Dynamic lake water quality model for the evaluation of lake treatment alternatives

Thesis/Dissertation · Fri Jan 01 00:00:00 EST 1988

OSTI ID:5408351

Riley, M J

A computer model which simulates several water quality parameters in a stratified lake during the main growth season has been developed. The model is process oriented and simulates heat transfer, light penetration, mixing by wind and natural convection, inflow and outflow, settling of particles and several biological and chemical processes related to primary productivity. In the simulation, the lake is subdivided into up to 40 layers of variable thickness. Typically, layer thickness is between 0.5 and 1.0 meters. The timestep of the simulation is one day. Input to the simulation includes daily weather parameters, lake morphometry, inflow rate, and inflow quality. Output consist of daily vertical distribution of water temperature, dissolved oxygen, suspended solids, up to three forms of phytoplankton, up to three forms of phosphorus and two forms of nitrogen. Graphical output is provided in the form of profiles on particular dates or time series plots at particular depths. Application of the model to three Minnesota lakes are presented.

• Research Organization: Minnesota Univ., Minneapolis, MN (USA)
• OSTI ID: 5408351
• Resource Relation: Other Information: Thesis (Ph. D.)
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
LAKES
WATER POLLUTION
MINNESOTA
WATER QUALITY
MATHEMATICAL MODELS
FLOW RATE
NITRATES
PHOSPHORUS COMPOUNDS
PHYTOPLANKTON
TEMPERATURE DISTRIBUTION
WEATHER
AQUATIC ORGANISMS
ENVIRONMENTAL QUALITY
FEDERAL REGION V
NITROGEN COMPOUNDS
NORTH AMERICA
OXYGEN COMPOUNDS
PLANKTON
POLLUTION
SURFACE WATERS
USA
520200* - Environment
Aquatic- Chemicals Monitoring & Transport- (-1989)