minamiyamanashi.com · Official Tourism
Official regional tourism page citing Lake Motosu's high transparency and diving/snorkeling appeal.
Dive Spot Guide•
Motosuko Lake
High-altitude freshwater dive at Mount Fuji with sunken trees.
Shore-entry lake dive for altitude procedures, calm water, and submerged-forest scenery; the main draw is the eerie tree landscape.
About Motosuko Lake
Lake Motosu is a high-altitude freshwater dive at the foot of Mount Fuji, best known for clear water, shore entries, and the submerged forest around the Haunted Mansion area. Divers come for sunken trees, volcanic lakebed scenery, and a quiet lake setting rather than reef life, with altitude procedures and cool water part of the plan.
•
Research Estimate At Motosuko Lake
Conservative baseline from public research. No community dives logged yet.
VisibilityVisibility: 12.7m
AccessSimple entry
Aquatic LifeAverage variety
FacilitiesGood facilities
Crowd / PopularityQuite busy
CurrentNo current
SurgeFlat calm
Where Is Motosuko Lake?
This spotNearby spotsExplore nearby spots on the map
Community sourced coordinates.
Motosuko Lake Planning Details
Depth range, seasonality, and planning context.
Reported Depth
5m - 122m
Depth Note
Recreational dive areas are typically listed around 5-20 m, while the lake itself reaches 122 m; altitude-diving procedures apply.
Best Season
Spring to fall, especially summer and early autumn.
Typical Conditions
Quiet freshwater with strong transparency, a cool thermocline, and volcanic lakebed scenery with sunken trees.
Safety & Access At Motosuko Lake
Site conditions, restrictions, and access requirements.
Site Conditions
Cold waterEntanglement risk
Safety Notes
Use altitude-diving procedures, expect cold water below the thermocline, and watch buoyancy around submerged trees and fishing lines.
Access Restrictions
Shore-entry sites around the lake; altitude-diving procedures apply.
Legal Notes
Motorized boats are restricted on Lake Motosu.
Local Intel For Motosuko Lake
Community notes to help plan your visit.
Scuba Diving
Altitude diving procedures are used because the lake is around 900 m above sea level.
Freediving
Possible in calm, shallow areas, but the altitude and cold water make scuba the more practical choice.
Snorkeling
Snorkeling can work in the clearest calm shoreline sections, though the submerged forest is the main attraction for divers.
Wildlife at Motosuko Lake
Species commonly reported at this site, with direct links into their wildlife guides.
Recent Logged Visits At Motosuko Lake
Community dive logs and visit reports for this site.
Dive Spot Log Averages At Motosuko Lake
Average conditions based on logged dives & visits.
Conditions
Avg. Visibility12.7m
Activity
No dive activity logged yet.
