Answer

Monarch Point Conservation Reserve* is under the supervision of the superintendent of Sandbanks Provincial Park. To reach a park warden call: 1-613-219-0462. You can contact the park at 1-613-393-3319. Find more information about Sandbanks here.**


Sources:

ontarioparks.com/parksblog/monarch-point/
** ontarioparks.com/park/sandbanks