Table 2.
Summary statistics of the chemical water parameters from the survey zones shown in Fig. 1
| Depth* | Temperature* | DO* | SEC* | TDS* | pH* | HCO3− | Cl− | SO42− | NO3− | F− | DOC | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| m | °C | mg L−1 | µS cm−1 | mg L−1 | mg L−1 | mg L−1 | mg L−1 | mg L−1 | mg L−1 | mg L−1 | ||
| North | ||||||||||||
| Mean | 2.1 | 27 | 5.6 | 158 | 81 | 7.9 | 71 | 5.1 | 1.8 | 0.19 | 0.52 | 4.0 |
| SD | 1.4 | 1.2 | 1.1 | 31 | 16 | 0.55 | 8.1 | 1.4 | 0.36 | 0.35 | 0.05 | 1.5 |
| Max | 5.0 | 30 | 9.3 | 265 | 133 | 9.2 | 79 | 8.7 | 3.5 | 2.4 | 0.59 | 16.7 |
| Min | < 0.001 | 23 | 2.3 | 101 | 51 | 6.7 | 29 | 1.8 | 0.58 | 0.03 | 0.24 | 1.9 |
| South | ||||||||||||
| Mean | 1.7 | 27 | 5.6 | 157 | 84 | 7.8 | 74 | 4.7 | 1.7 | 0.69 | 0.51 | 4.4 |
| SD | 1.9 | 1.9 | 1.1 | 49 | 37 | 0.44 | 27 | 1.8 | 0.80 | 1.4 | 0.11 | 3.0 |
| Max | 9.0 | 33 | 8.4 | 337 | 256 | 8.9 | 188 | 11 | 7.0 | 8.1 | 1.0 | 26.4 |
| Min | < 0.001 | 21 | 3.6 | 73 | 48 | 6.6 | 16 | 1.5 | 0.58 | 0.03 | 0.20 | 1.7 |
| Straits | ||||||||||||
| Mean | 2.9 | 26 | 5.7 | 119 | 62 | 7.9 | 57 | 3.9 | 0.90 | 0.16 | 0.37 | 2.9 |
| SD | 2.9 | 1.5 | 1.1 | 9.0 | 8.6 | 0.5 | 8.2 | 0.53 | 0.23 | 0.24 | 0.05 | 0.57 |
| Max | 18 | 28 | 9.3 | 137 | 84 | 9.2 | 7 | 4.8 | 1.3 | 0.94 | 0.48 | 5.7 |
| Min | < 0.001 | 22 | 4.4 | 101 | 51 | 7.0 | 32 | 1.9 | 0.38 | 0.03 | 0.25 | 2.1 |
| Lake | ||||||||||||
| Mean | 7.5 | 25 | 6.1 | 98 | 57 | 7.9 | 40 | 2.9 | 0.42 | 0.08 | 0.26 | 3.2 |
| SD | 8.3 | 2.1 | 2.6 | 5.7 | 7.9 | 0.66 | 14 | 1.1 | 0.20 | 0.15 | 0.05 | 2.7 |
| Max | 26 | 28 | 11 | 107 | 68 | 9.1 | 56 | 4.5 | 0.89 | 0.64 | 0.32 | 14.1 |
| Min | 1.0 | 22 | 0.18 | 87 | 44 | 7.1 | 12 | 0.57 | 0.07 | 0.03 | 0.15 | 1.1 |
Parameters measured in the field are denoted by *. All other parameters were measured in the laboratory at BGS
DO, dissolved oxygen; SEC, conductivity; TDS, total dissolved solids; HCO3− total alkalinity; DOC, dissolved organic carbon; SD ± 1 standard deviation