Water body | Comparison | t | df | p-value | p-value corrected |
Namakan Reservoir | NATURAL vs 1970RC | −1.267 | 60 | 0.210 | 0.630 |
| NATURAL vs 2000RC | −9.369 | 60 | <0.001 | <0.001 |
| 1970RC vs 2000RC | −12.800 | 60 | <0.001 | <0.001 |
Rainy Lake | NATURAL vs 1970RC | −9.488 | 60 | <0.001 | <0.001 |
| NATURAL vs 2000RC | −9.556 | 60 | <0.001 | <0.001 |
| 1970RC vs 2000RC | −1.449 | 60 | 0.153 | 0.458 |