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1999-10-07_AgendaPacket
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1999-10-07_AgendaPacket
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4/15/2010 3:31:15 PM
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Commission/Committee
Commission/Authority Name
Grass Lake WMO
Commission/Committee - Document Type
Agenda/Packet
Commission/Committee - Meeting Date
10/7/1999
Commission/Committee - Meeting Type
Regular
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ennet Lake <br />Bennett Lake Secchi disk depth has significantly improved over the period of record (p<0.05). <br />Secchi transparencies have improved dramatically from 1995 to 1997 (Figure BL1). Bennett Lake <br />would still fail in the hypereutrophic/eutrophic range in terms of Secchi transparency. Chlorophyll <br />concentrations in Bennett Lake have also improved, but the trend is not statistically significant <br />(p>0.05, Figure BL2). The trend is significant at the 90% confidence level, however (p<0.1). <br />Continued sampling may be required to determine a significant trend at 95% confidence. The lake <br />summer average chlorophyll concentration still falls within the range expected for hypereutrophic <br />systems, but showed improvement to mesotrophic levels in terms of the 1997 summer average. Total <br />phosphorus concentration in Bennett Lake has also improved significantly (p<0.05) over the period <br />of record. Summer average phosphorus concentrations are still indicative of a highly productive (i.e., <br />hypereutrophic) system, however (Figure BL3). <br />grass_lake_intro.doc Page 6 09/27/99 <br />
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