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lakeshorewallFreshwaterUnverified

NBM Dive Site Resource

Vierwaldstättersee — Lopper Acheregg

Hergiswil, Nidwalden, Switzerland

UNVERIFIED — Vierwaldstättersee — Lopper Acheregg is an exact named Swiss freshwater dive site supported by current registry and independent operator/club evidence. The rounded coordinate is a display-only locality marker, not an entry, exit, launch, mooring, wreck position, wall feature, cave entrance or navigation waypoint. Re-check access, closures, navigation rules, weather, lake level, depth and local-operator advice; this is desk research, not field verification.

Save this dive site to your free member profile.

Historic Picture Placeholder

Old-fashioned maritime line drawing reserved for a future historic photograph
Historic Picture PlaceholderHistoric photograph pending research and rights review
WaterFreshwater
AccessShore/bridge-side access; verify safe legal parking, entry/exit and local navigation rules.
ExperienceAdvanced cold-water wall divers
Maximum depthDeep wall route; set a certified team limit
Best seasonYear-round only in safe weather and road conditions.
VisibilityVariable alpine-lake visibility; runoff, plankton, silt, depth and seasonal turnover can change conditions rapidly.

Aquatic life at this dive site

What divers may encounter

Three reviewed connections are featured here. Sightings vary by season, conditions, and chance, so they are never guaranteed.

Profile connection reserved

Aquatic life research in progress

NBM is reviewing a likely local species for this position.

Profile connection reserved

Aquatic life research in progress

NBM is reviewing a likely local species for this position.

Profile connection reserved

Aquatic life research in progress

NBM is reviewing a likely local species for this position.

Site media

Photographs

Three views rotate from the published gallery on each visit.
Illustrated scuba diver reserved for a future dive-site photograph
Dive Photograph PlaceholderDive-site photograph pending
Illustrated scuba diver reserved for a future dive-site photograph
Dive Photograph PlaceholderDive-site photograph pending
Illustrated scuba diver reserved for a future dive-site photograph
Dive Photograph PlaceholderDive-site photograph pending

Contributor media

Dive videos

Three featured video positions are reserved on every profile.
Dive-site video pending
Dive-site video pending
Dive-site video pending

Published reference location

Location map

The marker shows the public coordinates associated with this profile. Confirm current access, moorings, and departure details before the dive.
Published reference coordinates46.98200, 8.31300
Open in Google Maps ↗
Map zoom level 6 of 11

Map data © OpenStreetMap contributors

Recent field observations

Diver-reported temperatures

Automatically checked observations from dives during the past 14 days. Three reports are visible at a time; scroll for more.
Automatically checked
No recent diver reports from the past 14 days

A report that passes the automatic checks will appear here with the dive date, diver’s display name, and temperatures at each depth.

Reports are automatically checked for plausible dates, depths, and temperatures. They are observations, not forecasts; confirm conditions before diving.

Diver field observation

Report temperatures

Reports publish automatically when the date, depths, and temperatures pass the checks. You must be signed in to submit.

Depth readings

Why divers know this place

Highlights

Steep Lopper wall terrain.

Before you arrive

Access notes

Shore/bridge-side access; verify safe legal parking, entry/exit and local navigation rules. Confirm the exact permitted entry/exit and emergency plan locally; the rounded marker is not for navigation.

Plan within your training

Conditions and hazards

Road traffic, difficult entry/exit, depth, decompression, cold and silt.

At the site

Facilities and support

Minimal roadside facilities; verify fills, oxygen and surface support.

Independent resource notice

This record is a starting point for independent verification. Access, closures, moorings, weather, currents, depth, visibility, operator availability, and site conditions can change without notice. Confirm current information with the responsible operator, property owner, managing authority, or another qualified local source before planning or attempting a dive.