E. LAKE WATER QUALITY (Q) E1 TRANSPARENCY [m] SITE: Station 1 YEAR: 1985-1986 Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec -------------------------------------------------------------------------------------------------------------- Depth [m] - 3.1 - 3.5 2.8 3.9 4.3 3.8 3.3 3.3 4.0 3.5 4.3 E2 pH Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec -------------------------------------------------------------------------------------------------------------- Depth [m] 0.5 7.4 - 7.6 7.6 7.6 7.6 7.7 7.8 7.8 7.6 7.5 7.5 8.5 7.5 - 7.6 7.6 7.6 7.5 7.7 7.6 7.8 7.6 7.5 7.5 16.0 7.5 - 7.6 7.5 7.5 7.4 7.2 7.1 7.0 7.2 7.6 7.5 E3 SS [mg l-1] Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec -------------------------------------------------------------------------------------------------------------- Depth [m] 0.5 2 - 1 3 2 2 2 2 2 2 1 1 8.5 2 - 2 4 3 2 2 2 2 1 2 6 16.0 2 - 1 3 2 1 2 1 1 <1 1 1 E4 DO [mg l-1] Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec -------------------------------------------------------------------------------------------------------------- Depth [m] 0.5 13 - 13 13 10 9.8 9.0 8.5 8.3 7.9 9.7 12 8.5 13 - 12 12 10 9.1 8.6 7.6 7.9 8.6 9.6 12 16.0 13 - 13 12 9.6 8.5 5.3 3.6 3.6 5.0 9.6 12 E5 COD [mg l-1] Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec -------------------------------------------------------------------------------------------------------------- Depth [m] 0.5 3.1 - 3.3 3.1 2.4 2.8 2.3 2.9 2.5 2.6 2.5 2.6 8.5 3.3 - 3.4 3.2 2.6 3.1 2.4 2.8 3.5 2.8 2.7 2.6 16.0 3.3 - 3.7 3.2 2.4 2.8 1.9 1.9 3.1 2.8 2.5 3.1 E6 CHLOROPHYLL CONCENTRATION [micro l-1] Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec -------------------------------------------------------------------------------------------------------------- Depth [m] 0.5 17.0 - 6.0 21.7 5.4 6.9 5.0 12.1 15.7 2.9 2.7 5.1 8.5 15.0 - 6.4 19.9 4.6 3.3 4.5 9.9 12.7 2.7 2.4 4.1 16.0 15.0 - 5.9 16.7 4.3 2.0 2.0 2.6 2.0 2.1 2.3 4.2 E7 NITROGEN CONCENTRATION Total-N [mg l-1] Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec -------------------------------------------------------------------------------------------------------------- Depth [m] 0.5 0.65 - 0.93 0.81 0.65 0.60 0.58 0.52 0.41 0.67 0.51 0.67 8.5 0.91 - 0.91 0.82 0.71 0.62 0.59 0.57 0.54 0.62 0.53 0.66 16.0 0.91 - 0.89 0.83 0.69 0.73 0.67 0.67 0.61 0.70 0.49 0.64 E8 PHOSPHORUS CONCENTRATION Total-P [mg l-1] Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec -------------------------------------------------------------------------------------------------------------- Depth [m] 0.5 0.029 - 0.031 0.014 0.013 0.017 0.014 0.016 0.016 0.010 0.022 0.031 8.5 0.028 - 0.032 0.019 0.015 0.014 0.012 0.014 0.013 0.012 0.022 0.038 16.0 0.034 - 0.031 0.013 0.012 0.021 0.024 0.017 0.013 0.028 0.023 0.036 E9 CHLORIDE CONCENTRATION [mg l-1] Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec -------------------------------------------------------------------------------------------------------------- Depth [m] 0.5 840 - 695 693 651 640 617 491 532 640 747 768 8.5 840 - 721 710 642 625 607 510 543 641 746 767 16.0 846 - 718 710 679 733 997 1,136 1,121 1,048 750 808