Water quality: similar results to 04 but much stronger data set (continuous data at 3 sites from March to Oct):

• Water quality: similar results to 04 but much stronger data set (continuous data at 3 sites from March to Oct):

  • Very poor DO at Kiona (down to 3 mg/L near dawn on a few days);
  • Severe pH at Zillah and Kiona (> 9.5);
  • Least impaired reach was Mabton;
  • Generally low turbidity. Light generally not limiting plant growth.

• Differences in plant biomass did not seem to correspond to differences in DO & pH conditions.

• At end of 2005, my biggest concern: had improved water clarity due to improved irrigation practices irreparably harmed the river? Was excessive water star grass here to stay?

Notes: