I am creating three maps on one poster. Each map depicts the same nine sample points along the same 26 mile reach of a creek. Each map is symbolized for one of the collected parameters, pH, temperature, and DO. Right now I have symbolized the reach between each point using the same color as the upstream sampling point. The color remains the same until the lower sampling point.
Is there a way to show change in color, a color ramp of sorts, between the two sample point. The change in color would need start the same as the up stream sample point and finish the same as the down stream point.