INPUT DATA 



Kraus (1989) provides a summary of data requirements for shoreline 

 change modeling. Here, major data inputs for the present project will be 

 described. 



Shoreline Position Data 



Maps containing historical shoreline position data (from surveys) were 

 obtained from the U.S Army Corps of Engineers, Los Angeles District. These 

 data, summarized in Table 1, were digitized at approximate 100-ft intervals 

 with respect to a baseline oriented along the general trend of the shoreline 

 (on a northwest/southeast line), and cubic spline interpolation was used to 

 produce shoreline positions with an exact alongshore spacing of 100 ft to 

 allow direct comparison and further manipulation. An analysis of the shore- 

 line position data was performed to summarize spatial and temporal variabili- 

 ties. Mean, standard deviation, and average absolute shoreline change were 

 calculated for four regions within the study area. The shoreline segments 

 are: Segment 1, Santa Ana River to Anaheim Bay (modeled reach); Segment 2, 

 Santa Ana River to Huntington Pier; Segment 3, Huntington Pier to Anaheim Bay; 

 Segment 4, near proposed ocean entrance site (a 2 . 7-mile-long reach centered 

 about the proposed entrance system) . 



Table 1 

 Summary of Shoreline Position Data Sets 



Date of Survey 



1878 3 



1934 3 



1937 3 



1949 3 



1958 3 



Jun-Aug 1963 



1967 3 



Apr 1969 



Apr 1970 



Dec 1982 - Jan 1983 



Scale 

 1:9600 

 1:9600 

 1:9600 

 1:9600 

 1:9600 

 1:3600 

 1:9600 

 1:9600 

 1:4800 

 1:4800 



Datum 1 

 MLLW 

 MLLW 

 MLLW 

 MLLW 

 MLLW 

 MLLW 

 MLLW 

 MLLW 

 MLLW 

 MLLW 



File Nc 



,. 2 



C-949 - 



C 951 



C-949 - 



C-951 



C-949 - 



C-951 



C-949 - 



C-951 



C-949 - 



C-951 



902-B - 



907-B 



C-949 - 



C-951 



C-921 - 



C-923 



-926-70-4 



- C-931-70-4 



E-906 - 



E-910 



1) MLLW = Mean Lower Low Water. 



2) U.S. Army Corps of Engineers, Los Angles District file numbers, 



3) Month of survey not available. 



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