MONTHLY SEDIMENT TRANSPORT RATE 



Colorado River, TX 



JAN. 



FEB. MAR. APR. MAY. JUN. JUL. AUG. SEP. OCT. NOV. DEC. 

 MONTHS 



Figure 26. Monthly sediment transport rate, in cubic meters per month. 

 Squares are the gross transport to the southwest, circles are the gross 

 transport to the northeast, diamonds are total gross transport, and bars are 

 the net transport. Calculated by SPM method 



Table 12 



Average Sediment Transport Rates Calculated by SPM Method 



Direction 



Cubic meters 

 per year 



Gross rate to the southwest 



590,000 



Gross rate to the northeast 



80,000 



Net rate to the southwest 



510,000 



Total gross transport 



670,000 



Surf Zone Measurements 



As described in Chapter 4, the data from the stacked OBS and ECM's were 

 vertically integrated to give sediment transport rates at sled locations in the surf 

 zone. These local transport rates, listed in Appendix C, were then integrated 

 across the surf zone to obtain total longshore sediment transport rates using 

 visual estimates of the surf zone width taken from the field notes. 



The procedure, as discussed in more detail in White (1994), was to compare 

 these measured transport rates with the transport values predicted from the 



46 



Chapter 5 Prediction of Sediment Transport Rates 



