Evaluating the Trophic Status and Setting Nutrient Protection Endpoints in Utah Lakes and Reservoirs (with) Appendix D: Additional Graphs and Data (CD-ROM)

ELECTRONIC FILE CHARACTERISTICS: 33 files; Text and database; Adobe PDF, MS Access, MS Excel, MS PowerPoint, and PostScript. PHYSICAL DESCRIPTION: 1 computer laser optical disc (CD-ROM); 4 3/4 in.; 50 MB. SYSTEMS DETAIL NOTE: IBM-clone PC-compatible; requires Adobe Acrobat Reader. ABSTRACT: This thesis scrutinized the Carlson trophic state index as a tool for classifying the trophic state of Utah lakes and reservoirs, and for setting nutrient protection endpoints. Correlations of total phosphorus, Secchi depth, and chlorophyll-a data from 132 Utah lakes and reservoirs revealed that Utah waterbodies in general do not follow the Carlson trophic state index. Despite this the Carlson trophic state index was shown to be a useful tool for evaluating the trophic status of Utah waterbodies, setting in-lake chlorophyll-a endpoints, and for assessing water quality trends. Using linear discriminant analysis techniques, this research was unable to determine if certain waterbody physical characteristics limit the application of Carlson's trophic state index. The Vollenweider-OECD eutrophication model was applied to three Utah reservoirs and found to be useful as a screening tool for developing total maximum daily load allocations for total phosphorus. Report (thesis) is accompanied by Appendix D on CD-ROM. Entire thesis is also on the disc. For individual articles, see thru