Final answer:
To estimate the elevation of the pond, you would need to read the contour lines around it and calculate based on the nearest labeled contour line and the contour interval of 40 feet.
Step-by-step explanation:
To determine the elevation of the pond near the center of the map with a contour interval of 40 feet, you need to identify the contour lines surrounding the pond. Once the nearest contour line is located, you can add or subtract the contour interval until you reach the elevation where the pond is situated. Without the specific contour lines present for the pond in the question, it would be impossible to give an accurate elevation. However, for answering questions like this, read the contour lines near the pond and use the contour interval to estimate the elevation by identifying if the pond is situated on a higher or lower elevation than the closest labeled contour line.