Online Tide

bulletDaily Tide & Current Predictions 2 day window for US, Alaska, Hawaii, Canada, Central America, & northern South America. 
bulletDr Dan's Fish & Game Predictions Uses sun, moon, and tide predictions to determine the best times to go hunting and fishing. Includes Loran-GPS conversions.
bullet Make a Tide Prediction This system will allow you to calculate tidal predictions for more than 3000 tide stations predicted by CO-OPS.
bullet Tidal Information Tides are calculated from the present for up to 30 days in the future.
bullet Tide Predictor Submit and create your own plot for tide predictions. 
bulletTides Online Design your own tide tables, membership is free. 
bullet UT1 Tidal Time Series Generator/Predictor  "This facility, created by the IERS GGFC Special Bureau for Tides, allows users to predict tidal variations in UT1 based on the harmonic constants of 8 short-period (diurnal and semidiurnal) tidal constituents."
bulletwww.saltwatertides.com You will find predictions at over 2500 locations for: tide heights, times, sunrise, sunset and moonrise. 
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Tide Observations

bullet PORTS (Physical Oceanographic Real-Time System) real-time data for a number of different aspects. 
bulletTidal Observations provides six-minute height, hourly height, monthly mean heights, & station data [NOAA NOS CO-OPS]
bulletTides Online retrieve observed water levels for storm surge.