Question

utilizing the graph provided, on which day is river discharge at it highest? penobscot river and bay river discharge salinity june 3rd june 7th june 9th june 11th

Explanation:

Step1: Locate highest point on graph

Find the peak of the blue - line (river discharge).

Step2: Identify corresponding date

The highest point of the blue - line corresponds to June 3rd.

Answer:

June 3rd