A. General Land Use Data

3. Land Use Change

In the past twenty years both Hellbranch in Franklin County and Flat Branch in Logan County experienced considerable land use change.  The amount of residential and commercial land in these two subwatersheds is much higher than any other subwatersheds.  For example, Flat Branch has a higher percent of commercial land use than all other subwatersheds combined which is attributed to Honda and related companies.  Additionally, the percent of residential land in the Hellbranch subwatershed in 2001 was over twice that of the second most residential subwatershed.  Figure 18 is part of the Darby Creek Stormwater Management Strategies and Standards for New Development created by Fuller Mossbarger, Scott, and May Engineers (2001).  The following figure summarizes scientific research that explored the relationship of impervious surface created by development to declining water quality and aquatic habitat. 

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Last updated: April 7, 2009.