Is Metal Detecting allowed: YES if authorized by park supervisor.
Below is an excerpt from the State Park regulations found HERE.
NAC 407.103 Metal detector. Except as authorized by the supervisor of the park, no person may use a metal detector in the park.
FMDAC Disclaimer: FMDAC assumes no responsibility for any person who knowingly or accidentally violates any state park regulation. Although FMDAC will try to keep this information current we cannot anticipate how each regulation will be interpreted by a specific park department, park employee or other government employee. It is the sole responsibility of each individual to know and obey the regulations of the park or area they are visiting and or metal detecting.