Abstract
Elevated concentrations of nitrate and Escherichia coli (E. coli) in Lindsay Creek within the Lewiston Basin in North Central Idaho have led to some residents abandoning private wells for drinking water due to health concerns. The objective of our study was to determine the spatial and temporal contribution of E. coli from various cattle and human sources and to assess how the hydrology of Lindsay Creek affects nutrient dynamics within the watershed. The results of this study will facilitate targeted water quality remediation efforts that focus on managing specific sources of pollution and implementing best management practices at locations where remediation will be most effective to reduce nutrient and bacteria contamination.