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I <br /> Pf^.urve Numbers <br /> i <br /> USE DESCRIP'fION CURVE NUMBERS BY <br /> HYDROLOGIC SOIL GROUP 'x' <br /> 4::` <br /> A B C D ��` <br /> ,.,,�! <br /> winter condition E6 9l 94 95 �:� <br /> low growing bnis6&grassl�nds 74 82 89 92 <br /> � 65 78 5 89 � <br /> undisturbed d2 64 76 81 <br /> young second growth or brush 55 72 81 86 <br /> with cova crop 81 88 92 94 � <br /> t <br /> ' Fl <br /> inP etc.) ` � I <br /> � grass cover on>75%of arca 68 80 86 90 � � c <br /> grass cover on 50-75%of area 77 85 90 92 �' � � <br /> in ;ou � ?6 85 89 91 � �.� � <br /> g i ; 72 82 87 89 = � j � <br /> pavement,roofs,etc. 98 98 98 98 " � � <br /> lekes,wetlends,ponds,etc. 100 100 100 I00 ` f � ` <br /> tial�1) 3 � i <br /> A -- %Impervious :.. � � f <br /> � 15 Separate curve �x � � � <br /> 20 numbers must ,_. � j � � <br /> 25 be selected for <br /> 30 pervious and �3 � � f 1 <br /> 34 impervious r f s � <br /> I 38 portions of the `� } ' � € � <br /> � � <br /> 42 site or basin � : ; <br /> � ^ r <br /> 46 �r � <br /> I 48 (.��T` t <br /> � . <br /> 50 f'j� f t <br /> ( 52 I �* ' i <br /> 54 = <br /> 56 <br /> al � <br /> IF <br /> s i alues assume that roof and driveway runoff is directed into the streeVstorm system J ' '' <br /> I <br /> I 1-5-33 <br /> � <br />