TABLE OF CONTENTS 



PAGE 



INTRODUCTION 3-1 



Study Area 3-1 



General Hydrogra:phy of New Haven Harbor 3-2 



Hydrology of the New Haven Harbor Drainage Basin 3-3 



General Patterns of Circulation in long Island Sound 3-5 



Climatology 3-S 



Previous Studies - New Haven Harbor 3-6 



Previous Studies - Long Island Sound 3-8 



Environmental Studies at Other Power Plant Sites 3-9 



METHODS 3-10 



Monthly Surveys 3-10 



Continuous Monitoring Station 3-12 



DESCRIPTION OF NEW HAVEN HARBOR HYDROGRAPHY 3-12 



Estuarine Classification and Harbor-Wide Circulation Patterns . 3-13 



Salinity Distribution 3-17 



Temperature Distribution for the Sample Year 3-28 



Temperature-Salinity : Patterns of Density Changes During 



the Sample Year 3-32 



Dissolved Oxygen Distribution 3-34 



pH Distribution 3-35 



Transparency 3-41 



Spatial Variability Patterns 3-41 



Comparisons Among Study Years 3-52 



Summary: Characterization of New Haven Harbor Hydrography . . . 3-55 



ANALYSIS OF IMPACT 3-57 



Modification of Local Current Patterns 3-58 



Modification of the Thermal Regime in the Harbor 3-75 



Changes in Dissolved Oxygen Concentration 3-91 



