CI | Energy Glossary

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CI

1. n. []

The value of the separation between two adjacent contours. A net pay isopach map might have a contour interval of 10 ft [3 m], whereas a structure contour map might have a contour interval of 1,000 ft [300 m]. Contour intervals are chosen according to the map scale and the amount and distribution of control points.

Alternate Form: contour interval