This is going to be assuming a whole lot of variables since I don't know the exact specs of the fountain, but here goes:
Fountain has 112 total nozzles (source). By observation, there are (26) 1" Finger Jet Nozzles, (26) 1.5" Geyser Nozzles, (6) 2" Geyser Nozzles, and (54) 1" Geyser Nozzles. Assuming Heights of 10 feet for the Finger Jets and 1.5" Geysers, 15 feet for the 1" Geysers, and 25 feet for the 2" Geysers.
Nozzle
Quantity
Aperture Size (in)
Height (ft)
Exit Velocity (ft/s)
Flow Rate (each, gpm)
Flow Rate (total, gpm)
1" Finger
26
1
10
25.38
62.1
1615.1
1" Geyser
54
1
15
31.08
76.1
4108.3
1.5" Geyser
26
1.5
10
25.38
139.8
3634.0
2" Geyser
6
2
25
40.12
392.9
2357.2
Total: 11714.6
To size the pumps, I assumed a head of 150ft for each run. Total guesstimate, but it would be far too complicated to do any actual calculations to determine this, especially since the pipe runs to each nozzle are going to be in the 3-4" range to get the flow rates needed for the height.
HP
Amps (@480/3Ø)
VA
Basis of
Design
Pump 1 GPM
1615.1
100.0
124
103092
Grundfos
NBS 040-095/7.72
Pump 2 GPM
2054.152
121.0
156
129696
Grundfos
NBS 050-150/14.09
Pump 3 GPM
2054.152
121.0
156
129696
Grundfos
NBS 050-150/14.09
Pump 4 GPM
1816.975
100.0
124
103092
Grundfos
NBS 040-095/7.72
Pump 5 GPM
1816.975
100.0
124
103092
Grundfos
NBS 040-095/7.72
Pump 6 GPM
1178.622
75.0
96
79813
Grundfos
NBS 030-095/7.36
Pump 7 GPM
1178.622
75.0
96
79813
Grundfos
NBS 030-095/7.36
Total Power:
728293
VA
728
kVA
Cost Per Hour:
$35.32
So there you go- $35.32 an hour assuming a 50% demand factor on the pumps (those fountains aren't at full spray all the time).
As far as water loss, on a typical summer day the evaporative losses come out to be about 2,400 gallons per hour. That is about $10/hr using the GCWW rates.