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HomeMy WebLinkAboutApp2_Broad_03Appendices Appendix II Water Quality Data Collected by DWQ • Benthic Macroinvertebrate Collections • Fish Community Collections A-II-1 Benthic Macroinvertebrate Sampling Methodology and Bioclassification Criteria Benthic macroinvertebrates can be collected using two sampling procedures. DWQ’s standard qualitative sampling procedure includes 10 composite samples: two kick-net samples, three bank sweeps, two rock or log washes, one sand sample, one leafpack sample, and visual collections from large rocks and logs. The purpose of these collections is to inventory the aquatic fauna and produce an indication of relative abundance for each taxon. Organisms are classified as Rare (1-2 specimens), Common (3-9 specimens) or Abundant (≥10 specimens). Several data analysis summaries (metrics) can be produced from standard qualitative samples to detect water quality problems. These metrics are based on the idea that unimpaired streams and rivers have many invertebrate taxa and are dominated by intolerant species. Conversely, polluted streams have fewer numbers of invertebrate taxa and are dominated by tolerant species. The diversity of the invertebrate fauna is evaluated using taxa richness counts; the tolerance of the stream community is evaluated using a biotic index. EPT taxa richness (EPT S) is used with DWQ criteria to assign water quality ratings (bioclassifications). "EPT" is an abbreviation for Ephemeroptera + Plecoptera + Trichoptera, insect groups that are generally intolerant of many kinds of pollution. Higher EPT taxa richness values usually indicate better water quality. Water quality ratings are also based on the relative tolerance of the macroinvertebrate community as summarized by the North Carolina Biotic Index (NCBI). Both tolerance values for individual species and the final biotic index values have a range of 0-10, with higher numbers indicating more tolerant species or more polluted conditions. Water quality ratings assigned with the biotic index numbers are combined with EPT taxa richness ratings to produce a final bioclassification, using criteria for mountain/piedmont/coastal plain streams. EPT abundance (EPT N) and total taxa richness calculations also are used to help examine between-site differences in water quality. If the EPT taxa richness rating and the biotic index differ by one bioclassification, the EPT abundance value is used to determine the final site rating. Benthic macroinvertebrates can also be collected using the DWQ’s EPT sampling procedure. Four composite samples are taken at each site instead of the 10 taken for the qualitative sample: 1 kick, 1 sweep, 1 leafpack and visual collections. Only intolerant