Bright

Bright Lake, a 645-acre basin located 2.5 miles northeast of Ceylon in Martin County, is a shallow system characterized by a maximum depth of 6.0 feet and a 4.4-mile shoreline lined with thick cattails and some bulrush. This emergent vegetation provides important habitat for a fish community that must endure the lake's susceptibility to winterkill. Because of these environmental constraints, the lake is managed primarily for Northern Pike and secondarily for Yellow Perch, both of which can tolerate relatively low dissolved oxygen levels. The lake's connectivity to other waterbodies in the East Fork Des Moines River watershed, such as Okamanpeedan and Little Tuttle, facilitates natural fish movement and helps maintain populations without the need for supplemental stocking, which has not occurred since 2003. In June 2025, Lake Biological Monitoring and Assessment staff conducted a comprehensive evaluation of the lake using nearshore sampling, trap nets, and gill nets. The nearshore survey, conducted via backpack electrofishing and seining at fourteen stations, captured sixteen species. While six species tolerant of disturbance, including Common Carp, Fathead Minnow, and Green Sunfish, are present, zero species intolerant of disturbance were found. The netting survey conducted earlier in the month utilized twelve trap nets and one gill net. This portion of the survey captured nineteen species in trap nets and eleven in the gill net. Again, zero species intolerant of disturbance were found. These combined datasets were used to calculate a fish-based index of biological integrity (FIBI) score. The FIBI score, composed of several fish community diversity and composition metrics, indicates the overall health of a lake by comparing it to what is expected for a healthy lake. For additional information on the FIBI, search for "lake index of biological integrity" on the mndnr.gov website. The resulting FIBI score indicates that Bright Lake remains below the general use impairment threshold for aquatic life, meaning the fish community is adversely impacted by environmental stressors despite showing slight improvements over previous findings. Despite these findings, the 2025 survey results highlight a unique fishery currently dominated by high catch rates of several recreationally important species. Northern Pike reached record levels with catch rates of 17.0 per gill net and 5.8 per trap net, significantly exceeding management goals and reflecting excellent spawning conditions within the watershed system. The Northern Pike population shows a healthy size structure, with fish ranging from 12 to 34 inches. Conversely, Yellow Perch remain in low abundance, likely due to competition from the abundant crappie population. White Crappie were captured at a high rate of 31.8 per trap net, with over half the catch measuring 10 inches or greater, while Black Crappie reached a record high catch rate of 13.0 per trap net. Additionally, Channel Catfish reached a record high of 5.0 per gill net. If this population continues to grow, it may help manage the Black Bullhead population, though the species remains at risk during severe winters. The 2025 survey was also notable for identifying seven species that had not previously been recorded in the lake, including Freshwater Drum, Gizzard Shad, Largemouth Bass, Shorthead Redhorse, Smallmouth Buffalo, Tadpole Madtom, and White Bass. The biological health of Bright Lake is ultimately tied to the condition of its water quality, habitat, and the broader watershed. While the lake currently offers strong angling opportunities for Northern Pike and crappie, the prevalence of species tolerant of degraded conditions and the absence of sensitive species like the Banded Killifish and Iowa Darter suggest that water quality remains a significant challenge. High nutrient and sediment inputs from the surrounding landscape can lead to algae blooms that hinder the ability of predators like Northern Pike to forage effectively. These survey results will be considered when the biological health of the lake is assessed during the East Fork Des Moines River Watershed assessment process, which will be completed in coordination with MN Pollution Control Agency. Maintaining natural shoreline buffers and implementing best management practices within the watershed, such as cover crops, no-till farming, buffer strips, targeted fertilizer application, and reduced tiling, are critical steps for reducing runoff and nutrients from entering the lake. These efforts are essential for improving the biological integrity of the lake and protecting its fish community for the future.

