Greenwood Lake is shallow with heavily bog stained water and the many boulders that can make boating hazardous. Access is a concrete ramp on the southwest end of the lake, off of Lake County Road #2.
The 2009 walleye population in Greenwood Lake was above average for the lake class although within a range seen in previous investigations on this lake. The average length was 12.6 inches with 14% of the catch was greater than 17 inches. Anglers report Greenwood Lake has good numbers of fish, but the walleyes tend to run small. Walleye angling holds up well during daylight hours in Greenwood Lake, probably due to the dark, bog stained water and shallow open expanse.
Northern pike numbers were above average for the lake class, the average length was 19.0 inches, which was below average. The northern pike catch in 2009 was made up of a large range of sizes, many small fish in the sample (which included two fish over 30 inches) brought down the average size.
Yellow perch numbers were above average with 15% of the catch greater than nine inches. Large numbers of young-of-the-year yellow perch, often seen on Greenwood Lake, provide a good forage base. Poor, mid-summer angling might be the result of a large yellow perch hatch. White sucker, rock bass and three types of shiners were also sampled in the 2009 assessment.