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| Title | Water Quality Survey of 25 Citizen-Volunteer Lakes from Washington State | |||
| Month-Year Published | March 1990 | |||
| Online Availability |
15766 kilobytes, requires version 4.0 or later of Adobe Acrobat Reader Software get Acrobat Reader
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| Short Description |
A subset of 25 citizen-volunteer lakes was sampled for conventional water quality parameters to determine their current trophic status and provide a database for statewide assessment. Carlson's trophic state index (TSI) was used to classify each lake. (Also see abstract below) | |||
| Publication Number | 90-e03 | |||
| Author(s) | Brower, C. and W. Kendra | |||
| Print Availability |
Not maintained in stock. Copy must be made from archive version.
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| Number of pages | 65 + app (120 total) | |||
| Keywords | chlorophyll, lake, phosphorus, secchi disk, trophic state index, trophic status, volunteer monitoring, water quality | |||
| Subject Waterbodies |
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| Abstract | Long Description |
A subset of 25 citizen-volunteer lakes was sampled for conventional water quality parameters to determine their current trophic status and provide a database for statewide assessment. Carlson's trophic state index (TSI) was used to classify each lake. This classification system yielded TSI values from 29 to 70, 21 to 80, and -8 to 72 when based on Secchi disk transparency, total phosphorus concentration, and chlorophyll a concentration, respectively. The degree of eutrophication increases as the numerical value increases. Most lakes demonstrated like TSI values based on each of the three parameters. The chlorophyll a parameter was given priority when they were not similar. Ten lakes were considered oligotrophic, eight lakes were mesotrophic, and seven lakes eutrophic. |
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