Corona

Corona is a 24.5 acre lake with 12.1 acres (49%) of littoral area and a maximum depth of 30 feet. The lake is located 4 miles west of Sawyer and one half mile south of Highway 210. The lake is accessible by a 0.2 mile long footpath from a small parking area at the end of Long Lake Road. Corona was surveyed during the summer of 2007 to update information about fish populations. Corona Lake is managed as a put-and-take rainbow trout fishery with annual yearling stocking at a rate of 100 per surface acre (2,500). The lake is stocked with yearling rainbow trout averaging 7 to 9 inches. Maximum depth is 30 feet, but oxygen is often deficient at depths greater than 12 feet. Since most shoal areas drop off quickly, shore fishing can be effective. Rainbow trout gillnet abundance of 1.0 per lift was up slightly from 1997 (0.7). Rainbow trout catch has remained fairly stable from 1989 through 2007 ranging between 0.5 and 1.0 fish per gillnet and 0.7 to 2.0 fish per trapnet. However, during this assessment the trapnet catch increased to 4.8 per lift. Trout were likely more susceptible to being caught in trapnets during this assessment because sampling was conducted later in the fall when water temperatures are cooler and fish are likely shallower. Rainbow trout average length was 9.7 inches. Two year-classes were present, but 95% of fish sampled were from this springs stocking event, resulting in most of the fish measuring from 8 to 10 inches. A few fish survive the winter and attain a size of 12 inches or more. Growth is very slow for newly stocked fish in Corona Lake. Other fish species sampled include low numbers of golden shiners and abundant brown bullheads. Brown bullhead trapnet catch of 12.1 per lift was also above average compared to other similar lakes and higher than 1997 (6.7).

Corona is a 24.5 acre lake four miles west of Sawyer and one half mile south of Highway 210. It is accessible by a 0.2 mile long footpath from a small parking area at the end of Long Lake Road. Maximum depth of the lake is 30 feet, but oxygen is often deficient below 11 to 12 feet. Since most shoal areas drop off rapidly, shorefishing is usually effective. The lake is stocked annually with yearling rainbow trout averaging 7 to 9 inches. Most of the fish caught are from the current year's stocking, but a number will survive the winter and attain a size of 12 inches or more. Corona was chemically reclaimed in 1961 and brown bullheads have become numerous since then. They compete for food with the rainbow trout and are therefor undesirable.

From scale analysis, some rainbow trout are over-wintering in the lake. Three of 13 trout in the total sample were 2 year olds; the rest were from the 1992 stocking. No rainbows from the 1990 stocking (clipped) were found. Scale analysis also seems to indicate very little growth in the year of stocking; it appears that most of the annual growth occurs in the spring, prior to the noral late-May or early-June stocking.Bullheads are still numerous, though most were caught in trapnets this time, while none were in 1989. Direct year-to-year comparison is not possible, but it is probable that there is significant competition for the aquatic insects which constitute a major food source for rainbow trout.

Based on Minnesota DNR survey data, anglers target Rainbow Trout in Corona. See the full species list above for catch rates, size structure, and quality scores.

Minnesota DNR records list public access for Corona. Check the DNR LakeFinder page for the launch type and directions before you go.

Corona has a maximum depth of 30 feet, per Minnesota DNR data.

The most recent Minnesota DNR survey data for the main sport fish in Corona is from 2007. Surveys this old should be treated with some caution — fish populations change over time.

No invasive species are on record for Corona in Minnesota DNR data. Always clean, drain, and dry your equipment to help keep it that way.