ESTIMATION OF RUNOFF POLLUTANT LOAD FROM NONPOINT SOURCE IN URBAN AREAS

Nonpoint-Source Pollutant Load Reductions Associated with Livestock Exclusion

Cattle (Bos taurus) grazing on unimproved pastures can be a significant, yet often overlooked, source of pollutants to surface waters, especially when the cattle have unlimited access to streams in the pastures. Livestock exclusion from streams has been demonstrated to reduce sediment and possibly nutrient yield from streams draining pastures. The purpose of this study was to evaluate the effec...

Snowmelt Runoff: A New Focus of Urban Nonpoint Source Pollution

Irregular precipitation associated with global climate change had been causing various problems in urban regions. Besides the runoff due to rainfall in summer, the snowmelt runoff in early spring could also play an important role in deteriorating the water quality of the receiving waters. Due to global climate change, the snowfall has increased gradually in individual regions, and snowstorms oc...

Modeling pollutant release from a surface source during rainfall runoff.

Though runoff from manure spread fields is recognized as an important mode of nonpoint-source pollution, there are no models that mechanistically describe transport from a field-spread manure-type source. A mechanistic, physically based model for pollutant release from a surface source, such as field-spread manure, was hypothesized, laboratory tested, and field-applied. The primary objective of...

Offset Banking – A Way Ahead for Controlling Nonpoint Source Pollution in Urban Areas in Georgia

Offset Banking – A Way Ahead for Controlling Nonpoint Source Pollution in Urban Areas

Nonpoint source discharges remain one of the major causes of non-attainment of water quality goals in urban areas in the United States. Controlling nonpoint source discharges is a critical part of achieving water quality goals within urban areas. Efforts to reduce nonpoint discharges are expected to intensify with implementation of Total Maximum Daily Loads (TMDLs) and changes to National Pollu...