h5 



10.0 

 10.4 



8.8 8[8 as 9 2 95 



ILO 

 10-2 

 10.5 



10.5 

 11.0 

 101 



110 



J- 



SECTION A- A 



VELOCITY OBSERVATIONS AT 

 10 -FT INTERVALS, SURFACE TO BOTTOM 



' APPROXIMATE BOTTOM OF BAY EL -165 FT 



BOTTOM VELOCITIES, CENTER LINE 



TEST CONDITIONS 



UPPER POOL ELEVATION + L3 FT 



LOWER POOL ELEVATION 0.0 FT 



note: VELOCTIES ARE EXPRESSED IN PROTOTYPE 



FT PER SEC ELEVATIONS ARE IN PROTOTYPE 

 FEET ELEVATION 0,0 IS MLW NEWPORT WHICH 

 IS I 6 FT BELOW MSL. 



SCALES 



HORIZONTAL 

 VERTICAL 



Fig. 20. Velocities in East Passage navigation opening of plan 35 

 for maximum head differential, astronomical mean tide with 3-6 ft 



range at Newport 



67. Maximum hurricane tide head differentials across the Lower 

 Bay structures of plan 35 occurred for conditions of the 20 -knot design 

 hurricane tide and amounted to 9-6 ft in the East Passage and 10.2 ft 

 in the West Passage. These head differentials were established in the 

 flume containing the undistorted scale models of both navigation open- 

 ings, and detailed velocity measurements were made as described previ- 

 ously for maximum astronomical tide head differentials. Velocity data 

 for the East Passage navigation opening are presented on fig. 21, and 

 those for the West Passage opening are presented on fig. 22. Veloc- 

 ities in the East Passage opening ranged from a minimum of about 0.0 ft 

 per sec near the abutments to a maximtun of about 30.9 f"t pei" sec, while 

 those in the West Passage opening ranged from a minimum of about 24.0 ft 

 per sec to a maximum of about 26.5 ft per sec. It was not possible to ob- 

 tain accurate velocity measurements near the abutments of the openings 



