On Sunday, the county handed over all operations to the Merced Irrigation District.
MID already owns most of the parkland but the county had been handling day-to-day upkeep until this point.
Some of the noticeable changes include new porta-potties at the old lake day-use area.
There's also been an increase in entrance fees.
Starting Tuesday, the cost of a day-use pass will increase by $4, from $6 to $10.
The price for an annual pass will remain $50.