Two people were rescued by the fire service during a large gathering at Shadwell Quarry near Much Wenlock earlier.
Emergency services including the Air Ambulance were sent to the "blue lagoon" at Shadwell Quarry where more than 60 people were reported to have congregated on Bank Holiday Monday.
Shropshire Fire and Rescue Service spokesman said: "At 16:23 SFRS Fire Control received a call reporting an incident classified as Water Rescue in Much Wenlock .
"Three fire appliances including the Incident Command Unit were mobilised from Shrewsbury, Telford Central and Tweedale. An Operations officer was in attendance.
"Two casualties were assisted from steep quarry banks to waiting ambulance crews ambulance crews.
"The stop message was received at 4.52pm."
A West Mercia Police spokesman said: "At 4.20pm this afternoon police were informed a 19-year-old man was stuck after jumping into the blue lagoon quarry in Much Wenlock.
"Police attended along with the fire and ambulance services, including the air ambulance.
"He was subsequently brought to safety and treated by paramedics for a suspected head injury."