F.6. Volume Computations 



As noted in the earlier sections of this appendix, there is a wealth of survey data for the 

 beaches of Brevard County. Many of the surveys were taken for limited areas, such as the 

 condition surveys taken by FDEP, or have been taken once, such as the US ACE survey in 1965- 

 1966 for Brevard County from Cape Canaveral to the north county line. The US ACE completed 

 a survey for the area 2 miles north and south of the Harbor just prior to the pilot cut through the 

 barrier island in October 1951. In May 1954, the USACE expanded the October 1951 survey to 

 extend 4 miles north and 6.5 miles south of the Harbor. The 1951 and 1954 surveys serve as the 

 basis for examining volume changes to the shores adjacent to Canaveral Harbor since its 

 construction. 



Table F-4 shows the extent of survey data north of Canaveral Harbor. Beach-profile data 

 north of the Harbor for October 1951, May 1954, November 1958, March 1965 - January 1966, 

 February - April 1994, January 1996, May 1996, and May 1997 were digitized for analysis. 

 These surveys are shaded in Table F-4. Tables F-5 and F-6 show the extent of survey data from 

 the south jetty to R-53, near the north boundary of Patrick AFB. Beach-profile data south of the 

 Harbor for October 1951, May 1954, November 1958, March 1965 to January 1966, September 

 to November 1972, May 1975, March 1979, December 1979, August 1985 to May 1986, 

 January 1994, January 1996, May 1996, and May 1997 were digitized for analysis. These 

 surveys are shaded in Tables F-5 and F-6. The location and extent of survey data from R-53 to 

 the south county line have been compiled, but were excluded from this report since the focus is 

 on the test Plaintiffs (test Plaintiffs are located north of R-53). Therefore, surveys south of R-53 

 were not listed in Tables F-5 and F-6. 



Beach-profile data were digitized from the USACE D.O. map file mylar media, or obtained 

 electronically from FDEP, in order to compare volume changes using the computer-aided design 

 and drafting (CADD) software program. The software program MicroStation in conjunction 

 with the support package InRoads was used to define the survey baseline data, beach-profile 

 survey data, and conversion of data into surfaces (Digital Terrain Models (DTMs)) for each 

 survey. Volume difference between the surfaces was then generated for each survey. The 

 onshore limit of the volumetric analysis was the FDEP monuments. The offshore limit of the 

 volumetric analysis is the 17-ft depth contour relative to NGVD (+1.7 ft MLW). An average-end 

 area analysis was used to determine volume changes between each beach-profile survey line. 

 The CADD software determined the cut, fill, and net area changes at each of the profile lines. 

 The average net area change between adjacent long-line beach profiles was multiplied by the 

 distance between each survey monument to define volume change. 



The surveys listed above from 1951 through 1997 were digitized with CADD software. 

 InRoads converted the digital survey data into DTMs. Much of the USACE survey data were 



Appendix F Brevard County Federal Projects and Surveys F-33 



