3 ) The above watershed given in Q# 2 is heavily modified (Urbanized) as shown below in the Table. a. Calculate the BDF for given condition (8 points). (If you do in Excel, just show an example for Ratio calculations hand written or typed)

Subarea Area Main Channel Secondary Tributaries Road Channel Improved Channel Lined Storm Drains Curb and Gutter mi mi mi mi mi mi mi mi 4.8 4.5 1.2 2 Upper Middle 7.2 6.2 7.3 7.43 8.2 3 2.54 3.2 4.3 6 5 4.5 4 Lower 10 7 4 2.3 2.01 6 1