128 • 



13; persons calling for advice by telephone, 11; persons calling 

 at nursery for advice, 15; advice by letter to other islands, 6; 

 total, 45. 



Respectfully submitted, 



David Haughs, 

 Forest Nurseryman. 



DIVISION OF HYDROGRAPHY. 



Honolulu. Anril 13, 1915. 



Board of Commissioners of Agriculture and Forestry. 



Gentlemen : — The following report of operations of the Divi- 

 sion of Hydrography during March, 1915. is submitted: 



WEATHER CONDITIONS. 



Reports from all islands indicate serious conditions of drouglU. 

 The discharge of East Alaui ditches is the lowest on record — a 

 total discharge of about 45 million gallons per day. The mean 

 discharge of these ditches has been about 125 million gallons per 

 day, and the maximum capacity is about 225 million gallons per 

 day. The low discharge of East Maui ditches is typical of 

 practically all other ditches' on all islands. 



UTILIZATION INVESTIC.ATIONS, 



Little work was done in this line. A few check measurements 

 were made on Kahuku i^lantation and for the Heeia Agricultural 

 Company. An attempt was made to make seepage investigations 

 on the ditches of the Maui Agricultural Company and the Ha- 

 waiian Commercial & Sugar Company on Maui, but through a 

 misunderstanding the control of the water in the ditches was not 

 satisfactory and the work was posti:)oncd. 



KAUAI. 



Mr. W. \'. I lardy, formerly in cliargc of Kauai, returned from 

 the mainland on March 13 and resumed charge of the island. 

 The new continuous record stream gaging station installed in 

 cooperation with the Hawaiian Sugar Co. was completed. This 

 station, in connection with the Olokele ditch measurement station, 

 will show the entire run-off from the Olokele upper valley. 



Construction work on the new Kainia river continuous record 

 gaging stations was started and will be completed in April. 



Ten stream measurements were made and ten mountain rain 

 gages were visited during the month. A new copper rain gage 



