Fishing in Gwynedd, United Kingdom

What this local map set contains

The Gwynedd directory currently covers 35 lakes or reservoirs. No chart in this set currently has measured bathymetry; 35 charts are clearly labeled as modeled. Recorded maximum depths range from 10 to 192 ft, with a median of 52 ft. Those figures describe each chart's deepest recorded or modeled point, not a safe navigation depth.

Species records are attached to 35 of 35 waters. The most frequently cataloged targets are Brown Trout (35), European Perch (35), Northern Pike (35), Arctic Char (23) and Atlantic Salmon (1). These are coverage counts, not abundance estimates or catch forecasts; open the individual map to see the evidence and seasonal context attached to that water.

Three useful maps to compare first

1. Llyn Trawsfynydd: 118 ft maximum; modeled contours; 5 cataloged target species.
2. Llyn Padarn: 89 ft maximum; modeled contours; 5 cataloged target species.
3. Llyn Llydaw: 192 ft maximum; modeled contours; 4 cataloged target species.

Start with a survey-backed chart when exact contour shape matters most. Use a modeled chart as broad planning context, then verify depths on the water. Comparing the three examples above also shows whether this area offers one dominant basin type or genuinely different shallow, deep, lake and river options. Access is separate from map coverage: confirm launches, shore rights, closures and posted rules before making the trip.