INTRODUCTION Bright Lake is a 645-acre lake located 2.5 miles northeast of the Town of Ceylon in Martin County. The basin is relatively shallow, with a maximum depth of 6.0 feet observed during the survey, and a shoreline length of 4.4 miles. A thick band of cattails is present around the perimeter of the lake, with some bulrush present. The ample emergent vegetation provides spawning and nursery habitat for several species of fish. Because of its shallowness and susceptibility to winterkill, Bright Lake is managed primarily for Northern Pike and secondarily for Yellow Perch, both of which can tolerate relatively low dissolved oxygen levels. Fish populations maintain themselves naturally, as stocking hasn't occurred on Bright Lake since 2003. Bright Lake's connection to other lakes and wetlands (Okamanpeedan, Pierce, Clayton, and Little Tuttle) allows movement of fish among the waterbodies, likely aiding in maintaining fish populations. Because of this connectivity to the East Fork of the Des Moines Watershed, rough fish populations such as common carp, bigmouth buffalo, and black bullhead have persisted in this system of lakes. Bright Lake was surveyed the week of June 8, 2015 to monitor fish populations using 11 trap nets. NORTHERN PIKE The system of lakes, wetlands, and streams around Ceylon, MN, of which Bright Lake is included, has historically been a favorable system for northern pike production. Excellent Northern Pike spawning habitat exists throughout the system. The 2015 Northern Pike catch rate of 3.6 per trap net reflected these favorable conditions, as this was the second highest Northern Pike catch rate observed on Bright Lake and was higher than expected catch rates for similar lakes. Catch rates have varied from 0.3 per trap net in 1999 to 4.5 per trap net in 1994, and have averaged 2.2 per trap net since 1989. Lengths of Northern Pike ranged from 10.8 to 33.0 inches and averaged 18.1 inches. Nearly every inch category between 10 and 33 was represented in the sample, indicating that natural reproduction is consistent in Bright Lake or the system of waterbodies connected to Bright Lake. Northern Pike were healthy but not plump. It appears that there is plenty of forage in Bright Lake including Bigmouth Buffalo, Common Carp, White Crappie, and Yellow Perch; however, the poor water quality may prevent Northern Pike from successfully foraging on the abundant prey fish. Bright Lake should provide a good Northern Pike angling opportunity. YELLOW PERCH Yellow perch have historically occurred in relatively low abundance in Bright Lake as catch rates have ranged from 0.0 per trap net in 1999 and 2003 to 1.6 per trap net in 1994. In 2015, the Yellow Perch catch rate was 0.9 per trap net, which is slightly above the long term average of 0.7 per trap net and within the expected range of catch rates for similar lakes. Size of Yellow Perch was small, with lengths ranging from 5.6 to 8.8 inches and averaging 6.9 inches. Yellow Perch were plump indicating that forage is readily available. Trap nets typically do not sample Yellow Perch well this time of year, so Yellow Perch may be more abundant that what the sample suggests. Gill nets are typically used to sample Yellow Perch, but were not used because of the shallowness of Bright Lake. WHITE CRAPPIE White Crappie were captured at a rate of 61.7 per trap net in 2015, which is the highest recorded catch rate in Bright Lake. Prior to 2015, catch rates varied from 0.8 per trap net in 1989 to 47.8 per trap net in 2007. The 2015 catch rate of 61.7 per trap net greatly exceeds the expected range of catch rates for similar lakes. Many of the White Crappies in Bright Lake are small; however, some fish over 10.0 inches are present (12 percent of the sample). White Crappie ranged in length from 6.0 to 12.2 inches and averaged 8.0 inches. White Crappie were plump, suggesting that the population is not stunted and that there is plenty of forage available. The small size structure is likely a result of the population being comprised of young individuals and harvest of larger White Crappie. Size of Bright Lake's White Crappie should increase after a couple of year's growth. Bright Lake currently provides a unique angling opportunity for White Crappie. BLACK BULLHEAD Historic catch rates of Black Bullhead have been highly variable, ranging from 2.2 per trap net in 1989 to 283.5 per trap net in 2003. In the two surveys since 2003, Black Bullhead abundance has been below the long term average of 122.0 per trap net, being captured at rates of 31.3 per trap net in 2007 and 77.0 per trap net in 2015. Black Bullhead sampled in 2015 ranged in length from 5.3 to 15.2 inches and averaged 8.9 inches. CHANNEL CATFISH Channel Catfish were captured at a rate of 1.2 per trap net which exceeds the expected range of catch rates for similar lakes, and is the highest recorded catch rate for Channel Catfish on Bright Lake. Prior to 2015, catch rates varied from 0.0 per trap net in 1989 to 1.0 per trap net in 1994 and averaged 0.6 per trap net. Lengths of Channel Catfish ranged from 10.5 to 21.8 inches and averaged 12.8 inches. If Channel Catfish continue to increase in abundance, it is likely that they may help control the Black Bullhead population and provide an additional angling opportunity. OTHER SPECIES The Bigmouth Buffalo catch rate was 3.6 per trap net. Lengths ranged from 9.8 to 29.6 inches and averaged 19.8 inches. Three Black Crappie were sampled and have historically occurred in low numbers (less than 4.5 per trap net) in Bright Lake. Common Carp abundance in 2015 (3.5 per trap net) remained consistent with 2013's catch rate of 3.7 per trap net. Common Carp ranged in length from 5.9 to 30.8 inches and averaged 15.1 inches. Five Quillback were sampled, marking the first time that they have been sampled in Bright Lake. Other species sampled included Orangespotted Sunfish (N=1), White Sucker (N=8), and Yellow Bullhead (N=9). Plants in the water and at the water's edge provide habitat, prevent erosion, and absorb excess nutrients. Shrubs, trees, and woody debris such as fallen trees or limbs provide good habitat both above and below the water and should be left in place. By leaving a buffer strip of natural vegetation along the shoreline, property owners can reduce erosion, help maintain or improve water quality, and provide habitat and travel corridors for wildlife. Best management practices within the watershed (no-till farming, cover crops, buffer strips, targeted fertilizer application, reduced or metered tiling) would help reduce nutrients entering the lake. High nutrient and sediment input can cause algae blooms and reduce overall water quality. Any improvements in the watershed are likely to have positive impacts on the fishery. Prepared by Jonah Dagel

