Bertha Lake in Improvement District No. 4: How and When to Fish It

• Overview

  Bertha Lake stands in Improvement District No. 4, Alberta. Mixed forest runs right down to the water. Surface area is around 31 hectares, which gives you real water without needing a boat. There is roughly 3.9 km of shoreline here, which is a short walk end to end. Cardston sits 50 km from here and is the nearest stop. After that come Pincher Creek at 51 km and Blairmore at 73 km. It sits well inside its county, with no border complications.

• Where to Fish on Bertha Lake

  No chart reached our records; the first cast is your sounding. The shallow end warms first and pulls fish in ahead of the rest. A soft bed grows weed late into autumn, which keeps fish shallow. Open biodiversity records for Improvement District No. 4 list brook trout, rainbow trout, mountain whitefish and cutthroat trout. Take it as the county picture rather than a promise for this water. At Bertha Lake light and wind decide more than tackle does.

• Seasonal Patterns

  Seasonal averages run from -9°C in January up to 13°C in August. Cold locks it up for a good stretch each year. The lid arrives early and lasts until roughly early May. Break-up near early May, freeze-up near mid November: that is the shape of an average year. The shoulder weeks of the open season are the productive ones. On Bertha Lake that shapes the whole year.

• Tackle & Baits

  No access rule appears in what we hold. It formed naturally, so levels move with rainfall rather than with a gate. Overnight stays are possible 810 m away. Facilities include toilets around 820 m from here. Trout here take small spinners, spoons and, where fly water allows, a nymph or dry. Local rules can differ across the county line, so check where you stand. Fishing rules and camping rules are set separately here. For a change of water, Alderson Lake is 2.6 km distant. Ask locally about Bertha Lake if anything is unclear.