EPT groups are collected and identified, and only EPT criteria are used to assign a bioclassification. The expected EPT taxa richness values are lower in small high quality mountain streams, <4 meters in width or with a drainage area <3.5 square miles. For these small mountain streams, an adjustment to the EPT taxa richness values is made prior to applying taxa richness criteria. Both EPT taxa richness and biotic index values also can be affected by seasonal changes. DWQ criteria for assigning bioclassification are based on summer sampling (June-September). For samples collected in other seasons, EPT taxa richness can be adjusted. The biotic index values can also be seasonally adjusted for samples collected outside the summer season. Criteria have been developed to assign bioclassifications ranging from Poor to Excellent to each benthic sample. These bioclassifications primarily reflect the influence of chemical pollutants. The major physical pollutant, sediment, is not assessed as well by a taxa richness analysis. A-II-2 Habitat Evaluation DWQ has developed a habitat assessment form to better evaluate the physical habitat of a stream. The habitat score has a potential range of 1-100, based on evaluation of channel modification, amount of instream habitat, type of bottom substrate, pool variety, bank stability, light penetration and riparian zone width. Higher numbers suggest better habitat quality, but no criteria have been developed for assigning ratings indicating Excellent, Good, Fair or Poor habitat. A-II-3 Table A-II-1 Benthic Macroinvertebrate Data Collected in the Broad River Basin, 1983-2000 (Current basinwide monitoring sites have name bolded.) Subbasin/Waterbody Location County Index No. Date ST EPT BI EPTBI BioClass 03-08-01 Broad R SR 2802 Henderson 9-(1) 7/10/00 99 49 4.10 3.26 Excellent 7/10/95 82 43 3.44 2.81 Excellent Broad R US 64/74 Rutherford 9-(22) 9/12/00 54 18 5.98 4.75 Not Rated 8/30/84 35 14 5.62 4.70 Fair Reedypatch Cr US 64 Rutherford 9-15 7/10/00 - 32 - 3.34 Good Cove Cr SR 1381 Rutherford 9-23-(9) 7/12/00 - 40 - 3.39 Excellent 7/10/95 - 37 - 3.06 Excellent Cove Cr US 64/74 Rutherford 9-23-(9) 7/26/89 77 33 4.20 3.64 Good 7/21/86 95 40 4.47 3.82 Good 03-08-02 Broad R SR 1181 Rutherford 9-(22) 7/12/00 81 31 4.78 3.40 Good 7/12/95 57 28 4.89 4.25 Good-Fair Mountain Cr SR 1149 Rutherford 9-25-(5) 8/17/00 53 19 4.96 4.09 Good-Fair 7/12/95 - 28 - 3.76 Good Broad R SR 1106 Rutherford 9-(25.5) 7/11/00 71 24 5.42 4.69 Good-Fair 7/12/95 52 23 4.84 3.79 Good-Fair Broad R US 221 Rutherford 9-(25.5) 7/19/00 79 32 4.89 3.97 Good 9/20/95 58 29 4.91 4.03 Good-Fair 7/25/89 56 22 5.31 4.67 Good-Fair 7/21/87 64 26 5.12 4.38 Good-Fair 7/22/86 70 27 5.40 4.32 Good-Fair 9/4/85 48 21 4.97 3.82 Good-Fair 