E. LAKE WATER QUALITY SITE: Lake Center YEAR: FY2015 E1 TRANSPARENCY [m](8) Month Apr May Jun Jul Aug Sep Oct Nov Dec Jan Feb Mar -------------------------------------------------------------------------------------------------------------- 1.3 1.0 1.1 1.0 0.9 0.9 1.0 1.1 1.5 3.0 1.8 1.9 E2 pH (8) Month Apr May Jun Jul Aug Sep Oct Nov Dec Jan Feb Mar -------------------------------------------------------------------------------------------------------------- Depth [m] 0.5 7.1 9.6 9.6 9.1 9.5 9.1 8.8 8.1 7.8 7.6 7.5 8.2 5.3 6.9 8.6 7.9 8.5 7.4 7.4 7.9 7.6 7.3 7.6 7.3 7.9 E3 SS [mg l-1] Month Apr May Jun Jul Aug Sep Oct Nov Dec Jan Feb Mar -------------------------------------------------------------------------------------------------------------- Depth [m] 0.5 12.0 18.0 7.0 13.5 9.0 15.0 15.5 13.5 5.5 2.5 6.0 3.0 5.3 14.0 32.5 7.0 13.5 9.5 10.0 25.0 12.5 7.5 3.0 5.5 4.0 E4 DO [mg l-1] Month Apr May Jun Jul Aug Sep Oct Nov Dec Jan Feb Mar -------------------------------------------------------------------------------------------------------------- Depth [m] 0.5 10.0 9.9 9.7 9.4 10.0 11.0 10.5 9.4 10.0 11.0 11.5 12.0 3.5 10.0 8.0 1.8 5.2 1.0 6.0 8.3 7.9 9.9 11.0 12.0 11.5 E5 COD [mg l-1] Month Apr May Jun Jul Aug Sep Oct Nov Dec Jan Feb Mar -------------------------------------------------------------------------------------------------------------- Depth [m] 0.5 3.6 4.8 5.1 6.3 8.3 7.8 5.9 3.9 3.3 2.6 3.0 2.7 3.5 3.8 5.5 3.9 4.7 4.4 3.4 5.7 4.5 3.0 2.6 3.0 2.8 E7 NITROGEN CONCENTRATION (8) Total-N [mg l-1] Month Apr May Jun Jul Aug Sep Oct Nov Dec Jan Feb Mar -------------------------------------------------------------------------------------------------------------- Depth [m] 0.5 0.92 0.70 0.77 0.85 0.88 1.2 0.77 0.47 0.60 0.55 1.3 0.91 5.3 1.0 1.2 1.2 0.80 0.99 1.0 0.87 0.58 0.66 0.61 1.2 0.97 E8 PHOSPHORUS CONCENTRATION (8) Total-P [mg l-1] Month Apr May Jun Jul Aug Sep Oct Nov Dec Jan Feb Mar -------------------------------------------------------------------------------------------------------------- Depth [m] 0.5 0.052 0.054 0.052 0.062 0.049 0.075 0.070 0.050 0.034 0.023 0.047 0.030 5.3 0.067 0.10 0.068 0.054 0.11 0.071 0.080 0.059 0.037 0.032 0.048 0.034 SITE: Station 1 YEAR: 1983-1985 E1 TRANSPARENCY [m](8) Month Jan Feb Mar* Apr May Jun Jul Aug Sep Oct Nov Dec -------------------------------------------------------------------------------------------------------------- - - 1.5 1.6 1.5 1.4 0.80 0.60 0.52 0.74 1.2 1.5 * 1984-1985. E2 pH (8) Month Jan Feb Mar* Apr May Jun Jul Aug Sep Oct Nov Dec -------------------------------------------------------------------------------------------------------------- Depth [m] 0.5 - - 8.3 8.1 8.2 7.4 9.6 9.4 8.6 8.4 8.0 7.9 5 - - 8.2 7.7 7.7 7.1 8.0 6.7 6.8 7.6 7.5 7.9 * 1984-1985. E3 SS [mg l-1](8) Month Jan Feb Mar* Apr May Jun Jul Aug Sep Oct Nov Dec -------------------------------------------------------------------------------------------------------------- Depth [m] 0.5 - - 11 7 5 7 21 19 25 15 10 8 5 - - 7 5 5 8 9 12 17 14 11 9 * 1984-1985. E4 DO [mg l-1](8) Month Jan Feb Mar* Apr May Jun Jul Aug Sep Oct Nov Dec -------------------------------------------------------------------------------------------------------------- Depth [m] 0.5 - - 12 11 9.7 9.4 13.7 12 8.7 9.0 9.5 11 5 - - 13 9.7 7.0 5.2 6.1 2.6 4.5 7.6 9.4 11 * 1984-1985. E5 COD [mg l-1](8) Determined by KMnO4 method. Month Jan Feb Mar* Apr May Jun Jul Aug Sep Oct Nov Dec -------------------------------------------------------------------------------------------------------------- Depth [m] 0.5 - - 5.6 3.6 3.8 4.4 8.4 8.1 11.9 6.5 4.2 4.4 5 - - 3.6 2.7 3.6 3.7 3.7 4.8 6.9 4.5 4.2 4.4 * 1984-1985. E6 CHLOROPHYLL CONCENTRATION [micro l-1](8) Month Jan Feb Mar* Apr May Jun Jul Aug Sep Oct Nov Dec -------------------------------------------------------------------------------------------------------------- Depth [m] 0.5 - - 59 33 24 23 90 193 101 39 36 54 5 - - 41 17 32 14 26 18 28 25 38 45 * 1984-1985. E7 NITROGEN CONCENTRATION (8) Total-N [mg l-1] Month Jan Feb Mar* Apr May Jun Jul Aug Sep Oct Nov Dec -------------------------------------------------------------------------------------------------------------- Depth [m] 0.5 - - 0.69 1.5 1.0 0.80 1.8 2.8 1.4 1.5 0.94 0.59 5 - - 1.2 1.4 1.2 0.94 0.98 1.4 0.97 1.3 1.0 0.76 * 1984-1985. E8 PHOSPHORUS CONCENTRATION (8) Total-P [mg l-1] Month Jan Feb Mar* Apr May Jun Jul Aug Sep Oct Nov Dec -------------------------------------------------------------------------------------------------------------- Depth [m] 0.5 - - .097* .047 .053 .062 .10 .19 .18 .090 .059 .059 5 - - .010 .050 .066 .070 .064 .091 .15 .089 .068 .059 * 1984-1985.