251 



MAUI. 



Wet weather conditions continued during June, but there was 

 less rainfall than during the previous month. 



Twenty stream measurements were made during the month 

 at medium or flood stages. Four new Stevens clock registers 

 were placed at stations previously prepared to receive them. 



The month was utilized almost entirely in obtaining stream 

 measurements which improved rating curves. 



HAWAII. 



From June 17 to 22 an examination was made of the south 

 branch of the Wailuku river near Hilo at the request of the 

 Attorney General, in connection with the Hilo Boarding School 

 ditch controversy. The results of this investigation have been 

 reported to the Attorney General of Hawaii for his use when the 

 case comes to trial at Hilo. Floods prevented the completion of 

 this investigation, and a further examination will be made as soon 

 as the ^^'ailuku drops to a normal stage, probably during July. 



EXPERIMEXTAL IXVESTIGATIOXS. 



Tentative arrangements have been made with the director of 

 the H. S. P. A. Experimiental Station to undertake an investiga- 

 tion of ditch losses, evaporation, water duty under diflFerent con- 

 ditions of soils, etc. The work will be started at the experimental 

 substation at ^^^aipio near Waipahu, Oahu. The H. S. P. A. 

 will furnish all labor, materials, etc., while this division will fur- 

 nish the technical help to carry out the hydrometric work. After 

 the work has been started at W^aipio it is hoped that it can be 

 extended to plantations on all islands under differing conditions 

 of soil, climate, crops, etc. 



The first work to be taken up will be the investigation of ditch 

 seepage soil and distribution losses, and some evaporation experi- 

 mental work which will be started during July. 



It is believed that the data obtained will open the way to 

 greater efficiency and economy in water utilization in Hawaii. 



STREAM-GAGING STATIOXS MAIXTAIXED. 



Established Discontinued 



Island. May 31. 



Kauai 27 



Oahu -^4 



Maui 43 



Kona, Hawaii 1 



Total 115 7 2 120 



Kegisters uot .vet put in. 