8/30/84 66 29 4.58 3.76 Good-Fair 8/11/83 46 17 5.13 4.33 Fair Cleghorn Cr SR 1149 Rutherford 9-26 7/13/00 85 24 6.19 5.42 Good-Fair 7/12/95 49 17 5.30 4.96 Fair Green R SR 1331 Polk 9-29-(33) 10/28/93 69 29 5.28 4.32 Good-Fair Green R SR 1302 7/12/00 70 29 4.5 3.65 Good-Fair 7/11/95 52 27 4.48 4.03 Good-Fair 7/26/89 83 35 4.84 4.20 Good 7/21/87 74 33 4.83 4.15 Good Walnut Cr SR 1315 Polk 9-29-44 7/11/00 - 38 - 3.36 Excellent 7/11/95 - 14 - 3.92 Fair UT Whiteoak Cr Upstream WWTP Polk 9-29-46 5/15/95 84 38 4.81 4.14 Good-Fair UT Whiteoak Cr Downstream WWTP 5/15/95 69 35 5.51 4.44 Good-Fair UT Whiteoak Cr SR 1532 10/28/86 73 29 4.65 3.48 Good-Fair UT Whiteoak Cr SR 1519 10/28/86 51 8 6.69 2.86 Poor Whiteoak Cr SR 1531 Polk 9-29-46 10/29/86 76 27 5.25 4.12 Good-Fair Whiteoak Cr SR 1526 10/29/86 - 19 - 4.17 Good-Fair Whiteoak Cr SR 1352 7/11/00 96 40 4.72 3.96 Good 7/11/95 63 36 4.69 4.14 Good 5/15/95 84 38 4.84 3.47 Good 10/29/86 - 24 - 3.75 Good-Fair A-II-4 Subbasin/Waterbody Location County Index No. Date ST EPT BI EPTBI BioClass 03-08-02 (con’t) Second Broad R above Chip Mill Rutherford 9-41-(10.5) 5/19/99 82 47 4.31 3.70 Good Second Broad R below Chip Mill 5/19/99 84 44 4.09 3.59 Good Second Broad R SR 1538 8/16/00 64 26 4.71 3.73 Good-Fair 7/13/95 51 26 4.40 3.59 Good-Fair 6/28/94 68 33 4.57 3.92 Good Gap Br SR 1512 Rutherford 9-41-11-1 3/18/86 88 35 3.66 2.69 Good Second Broad R US 74 Bus Rutherford 9-41-(12.3) 6/28/94 71 30 5.18 4.09 Good-Fair Catheys Cr SR 1549 Rutherford 9-41-13-(6) 8/16/00 - 18 - 4.59 Fair 7/13/95 - 18 - 3.94 Fair 6/27/94 49 17 5.27 3.57 Good-Fair 3/23/88 - 15 - 3.98 Fair Hollands Cr SR 1547 Rutherford 9-41-13-7-(3) 3/23/88 63 27 5.23 4.31 Good-Fair Hollands Cr SR 1548 7/13/00 - 17 - 3.26 Fair 3/23/88 29 3 7.47 4.67 Poor Roberson Cr SR 1561 Rutherford 9-41-14 7/13/00 - 21 - 4.56 Good-Fair 7/13/95 - 26 - 4.16 Good-Fair Second Broad R US 221A Rutherford 9-41-(21.5) 6/28/94 65 23 5.58 4.41 Good-Fair Second Broad R SR 1973 9-41-(24.7) 7/19/00 83 29 5.80 4.69 Good-Fair 7/13/95 42 20 5.69 4.94 Good-Fair 7/8/91 59 25 5.41 4.56 Good-Fair 7/25/89 60 17 6.23 5.21 Fair 7/21/87 65 25 5.64 4.51 Good-Fair 9/4/85 44 15 5.99 4.77 Fair 8/11/83 26 9 7.88 4.45 Poor 03-08-03 Green R SR 1104 Henderson 9-29-(1) 10/27/93 103 51 3.60 2.48 Excellent Off SR 1106 Henderson 9-29-(1) 10/27/93 78 42 3.00 2.19 Excellent 1/18/89 87 42 3.67 2.54 Good 1/18/89 - 40 - 2.14 Good SR 1103 Henderson 9-29-(1) 10/27/93 93 38 4.04 2.89 Good Rock Cr SR 1106 Henderson 9-29-12 10/28/93 - 37 - 2.84 Excellent 1/19/89 - 32 - 2.71 Good Joe Cr SR 1106 Henderson 9-29-14 7/10/00 - 38 - 2.97 Excellent 1/19/89 - 28 - 2.92 Good Bobs Cr SR 1103 Henderson 9-29-15 1/19/89 - 35 - 2.68 Good Freeman Cr SR 1115 Henderson 9-29-18 1/18/89 - 20 - 3.36 