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Mississippi Water Science Center

Water Resources Data
Mississippi
Water Year 2005

By Fred Morris III, Michael S. Runner, Kenneth E. Burks, Michael A. Manning

U.S. Geological Survey
Water-Data Report MS-05-1


Introduction

The Water Resources Discipline (WRD) of the U.S. Geological Survey (USGS), in cooperation with State, county, municipal, and other Federal agencies, obtains a large amount of data pertaining to the water resources of Mississippi each water year. These data, accumulated during many water years, constitute a valuable data base for developing an improved understanding of the water resources of the State. To make these data readily available to interested parties outside the U.S. Geological Survey, the data are published annually in this report series entitled "Water Resources Data - Mississippi."

Water resources data for this water year for Mississippi consists of records of surface water and ground water in the State. Specifically, it contains: (1) Discharge records for 85 streamflow-gaging stations, stage records for 17 of these gaging stations, discharge records for 101 partial-record stations or miscellaneous streamflow sites, including 8 flood hydrograph partial-record stations, 93 crest-stage partial-record stations and 0 special study and miscellaneous sites; (2) stage only at 2 gaging station; (3) water-quality records for 12 streamflow-gaging stations, 11 stage-only stations, 2 water-quality monitor stations, 0 partial-record stations or miscellaneous sites, 64 short-term study sites, and 30 wells; and (4) water-level records for 20 observation wells. Records obtained from water-resources investigations are also included in special sections of the report. Records included for stream stages are only a small fraction of those obtained during the water year.

This series of annual reports for Mississippi began with the 1961 water year with a report that contained only data relating to the quantities of surface water. For the 1964 water year, a similar report was introduced that contained only data relating to water quality. Beginning with the 1975 water year, the report format was changed to present, in one volume, data on quantities of surface water, quality of surface and ground water, and ground-water levels.

Prior to introduction of this series and for several water years concurrent with it, water-resources data for Mississippi were published in U.S. Geological Survey Water-Supply Papers. Data on stream discharge and stage and on lake or reservoir contents and stage, through September 1960, were published annually under the title "Surface-Water Supply of the United States, Parts 2B, 3B and 7." For the 1961 through 1970 water years, the data were published in two 5-year reports. Data on chemical quality, temperature, and suspended sediment for the 1941 through 1970 water years were published annually under the title "Quality of Surface Waters of the United States," and water levels for the 1935 through 1974 water years were published under the title "Ground-Water Levels in the United States." The above mentioned Water-Supply Papers may be consulted in the libraries of the principal cities of the United States and may be purchased from U.S. Geological Survey Information Service Center, Box 25286, Denver, CO 80225.

Publications similar to this report are published annually by the U.S. Geological Survey for all States. These official USGS reports have an identification number consisting of the two-letter State abbreviation, the last two digits of the water year, and the volume number; for example, "U.S. Geological Survey Water-Data Report MS-75-1." For archiving and general distribution, the reports for 1971-74 water years also are identified as water-data reports. These water-data reports are for sale in paper copy or in microfiche by the National Technical Information Service, U.S. Department of Commerce, Springfield, VA 22161.

Table of Contents

Preface
Report documentation page
Surface-water stations, in downstream order, by which records are published
Ground-water stations for which records are published
Discontinued surface-water-discharge or -stage-only stations
Discontinued surface-water-quality stations
Introduction
Cooperation
Summary of hydrologic conditions
          Surface water
                    Streamflow
                    Water quality
          Ground water
                    Ground-water levels
Downstream order and station number
Numbering system for wells and miscellaneous sites
Special networks and programs
Explanation of stage- and water-discharge records
          Data collection and computation
          Data presentation
                    Station manuscript
                    Peak discharge greater than base discharge
                    Data table of daily mean values
                    Statistics of monthly mean data
                    Summary statistics
          Identifying estimated daily discharge
          Accuracy of field data and computed results
          Other data records available
Explanation of precipitation records
          Data collection and computation
          Data presentation
Explanation of water-quality records
          Collection and examination of data
          Water analysis
Surface-water-quality records
          Classification of records
          Accuracy of the records
          Arrangement of records
          On-site measurements and sample collection
          Water temperature
          Sediment
          Laboratory measurements
          Data presentation
          Fixed value parameter codes
          Water-quality control data
          Blank samples
          Reference samples
          Replicate samples
          Spike samples
Explanation of ground-water-level records
          Site identification numbers
          Data collection and computation
          Data presentation
                    Water-level tables
                    Hydrographs
Ground-water-quality data
          Data collection and computation
          Laboratory measurements
Access to USGS water data
Definition of terms
Surface-water records
          Discharge at partial-record stations
                    Flood hydrograph partial-record stations
                    Crest-stage partial-record stations
          Water-quality data collected during short-term studies
Ground-water records
Index

Illustrations

Figures:

1.   Bacteriological sampling sites in three coastal Mississippi counties
2.   Bacteriological sampling sites in Hancock County, Mississippi
3.   Bacteriological sampling sites in Harrison County, Mississippi

4-6 Maps showing

4.   Bacteriological sampling sites in Jackson County, Mississippi
5.   Water-quality sampling sites in southeastern Mississippi
6.   Water-quality sampling sites in southeastern Mississippi

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U.S. Department of the Interior, U.S. Geological Survey
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