GRAND CALUMET RIVER AT COLUMBIA AV AT HAMMOND, IN
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Water Quality
Updated Sep 17, 2026Measures water acidity or alkalinity on a scale of 0-14. Neutral is 7. Most fish thrive in 6.5-8.5 range.
Water temperature directly affects fish metabolism and activity. Optimal range varies by species.
Amount of oxygen dissolved in water. Essential for fish survival. 6+ mg/L is ideal for most fish species.
Measures dissolved ions and minerals in water. Indicates salinity and pollution levels. Freshwater: 100-500 µS/cm.
Conductivity (µS/cm) - a monitoring measurement reported by this station. Contact local authorities for specific safety guidelines.