Sarah Brunsvold and Kasey Marley Faculty Mentor: Dr. Zuhdi Aljobeh Department of Civil Engineering Valparaiso University.

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Presentation transcript:

Sarah Brunsvold and Kasey Marley Faculty Mentor: Dr. Zuhdi Aljobeh Department of Civil Engineering Valparaiso University

Background A dynamic model can be used to predict the water quality of Brewster Lake over time for different conditions It will help PCCI staff in making decisions about the conservation and preservation of the lake and its watershed This research is a continuation of last summer’s limited dissolved oxygen model developed by Argueta and Aljobeh 2PCCI Summer 2013

Objectives Develop a dynamic water quality model for Brewster Lake based on: Mathematical equations representing the lake’s water quality The lake’s watershed hydrodynamics The lake’s water chemical and biological analyses Compare the water quality of Brewster Lake with similar-sized lakes in the area 3PCCI Summer 2013

Field Work 2 cross sections 14 water columns 3 sampling depths N-S E-W 4PCCI Summer 2013

Field Work 2 cross sections 14 water columns 3 sampling depths 5PCCI Summer 2013

Field Work 2 cross sections 14 water columns 3 sampling depths 1 ft below surface 1 ft above bottom Mid-point 6PCCI Summer 2013

Field Work 2 cross sections 14 water columns 3 sampling depths YSI Unit Dissolved Oxygen Temperature pH Conductivity Water Sampler GPS Unit 7PCCI Summer 2013

Lab Work 8 Parameters Total Nitrogen Total Phosphorus Reactive Phosphorus Ammonia Nitrates Chemical Oxygen Demand Biochemical Oxygen Demand Total Organic Content 8PCCI Summer 2013

Results – E/W Field Values PCCI Summer 20139

Results – E/W Lab Values PCCI Summer

Results – N/S Field Values PCCI Summer

Results – N/S Lab Values PCCI Summer

What’s Next? These results will be used as part of the finite element solution of the model - the initial conditions A second round of sampling will be conducted by the end of July These new results will be used to calibrate the model and correct any errors Need to collect boundary condition measurements Hydrodynamics – runoff, groundwater interaction, and evaporation 13PCCI Summer 2013

Acknowledgements Pierce Cedar Creek Institute Dr. Hugh Brown Mr. Matt Dykstra Valparaiso University PCCI Summer

PCCI Summer