Table 6. Galveston Bay entrance hydraulic characteristics. 



Date 



1877 

 1891 



1895 



1900-15 



1936 



1962 



Tide condition 



Mean range 



Diurnal 

 Mixed 



Mean range 



Hurricanes 



Diurnal 



Norther 

 Diurnal 



Tidal prism 

 (ft3 X 10^) 



7.6 



10.7 

 3.7 



6.0 



19b. 

 13.0 



Al.O 

 10.6 



Minimum crosu- 



sectlonal area 



(ft2 X 10^) 



1.4 

 1.6 



1.6 



1.7 



1.9 



V 1 

 (ft/s) 



1.22 



1.50 

 1.1 



0.84 



2.53 



1.7" 

 5 



2.34 



max 

 (ft/s) 



1.92 



2.36 

 1.75 



1.33 



4.0^ 



2.7"* 

 5 



3.64 



Computed from V 



A (T/2) 

 c 



and A cross-sectional area. 



^Computed from V ~ -^ V 

 '^ max 2 



^Measured. 



** Predicted. 



Period unknown. 



where T is tidal period, P tidal prism. 



4il0 6 8 Ixio" 2 4 6 



Minimum cross-sectional oreo (ft ) 



Figure 59. Average maximum velocity versus minimum 

 sectional area, Galveston Bay entrance, 



cross- 

 Texas. 



65 



