that usable, valid conclusions be reached. It can be said that the 

 work is now thoroughly organized; personnel are familiar with the 

 area and its problems, waves and winds are being recorded, and Inex- 

 pensive program of measuring sand flow rates is underway, and enough 

 data have been obtained to determine the best course for future in- 

 vestigations . These results are somewhat intangible but probably 

 are most valuable if the work is continued. Suggestions are made 

 below for a continuing program. The emphasis needs to be on the 

 solution of general coastal problems and the relation of the physical 

 aspects of the ocean to the works of man on its shores. Data from 

 the field has been analyzed and reduced to usable form and made 

 graphical. The analytical part of the work should be done concurrent- 

 ly with the collection of additional data. When the statistics are 

 considered in the light of personal impression, which is sometimes 

 impossible to record, they will have much greater meaning. 



Ra commendati on s - Various references have been made to the value 

 of having a continuing program of data collection and study. These 

 are now briefly reviewed. It is emphasized that the value of much of 

 this information lies in its continuity and even short gaps may liiake 

 the record of limited value . 



a. The wave recorders in Santa Barbara channel and on the open 

 coast should be maintained. 



b. Surveys of the perimeter of the fill should be made twice 

 monthly with full surveys at four to six month intervals so there are 

 flow rates of sand for short periods of time for correlation with wave 

 action. 



Both of these programs should be carried forward concurrently until 

 at least a full year of record is obtained. This is particularly im- 

 portant if the dredging is to be delayed a year at a time that appears 

 to be a maximum in sand flow. This should be started as soon as 

 possible so that there will be no break in the record between the end 

 of the present investigation (January 1, 1951) and the start of any 

 additional one. 



c. The movements of the sand before it reaches the harbor should 

 be studied with a view to determining its primary source and the 

 route and means by which it is moved into the critical area. It is 

 particularly desirable to know whether an appreciable amount of the 

 sand comes from beyond Point Conception. A study of mineral content 

 of the sand and a petrological study of the rocks being moved would be 

 of value in tracing the source. Soundness and sphericity ratios be- 

 tween the quartz and Feldspar might help determine the distance the de- 

 tritus travels. 



do Considerable time needs to be spent in investigating the basic 

 causes of sand movement. Present and past data need to be considered 

 in the light of detailed observation of a large area of beach. 



K 



