Table 1.
| Urban estuary | Lake Michigan | ||||||
|---|---|---|---|---|---|---|---|
| Junction | MKE | MN | KK | 2 mile | Linwood | Doctors park out | |
| Temperature (°C) | 19.4 (11.8–24.6) | 21.6 (7.5–26.8) | 22.1 (12.7–29.1) | 19.3 (12.3–25.0) | 17.0 (10.4–21.7) | 17.5 (8.6–21.5) | 16.4 (6.9–22.9) |
| pH | 8.0 (7.5–8.5) | 8.2 (7.7–8.6) | 7.8 (7.4–8.3) | 8.0 (7.6–8.4) | 8.4 (8.0–8.7) | 8.4 (8.2–8.6) | 8.4 (8.2–8.6) |
| Conductivity (μS/cm) | 587 (257–799) | 807 (210–896) | 700 (336–997) | 615 (315–899) | 294 (279–341) | 285 (274–305) | 285 (275–292) |
| Susp. solids (mg l−1) | 6 (4–80) | 12 (4–100) | 8 (3–170) | 10 (6–140) | bd (bd–bd) | bd (bd–bd) | bd (bd–bd) |
| Total P (μgl−1) | 68 (bd–230) | 115 (44–290) | 100 (bd–280) | 82 (42–260) | bd (bd–72) | bd (bd–bd) | bd (bd–25) |
| TKN (mg l−1) | 0.60 (bd–1.10) | 0.72 (bd–1.60) | 0.68 (bd–1.60) | 0.62 (bd–1.40) | bd (bd–0.62) | bd (bd–0.83) | bd (bd–0.84) |
| NO3/NO2 (mg l−1) | 0.71 (0.38–1.10) | 0.90 (0.24–1.40) | 0.58 (0.27–1.10) | 0.71 (0.35–1.20) | 0.27 (bd–0.44) | 0.26 (bd–0.30) | 0.29 (bd–0.31) |
| Chlorophyll a (μgl−1) | 6.0 (0.9–17.8) | 6.4 (3.3–34.8) | 6.7 (2.1–52.9) | 6.0 (1.8–27) | 1.2 (0.3–7.2) | 0.8 (bd–7.5) | 0.4 (0.2–1.8) |
a
The Median (Range) are listed for each water chemical/physical property measurement.
b
Abbreviations: Susp. Solids, Suspended Solids; Total P, Total Phosphorus; TKN, Total Kjeldahl Nitrogen; bd, below detection.
c
The detection limits are as follows: Suspended Solids 1 mg l−1, Total Phosphorus 20 μg l−1, Total Kjeldahl Nitrogen 0.36 mg l−1, Nitrate/Nitrite 0.20 mg l−1, Chlorophyll a 0.11 μg l−1.