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Scientific Investigations Report 2014–5242

Prepared in cooperation with the Indiana Department of Environmental Management

Low-Flow Characteristics for Selected Streams in Indiana

By Kathleen K. Fowler and John T. Wilson

Thumbnail of and link to report PDF (9.36 MB)Abstract

The management and availability of Indiana’s water resources increase in importance every year. Specifically, information on low-flow characteristics of streams is essential to State water-management agencies. These agencies need low-flow information when working with issues related to irrigation, municipal and industrial water supplies, fish and wildlife protection, and the dilution of waste. Industrial, municipal, and other facilities must obtain National Pollutant Discharge Elimination System (NPDES) permits if their discharges go directly to surface waters. The Indiana Department of Environmental Management (IDEM) requires low-flow statistics in order to administer the NPDES permit program. Low-flow-frequency characteristics were computed for 272 continuous-record stations. The information includes low-flow-frequency analysis, flow-duration analysis, and harmonic mean for the continuous-record stations. For those stations affected by some form of regulation, low-flow frequency curves are based on the longest period of homogeneous record under current conditions. Low-flow-frequency values and harmonic mean flow (if sufficient data were available) were estimated for the 166 partial-record stations. Partial-record stations are ungaged sites where streamflow measurements were made at base flow.

First posted February 2, 2015

For additional information, contact:
Director, Indiana Water Science Center
U.S. Geological Survey
5957 Lakeside Blvd
Indianapolis, IN 46278
http://in.water.usgs.gov/

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Suggested citation:

Fowler, K.K., and Wilson, J.T., 2015, Low-flow characteristics for selected streams in Indiana: U.S. Geological Survey Scientific Investigations Report 2014–5242, 353 p., http://dx.doi.org/10.3133/sir20145242.

ISSN 2328–0328 (online)



Contents

Abstract

Introduction

Methods of Analysis at Gaging Stations

Summary

References Cited


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