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Scientific Investigations Report 2010–5111

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Prepared in cooperation with the Maryland Department of the Environment

Incorporation of Water-Use Summaries into the StreamStats Web Application for Maryland

By Kernell G. Ries III, Marilee A. Horn, Mark R. Nardi, and Steven Tessler

ABSTRACTThumbnail of and link to report PDF (3.37 MB)

Approximately 25,000 new households and thousands of new jobs will be established in an area that extends from southwest to northeast of Baltimore, Maryland, as a result of the Federal Base Realignment and Closure (BRAC) process, with consequent new demands on the water resources of the area. The U.S. Geological Survey, in cooperation with the Maryland Department of the Environment, has extended the area of implementation and added functionality to an existing map-based Web application named StreamStats to provide an improved tool for planning and managing the water resources in the BRAC-affected areas. StreamStats previously was implemented for only a small area surrounding Baltimore, Maryland, and it was extended to cover all BRAC-affected areas.

StreamStats could provide previously published streamflow statistics, such as the 1-percent probability flood and the 7-day, 10-year low flow, for U.S. Geological Survey data-collection stations and estimates of streamflow statistics for any user-selected point on a stream within the implemented area. The application was modified for this study to also provide summaries of water withdrawals and discharges upstream from any user-selected point on a stream. This new functionality was made possible by creating a Web service that accepts a drainage-basin delineation from StreamStats, overlays it on a spatial layer of water withdrawal and discharge points, extracts the water-use data for the identified points, and sends it back to StreamStats, where it is summarized for the user. The underlying water-use data were extracted from the U.S. Geological Survey’s Site-Specific Water-Use Database System (SWUDS) and placed into a Microsoft Access database that was created for this study for easy linkage to the Web service and StreamStats. This linkage of StreamStats with water-use information from SWUDS should enable Maryland regulators and planners to make more informed decisions on the use of water resources in the BRAC area, and the technology should be transferrable to other geographic areas.
First posted September 2010
Revised December 2010

For additional information contact:
Kernell G. Ries III,
Office of Surface Water
Phone 443-498-5617 or
Director,
MD-DE-DC Water Science Center
U.S. Geological Survey
5522 Research Park Drive
Baltimore, MD 21228

or visit the MD-DE-DC Water Science Center Web site at:
http://md.water.usgs.gov/
or the StreamStats Homepage at:
http://streamstats.usgs.gov/

Part or all of this report is presented in Portable Document Format (PDF); the latest version of Adobe Reader or similar software is required to view it. Download the latest version of Adobe Reader, free of charge.

Suggested citation:

Ries, K.G., III, Horn, M.A., Nardi, M.R., and Tessler, S., 2010, Incorporation of water-use summaries into the StreamStats web application for Maryland: U.S. Geological Survey Scientific Investigations Report 2010–5111, 18 p.


Contents

Abstract

Introduction

Purpose and Scope

Description of Study Area

StreamStats Implementation for Maryland

Site-Specific Water-Use Data System (SWUDS) and Available Water-Use Data

Development of a Linkage Between StreamStats and the Site-Specific Water-Use Data System (SWUDS)

Obtaining Streamflow Statistics and Water-Use Summaries from the Maryland StreamStats Web Application

Maryland StreamStats User Interface

Obtaining Streamflow Statistics for Data-Collection Stations

Estimating Streamflow Statistics by Use of Regression Equations and Obtaining Water-Use Summaries for Ungaged Sites

Estimating Streamflow Statistics for Ungaged Sites Based on the Flows at Nearby Streamgages

Estimating Streamflow Statistics for Ungaged Sites in the Bynum Anomaly

Limitations for Estimates of Streamflow and Water Use for Ungaged Sites

Summary and Conclusions

Acknowledgments

References Cited


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