Surface Water - Alabama Department of Environmental Management

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Cahaba River (0315-0202) Sub-watershed: Cahaba River NRCS Sub-Watershed Number 150 Landuse: The Cahaba River sub-watershed drains 125 mi 2 in Perry and Dallas Counties. Land cover was mainly forest mixed with some pasture and crop lands. The entire length of the Cahaba River in this sub-watershed is designated as an Outstanding Alabama Water (ADEM 2003e). One municipal NPDES permit has been issued in the sub-watershed (Appendix B). Percent land cover estimated by local SWCD (Appendix A, ASWCC 1998) Forest Row crop Pasture Mining Urban Open Water Other 65% 10% 20% 0% 5% 0% 0% NPS impairment potential: Cahaba River was identified as a NPS priority sub-watershed in 1996 (O’Neil and Shepard 1997). GSA found the chemical/physical, habitat, and biological conditions of the tributary, Rice Creek, to be impaired by nonpoint runoff from the community of Marion, discharge from a WWTP, excessive sediment transport, excessive nutrients, and high bacteria concentrations. Based on information from the 1998 SWCD sub-watershed assessments, the main NPS concerns in the Cahaba River sub-watershed were runoff from crops, pastures, and forestry (Appendix D). Cahaba River was given a 3 rd priority sub-watershed rating by the local SWCD for resource concerns including excessive erosion of cropland and roads and roadbanks, overgrazed pastures, access of livestock to streams and bacteria in surface waters (Appendix I). Ratings for each NPS category based on values estimated during the SWCD sub-watershed assessment. Category Overall Potential Animal husbandry Aquaculture Row crop Pasture Mining Forestry Sediment Value 13 0.05 AU/ac 0.00% 10% 20% 0% 28% 1.0 ton/ac/yr NPS Potential L L L M M L M L Appendix D H H A A A I I Assessments: One sampling location was assessed duringADEM’s2002 NPS screening assessment of the BWC Basin Group (Appendix F). Waters Creek was reassessed at a sampling reach established in 1996 by GSA (Appendix E). Assessment stations located within the sub-watershed. Descriptions provided in Appendix E-1. Station Assessment Type Date Location Area (mi 2 ) WAT-1 Chemical, Habitat, Biological Classification 2002 Waters Cr. at AL Hwy 14 15 S Waters Creek: Located in the Fall Line Hills (65i) subecoregion, Waters Creek at WAT-1 was characterized by small sand and gravel riffles (Appendix J). Habitat quality was 70
Cahaba River (0315-0202) assessed as good during the 1996 and 2002 asesments (Appendix J, O’Neil and Shepard 1997). However, sediment deposition was noted as a problem at the site during the 2002 assessment. The macroinvertebrate community was generally in good condition during both asesments (Appendix K, O’Neil and Shepard 1997). Fish asesments conducted in 1996 and 2002 indicated impaired biological conditions (AppendixK, O’Neil and Shepard 1997). Screening-level water quality data suggested slightly elevated total organic carbon concentrations (Appendix M). Sub-watershed status: Cahaba River is recommended as a priority NPS sub-watershed due to the condition of the fish community of Waters Creek at WAT-1. The primary NPS concerns within the sub-watershed were runoff from crops, pastures, and forestry areas. 71
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SURFACE WATER QUALITY SCREENING ASS
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Table of Contents TABLE OF CONTENTS
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List of Figures LIST OF FIGURES 1 C
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List of Abbreviations LIST OF ABBRE
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Introduction INTRODUCTION Backgroun
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Introduction document includes a de
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Introduction Table 1, cont. List of
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Methodology Table 7. Sub-watersheds
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Methodology Fig. 1. Cataloging unit
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Methodology Fig. 2. Level IV Ecoreg
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Methodology The southern section of
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Methodology The Southern Table Plat
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Methodology Table 8. Current conver
Page 27 and 28: Methodology SITE SELECTION Alabama
Page 29 and 30: Methodology Process samples in the
Page 31 and 32: Methodology Water quality samples a
Page 33 and 34: Summary: BWC River Basins Summary:
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Page 37 and 38: Summary: BWC River Basins Fig. 4. E
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Page 57 and 58: Summary: BWC River Basins Results o
Page 59 and 60: Summary: BWC River Basins Impaired
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Page 63 and 64: Summary: BWC River Basins Table 5,
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Page 67 and 68: Cahaba River (0315-0202) Cahaba Riv
Page 69 and 70: Cahaba River (0315-0202) Types of a
Page 71 and 72: Cahaba River (0315-0202) Fig. 15. I
Page 73 and 74: Cahaba River (0315-0202) Sub-Waters
Page 75 and 76: Cahaba River (0315-0202) suspended
Page 77: Cahaba River (0315-0202) indicating
Page 81 and 82: Cahaba River (0315-0202) Assessment
Page 83 and 84: Mulberry Fork (0316-0109) Program (
Page 85 and 86: Mulberry Fork (0316-0109) Fig. 16.
