5-19 Salinity (ppt) , flushing time (number of tides), 



mean tidal velocity (km/hr) , and non-tidal velocity 



(km/hr) as predicted by the Ketchum estuarine flushing 



model for the Penobscot estuary. Data are plotted 



from the head of the estuary (0 km) downstream to the 



point of predicted oceanic salinity 5-31 



5-20 Salinity (ppt), flushing time (number of tides), 



mean tidal velocity (km/hr) , and non-tidal velocity 



(km/hr) as predicted by the Ketchum estuarine flushing 



model for the Union estuary. Data are plotted from 



the head of the estuary (0 km) downstream to the point 



of predicted oceanic salinity 5-34 



5-21 Salinity (ppt), flushing time (number of tides), 



mean tidal velocity (km/hr) , and non-tidal velocity 



(km/hr) as predicted by the Ketchum estuarine flushing 



model for the Narraguagus estuary. Data are plotted 



from the head of the estuary (0 km) downstream 



to the point of predicted oceanic salinity 5-34 



5-22 Salinity (ppt) , flushing time (number of tides) , 



mean tidal velocity (km/hr) , and non-tidal velocity 



(km/hr) as predicted by the Ketchum estuarine flushing 



model for the Machias estuary. Data are plotted 



from the head of the estuary (0 km) downstream 



to the point of predicted oceanic salinity 5-35 



5-23 Salinity (ppt) , flushing time (number of tides) , 



mean tidal velocity (km/hr) , and non-tidal velocity 



(km/hr) as predicted by the Ketchum estuarine flushing 



model for the Dennys estuary. Data are plotted 



from the head of the estuary (0 km) downstream 



to the point of predicted oceanic salinity 5-35 



5-24 Salinity (ppt), flushing time (number of tides), 



mean tidal velocity (km/hr) , and non-tidal velocity 



(km/hr) as predicted by the Ketchum estuarine flushing 



model for the St. Croix estuary. Data are 



plotted from the head of the estuary (0 km) 



downstream to the point of predicted oceanic salinity .... 5-37 



5-25 Feeding habits of estuarine fishes 5-45 



5-26 Simple representation of the energetic 



relationships between trophic levels 5-48 



5-27 Generalized food web for the estuarine 



system of coastal Maine 5-49 



XXlll 



10-80 



