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REPORT OF AUGUST. 



September 4, 1913. 



Board of Commissioners of Agricultui:e and Forestry. 



Gentlemen: — The following brief report of operations of the 

 Division of Hydrography during August, 1913, is submitted: 



G. K. Larrison, Superintendent. 



August 1 to 8 were spent on making a reconnaissance of North 

 and South Kona, Hawaii, in connection with the water investiga- 

 tion of these districts as authorized by Act 102 of the 1913 Legis- 

 lature. This reconnaissance was started on July 19. On August 

 15 a reconnaissance was made of the lower Laie valley and on 

 August 23 a reconnaissance was made of the upper Moanalua 

 valley to determine the feasibility of establishing stream gaging 

 stations. A further investigation will be made of the Laie valley. 

 On August 21 an inspection was made of the two cooperative 

 stations installed by the Wahiawa Water Company on the north 

 fork of the Kaukonahua stream on Oahu, in company with W. W. 

 Goodale. T. H. Petrie and J. C. Dort. August 27 to 29 were spent 

 on Kauai on general inspection and consultation work which in- 

 cluded a reconnaissance of the Waimea gorge and its principal 

 branches. The stream beds were followed up to an elevation of 

 about 900 feet above sea level, and future stream gaging station 

 sites were located. The balance of the month was spent on gen- 

 eral administration work, including the overseeing of the con- 

 struction of the new clock register stream gaging station on the 

 Kalihi stream. 



/. C. Dort, Office Engineer, Oahu : 



On August 1 the Pali and north fork Kaukonahua rain gages 

 were read. On August 8 an investigation was made of the quan- 

 tity of water developed in the Waiahole Water Company tunnel. 

 The measurement showed that 17 million gallons per day were 

 being picked up in the tunnel proper. On August 21 an inspec- 

 tion trip was made, in company with the superintendent, W. W. 

 Goodale and T. H. Petrie, of the two new cooperative stations on 

 the north fork of the Kaukonahua. August 26 to 31 were spent 

 on the construction of the new clock register stream gaging sta- 

 tion on the Kalihi stream. August 11 and 12 were taken on sick 

 leave. 



The balance of the month was spent on general office work, in- 

 cluding computations, drafting, reports, etc. 



C. T. Bailey. Assistant Engineer, Maui: E. O. Christiansen. 

 Assistant Engineer: 



Mr. Bailey, assisted by ^Ir. Christiansen, visited 46 stream gag- 

 ine stations, made 21 stream measurements, and set four bench 



