271 

 DIVISION OF HYDROGRAPHY. 



Honolulu, Aug. 14, 1914. 



Board of Commissioners of Agriculture and Forestry. 



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

 sion of H3^drography for July, 1914, is respectfully submitted : 



Kauai. 



Heavy rainfall on the uplands and on windward Kauai con- 

 tinued during the month. A rain gage maintained at a new sta- 

 tion on the Lumahai stream at an elevation of about 700 feet 

 above the sea level has recorded an average of an inch a day 

 during the past two months. 



Mr. Dort, assisted by Mr. Horner, completed a Stevens auto- 

 matic clock register station on the Wainiha stream at an elevation 

 of about 850 feet above sea level, and about one and one-half 

 miles above the power canal intake. The construction of this 

 station, which will record the entire flow of the stream, consumed 

 the greater part of the month. This installation completes the 

 construction work started nearly a year past in relation to the 

 measurement of all large windward Kauai streams which, with 

 the exception of the Wainiha stream, are practically all wasting 

 into the sea. This group of streams is made up of the Wainiha, 

 Lumahai, Waioli, Hanalei and Kalihiwai streams, with an esti- 

 mated minimum discharge at the 750 feet level of about 260 mil- 

 lion gallons per 24 hours. It is believed that in time, these waters 

 will be diverted into a large irrigation and power project whicii 

 will serve leeward Kauai. For topographical reasons it is be- 

 lieved that the water will be diverted at an elevation of about 

 700 feet and the measurement stations were all established above 

 this level. 



The installation of these stations has involved an immense 

 amount of hardships and labor under the most adverse condition.^ 

 to be found on the island. Many miles of foot trail have been 

 constructed up the various valleys. All supplies to all but the 

 Wainiha station had to be carried in on men's backs and the work 

 was completed under disagreeable weather conditions. The sta- 

 tions are of a permanent type, and the records therefrom will 

 prove of immense value to Kauai water users. Of the five 

 streams, two, the Hanalei and Waioli, are owned by the Terri- 

 tory of Hawaii. 



Oahii. 



Seven cooperative clock register stations were established dur- 

 ing the month. Five of these, which were constructed and estab- 

 lished by Mr. Kimble, were Stevens automatic clock register sta- 

 tions for the Kahuku and Laie plantation companies on windward 

 Oahu. These stations will measure the run-off of the Malaeka- 



