End Section

Flared attachment on inlet and outlet of a culvert to prevent erosion of the roadbed improve hydraulic efficiency, and improve appearance.

Endurance Limit

The maximum stress that a material can withstand for an infinitely large number of fatigue cycles (See Fatigue StrengthThe stress to which a material can be subjected for a specified number of fatigue cycles.).

Energy Gradient

Slope of a line joining the elevations of the energy head of a stream.

Energy Head

The elevation of the hydraulic gradient at any section, plus the velocity head.

Engineer

The person, firm or corporation named as such in the contract documents; the “EngineerThe person, firm or corporation named as such in the contract documents; the "Engineer of Record". of Record”.