Lake Robertson State of the Fishery

Lake Robertson State of the Fishery


Now let’s discuss the current status of the fishery at Lake Robertson. In the spring of 2016, biologists with the department did an electrofishing survey at Lake Robertson where they electrofished around the perimeter of the lake at night time and they collected 201 bass in this one survey. The majority of the bass collected were greater than 12 inches as you can see and there were six fish greater than 20 inches in length. How does the bass size structure compare to previous years you may ask? You can see that the bass population has remained fairly consistent over the years. This bass population at Robertson is balanced meaning very healthy any time this proportion of fish over 12 inches is between 40 and 70. As for relative abundance of largemouth bass you can see that bass numbers are up above average over the last four to five years. This is due to the consistent spawning success and recruitment of young bass into the population like these young of year largemouth bass seen here. On average it takes a bass five growing seasons to reach 12 inches in length and between six and seven years to reach 15 inches in length. This is very good growth and is quite comparable to other reservoirs in northwestern Virginia. As we mentioned earlier lake Robertson is known for producing large sunfish. As you can see in this spring 2016 electrofishing survey, the majority of bluegill that biologists collected were greater than seven inches in length. High numbers of quality bluegill indicate that the predator population in this case being largemouth bass is quite healthy and the amount of aquatic vegetation is being properly maintained. The department hopes that you decide to make the trip to Lake Robertson one day. And while we can’t guarantee that the fish will be biting when you get there. We hope that you will have an enjoyable experience. For more information on Lake Robertson please visit these websites.

local_offerevent_note October 22, 2019

account_box Gilbert Heid


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