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A. General Land Use Data
4.
Land Use Change Impacts The negative impacts of development and urbanization on water quality are well documented. Locally, landowners have noticed increased flooding frequency and intensity from upstream land use changes. Areas defined as 100 year floodplains are now flooded several times each decade. Drainage ditches and tile that were designed for agricultural drainage are now forced to receive excessive water that flows from additional roads, rooftops, septic systems, lawns, and parking lots. The larger streams that receive this water are then subject to additional flooding and erosion. In order to accommodate the additional water, stream channels must resize by widening and deepening. The following figure (19) from the Darby Creek Stormwater Management Strategies and Standards for New Development explains how increased impervious surface can affect water quality. Figure 19: Summary of the Impacts of Urbanization
Figure 19: Continued from above
Source: FMSM, 2001. Darby Creek Stormwater Management Strategies and Standards for new development, 13-14
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