The CSI does not depict hourly to daily fluctuations. The graphs and maps on this page show the latest weekly trends for the CSI sites.

The seven-day average shows the average salinity and water temperature conditions for the most recent seven days. By averaging over an entire week, water conditions are more indicative of recent hydrological conditions than current conditions.

All real-time data are provisional and subject to revision.

Salinity, water temperature and gage height values are current as of

Salinity (Seven-day Average)
  • ≤ 0.5 PPT
  • 0.6 - 2.9 PPT
  • 3.0 - 6.9 PPT
  • 7.0 - 11.9 PPT
  • 12.0 - 17.9 PPT
  • 18.0 - 29.9 PPT
  • ≥ 30.0 PPT
  • Not Available
  • Parts Per Thousand (PPT)
Seven-day Salinity Change
  • ≤ -2 PPT
  • -1.9 to -1.0 PPT
  • -0.9 to 0 PPT
  • 0.1 to 1.0 PPT
  • 1.1 to 2.0 PPT
  • 2.1 to 3.0 PPT
  • ≥ 3.1 PPT
  • Not Available
  • Parts Per Thousand (PPT)
Water Temperature (Seven-day Average)
  • ≤ 9.9 °C
  • 10.0 - 13.9 °C
  • 14.0 - 17.9 °C
  • 18.0 - 21.9 °C
  • 22.0 - 25.9 °C
  • 26.0 - 29.9 °C
  • ≥ 30.0 °C
  • Not Available
  • Degrees Celsius (°C)
Seven-day Temperature Change
  • ≤ -2 °C
  • -1.9 to -1.0 °C
  • -0.9 to 0 °C
  • 0.1 to 1.0 °C
  • 1.1 to 2.0 °C
  • 2.1 to 3.0 °C
  • ≥ 3.1 °C
  • Not Available
  • Degrees Celsius (°C)
Gage Height (Seven-day Average)
  • ≤ 0.00 ft. NAVD88
  • 0.01 - 3.00 ft. NAVD88
  • 3.01 - 6.00 ft. NAVD88
  • 6.01 - 9.00 ft. NAVD88
  • 9.01 - 12.00 ft. NAVD88
  • 12.01 - 15.00 ft. NAVD88
  • ≥ 15.01 ft. NAVD88
  • Not Available
  • NAVD88 (North American Vertical Datum of 1988)
Seven-day Gage Height Change
  • ≤ -2.00 ft. NAVD88
  • -1.99 to -1.00 ft. NAVD88
  • -0.99 to 0.00 ft. NAVD88
  • 0.01 to 1.00 ft. NAVD88
  • 1.01 to 2.00 ft. NAVD88
  • 2.01 to 3.00 ft. NAVD88
  • ≥ 3.01 ft. NAVD88
  • Not Available
  • NAVD88 (North American Vertical Datum of 1988)