Suppose impurity enters a channel and visibly alters the odour at one point. That portion is affected and cannot be treated as unaffected running water.
A different flowing section with no remaining relevant effect is assessed separately under the running-water rule.
Flow and persistence of the impurity’s effect are distinct factors, both of which matter.
Opening interactive controls...
Impurity in Stagnant and Running Water, Large Ponds, and Aquatic Creatures
Suppose impurity enters a channel and visibly alters the odour at one point. That portion is affected and cannot be treated as unaffected running water.
A different flowing section with no remaining relevant effect is assessed separately under the running-water rule.
Flow and persistence of the impurity’s effect are distinct factors, both of which matter.