Donna is an 18 acre lake located 15 miles north of Two Harbors, MN on the Drummond Grade (County Rd. 611). The lake lies adjacent to the Drummond Grade and can be accessed by the right-of-way off of the road. Maximum depth is 9 feet. Prior to this investigation, Donna had not been surveyed by MN DNR. Donna was surveyed during the summer of 2013 to gather baseline information about fish populations.
Brook trout abundance was 0.5 per gillnet in 2013. One specimen was captured that measured 11.0 inches. The fish was aged to the 2010 year-class. Not enough individuals were sampled to evaluate stock density or growth.
Yellow perch gillnet abundance of 0.5 per lift was below average compared to other Minnesota lakes of similar type. One specimen was captured that measured 7.1 inches. The fish was aged to the 2010 year-class. Not enough individuals were sampled to evaluate stock density or growth.
White sucker gillnet abundance of 5.0 per lift was average compared to other Minnesota lakes of similar type. Average length was 7.9 inches.
Other fish species sampled included creek chub, Iowa darter, black bullhead, blacknose shiner, bluntnose minnow, brook stickleback, central mudminnow, fathead minnow and northern redbelly dace.
Information was collected on aquatic vegetation, substrates and water quality. Twenty aquatic plant species or species groups were identified along 10 transects. Yellow waterlily was the most frequently found plant species (90% of transects) followed by bladderwort and smartweed (80% of transects). The most common substrate types were detritus, sand and silt which were identified along 90%, 70% and 70% of the transects, respectively. Results of laboratory water analysis indicate Donna is an alkaline, moderately hard water lake with low fertility.
Additional information is needed before deciding to manage this lake for trout. Data loggers will be deployed into Donna in 2014 to acquire water temperature data which will aide in determining if trout would survive if stocked.