Water Quality Conditions Associated with Cattle Grazing and Recreation on National Forest Lands
Figure 5
Trends in overall mean fecal indicator bacteria concentrations across sample sites during the June through November 2011sample period on 12 U.S. Forest Service grazing allotments in northern California enrolled in this cross-sectional longitudinal study.
There were no significant relationships between allotment cattle stocking density and mean allotment concentrations of (A) E. coli (P>0.9) and (B) fecal coliform (P>0.3). During the study period, there were also no significant relationships between 2010–2011 water year precipitation and mean allotment concentrations of (C) E. coli (P>0.6) and (D) fecal coliform (P>0.5).