020-6 Wyo. Code R. § 6-3
The State of Wyoming shall cooperate with the other states of the Colorado River Basin and the government of the United States to maintain salinity levels in the main stem of the Colorado River at or below the following:
| Salinity in mg/l of Location | total dissolved solids |
| Below Hoover Dam | 723 |
| Below Parker Dam | 747 |
| Imperial Dam | 879 |
The above are flow-weighted average annual values and temporary increases above these values are allowed provided that with completion of salinty control projects, salinity concentrations would return to or below criteria level. These increases above the numeric criteria are provided for inorder to allow development projects to be completed before control measures are brought on line, and to allow for unfavorable reservoir conditions or periods of below normal annual river flows.
020-6 Wyo. Code R. § 6-3