[CURVES]

Purpose:

Defines data curves and their X,Y points.

Format:

One line for each X,Y point on each curve containing:

• Curve ID label
• an X value
• a Y value

Remarks:

1. Curves can be used to represent the following relations:
   • Head v. Flow for pumps
   • Efficiency v. Flow for pumps
   • Volume v. Depth for tanks
   • Head Loss v. Flow for General Purpose Valves
2. The points of a curve must be entered in order of increasing X-values (lower to higher).
3. If the input file will be used with the Windows version of EPANET, then adding a comment which contains the curve type and description, separated by a colon, directly above the first entry for a curve will ensure that these items appear correctly in EPANET's Curve Editor. Curve types include PUMP, EFFICIENCY, VOLUME, and HEADLOSS. See the examples below.

Example:

[CURVES]
;ID   Flow    Head
;PUMP: Curve for Pump 1
C1    0       200
C1    1000    100
C1    3000    0
 
;ID   Flow    Effic.
;EFFICIENCY:
E1    200     50
E1    1000    85
E1    2000    75
E1    3000    65