ESTIMATING SOLUTE TRANSPORT IN STREAMS FROM GRAB SAMPLES

Several combinations of weighting procedures and schedules of sample collection resulted in substantial differences in calculated P transport by Fall Creek, New York. Calculation of P flux using regressions of concentration on flow are the most satisfactory for grab sample studies where solute concentration is correlated with stream discharge because regressions account for solute export at the highest flows better than other methods. Acceptable estimates of yearly solute flux in a stream can probably be obtained from samples collected weekly and representing all flow stages. Copyright 1979 by the American Geophysical Union.