| Lake Lanier Water Quality Trend Monitoring | ||||||||
| Station 11 - Bolling Bridge | ||||||||
| Field Measurements | ||||||||
| Air | Water | Conduct. | Cond @25°C | |||||
| Sample Date | Time | Temp °C | Temp °C | pH | micromhos/cm | micromhos/cm | D.O. mg/l | |
| 07/14/99 | 1410 | 29 | 27 | 8.37 | 41 | 39 | 8.7 | |
| 07/28/99 | 1100 | 31 | 30 | 7.97 | 43 | 38 | 8.4 | |
| 08/08/99 | 1135 | 33 | 29 | 7.93 | 43 | 39 | 8.6 | |
| 08/19/99 | 1600 | 36 | 31 | 7.73 | 41 | 35 | 8.5 | |
| 09/06/99 | 1105 | 30 | 28 | 7.17 | 41 | 38 | 8.4 | |
| 09/25/99 | 1405 | 29 | 24 | 7.20 | 39 | 38 | 7.7 | |
| 10/14/99 | 1605 | 27 | 22 | 7.38 | 42 | 43 | 7.4 | |
| 10/31/99 | 1124 | 24 | 20 | 7.38 | 34 | 38 | 8.2 | |
| 11/11/99 | 1146 | 23 | 18 | 7.60 | 40 | 44 | 8.8 | |
| 11/28/99 | 1458 | 20 | 16 | 7.59 | 32 | 38 | 10.1 | |
| 12/15/99 | 1622 | 16 | 13 | 7.10 | 30 | 37 | 10.4 | |
| 12/26/99 | 1440 | 11 | 11 | 7.62 | 28 | 38 | 9.5 | |
| 01/15/00 | 1603 | 11 | 10 | 7.15 | 28 | 38 | 10.2 | |
| 01/27/00 | 1440 | 5 | 8 | 7.60 | 26 | 39 | 10.6 | |
| 02/13/00 | 1530 | 5 | 8 | 7.70 | 26 | 38 | 12.1 | |
| 02/24/00 | 1242 | 15 | 10 | 7.50 | 28 | 40 | 11.4 | |
| 03/09/00 | 1142 | 23 | 15 | 7.61 | 32 | 39 | 11.3 | |
| 03/27/00 | 1048 | 15 | 16 | 7.41 | 31 | 37 | 10.2 | |
| 04/11/00 | 1530 | 22 | 16 | 7.68 | 32 | 38 | 10.0 | |
| 04/27/00 | 1705 | 25 | 18 | 7.30 | 31 | 35 | 9.6 | |
| 05/12/00 | 1228 | 28 | 25 | 7.16 | 39 | 39 | 9.0 | |
| 05/18/00 | **** 1240 | 26 | 24 | 7.94 | 40 | 40 | 9.1 | |
| 06/01/00 | 1358 | 32 | 26 | 7.76 | 40 | 39 | 8.6 | |
| 06/16/00 | 1206 | 32 | 29 | 7.72 | 46 | 43 | 7.8 | |
| Station 11 - Bolling Bridge | Lab Measurements | |||||||
| Fecal col. | BOD5 | TSS | Hardness | Alkalinity | COD | |||
| Sample Date | cfb/100ml | mg/l | mg/l | Turb NTU | mg/l CaCO3 | mg/l CaCO3 | mg/l | |
| 07/14/99 | 40 | 2.0 | 2.0 | 2.8 | 12 | 14 | 6.9 | |
| 07/28/99 | 0 | 2.2 | 1.2 | 2.4 | 24 | 14 | 9.7 | |
| 08/08/99 | 50 | 0.6 | 2.6 | 2.3 | 24 | 13 | 7.7 | |
| 08/19/99 | 80 | 0.7 | 2.2 | 2.1 | 24 | 14 | 3.8 | |
| 09/06/99 | 0 | 1.4 | 2.0 | 2.5 | 30 | 15 | 16.8 | |
| 09/25/99 | 0 | 0.9 | 2.8 | 1.8 | 32 | 13 | 6.7 | |
| 10/14/99 | 20 | 0.5 | 1.6 | 3.0 | 36 | 15 | 6.7 | |
| 10/31/99 | 0 | 1.0 | 3.0 | 3.3 | 32 | 14 | 0.0 | |
| 11/11/99 | 10 | 1.3 | 3.2 | 2.6 | 34 | 14 | 2.0 | |
| 11/28/99 | 10 | 1.0 | 1.8 | 1.0 | 42 | 15 | 9.9 | |
| 12/15/99 | 0 | 1.8 | 2.8 | 1.6 | 42 | 15 | 6.2 | |
| 12/26/99 | 0 | 1.3 | 1.6 | 1.9 | 40 | 15 | 11.9 | |
| 01/15/00 | 0 | 0.8 | 1.6 | 1.6 | 30 | 14 | 2.1 | |
| 01/27/00 | 0 | 0.3 | 1.8 | 2.3 | 32 | 14 | 4.1 | |
| 02/13/00 | 0 | 1.2 | 1.4 | 1.6 | 28 | 14 | 6.2 | |
| 02/24/00 | 0 | 0.1 | 1.6 | 2.1 | 30 | 14 | 6.2 | |
| 03/09/00 | 0 | 1.1 | 1.4 | 2.2 | 32 | 12 | 7.9 | |
| 03/27/00 | 0 | 1.7 | 2.4 | 3.6 | 32 | 13 | 3.9 | |
| 04/11/00 | 0 | 1.6 | 2.8 | 3.0 | 28 | 13 | 5.9 | |
| 04/27/00 | 0 | 0.8 | 2.4 | 2.9 | 26 | 10 | 2.0 | |
| 05/12/00 | 0 | 1.4 | 1.8 | 2.1 | 28 | 13 | 3.5 | |
| 05/18/00 | 0 | 1.2 | 2.4 | 2.4 | 30 | 15 | 7.1 | |
| 06/01/00 | 0 | 0.9 | 2.4 | 2.5 | 34 | 13 | 3.5 | |
| 06/16/00 | 0 | 1.4 | 1.4 | 2.6 | 28 | 13 | 0.0 | |
| NO2+NO3 | NH4 | Tot N | Tot P | |||||
| Sample Date | mg/l | mg/l | mg/l | mg/l | ||||
| 07/14/99 | 0.1159 | 0.0125 | 0.5939 | 0.0098 | ||||
| 08/08/99 | 0.0543 | 0.0180 | 0.4385 | 0.1817 | ||||
| 09/06/99 | 0.0037 | 0.0115 | 0.3447 | 0.0128 | ||||
| 10/14/99 | 0.0215 | 0.0367 | 0.4596 | 0.0245 | ||||
| 11/11/99 | 0.0541 | 0.0198 | 0.3034 | 0.0176 | ||||
| 12/15/99 | 0.0918 | 0.0580 | 0.4866 | 0.0358 | ||||
| 01/15/00 | 0.1235 | 0.0570 | 0.4207 | 0.0198 | ||||
| 02/13/00 | 0.1663 | 0.0583 | 0.3924 | 0.0123 | ||||
| 03/09/00 | 0.1898 | 0.0265 | 0.4088 | 0.0114 | ||||
| 04/11/00 | 0.2219 | 0.0258 | 0.4652 | 0.0186 | ||||
| 05/12/00 | 0.2034 | 0.0159 | 0.4494 | 0.0148 | ||||
| 06/01/00 | 0.2068 | 0.0075 | 0.3117 | 0.0114 |