Parameters Description Upper Bound Lower Bound Final Value
Umax (mm) Maximum water content in surface storage* 5 35 5.01
Lmax (mm) Maximum water content in root zone storage 50 350 51.2
CQOF (-) Overland flow runoff coefficient  0 1 0.127
CKIF (hr) Time constant for routing interflow  500 1000 780.6
CK1,2 (hr) Time constant for routing overland flow 3 80 79.9
TOF (-) Root zone threshold value for overland flow 0 0.99 0.90
TIF (-) Root zone threshold value for interflow 0 0.99 0.00015
TG (-) Root zone threshold value for GW recharge 0 0.99 0.412
CKBF (hr)
Cqlow (-)
Cklow (hr)
Time constant for routing base flow
Lower base flow/recharge to lower reservoir
Time constant for routing lower base flow
500
0
1000
6000
100
30000
5951
62.7
18108
*See DHI [28] for details
Table 1: NAM parameters determined during calibration of Sarisoo catchment.