Boulder Lake Reservoir, Minnesota: Fishing Spots and Seasons

• Overview

  Set in Saint Louis County, Boulder Lake Reservoir is a Minnesota water. Elevation runs to 1,378 feet. Around 5.1 sq miles of open water: conditions change from one end to the other. At about 26 miles of edge, most people fish a single area and learn it well. Few waters listed in Saint Louis County are bigger. Arnold is the closest place, 13 miles off. It is 153 miles to Saint Paul, the nearest city. It lies deep inside the county rather than near an edge.

• Where to Fish on Boulder Lake Reservoir

  Recorded soundings reach about 17 feet at the deepest point. Look for where the old bank line still shows under the surface. Built water gives depth close in, which suits a bank angler. Survey and observation records for Saint Louis County include yellow perch, northern pike, white sucker and rainbow trout. Species recorded across the county may be limited to a few waters. On Boulder Lake Reservoir the quiet end is the one worth the extra effort.

• Seasonal Patterns

  Average temperature peaks around 66°F in July and bottoms out near 6°F in January. Hard water is a season in its own right here. The freeze runs deep into the year, with break-up near late April. The open-water window runs from around late April to about late November in an average year. The shoulder weeks of the open season are the productive ones. Boulder Lake Reservoir runs to that rhythm year in and year out.

• Tackle & Baits

  Access is not recorded for this water. Nothing is mapped in the way of a ramp or car park within a short radius. For the bass here, soft plastics worked slow along cover and a spinnerbait for searching do most of the work. Where a permit is needed, the nearest town usually sells it. Rules for boats are stricter than rules for the bank in many places. Should this one be busy, Island Lake Reservoir is 3.7 miles off. Ask locally about Boulder Lake Reservoir if anything is unclear.