Geology topics
J.A. Callahan
Publications and source records attributed to J.A. Callahan.
Water use in the Mississippi Gulf Coast counties, 1980
The population served by public water systems in the three counties of Mississippi 's Gulf Coast increased from about 227 ,000 to nearly 253,000 between 1975 and 1980. Water use by public systems increased from about 27.6 million gallons per day to more than 31.3 million gallons per day. Self-supplied industrial use of ground water decreased from about 18.4 to 17.7 million per day, and that for fresh surface water increased from about 42.3 to 56.1 million gallons per day. Total freshwater was including that for rural domestic supplies, increased from about 92.0 to 109 million gallons per day. Industrial use of brackish surface water decreased from about 790 to 660 million gallons per day. (USGS)
Estimated water use in Mississippi, 1980
Large quantities of good quality ground and surface water are readily available in nearly all parts of Mississippi, and there is also an abundant supply of saline water in the estuaries along the Mississippi Gulf Coast. The total estimated water use in the State in 1980 from groundwater and surface water was 3532 million gallons/day (mgd), including 662 mgd of saline water. Freshwater used from all sources in Mississippi during the period 1975 through 1980 increased from 2510 mgd to > 2870 mgd, a 14% increase. Although modest increases of freshwater use may be expected in public, self-supplied industrial, and thermoelectric supplies, large future increases in the use of freshwater may be expected primarily as a result of growth in irrigation and aquaculture. Management and protection of the quantity and quality of the available freshwater supply are often problems associated with increased use. Water use data, both temporal and spatial, are needed by the State of Mississippi to provide for intelligent, long-term management of the resources; one table gives data on the principal categories of water use, sources, and use by county. (Lantz-PTT)
Water use in Mississippi, 1975
Water use in Mississippi in 1975 amounted to 3,050 mgd (million gallons per day). The total represents pumpage of 1,130 mgd from ground-water sources and 1,920 mgd from surface-water sources. Included in the surface water pumpage are 540 mgd of brackish water from Back Bay of Biloxi. Public Supplies at Jackson in Hinds County and Meridian in Lauderdale County use both surface and ground water. Columbus in Lowndes County uses only surface water. All other public supplies in the State use ground water. A table shows the amount, source, and user of water used in each county of Mississippi during 1975. (Woodard-USGS)