| Lake Lanier Water Quality Trend Monitoring | ||||||||
| 1st Quarter (Jul-Sep) Means | ||||||||
| Field Measurements | ||||||||
| Air | Water | Conduct. | Cond @25°C | |||||
| Station | Name | Temp °C | Temp °C | pH | micromhos/cm | micromhos/cm | D.O. mg/l | |
| 1 | Balus Cr. | 30 | 21 | 7.54 | 91 | 98 | 9.5 | |
| 2 | Flat Cr. | 30 | 25 | 7.51 | 788 | 786 | 8.1 | |
| 3 | Limestone Cr. | 29 | 26 | 7.47 | 84 | 84 | 8.4 | |
| 4 | Chatt. R. | 28 | 25 | 7.22 | 43 | 42 | 8.3 | |
| 5 | Little R. | 27 | 21 | 7.43 | 55 | 58 | 9.0 | |
| 6 | Wahoo Cr. | 25 | 20 | 7.36 | 52 | 57 | 9.1 | |
| 7 | Squirrel Cr. | 25 | 27 | 8.18 | 52 | 50 | 8.7 | |
| 8 | Chestatee R. | 26 | 23 | 7.48 | 35 | 36 | 8.7 | |
| 9 | Six Mile Cr. | 30 | 21 | 7.25 | 198 | 213 | 9.1 | |
| 10 | Buford Dam Splwy | 31 | 12 | 6.75 | 30 | 39 | 6.9 | |
| 11 | Bolling Bridge | 31 | 28 | 7.73 | 41 | 38 | 8 | |
| Lab Measurements | ||||||||
| Fecal col‡ | BOD5 | TSS | Hardness | Alkalinity | COD | |||
| Station | Name | cfb/100ml | mg/l | mg/l | Turb NTU | mg/l CaCO3 | mg/l CaCO3 | mg/l |
| 1 | Balus Cr. | 445 | 1.2 | 1.9 | 5.0 | 50 | 37 | 8.2 |
| 2 | Flat Cr. | 3861 | 1.7 | 3.6 | 3.3 | 173 | 49 | 16.5 |
| 3 | Limestone Cr. | 356 | 2.0 | 10.3 | 12.2 | 44 | 33 | 9.7 |
| 4 | Chatt. R. | 139 | 0.9 | 11.0 | 10.5 | 27 | 13 | 9.7 |
| 5 | Little R. | 467 | 1.0 | 4.7 | 6.3 | 31 | 19 | 9.9 |
| 6 | Wahoo Cr. | 800 | 1.0 | 7.3 | 9.8 | 31 | 24 | 10.0 |
| 7 | Squirrel Cr. | 68 | 1.6 | 13.5 | 6.9 | 28 | 20 | 10.3 |
| 8 | Chestatee R. | 214 | 1.1 | 11.2 | 11.5 | 26 | 14 | 7.8 |
| 9 | Six Mile Cr. | 1462 | 1.3 | 3.1 | 4.2 | 61 | 14 | 7.3 |
| 10 | Buford Dam Splwy | 3 | 1.0 | 1.0 | 2.1 | 26 | 14 | 4.8 |
| 11 | Bolling Bridge | 7 | 1.3 | 2.1 | 2.3 | 24 | 14 | 8.6 |
| ‡Geometric mean with 0 values treated as 1 | ||||||||
| NO2+NO3 | NH4 | Tot N | Tot P | |||||
| Station | Name | mg/l | mg/l | mg/l | mg/l | |||
| 1 | Balus Cr. | 1.0134 | 0.0175 | 1.8369 | 0.0105 | |||
| 2 | Flat Cr. | 11.1127 | 0.0714 | 17.2420 | 0.5027 | |||
| 3 | Limestone Cr. | 0.1766 | 0.0346 | 0.7171 | 0.0282 | |||
| 4 | Chatt. R. | 0.4431 | 0.0472 | 1.0808 | 0.0407 | |||
| 5 | Little R. | 1.1357 | 0.0302 | 2.0274 | 0.0595 | |||
| 6 | Wahoo Cr. | 0.5005 | 0.0290 | 1.1818 | 0.0544 | |||
| 7 | Squirrel Cr. | 0.0069 | 0.0243 | 0.5046 | 0.0317 | |||
| 8 | Chestatee R. | 0.3180 | 0.0260 | 0.8551 | 0.0467 | |||
| 9 | Six Mile Cr. | 9.5987 | 0.0464 | 16.8696 | 0.0288 | |||
| 10 | Buford Dam Splwy | 0.4402 | 0.0415 | 0.9420 | 0.0181 | |||
| 11 | Bolling Bridge | 0.0580 | 0.0140 | 0.4590 | 0.0681 |