E. LAKE WATER QUALITY E1 TRANSPARENCY [m](Q) SITE: Station A YEAR: 1985 Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec 1.0 0.4 3.0 2.0 2.0 1.7 2.8 1.8 4.5 1.8 3.8 4.0 E2 pH (Q) SITE: Station B (E2-E8) YEAR: 1985 Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec ----- Depth [m] 0 7.6 8.1 7.9 8.5 8.9 9.2 8.0 9.3 9.3 8.5 8.0 8.2 10 7.0 8.0 7.8 7.7 7.8 8.1 8.0 8.9 8.4 7.9 8.0 8.0 20 6.9 8.1 7.8 7.2 8.2 8.0 7.8 8.2 8.2 7.9 8.0 8.2 30 6.9 8.0 7.7 - - 8.0 7.7 8.1 7.9 8.1 8.0 8.1 40 - - 7.6 - - 8.2 7.9 - 7.3 - - - E3 SS [mg l-1](Q) Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec ----- Depth [m] 0 - 2 - - 3 - 4 - 3 - 2 10 - - - <1 - 2 - 5 - 5 - - 20 - - - <1 - 3 - 5 - 6 - - 30 - - - - - 2 - 3 - 3 - - 40 - - - - - - - - - 7 - - 45 - - - <1 - - - - - - - - E4 DO [mg l-1](Q) Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec ----- Depth [m] 0 - - 12.2 11.7 9.8 - - 9.8 11.6 10.2 8.0 10.1 10 - - 11.7 10.9 9.6 - - 8.3 9.0 9.2 8.0 - 20 - - 11.2 11.1 6.6 - - 7.0 9.7 9.1 8.3 - 30 - - 10.0 - - - - 5.0 8.1 8.8 8.6 10.3 40 - - 10.2 - - - - - 8.2 - - - E5 COD [mg l-1](Q) Determined by KMnO4 method. Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec ----- Depth [m] 0 - 1.0 - 1.4 - 1.3 - 3.4 - 1.5 - 0.6 10 - - - 0.8 - 1.1 - 1.5 - 1.1 - - 20 - - - 0.8 - 0.5 - 0.8 - 0.7 - - 30 - - - - - 0.6 - 1.1 - 0.7 - - 40 - - - - - - - - - 0.7 - - 45 - - - 0.6 - - - - - - - - E6 CHLOROPHYLL CONCENTRATION [micro g l-1](Q) Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec ----- Depth [m] 0 2.4 3.0 6.1 7.7 6.5 4.1 37.6 4.3 9.3 5.9 4.2 2.2 10 1.4 1.7 0.6 2.3 6.5 2.1 0.9 1.6 3.6 6.3 1.4 1.8 20 1.5 1.5 0.8 2.1 0.4 1.0 0.3 1.2 2.3 1.6 1.8 0.2 30 1.8 1.6 0.7 - - 0.2 0.2 1.7 3.2 2.2 2.3 0.4 40 - - 0.9 - - 0.5 0.1 - 0.4 - - - E7 NITROGEN CONCENTRATION(Q) Total-N [mg l-1] Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec ----- Depth [m] 0 0.20 0.18 0.52 0.34 1.41 0.45 1.15 0.16 0.18 0.33 0.23 0.28 10 0.32 0.16 0.29 0.23 0.40 0.29 0.39 0.22 0.20 0.26 0.24 0.30 20 0.22 0.15 0.35 0.36 0.72 0.31 0.38 0.29 0.31 0.30 0.21 0.35 30 0.23 0.25 0.23 - - 0.51 0.37 0.29 0.36 0.26 0.21 0.29 40 - - 0.29 - - 0.34 0.35 - 0.96 - - - E8 PHOSPHORUS CONCENTRATION (Q) Total-P [mg l-1] Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec ----- Depth [m] 0 0.006 0.012 0.027 0.020 0.011 0.023 0.183 0.010 0.011 0.011 0.008 0.014 10 0.021 0.011 0.015 0.014 0.010 0.006 0.018 0.015 0.006 0.009 0.011 0.019 20 0.007 0.074 0.028 0.026 0.006 0.010 0.016 0.015 0.031 0.010 0.019 0.019 30 0.007 0.106 0.018 - - 0.011 0.007 - 0.028 0.013 0.020 0.019 40 - - 0.038 - - 0.008 0.007 - 0.325 - - -