A family of three was rescued after being trapped by a flood near Tanque Verde Falls on Tuesday night.
The Pima County Sheriffs Department says those rescues come at a cost.
Local agencies spend money on each rescue they have to perform - from operating helicopters to paying the personnel for their time.
PCSD broke down the cost for the flash flood rescue that stranded 17 people at Tanque Verde Falls a few weeks ago.
They say the helicopter cost was about $570/hr to fly and flew for nearly three hours - costing a total of $1,600.
The department also pays more than $2,000 in wages and deputy expenses.
Taxpayers do foot the bill for rescues but PCSD urge hikers to use caution if you're enjoying the outdoors during monsoon.
Officials recommend hikers go early in the morning because flash floods usually occur later in the day.
If you are caught in a flood, always call 911 for help.