SWG data 



The Galveston District did extensive surveys of the impoundment basin in 

 the time period 1990 to 1992. Available impoundment basin surveys are given 

 in Table 7 and their locations are shown in Figure 2. In addition, SWG 

 supplied volumes of material dredged from the mouth of the river and the 

 impoundment basin during the monitoring effort. These volumes are shown in 

 Table 8. They also supplied sediment samples taken on August 18, 1994. 



Table 7 



Available Impoundment Basin Bathymetric Surveys (1990-1992) 



Survey 



Line 



Number 



Survey Dates (month/year) 



3/90 



5/90 



8/90 



4/91 



4/92 



9/92 



33 + 600 



XXX 





XXX 



XXX 





XXX 



33 + 700 



XXX 





XXX 





XXX 





33 + 800 



XXX 





XXX 



XXX 



XXX 



XXX 



33 + 900 



XXX 



XXX 



XXX 





XXX 





34 + 000 





XXX 



XXX 





XXX 



XXX 



34+100 





XXX 



XXX 





XXX 





34 + 200 





XXX 



XXX 



XXX 





XXX 



Table 8 



Dredging Volumes at the Mouth of the Colorado River 



Date 



Impoundment 



Basin 

 cubic meters 



Entrance 



Channel 



cubic meters 



Total 

 cubic meters 



9/89-3/90 



480,827 



837,211 



1,318,038 



4/91-5/91 







47,464 



47,464 



9/92-2/93 



518,547 



536,886 



1,055,433 



12/93-2/94 



618,745 



51,303 



670,048 



12/94-2/95 



176,049 



203,542 



379,591 



Chapter 3 MCCP Monitoring Plan and Implementation 



27 



