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Division of Hydrography 



Honolulu, Hawaii, August 9, 1916. 



Board of Commissioners of Agriculture and Forestry, 

 Honolulu, T. H. 



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

 sion of Hydrography during July, 1916, is submitted: 



Weather Conditions. 



With the exception of the third week in the month, during 

 which abundant heavy showers fell on Hawaii, Oahu, and part 

 of Maui, the month was one of light rainfall. Frequent light 

 showers kept vegetation in good condition, but generally streams 

 and ditches are drawing down to a very low flow. Flood storage 

 reservoirs generally contain very little water. No. 4 Reservoir 

 of the City of Honolulu on July 31 had but 26 feet of water in it. 



Kauai Flood Storage Reconnaissance. 



The upper valleys of the North Wailua. Kapaa, and Anahola 

 basins were visited and several possible flood storage reservoir 

 sites worthy of further investigation were found at elevations of 

 from 400 to 700 feet above sea level. 



A similar investigation will be made in the headwaters of the 

 Waimea River in September. 



Territorial WatEr Commission Work. 



The services of Assistant Engineers R. C. Rice and R. D. Klise 

 during the month were entirely devoted to work for the Terri- 

 torial Water Commission. A considerable part of the time of 

 the Superintendent, who is chairman of this commission, was also 

 expended on this work. 



Operation and Maintenance W^ork. 



Kauai. Ten days were spent in collecting and checking coop- 

 erative ditch run-off and rainfall records for the fiscal year end- 

 ing June 30, 1916. 



The Lumahai River measurement station was overhauled and 

 repaired. 



A new cooperative ditch measurement station was established 

 on the Kuna ditch near Hanalei. 



Thirty-six stream and ditch. 17 rainfall, and 5 evaporation 



