Water resources of Randolph and Lawrence Counties, Arkansas

Abstract

Bacterial quality._____________________________________ Use of water._____________________________________________________ Conclusions-______________________________________________________ 43 Selected references.________________________________________________ Page FIGURES 4-6. Graphs Continued 6. Eleven Point River near Raven den Springs and Strawberry River near Poughkeeps^'e (Sharp County)-______.___.___-.________ B8 7. Flow-duration curves for continuous-record gaging stations.________________________________________ 8. Map showing dissolved-solids content and hardness as CaCO3 at sampling stations during periods of low flow. _ 23 9. Dissolved-solids and temperature-duration curves for Spring River at Imboden and Black River ner.r Corning (Clay County)-_-___-__._-_____________ 10. Diagram showing well-numbering system._____________ 26 11-14. Maps showing: 11. Thickness of deposits of Quaternary age ________ 27 12. Configuration of the water table in deposits of Quaternary age, spring 1966____-_-___-_-_-__ 13. Configuration of the water table in deposits of Quaternary age, fall 1966_-__-___-14. Water-level declines in deposits of Quaternary age, spring to fall 1966_________-_._____._-31 15. Hydrographs of wells 19N-2E-9dbd, 18N-lE-34abd, and 15N-lW-llddd-__-__-______________-_-______-_ 16. Map showing areas of potential development of ground water from the Wilcox Group and the Nacato?.h Sand. _ 33 17. Map showing dissolved-solids and combined iron and manganese content of water from selected wells in the Coastal Plain__-___-_____________________ 18. Map showing dissolved-solids content and hardness as CaCOa of water from selected wells in th^ Interior Highlands. __________________________ 40 TABLES Page TABLE 1. Low-flow characteristics of streams___-_-___-______-_ B9 2. Magnitude and frequency of floods at continuous-record gaging stations.___-____-____-___-_-__-_____-__ 3. Selected chemical analyses of water from streams.______ 16 4. Inventory of information on the quality of surface water in the vicinity of Randolph and Lawrence Counties, Ark__-___________________________-___-________-5. Specific capacity of selected wells in deposits of CJ uaternary age___________________________________________ 6. Chemical analyses of water from wells in Quaternary and Tertiary deposits of the Coastal Plain.._________ 7. Chemical analyses of water from wells in Paleozoic rocks of the Interior Highlands.