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Page 89 and 90: Mulberry Fork (0316-0109) Assessmen
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Page 97 and 98: Mulberry Fork (0316-0109) Eightmile
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Page 105 and 106: Mulberry Fork (0316-0109) Sub-Water
Page 111 and 112: Mulberry Fork (0316-0109) Bunkum Cr
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Page 121 and 122: Mulberry Fork (0316-0110) waters. A
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Page 125 and 126: Sipsey Fork (0316-0110) Sub-Watersh
Page 127 and 128: Sipsey Fork (0316-0110) and GSA (Ap
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Sipsey Fork (0316-0110) Assessment
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Sipsey Fork (0316-0110) Sub-Watersh
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Sipsey Fork (0316-0110) unstable ba
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Sipsey Fork (0316-0110) conditions
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Locust Fork (0316-0111) Historical
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Locust Fork (0316-0111) Fig. 18. 20
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Locust Fork (0316-0111) Upper Locus
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Locust Fork (0316-0111) ADEM 1999a)
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Locust Fork (0316-0111) and fair/po
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Locust Fork (0316-0111) bottom subs
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Locust Fork (0316-0111) Assessment
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Locust Fork (0316-0111) oxygen. ADE
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Locust Fork (0316-0111) Longs Branc
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Upper Black Warrior River (0316-011
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Lower Black Warrior River (0316-011
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References ACES. 1997. Soil areas o
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References ADEM. 2002b. Nonpoint so
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References APHA, AWWA, and WEF. 199
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References Omernik, J.M. 1996. Leve
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APPENDICES
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Appendix A, cont. Land use percenta
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Appendix B--Page 1 of 3 Appendix B.
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Appendix B--Page 3 of 3 Appendix B,
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Appendix C-2. List of waterbodies w
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Appendix C-2, cont. List of waterbo
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Appendix D, cont. Estimates of (H)i
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Appendix D cont. Estimates of (H)ig
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Appendix E. Stations assessed in th
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Appendix F--Page 2 of 2 Appendix F,
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Appendix G, cont. Summary of assess
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Appendix H, cont. Estimates of anim
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Appendix I. Sedimentation estimates
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Appendix I, cont. Sedimentation est
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Appendix J, cont. Physical characte
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Appendix K. Bioassessment results f
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Appendix L-2. ADEM Glide/Pool habit
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ADEM — FIELD OPERATIONS DIVISION
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Appendix M--Page 2 of 3 Appendix M.
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Appendix N. Concentration of metals
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Appendix O-1. Physical characterist
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Appendix O-3. Physical/chemical dat
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Appendix O-3--Page 3 of 4 Appendix
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Appendix P. §303(d) Waterbody Moni
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Appendix P-1. Physical characterist
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Appendix P-2. Bioassessment results
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Appendix P-3. Physical/chemical dat
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Appendix Q. Periphyton Bioassessmen
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Appendix Q--Page 2 of 2 Appendix Q.
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Appendix R--Page 1 of 5 Appendix R.
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Appendix S--Page 1 of 9 Appendix S.
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Appendix S. Physical/chemical data
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Appendix T-1. Results of habitat as
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Appendix T-1. Results of habitat as
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Appendix T-2--Page 1 of 1 Appendix
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Surface Water - Alabama Department of Environmental Management

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