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Amelia Lake <br />Amelia is located in Anoka County and is approximately 217 acres. Maximum depth for the lake is 3 feet. The <br />majority of agriculture land left in the watershed is near Amelia Lake. Due to a lack of volunteers, VLAWMO staff <br />collected samples from Amelia in 2007. Floating bogs at our access point hampered our ability to get on the lake. <br />Additionally, the thick layer of muck at the bottom of the lake makes it impossible to walk out into the water for a <br />sample when our canoe cannot get past the floating bogs. Therefore, only 3 days of DO and temperature data were <br />collected and some water samples were collected off the shore with a bottle attached to a nine foot pole. VLAWMO <br />will continue to search for alternative access points so as to retrieve as many samples as possible through the season. <br />The TP & Chl A data shows a significant rise in mid -summer and a markedly upward trend when compared with <br />other years' averages. The cause of this is unknown at this time but factors could include, changes in land use, <br />weather conditions, sampling error and/or laboratory error. Further study will help in our understanding of what may <br />be happening with this water body. <br />No graph is included with the DO & Water Temp chart due to a lack of data. Hopefully VLAWMO staff will be able <br />to access the lake more frequently in 2008. <br />Amelia 2007 DO & Water Temp Data <br />Date <br />Air Temp <br />(°C) <br />Depth (m) <br />Water Temp <br />(°C) <br />Dissolved Oxygen <br />(mg/L) <br />Avg DO (mg/L) <br />Avg temp (°C) <br />5/15/2007 <br />12.8 <br />1 <br />18.3 <br />5.8 <br />6.68 <br />18.2 <br />0.5 <br />18.2 <br />7.08 <br />surface <br />18.1 <br />7.15 <br />6/12/2007 <br />23.9 <br />0.5 <br />24.7 <br />8.11 <br />7.83 <br />24.9 <br />surface <br />25.1 <br />7.55 <br />7/3/2007 <br />21.1 <br />23.2 <br />7.1 <br />6.9 <br />23.35 <br />su0rface <br />23.5 <br />6.7 <br />