USGS

Rainfall, Streamflow, and Water-Quality Data During Stormwater Monitoring, Halawa Stream Drainage Basin, Oahu, Hawaii, July 1, 2005 to June 30, 2006

Department of the Interior

U.S. Geological Survey

Open-File Report 2006-1223

 

By Todd K. Presley, Marcael T.J. Jamison, and Stacie T.M. Young-Smith

 

This report is available as a pdf.

 

Abstract

Storm runoff water-quality samples were collected as part of the State of Hawaii Department of Transportation Stormwater Monitoring Program. This program is designed to assess the effects of highway runoff and urban runoff on Halawa Stream. For this program, rainfall data were collected at two stations, continuous discharge data at one station, continuous streamflow data at two stations, and water-quality data at five stations, which include the continuous discharge and streamflow stations. This report summarizes rainfall, discharge, streamflow, and water-quality data collected between July 1, 2005 and June 30, 2006.

A total of 23 samples was collected over five storms during July 1, 2005 to June 30, 2006. The goal was to collect grab samples nearly simultaneously at all five stations, and flow-weighted time-composite samples at the three stations equipped with automatic samplers; however, all five storms were partially sampled owing to lack of flow at the time of sampling at some sites, or because some samples collected by the automatic sampler did not represent water from the storm.

Samples were analyzed for total suspended solids, total dissolved solids, nutrients, chemical oxygen demand, and selected trace metals (cadmium, chromium, copper, lead, nickel, and zinc). Additionally, grab samples were analyzed for oil and grease, total petroleum hydrocarbons, fecal coliform, and biological oxygen demand. Quality-assurance/quality-control samples were also collected during storms and during routine maintenance to verify analytical procedures and check the effectiveness of equipment-cleaning procedures.

Contents

Abstract

Introduction

Data-Collection Network

Water-Quality Sampling Techniques

Sampling Requirements

Storm Criteria

Sample Collection

Determination of Discharge

Sample Processing, Analysis, and Quality Assurance/Quality Control

Rainfall and Streamflow Data

Stormwater Sampling: Conditions and Results

Third Quarter 2005 - July 1 to September 30, 2005

Storm of July 12, 2005

Fourth Quarter 2005 - October 1 to December 31, 2005

First Quarter 2006 - January 1 to March 31, 2006

Storm of January 22-23, 2006

Storm of February 19-20, 2006

Storm of February 28-March 2, 2006

Second Quarter 2006 - April 1 to June 30, 2006

Storm of May 5, 2006

Quality Assurance

References Cited

Appendix A: Discharge-Reporting and Load-Calculation Methods

Appendix B: Physical Properties, Concentrations, and Loads for All Samples Collected from Halawa Stream Drainage Basin During the Period from July 1, 2005 to June 30, 2006, Oahu, Hawaii - Provided as an Excel file



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Suggested citation:


Presley, T.K., Ball, M.T.J., and Young, S.T.M., 2005, Rainfall, Streamflow, and Water-Quality Data During Stormwater Monitoring, Halawa Stream Drainage Basin, Oahu, Hawaii, July 1, 2005 to June 30, 2006: U.S. Geological Survey Open-File Report 2006-1223, 27 p.


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