341 



Data Furnished Honolulu Water Supply Commission. 



At the request of the chairman of the commission a consider- 

 able amount of data have been furnished the commission. Ar- 

 rangements have been made whereby data or information, which 

 may be of value to this commission, will be forwarded to it as 

 rapidly as these become available. 



jp/5-7975 Biennial Report. 



A biennial report for the biennial period ending June 30, 1915, 

 which will include all data collected by this division during that 

 period, is being prepared and will be available in blue print form 

 by December 31, 1915. It is estimated that this report, which in- 

 volves an immense amount of computations and office work, is 

 now about 95 per cent, completed. 



There has been a much greater demand during the past three 

 months for hydrometric data than ever before, and the office 

 force has been kept busy preparing data for special localities in 

 order that these may be used in the near future. 



Requests have been received for data relative to the streams 

 and ditches of the districts of Laie, Punaluu, Heeia, Kaneohe, 

 Kahanaiki, Kailua, Makawao, and all streams in the vicinity of 

 Honolulu on Oahu ; for the Waihee, Waiehu, lao, and Waikapu 

 districts on West Maui and all waters on East Maui ; for the Ana- 

 hola, Kapaa, North and South Wailua districts on Kauai ; and 

 for the Wailuku district on Hawaii. 



Flood Storage Near Laie, Oahu. 



The Laie Plantation is planning the storage of flood waters of 

 the Koloa and Wailele streams. Continuous record stream gaug- 

 ing stations were established on these stream in July, 1914, by 

 this office in cooperation with and at the expense of the planta- 

 tion. Operation of these stations has uncovered the necessity of 

 the construction of permanent concrete controls in order that 

 the data obtained may be of more accuracy. The plantation is 

 paying for the construction of these controls, which are being 

 constructed by this office. This work has been started and will 

 be completed during the present month. 



It is believed that the information supplied by these measure- 

 ment stations will enable Laie Plantation to supplant its present 

 pumping plants by a gravity water supply system which will sup- 

 ply irrigation at a great saving of cost. 



Nezv Construction. 



The construction of the three new continuous record stream 

 measurement stations on the three main branches of the Waimea 



