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Table 4 -5. Land cover change in Wake County, North Carolina for the period 1992 -2001 derived from the <br />National Land cover Database (NLCD) 1992/2001 Retrofit Land Cover Change Product (Fry et al. 2009). <br />Percentage of total area is indicated in parentheses. <br />1i miWii "xi C, ,,DDV4ii°r Class ss <br />Acres 1992 <br />/P'0.cres 200 II <br />lIel6c�eInN Oil <br />Open Water <br />63,037 <br />(2.6 %) <br />66,503 <br />(2.7 %) <br />5.5% <br />Urban <br />624,842 <br />(25.4 %) <br />729,958 <br />(29.6 %) <br />16.8% <br />Barren <br />3,134 <br />(0.1 %) <br />3,742 <br />(0.2 %) <br />19.4% <br />Forest <br />1,149,219 <br />(46.6 %) <br />1,018,701 <br />(41.3 %) <br />-11.4% <br />Grassland /Shrub <br />141,386 <br />(5.7 %) <br />172,978 <br />(7.0 %) <br />22.3% <br />Agriculture <br />407,881 <br />(16.6 %) <br />396,278 <br />(16.1 %) <br />-2.8% <br />Wetlands <br />74,929 <br />(3.0 %) <br />76,268 <br />(3.1 %) <br />1.8% <br />Urban p th Carolina, <br />e <br />2, <br />a � <br />Iff 5 <br />Pkrc tm ban impawktsness Aram (he N Nu'W Land Gym, D kNLCUC 2H I Piapwad by (jaknders A'011d i'f° <br />e W inservatn PY rain Ip. ra¢r� <br />U1,7d S <br />) ju �y 4cl a <br />Map P%i.4, D-Awr I NjAh GaYrYDW w a AP, PDaire ftikD 19033 'u 1""rriOQ4 WuD"Ar ffi u ° a as r.�hd� Mr u' 4a�1r,a� <br />Figure 4 -4. Map of urban imperviousness for North Carolina based on the National Land Cover Database <br />(NLCD) 2001 Impervious Surface derivative (Homer et al. 2004). <br />