The west branch usually has slightly higher levels than the main branch due to more mine acid draingae and culm bank runoff. Beginning flow flushes excessive amounts into the river and then the remaining runoff flow acts as diluting agent. The main branch usually has levels slightly higher than the west branch, probable cause is the rock type it runs over. Beginning flow flushes excessive amounts into the river and then the remaining runoff flow acts as diluting agent. Phosphate levels are also up at these 2 sites.
Probable cause is septic systems leaking into the river during low flow.
There are more Class I and Class II organisms showing up each season. As you head upstream, quality diminishes as seen in the increased amounts of Class III organisms or complete absence of organisms. The west branch is slightly worse than the main branch. Total Macro-invertebrates More organisms are found in the summer and fall. Warmer water causes more activity and reproduction than in cold water.