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Station List for the Islands of Oahu, Molokai, Maui, and Hawaii Open-File Report 81-1056-A

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UNITED STATES DEPARTMENT OF THE INTERIOR GEOLOGICAL SURVEY SUMMARY OF AVAILABLE DATA ON SURFACE WATER, STATE OF HAWAII Volume 2-General Information and Station List for the Islands of Oahu, Molokai, Maui, and Hawaii Open-File Report 81-1056-A Prepared in cooperation with the DIVISION OF WATER AND LAND DEVELOPMENT DEPARTMENT OF LAND AND NATURAL RESOURCES Honolulu, Hawaii December, 1983 SUMMARY OF AVAILABLE DATA ON SURFACE WATER, STATE OF HAWAII VOLUME 2: GENERAL INFORMATION AND STATION LIST FOR THE ISLANDS OF OAHU, MOLOKAI, MAUI, AND HAWAII By Iwao Matsuoka U.S. GEOLOGICAL SURVEY Open-File Report 81-1056 Prepared in cooperation with the DIVISION OF WATER AND LAND DEVELOPMENT DEPARTMENT OF LAND AND NATURAL RESOURCES STATE OF HAWAII Honolulu, Hawai i December 1983 UNITED STATES DEPARTMENT OF THE INTERIOR JAMES G. WATT, Secretary GEOLOGICAL SURVEY Dallas L. Peck, Director For additional information Copies of this report write to: may be purchased from: U.S. Geological Survey, WRD U.S. Geological Survey Rm. 6110, 300 Ala Moana Blvd, Open-File Services Section Honolulu, Hawaii 96813 Branch of Distribution Box 25425, Federal Center Denver, Colorado 80225 GEORGE R. ARIYOSHI Governor BOARD OF LAND AND NATURAL RESOURCES SUSUMU ONO, Chairman, Member at Large ROLAND HI GASH I, Hawaii' Member STANLEY W. HONG, Member at Large J. DOUGLAS ING, Oahu Member TAKEO YAMAMOTO, Kauai Member DEPARTMENT OF LAND AND NATURAL RESOURCES SUSUMU ONO, Chairman and Member Board of Land and Natural Resources EDGAR A. HAMASU, Deputy to the Chairman ROBERT T. CHUCK, Manager-Chief Engineer Division of Water and Land Development CONTENTS Page Abstract 1 Intreduction ------------ _________-__-- ______ _____________ _ 2 Background ----- --________ _ ___ ________ _________ 2 Purpose and scope ----- --- --- _-__--__ ____ _ ___ ____ 2 Criteria for data presentation - 3 Acknowledgment ---- ---_ _ ___________ __ ___ _ ______ 4 Presentation of data - 5 General information and station list ---------- ______ _- --- - 5 Station location map - - 6 Data and statistical tables - 7 Surface-water-discharge data --- ---- __________ _-__ 7 Surface-water-quality data - --- ---- - - --------- 11 Sample tables with explanations - 11 Publi cat ions -- -- - - --- - --- -- __-_-____-_ 19 References 22 General information summary and station list for the Islands of Oahu, Molokai, Maui, and Hawaii --------- -- ____ ________ 23 Data and statistical tables 36 Alphabetical station list and corresponding station number - 37 IV CONVERSION TABLE The following table may be used to convert measurements in the inch-pound system to the International System of Units (SI). Multiply inch-pound units To obtain SI units Length foot (ft) 0.3048 meter (m) mile (mi) - 1.609 kilometer (km) Area acre 4,047 - square meter (m 2 ) 2 2 square foot (ft ) 0.0929 - square meter (m ) 2 2 square mile (mi ) 2.590 square kilometer (km ) Volume acre-foot (acre-ft) 1,233 - cubic meter (m ) cubic foot (ft*) 0.02832 cubic meter (m3 ) gallon (gal) 3.785 liter (L) million gallons (10 gal or Mgal) 3,785 ---- cubic meters (m ) Volume Per Unit Time (includes Flow) cubic foot per second (ft /s) 0.02832 cubic meter per second (m /s) cubic foot per second-day (ft3/s)-d 2,447 cubic meter (m3 ) gallon per minute (gal/min) 0.06309 liter per second (L/s) gallons per day (gal/d) 90.85 - liter per second (L/s) million gallons per day (10 gal/d or Mgal/d) 0.04381 cubic meter per second (nrr/s) Miscellaneous cubic foot per second per cubic meter per second per 7 2 32 square mile (ft /s)/mi 0.01093 square kilometer (m /s)/km SUMMARY OF AVAILABLE DATA ON SURFACE WATER, STATE OF HAWAII VOLUME 2: GENERAL INFORMATION AND STATION LIST FOR THE ISLANDS OF OAHU, MOLOKAI, MAUI, AND HAWAII By Iwao Matsuoka ABSTRACT This report presents explanations of the statistical summaries of available surface-water discharge records and tabulations of surface-water-quality para­ meters at data-collection sites on the islands of Oahu, Molokai, Maui and Hawaii. The report includes a brief history of the stream-gaging program of the Water Resources Division of the U.S. Geological Survey in Hawaii. It also includes concise site description and information, explanations and sample tables, various monthly and annual discharges, lowest and highest mean discharges for each year for specified numbers of consecutive days, statistics for monthly and annual mean discharges, and tabulation and summary of surface- water-quality data. Water-quality parameters include sediment and phytoplankton data. INTRODUCTION Background Water data are the basic information used in determining the quantity, quality, and sufficiency of the water resource. Rational evaluation, develop­ ment, management and control of the surface-water resource require a knowledge of the flow characteristics and quality of the water. The State of Hawaii recently reeyaluated its existing water-quality standards and identified the need for instream use criteria. Hawaii laws do not now specif ical ly-provide .for the protection or preservation,of instream uses. Standards are needed on which to base regulation to protect water quality and quantity and to insure multiple beneficial utilization of stream waters for a variety of uses such as recreation, habitat for fish and wildlife, irrigation, aesthetic appreciation, and industrial applications. A major problem in the development of the instream use criteria is the lack of a consolidated environ­ mental data base. Purpose and scope Reports for the major islands are being prepared to provide a statewide surface-water data base. This data base will be a major part of the consolidated environmental data base needed by the State of Hawaii, Department of Land and Natural Resources, Division of Water and Land Development to develop instream use criteria and accompanying regulations. Since the beginning of its stream-gaging program in 1909, the U.S. Geological Survey has collected surface-water data at approximately 660 data- collection sites on the five major islands (Kauai, Oahu, Maui, Molokai, and Hawaii) of the State of Hawaii. This report, for Oahu, Molokai, Maui, and Hawaii, provides a listing of the sites as of September 30, 1979. Some sites from which the Geological Survey obtained data collected by others are also included. These data were collected mainly before and shortly after 1909. The listing includes location, site type, drainage area, altitude, diversion or inflow, period of operation, type of surface-water discharge and quality data available. Surface-water discharge data collected at the continuous record sites on Oahu, Molokai, Maui, and Hawaii are summarized. Where sufficient data are available for a station, streamflow characteristics, such as frequency statis­ tics and duration tables, are determined. Any significant diversions out of or inflows into a drainage basin of a streamflow station during the period of operation are noted. .<*- . Most of the surface-water-quality data collected by the Geological Survey has been gathered in the last 12 years. These data are tabulated by sites and statistical summary of the data presented. This report updates and extensively augments G. T. Hirashima's report, "Flow Character}sties of Selected Streams in Hawaii," (1965) for the Islands of Oahu, Molokai, Maui, and Hawaii. References to publications which provide tables of daily discharges, detailed station descriptions, or discharges at partial- record or miscellaneous measurement sites are listed elsewhere in this report for the interested user. Criteria for data presentation In order to condense the voluminous data and to present meaningful summaries, the following criteria were established for including certain data in this report: 1. Statistical analyses using the log-Pearson type III frequency distribu­ tion will be made and summarized for springs or streamflow stations with daily values for 10 or more complete years of record. This type of analysis is not appropriate for stations with short records or for those ditch, drain, or canal stations for which flows are highly regu­ lated. 2. Of the stations selected to determine the statistical summaries in "1" above, low-flow frequency summaries will not be included for ephemeral streams because the log-Pearson type III frequency analysis method for records with zero-values tends to distort the very low-flow portion of the frequency curve. 3. If daily values for a month are incomplete, that particular month and the corresponding water year will not be used in the statistical analyses. 4. Partial-record water-quality analysis results will not be included if only the water temperature and instantaneous discharge data are avail­ able for a sample. This eliminates many of the water-temperature observations that were made at the time when stream-discharge measure­ ments were made. 5. For stations where continuous records of water-quality data are obtained, monthly and annual summaries will be made. Acknowledgment This report was prepared by the Hawaii District of the U.S. Geological Survey, Water Resources Division, in cooperation with the State of Hawaii, Department of Land and Natural Resources, Division of Water and Land Development. PRESENTATION OF DATA The report is divided into the following six volumes: Volume 1: General information and station list, station location maps, and data and statistical tables for the Island of Kauai. Volume 2: General information and station list for the islands of Oahu, Molokai, Maui, and Hawaii. Volume 3: Station location maps for the islands of Oahu, Molokai, Maui, and Hawa i i. Volume 4: Data and statistical tables for Oahu. Volume 5: Data and statistical tables for Molokai and Maui. Volume 6: Data and statistical tables for the island of Hawaii. There are three types of data for each island: (1) general information and station list; (2) station location maps; and (3) data and statistical tables. Because of the criteria used for including data in this report, many stations will not have any data and statistical tables, while others will have only a few tables.
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