OWA-EPANET Toolkit  2.2


Defines data curves and their X,Y points.


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

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


  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.


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