42 



Of ihc above, the live stations established on Kauai and ]Maui 

 are Stevens clock register stations, and the eighteen on Oahu staff 

 gag'e stations. 



The three stations discontinued on Kauai were ditch stations, 

 which had served their purposes. The two stations discontinued 

 on Oahu were on the Lulumaha and Pauoa streams. Three sta- 

 tions were not g'iving reliable results. 



Rccofuiaissaucc Work oji Oahu. 



A considerable part of the month was .spent in making les 

 reconnaissance of the water serving valleys of windward Oahu. 

 All streams from, and including the Honolulu basin, around 

 the island counter-clock-wise as far as the Kahaluu valley are 

 now under investigation. In addition to these, stations are beinj? 

 maintained on the ^Vaiahole stream at a low level, and on the 

 two branches of the Kaukonahua on leeward ( )ahu above all 

 diversions. 



Station sites have been selected on the streams in the Kahaluu, 

 Waihee, Kaalaea, Waianu, Waikane, Kahana, and Punaluu val- 

 leys during the month. The Waiahole Tunnel project will pick 

 up all of the low water discharge of the Waiahole, Waianu, Wai- 

 kane and Kahana streams at an elevation of about 750 feet 

 above sea level. At this elevation the streams are broken into 

 many feeders, and the cost of establishing and maintaining a 

 station on each stream above the proposed tunnel intakes would 

 be excessive. The water company will i)robably maintain suf- 

 ficient discharge measurement stations on the tunnel line to deter- 

 mine the amount diverted from each valley. The present station 

 on the Waiahole and the proposed stations on the Waianu, Wai- 

 kane, and Kahana streams below the tunnel line will determine 

 the run-off from these valleys, which is not diverted. 



M olokai Rci'oiniaissiUtcc. 



On l'\-bruary 10 C. T. liailey and the undersigned will go to 

 Molokai to make an extended reconnaissance of that island. 

 The officials of the American Sugar Company of that island have 

 agreed to provide all transportation facilities. 



/y/j Pr(>_i:;rcss Kcf^orl. 



The assembling and computation work in connection with the 

 V)\^ Progress Ke])ort was about ninety per cent completed on 

 January 31. The work has been somewhat retarded by the de- 

 layed receipt of field data from Kauai. The construction work 

 on Kauai and Maui was not suspended during the month and iti- 

 terfered to some dej^'ree with the work of getting field data into 

 til is office. 



