of Wetlands, Lakes, and Streams Advanced Identification (ADID) Protection and Management What Does ADID Mean to You? Kane County ADID Final Report

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KANE COUNTY
Advanced Identification of Wetlands (ADID)
The Advanced Identification (ADID) Program
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Advanced Identification, or ADID, is an EPA program designed to provide improved awareness of the locations, functions and values of wetlands and other waters of the U.S. More specifically, it is intended to inform landowners, developers, and local governments that it may not be appropriate to fill or drain certain high quality wetland sites. ADID projects also can provide guidance on strategies for long-term protection and management of aquatic resources in an area.

In Kane County, ADID is a multi-agency effort that is being advised by a Policy and Planning Committee (PPC) composed of numerous local organizations. The ADID study is utilizing experts in wetland biology, soil science, engineering, water quality, and computerized mapping.

The ADID team and its advisors determined that two categories of wetland and waterbody functions are of critical importance in Kane County: biological/habitat functions and water quality/stormwater storage functions. Evaluation methodologies are being developed for these functions and individual wetlands and waterbodies will be evaluated.

Biological functions include wildlife habitat, floristic diversity, stream aquatic habitat, and lake aquatic habitat. Factors that are being considered in the identification of high quality wetlands include:

  • the presence of threatened or endangerd plant or animal species;
  • designation in the Illinois or Fox River Natural Areas Inventory (NAI);
  • field evaluation as a grade A, B, or C wetland community following NAI methods;
  • streams with Index of Biotic Integrity (IBI) scores of 41 or greater
  • streams with high quality physical habitat; and
  • healthy lake ecosystems with rich/diverse fish and plant communities.

Water quality/stormwater storage functions include shoreline and streambank stabilization, sediment and toxicant retention, nutrient removal and transformation, and stormwater storage and hydrologic stabilization. Factors that are being considered for designating high functional value for water quality/stormwater functions include:

  • presence of stabilizing vegetation adjacent to an open waterbody or perennial stream;
  • having characteristics that indicate an ability to retain sediments/toxicants;
  • having characteristics indicating the likelihood of nutrient removal/transformation; or
  • having characteristics indicating significant stormwater retention.

The details of this methodology are being developed by a Technical Advisory Committee (TAC).