| Ohio River at TMC, Water Hardness, July 16, 2002 | ||||||
| Total | Ca Hardness | Mg Hardness | Latitude | Longitude | ||
| Hardness | ||||||
| ppm | ppm | ppm | ||||
| Upstream | 144.5 | 90.0 | 54.5 | N38 97.161 | W84 29.864 | |
| at TMC | ||||||
| Tributary | 240.0 | 190.0 | 50.0 | N38 96.040 | W84 29.599 | |
| 12 Mile Creek | ||||||
| Downstream | 147.5 | 99.5 | 98.0 | |||
| from 12 Mile Cr. | ||||||