Groundwater and stream response times to fertility management changes in pastures.

The article focuses on the a study on the effects of best management practices (BMPs) on water quality and response times between small watersheds and medium-sized watersheds, which was analyzed using the data from the North Appalachian Experimental Watershed in Coshocton, Ohio. It states that on the hydrologic systems evaluated, once the groundwater discharge emerged on the land surface below the small watersheds, it quickly entered or produced perennial streams in the medium watersheds of which they were part of. Thus, the nitrate-nitrogen concentration patterns observed from pasture systems, were soon observed in the stream base flow.