3 MCCP Monitoring Plan and 

 Implementation 



Monitoring Plan Overview 



In the 1984 nomination of the MOCR for inclusion in the MCCP, a strong 

 interest was expressed in evaluating the design and performance of the planned 

 weir jetty system and establishing a database for fumre planning of similar jetty 

 systems. Six hypotheses were developed to address the objectives. The 

 hypotheses are as follows: 



1. The weir-jetty system has minimal impact on adjacent beaches. 



2. The weir should be on the northeast side of the inlet. 



3. The weir is in proper cross-shore location, is at the correct elevation, 

 and is the appropriate length. 



4. The impoundment area is large enough and the anticipated dredging 

 frequency is correct. 



5. The impoundment basin trapping efficiency is high. 



6. The northeast jetty length should extend 460 m past the end of the weir 

 section (to the -3. 7-m contour). 



The Colorado River data collection effort, which was designed to address 

 these hypotheses, was divided into three main components. First, offshore 

 directional wave sensors were deployed at the site for the life of the data 

 collection phase to obtain long-term, continuous wave, current, and water level 

 information. The second component consisted of a series of intense, short-term 

 field experiments that principally collected sediment transport data in the surf 

 zone. Figure 3 shows the general location where instruments for both the 

 long- and short-term measurements were deployed. Bathymetry surveys (beach 



1 Chapter 3 MCCP Monitoring Plan and Implementation 



