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Division of Hydrography 



Honolulu, Hawaii, November 10, 1916. 



Board of Commissioners of Agriculture and Forestry, 

 Honolulu, Hawaii. 



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

 sion of Hydrography during October, 1916, is submitted: 



Weather Conditions. 



The rainfall in the mountains was generally excessive over all 

 the islands, while many of the lower valleys experienced dry 

 weather. On Kauai the mountain rainfall was heavy, resulting in 

 good discharges for all streams. On Oahu plentiful showers have 

 resulted in all streams and ditches being well filled during the 

 latter part of the month. Heavy showers on October 27 to 29 

 filled ditches to near capacity. The Hillebrand Glen measure- 

 ment station showed an average discharge of 470,000 gallons per 

 day for the month, a minimum of 60,000 gallons per day, and a 

 maximum of 2,950,000 gallons per day. On October 27th, 28th 

 and 29th the mean discharges were 1,020,000, 2,950,000, and 

 2,520,000 gallons, respectively. 



Territorial Water Commission. 



The superintendent spent a large portion of his time during the 

 month on his duties required as chairman of the Territorial Water 

 Commission. 



ipi6 Report. 



The 1916 report for the fiscal year ending June 30, 1916, was 

 completed and will be mailed to the Washington office of the U. S. 

 Geological Survey for printing by the next mail. This report 

 will show all detailed data, including daily, monthly, and annual 

 mean, maximum, and minimum discharges of all ditches, streams, 

 etc., under observation in the Hawaiian Islands, as well as a 

 large amount of mauka rainfall data w^iich are not published by 

 the U. S. Weather Bureau. Pending the printing of this report, 

 blue print copies of data are available without cost to interested 

 parties. 



