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<br />3 <br /> <br />This study 18 qualitative due to the selectivity of the <br />"arious types ot fiah collecting equ1pD18nt. <br /> <br />De.f1n1 t10ns <br />stream pollution The introduction of substances into a <br />stream which make the waters abnormal in comparison with nomal, <br />undisturbed waters (Reid, 1961). <br />High water period That portion of the year beginning with <br />the first increased spring run-off and arbitrarily ending on July 31. <br />~ water period That portion of the year beginning arbi- <br />trarily on August 1 and ending with the first increased spring run-oft. <br /> <br />