Bright is a 645-acre lake located near Ceylon in Martin County. The lake has a maximum depth of 7.0 feet, a shoreline length of 4.4 miles and is a class 43 lake. Bright is managed primarily for northern pike while yellow perch and walleye are managed secondarily. Because of shallowness, gill nets were not used during the assessment. Bright Lake and its connecting marshes, lakes (Clayton, Pierce, Bright and Okamanpeedan) and streams have been a factory for northern pike production for many years. Excellent pike spawning habitat exists throughout this area, even though low winter dissolved oxygen sometimes takes its toll. The northern pike population is similar to lakes with physical and chemical characteristics like Bright. Net catches were down some from an all time high seen in 2003. Because of the ability for fish to move from lake to lake, catch rates may vary from survey to survey. Lengths of northern pike sampled in trap nets ranged from 19.2 to 29.2 inches with an average length of 23.9 inches. Based on our assessment in 2007, white crappie numbers are very high in Bright Lake. Lengths of white crappie sampled in our trap nets ranged from 7.6 to 12.3 inches and averaged 9.9 inches. Black crappie catch rate of 3.27 per set was similar to other years we have surveyed Bright Lake. Lengths of black crappie sampled in trap nets ranged from 6.6 to 12.4 inches and averaged 9.7 inches. The yellow perch population appears to be on the rise in Bright Lake. No yellow perch were sampled in trap nets in 2003 and 1999. An average number of yellow perch were caught in our nets in 2007. Lengths of yellow perch caught in trap nets ranged from 6.7 to 9.8 inches and averaged 8.6 inches. Trap net catch rates for black bullhead were down from 283.4 per set in 2003 and 223.5 per set in 1999 to 31.3 per set in 2007. Lengths of black bullhead sampled in trap nets in 2007 ranged from 5.8 to 11.6 inches and averaged 8.7 inches. Other fish sampled in trap nets included bigmouth buffalo, black crappie, channel catfish, common carp, green sunfish, white sucker, and yellow bullhead. To maintain a healthy fishery in Bright Lake, we need to promote Best Management Practices (BMPs) within the watershed to help reduce nutrients entering the lake. High nutrients and sediments in a lake can cause algae blooms and reduce water clarity.

Based on Minnesota DNR survey data, anglers target Channel Catfish, White Crappie, Black Crappie, Northern Pike, and Walleye in Bright. See the full species list above for catch rates, size structure, and quality scores.

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

Bright has a maximum depth of 7 feet, per Minnesota DNR data.

The most recent Minnesota DNR survey data for the main sport fish in Bright is from 2025.

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