Good-Fair Green R SR 1151 Henderson 9-29-(22) 7/11/00 71 29 4.46 3.54 Good-Fair 7/10/95 54 25 4.44 4.07 Good-Fair Hungry R SR 1799 Henderson 9-29-30 9/12/00 - 34 - 3.20 Good 7/10/00 - 34 - 2.74 Good 7/10/95 - 25 - 2.45 Good-Fair 03-08-04 Sandy Run Cr SR 1195 Cleveland 9-46 7/19/00 80 38 4.71 4.00 Good 7/11/95 61 28 5.16 4.36 Good-Fair First Broad R SR 1726 Cleveland 9-50-(1) 7/25/89 83 36 4.28 3.40 Good A-II-5 Subbasin/Waterbody Location County Index No. Date ST EPT BI EPTBI BioClass 03-08-04 (con’t) First Broad R SR 1530 Cleveland 9-50-(1) 7/17/00 110 47 4.49 3.67 Good 7/10/95 92 39 4.43 3.94 Good 10/28/93 - 35 - 3.57 Good 7/24/89 92 37 4.51 4.02 Good 7/27/88 96 42 4.51 3.79 Good 7/22/86 91 37 4.84 3.87 Good N Fk First Broad R SR 1728 Rutherford 9-50-4 7/17/00 - 36 - 3.56 Excellent 7/10/95 84 40 3.83 3.39 Excellent 7/24/89 - 35 - 3.21 Good Wards Cr SR 1525 Cleveland 9-50-12 7/17/00 - 33 - 4.17 Good Wards Cr SR 1533 Cleveland 9-50-12 7/24/89 - 21 - 4.82 Good-Fair Duncans Cr SR 1749 Rutherford 9-50-13 7/10/95 - 28 3.20 3.20 Good Hinton Cr NC 226 Cleveland 9-50-15 7/17/00 - 26 - 3.90 Good-Fair 7/10/95 - 22 - 3.51 Good-Fair First Broad R Off SR 1809 at SR 1856 Cleveland 9-5-(15.5) 7/18/00 83 32 4.73 3.96 Good SR 1809 Cleveland 7/11/95 74 31 4.79 3.86 Good Knob Cr SR 1004 Cleveland 9-50-19-(4) 7/17/00 - 30 - 3.94 Good 7/11/95 75 31 4.66 4.05 Good First Broad R SR 1140 Cleveland 9-50-(28) 7/20/00 70 23 5.37 4.11 Good 7/12/95 51 19 5.53 4.56 Good-Fair 7/25/89 73 23 5.75 4.57 Good-Fair 7/21/87 69 26 5.65 4.04 Good 9/5/85 44 12 6.79 5.28 Fair 8/11/83 57 21 5.95 4.67 Good-Fair Brushy Cr above SR 1323 Cleveland 9-50-29 5/16/95 72 34 5.33 4.60 Good Brushy Cr below SR 1323 Cleveland 9-50-29 5/16/95 80 32 5.17 4.50 Good Brushy Cr SR 1308 Cleveland 9-50-29 7/20/00 62 24 5.02 3.94 Good Brushy Cr US 74 Cleveland 9-50-29 9/4/85 49 13 6.66 5.64 Fair Brushy Cr below US 74 Cleveland 9-50-29 11/9/88 12 12 5.47 5.47 Fair Brushy Cr below US 74 Cleveland 9-50-29 11/9/88 - 11 - 5.31 Fair Hickory Cr SR 1110 Cleveland 9-50-30 2/9/87 - 11 - 5.30 Fair Hickory Cr NC 18 Cleveland 9-50-30 7/20/00 46 12 6.23 5.87 NR Hickory Cr below NC 18 Cleveland 9-50-30 2/9/87 - 3 - 6.13 Poor Beaverdam Cr NC 150 Cleveland 9-50-32 7/19/00 68 24 5.74 5.01 Good 7/11/95 57 20 5.87 5.09 Good-Fair 03-08-05 Buffalo Cr SR 1908 Cleveland 9-53-(1) 7/18/00 79 35 5.02 4.42 Excellent 7/11/95 67 29 5.28 4.71 Good Buffalo Cr US 74 Cleveland 9-53-(5) 9/13/90 54 11 6.80 4.97 Fair 11/14/83 43 7 7.32 6.07 Fair Buffalo Cr NC 198 Cleveland 9-53-(5) 7/20/00 75 27 5.25 4.57 Good 7/12/95 56 24 5.37 4.83 Good 7/27/88 80 14 6.65 5.85 Fair 8/6/84 55 18 6.07 5.25 Good-Fair 11/14/83 59 15 6.87 5.38 Fair A-II-6 Subbasin/Waterbody Location County Index No. Date ST EPT BI EPTBI BioClass 03-08-05 (con’t) Muddy Fk SR 2012 Cleveland 9-53-6 7/18/00 72 25 5.52 4.83 Good 7/13/95 74 23 5.69 5.21 Good 9/13/90 74 17 6.02 5.46 Good-Fair 11/14/83 75 18 6.16 4.58 Good-Fair Beason Cr SR 2252 Cleveland 9-53-8 3/17/86 68 19 6.02 4.55 Good-Fair Beason Cr SR 2246 Cleveland 9-53-8 7/18/00 - 15 - 5.11 Good-Fair 7/12/95 59 18 5.59 5.19 Good-Fair 6/10/87 69 17 6.11 5.42 Good-Fair Long Br Battlewood Rd York, SC 9-53-8-1 3/18/86 90 38 4.62 3.31 Excellent Lick Br SR 2227 Cleveland 9-53-11 7/20/00 68 24 5.47 4.70 Not Impaired 7/12/95 49 6 6.21 6.39 Not Rated 3/17/86 51 13 6.61 5.30 Not Rated 11/15/83 35 6 7.44 6.00 Not Rated Lick Br SR 2229 Cleveland 9-53-11 3/17/86 33 3 7.99 6.61 Poor Kings Cr SR 2286 Cleveland 9-54 7/21/00 72 24 5.72 4.83 Good 7/13/95 57 19 6.34 5.73 Good-Fair 03-08-06 N Pacolet R SR 1179 Polk 9-55-1-(1) 7/11/00 83 37 4.58 3.96 Good 7/11/95 68 31 4.33 3.67 Good N Pacolet R SR 1517 Polk 9-55-1-(10) 8/10/83 67 24 5.73 4.87 Good-Fair N Pacolet R SR 1501 Polk 9-55-1-(10) 7/11/00 96 33 5.49 4.47 Good-Fair 7/11/95 67 24 5.73 4.87 Good-Fair A-II-7 Table A-II-2 Fish Community Structure Data Collected in the Broad River Basin, 1994-2000 (Current basinwide sites are bolded.) Subbasin/Stream Location County Map # Index No. Date NCIBI Score NCIBI Rating 03-08-01 Flat Cr SR 2802 Buncombe 9-12 09/29/98 --- Not rated Cedar Cr SR 1371 Rutherford F-1 9-23-14 05/11/00 44 Good-Fair 03-08-02 Green R SR 1302 Polk 9-29-(33) 06/19/95 46 Good-Fair Walnut Cr SR 1315 Polk F-1 9-29-44 05/12/00 56 Excellent White Oak Cr SR 1526 Polk F-2 9-29-46 05/12/00 46 Good-Fair Second Broad R SR 1500 Rutherford F-3 9-41-(0.5) 05/11/00 52 Good Second Broad R SR 1538 Rutherford 9-41-(10.5) 06/20/94 56 Excellent Second Broad R US 74 Rutherford 9-41-(21.5) 06/20/94 50 Good Second Broad R US 221A Rutherford 9-41-(24.7) 06/20/94 50 Good Cane Cr SR 1558 Rutherford F-4 9-41-12-(5.5) 05/10/00 42 Good-Fair Catheys Cr SR 1549 Rutherford F-5 9-41-13-(6) 05/10/00 32 Poor 06/20/94 46 Good-Fair Roberson Cr SR 1561 Rutherford F-6 9-41-14 05/10/00 54 Excellent 03-08-04 Sandy Run SR 1332 Cleveland F-1 9-46 05/10/00 48 Good N Fk First Broad R SR 1728 Rutherford 9-50-4 06/07/99 58 Excellent 06/20/95 56 Excellent Brier Cr SR 1733 Rutherford 9-50-8 09/28/98 56 Excellent Wards Cr SR 1525 Cleveland F-2 9-50-12 05/09/00 54 Excellent Knob Cr SR 1641 Cleveland F-3 9-50-19-(2.5) 05/09/00 42 Good-Fair Brushy Cr SR 1342 Cleveland F-4 9-50-29 05/09/00 46 Good-Fair Hickory Cr NC 18 Cleveland F-5 9-50-30 05/08/00 50 Good Beaverdam Cr NC 150 Cleveland F-6 9-50-32 06/20/95 48 Good 05/08/00 50 Good 03-08-05 Buffalo Cr SR 1906 Cleveland F-1 9-53-(1) 05/09/00 46 Good-Fair Muddy Fk SR 1001 Cleveland F-2 9-53-6 05/08/00 48 Good 03-08-06 N Pacolet R SR 1501 Polk 9-55-1-(10) 06/19/95 48 Good