IV-75 



TABLE IV. 1.9 CHARACTERISTIC NATURAL ESTUARINE ZONE CIRCULATION 

 AND WATER QUALITY CONDITIONS (continued) 



(4) Unrestricted River 

 Entrance 



(5) Embayment, Coastal 

 Drainage Only 



(6) Embayxent, Continuous 

 Upland River Flow 



(7) Fjord 



Highly stratified, some 

 turbidity, high oxygen, 

 temperatures warmer 1n 

 summer, colder In winter 

 than ocean 



Little turbidity, water 

 of oceanic character; 

 strong tidal currents 

 through Inlets 



Little turbidity, high oxygen, 

 may be stratified, upper layer 

 fresh, with temperatures 

 warmer In summer, colder 1n 

 winter than the ocean 



Moderate stratification, 

 suspended mud and silt, 

 high oxygen, strong 

 currents 



Generally shallow, small 

 tides, clear water with 

 lowered salinity, high 

 oxygen 



Variable stratification, 

 suspended mud and silt, high 

 oxygen, small amounts of 

 organic material 



Moderate stratification 

 suspended mud and silt, 

 high oxygen, strong 

 currants 



Generally shallow, small 

 tides, clear water with 

 lowered salinity, high 

 oxygen 



Variable stratification, 

 suspended mud and silt, high 

 oxygen, small aaounts of 

 organic material 



Strong stratification, 



high tusptndtd mud and 

 clay, strong eurrtnti, 



dissolved organic* , 

 moderate oxygen 



Slightly turbid, strong 

 currents, rtvtr cooler 

 than ocean water 



Some color, small cur- 

 rents, generally shallow, 

 high dissolved organlcs, 

 highly fluctuating 

 oxygen 



Very small currents, 

 generally shallow, 

 quite warm, dear 

 ocean water 



Slight and variable stratifi- 

 cation, river water cooler 

 than ocean, slight color, 

 some oxygen fluctuation 



Slightly turbid, eddying 

 currents, slight stratification, 

 high oxygen 



Slightly turbid, strong 

 currents, river cooler 

 than ocean water 



Strong stratification, 

 offshore bar formation, 

 cool, high oxygen 



Very smell currents 

 except (n Inlet, shal- 

 low, warm, slight 

 turbidity from sand 

 and silt, highly 

 fluctuating oxygen 



Some suspended silt, 

 erratic eurrtnti, 

 cool , high oxygen 



Slight and variable strati- 

 fication, river water 

 cooler than ocean some 

 oxygen fluctuation 



Moderate to strong 

 stratification, high 

 suspended silt, strong 

 currents, high oxygen, 

 cool 



Strong stratification, 

 offshore bar formation, 

 cold, high oxygen 



Some suspended silt, 

 erratic currents, 

 cold, high oxygen 



Moderate to strong 

 stratification, high 

 suspended silt, strong 

 currents, high oxygen, 

 cold 



Strong currents, high 

 suspended solids 

 frequently glacial In 

 origin, very cold 



Very cold oceanic 

 water, much Ice, surface 

 layer of fresh water, 

 high oxygen 



High turbidity with glacial 

 debris, seasonal freeze- 

 ups , strong currents 

 during runoffs 



Stagnant below 

 sill depth, very 

 little oxygen, 

 high salinity 

 hydrogen sulfide 



Slightly turbid, strong 

 currents, river cooler 

 than ocean water ■ 



Very small currents, 

 generally shallow, 

 quite warm, clear 

 ocean water 



Slightly turbid, eddying 

 currents, slight stratification, 

 high oxygen 



