| Gilbert Bay (South Arm) | Gunnison Bay (North Arm) | |
| Color | Blue-green | Rose-purple blue |
| Height (feet) October 15, 1998 | 4202.4 | 4201.40 |
| Surface Density (kg/liter) | 1.057 | 1.193 |
| Density Near Bottom | 1.064 | 1.205 |
| Surface Salinity (mass salt/total mass) | 8.4% | 22.5% |
| Sodium (g/liter) | 27.9 | 87.6 |
| Magnesium (g/liter) | 3.1 | 8.3 |
| Potassium (g/liter) | 1.9 | 4.1 |
| Calcium (g/liter) | .2 | .3 |
| Chloride (g/liter) | 49.4 | 151.3 |
| Sulfate (g/liter) | 5.6 | 17.2 |