CPYRWMA Flood Warning System Percentile Rankings
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GEOLOGICAL SURVEY OF ALABAMA Berry H. (Nick) Tew, Jr. State Geologist CHOCTAWHATCHEE, PEA AND YELLOW RIVERS WATERSHED MANAGEMENT AUTHORITY FLOOD WARNING SYSTEM PERCENTILE RANKINGS Open-File Report 1703 by Amye S. Hinson Co-Sponsored by the Choctawhatchee, Pea and Yellow Rivers Watershed Management Authority Tuscaloosa, Alabama 2017 CONTENTS Abbreviations and Acronyms .......................................................................................... vii Measurement Conversion Chart ...................................................................................... ix Executive Summary ......................................................................................................... xi Introduction ....................................................................................................................... 1 Acknowledgements ........................................................................................................... 1 Study Area ........................................................................................................................ 1 Previous Studies ............................................................................................................... 4 Methodology ..................................................................................................................... 4 Flood Warning System ..................................................................................................... 6 Barbour County ........................................................................................................... 6 Texasville ............................................................................................................... 8 Coffee County ............................................................................................................. 8 Big Creek ............................................................................................................... 8 Elba ...................................................................................................................... 11 Folsom Bridge ...................................................................................................... 11 Lowry Mill ............................................................................................................. 11 Covington County ...................................................................................................... 14 Yellow River Alabama Highway 55 ...................................................................... 14 Yellow River U.S. Highway 84 ............................................................................. 18 Dale County ............................................................................................................... 18 Ariton .................................................................................................................... 18 Daleville 1 ............................................................................................................ 18 Daleville 2 ............................................................................................................ 21 Newton ................................................................................................................. 21 Ozark ................................................................................................................... 25 Skipperville ........................................................................................................... 25 Geneva County ......................................................................................................... 29 Geneva ................................................................................................................ 29 Sellersville ............................................................................................................ 29 Henry County ............................................................................................................ 32 East Fork .............................................................................................................. 32 Houston County ......................................................................................................... 32 Dothan ................................................................................................................. 32 Pike County ............................................................................................................... 36 Conclusions and Recommendations .............................................................................. 36 References Cited ............................................................................................................ 37 Appendix A ..................................................................................................................... 39 TABLES Table 1. Location of Flood Warning System gages in Choctawhatchee, Pea and Yellow River Watersheds in southeastern Alabama ...................................... 7 CONTENTS—Continued FIGURES Figure 1. Choctawhatchee, Pea and Yellow Rivers watersheds in southeastern Alabama ......................................................................................................... 2 Figure 2. Physiographic districts in the Choctawhatchee, Pea, and Yellow Rivers region ............................................................................................................. 2 Figure 3. Geologic map for the Choctawhatchee, Pea and Yellow Rivers watersheds ..................................................................................................... 5 Figure 4. Hydrograph for Texasville river gage on East Fork Choctawhatchee River in Barbour County, Alabama ................................................................ 9 Figure 5. Texasville river gage on East Fork Choctawhatchee River in Barbour County, Alabama ........................................................................................... 9 Figure 6. Hydrograph for Big Creek river gage on Big Creek in Coffee County, Alabama ....................................................................................................... 10 Figure 7. Big Creek river gage on Big Creek in Coffee County, Alabama .................. 10 Figure 8. Hydrograph for Elba river gage on Pea River in Coffee County,Alabama .......................................................................................... 12 Figure 9. Elba river gage on Pea River in Coffee County, Alabama ........................... 12 Figure 10. Hydrograph for Folsom Bridge river gage on Pea River in Coffee County, Alabama ......................................................................................... 13 Figure 11. Folsom Bridge river gage on Pea River in Coffee County, Alabama ........... 13 Figure 12. Hydrograph for Lowry Mill river gage on Whitewater Creek in Coffee County, Alabama ......................................................................................... 15 Figure 13. Lowry Mill river gage on Whitewater Creek in Coffee County, Alabama ....................................................................................................... 15 Figure 14. Hydrograph for Yellow River Alabama Highway 55 river gage on Yellow River in Covington County, Alabama ............................................... 16 Figure 15. Normalized hydrograph for Yellow River Alabama Highway 55 river gage on Yellow River in Covington County, Alabama ................................. 16 Figure 16. Yellow River Alabama Highway 55 river gage on Yellow River in Covington County, Alabama ........................................................................ 17 Figure 17. Normalized percentiles for Yellow River Alabama Highway 55 river gage on Yellow River in Covington County, Alabama ................................. 17 Figure 18. Hydrograph for Yellow River U.S. Highway 84 river gage on Yellow River in Covington County, Alabama ........................................................... 19 Figure 19. Yellow River U.S. Highway 84 river gage on Yellow River in Covington County, Alabama ......................................................................................... 19 Figure 20. Hydrograph for Ariton river gage on the Pea River in Dale County, Alabama ....................................................................................................... 20 Figure 21. Ariton river gage on the Pea River in Dale County, Alabama ...................... 20 Figure 22. Hydrograph for Daleville 1 river gage on Claybank Creek in Dale County, Alabama ......................................................................................... 22 iv CONTENTS—Continued Figure 23. Daleville 1 river gage on Claybank Creek in Dale County, Alabama ........... 22 Figure 24. Hydrograph for Daleville 2 river gage on Choctawhatchee River in Dale County, Alabama ......................................................................................... 23 Figure 25. Daleville 2 river gage on Choctawhatchee River in Dale County, Alabama ....................................................................................................... 23 Figure 26. Hydrograph for Newton river gage on Choctawhatchee River in Dale County, Alabama ......................................................................................... 24 Figure 27. Newton river gage on Choctawhatchee River, Alabama ............................. 24 Figure 28. Hydrograph for Ozark river gage on