Fig. 5. Vertical profiles of ground water NO3–N concentrations, fall 1991–1996, with regression line for NO3–N concentration vs. depth below land surface in the mixing zone and 1993 ground water ages.
Fig. 5. Vertical profiles of ground water NO3–N concentrations, fall 1991–1996, with regression line for NO3–N concentration vs. depth below land surface in the mixing zone and 1993 ground water ages.