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<br />CONTENTS <br /> <br />Foreword......................................................................................................................................................................... ....... <br /> iii <br /> <br />Abstract................................................................................................................................................................................. <br /> . 1 <br /> <br />Introduction.......................................................................................................................... ................................................. <br /> 1 <br /> <br />Purpose and Scope.......... ..... ................... ........ ............ .......... ......... ..... ....... .......... ..... ............ ....... ......................... ....... <br /> I <br /> <br />Description of Study Unit....................... ..... ..... ..... ............ ....... .......... .......... .............. ..... .................................. .......... 2 <br /> <br />Nitrogen and Phosphorus Data ............. ... .......................... .......... .......... ............ ....... .., ................... .......... .............. ............... <br /> 2 <br /> <br />Sources..................................................................................................................................................................... .... 2 <br /> <br />RetrievaL.................................................................................................................................................................... .. 2 <br /> <br />Screening..................................................................................................................................................................... 2 <br /> <br />Compilation................................................................................................................................................................. 2 <br /> <br />Data-Set Summary................................................................................................................................................................. 5 <br /> <br />Description of Data-Set Diskette .......... ................. ........ ............ ......... ...................... ................. ............................................ 14 <br /> <br />References Cited.................................................................................................................................................................... 14 <br /> <br />FIGURES <br /> <br />I. Map showing location of study unit and sampling sites for nutrient data collection ................................................. 3 <br />2. Graph showing distribution of sampling dates for National Water Information System (NWIS) and <br />STOrage and RETrieval (STORET) surface-water sites for nutrient data collection ................................................ 9 <br /> <br />TABLES <br /> <br />I. Parameter codes for data compiled on data-set diskette ......................................................................................... 4 <br />2. Site identification numbers and site names for map reference numbers in figure I ............................................... 6 <br />3. Number of samples collected per site and number of samples collected per site for each of the five <br /> <br />combined nutrient parameters ................................................................................................................................. II <br /> <br />[Data-Set Diskette in Pocket] <br /> <br />CONVERSION FACTORS AND VERTICAL DATUM <br /> <br />Multiply <br /> <br />By <br /> <br />To obtain <br /> <br />cubic foot per second (ft3/s) <br />mile (mi) <br /> <br />0.028 <br />1.609 <br /> <br />cubic meter per second <br />kilometer <br /> <br />Degree Celsius (oC) may be converted to degree Fahrenheit (OF) by using the following equation: <br />OF = (1.8 x oc) + 32 <br /> <br />CONTENTS v <br />