A Tidal Study of Great Bay, New Hampshire

Sean Orlando Denney
Master's Student


Friday, Mar. 30, 2012, 3:00pm
Chase 130

Nearly one hundred years of tidal research has failed to provide accurate and consistent tide predictions within the Great Bay, NH. The purpose of this study is to implement a tidal prediction model of the bay.

With the use of numerous experiment tide gauges, calibration against a control gauge is necessary to determine any systematic bias. After comparative analysis, each tide gauge was found to be statistically equivalent to the control gauge.

In the Great Bay, water level observations are taken at strategically positioned tide stations. The harmonic constituents and tidal datums at each tide station are then derived. Using the NOAA TCARI prediction method, a tide prediction model of the Great Bay is implemented.

Verification of the model was made using water level measurements from both temporally and spatially strategic tide stations. The model was found to be statistically significant for tidal predictions within the Great Bay.


Sean Denney received a Bachelors of Science in Geomatics from the University of Florida in 2009. He is pursuing a Master's Degree in Ocean Engineering/Ocean Mapping at CCOM/JHC at the University of New Hampshire.

Sean is an active cave and wreck diver, having served as General Manager for the National Association for Cave Diving.