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Water-quality assessment of the eastern Iowa basins: Data, September 1995 through September 1996

Open-File Report 99-66

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Abstract

The U.S. Geological Survey began data-collection activities in the Eastern Iowa Basins study unit of the National Water-Quality Assessment Program in September 1995 with the purpose of determining the status and trends in water quality. Surface-water data were collected, beginning in March 1996, on a monthly basis with occasional extra high- and low-flow samples. Data collected from 12 sites on rivers and streams in the study unit included determinations of the physical properties and concentrations of nutrients, major ions, organic carbon, trace elements, suspended sediment, and dissolved pesticides. Data collected at four additional sites included physical parameters and determination of the concentration of dissolved pesticides. In addition, bed-sediment and fish-tissue samples were collected at 16 sites and analyzed for trace elements and hydrophobic pesticides. There were two ground-water studies conducted in June and July 1996. The first looked at the quality of ground water in the Silurian-Devonian and Upper Carbonate aquifers and sampled 33 wells once, and the second examined the effects of agriculture on shallow ground water of the Iowa River alluvial aquifer and sampled 23 wells once. Ground-water samples were analyzed for physical properties, nutrients, major ions, organic carbon, trace elements, dissolved pesticides, and volatile organic compounds.

Study Area

Table of Contents

Abstract
Introduction
     Purpose and Scope
     Description of the Eastern Iowa Basins
Implementation of Water-Quality Studies
     Surface-Water-Quality Data Collection
          Sampling Sites
          Surface-Water Sample
          Biologic Sample Collection
          Analytical Procedures
     Ground-Water-Quality Data
          Geohydrology
          Site Selection
          Ground-Water Sample
          Analytical Procedures
     Water-Quality Analysis and Quality Control
          Surface Water
          Biology
          Ground Water
Acknowledgments
Selected References
Hydrologic and Biologic Data

Additional publication details

Publication type:
Report
Publication Subtype:
USGS Numbered Series
Title:
Water-quality assessment of the eastern Iowa basins: Data, September 1995 through September 1996
Series title:
Open-File Report
Series number:
99-66
Year Published:
1999
Language:
English
Publisher:
U.S. Geological Survey
Publisher location:
Reston, VA
Contributing office(s):
Iowa Water Science Center
Description:
viii, 154 p. : maps ; 28 cm.
Country:
United States
State:
Iowa, Minnesota
Online Only (Y/N):
N
Additional Online Files (Y/N):
N