Record Display for the EPA National Library Catalog
RECORD NUMBER: 31 OF 38
|OLS Field Name||OLS Field Data|
|Main Title||Simulation model for watershed management planning|
|Author||Simons, D. B. ; Li, R-M. ; Eggert, K. G. ; Ho, J. N-H. ; Fullerton, W. T.|
|CORP Author||Colorado State Univ., Fort Collins. Dept. of Civil Engineering.;Environmental Research Lab., Athens, GA.|
|Publisher||U.S. Environmental Protection Agency, Environmental Research Laboratory ;|
|Report Number||EPA 600/3-84-028a ; PB84-158153; EPA-R-805131; EPA-600/3-84-028A|
|Subjects||Watershed management--United States|
|Additional Subjects||Land use ; Watersheds ; Water pollution ; Agriculture ; Forestry ; Fluid infiltration ; Mathematical models ; Sediment transport ; Water flow ; Stream erosion ; Embankments ; Nutrients ; Nitrification ; Adsorption ; Temperature ; Surface water runoff ; Snowmelt ; Radiation ; Water balance ; Evapotranspiration ; Biochemical oxygen demand ; Soil water plant relationships ; Nonpoint sources|
|Collation||2 v. : ill. ; 28 cm.|
Evaluation of nonpoint source pollution problems requires an understanding of the behavioral response to an ecosystem to the impacts of land use activities on individual components of that ecosystem. By analyzing basic ecosystem processes and impacts of land use activities on specific factors governing production and transport of nonpoint source pollution, it is possible to predict cause-effect relationships between these activities and water quality. To facilitate these predictions, a simulation model for evaluation of alternative agricultural and silvicultural practices as a function of both environmental and management parameters was developed. Nonpoint source pollution from these activities and events may include loading of streams by: sediment from surface erosion, mass wasting, channel bottom and bank erosion; thermal energy; biological oxygen demanding contaminants; organic debris; nutrients and dissolved solids; pesticides; and other waste materials either in solution or adsorbed tp sediments. The model consists of a soil-plant-atmospheric water component for adjusting soil moisture as a function of evaporation, evapotranspiration, soil-water hydraulics, and snowmelt.
"February 1984." "EPA-600/3-84-028a.--v.1." "PB84-158153." Includes bibliographical references.
v. 1. Model theory and formulation -- v. 2. Model user manual.