Washington (State). Dept. of Ecology. Water Quality Planning.

• Dairy waste water quality management plan
• Dryland agriculture water quality management plan
• Dryland agriculture water quality management plan, appendix III, Section 208, P.L. 95-217
• Dryland agriculture water quality management plan, section 208, P.L. 95-217
• Evaluation of the quality of irrigation return flows in eastern Washington using the Imhoff cone
• Forest practice water quality management plan
• Washington State water quality standards