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 - - -
