DWR proposes to treat Lake Navajo in October in a bid to reset fishing
DWR press release
In an effort to restore trout fishing in Lake Navajo – and rid the body of water of its overwhelming population of Utah chub – the Utah Wildlife Division is considering a rotenone treatment later this fall. Prior to this fishing reset, the DWR wishes to meet with the public, explain the processing process, and answer questions about the proposed project.
DWR biologists will hold a public meeting to discuss the project and answer questions about this upcoming treatment. The information meeting will be held on September 10 at 6 p.m. at the Duck Creek Village Fire Hall at 3620 Mammoth Creek Road in the Village of Duck Creek. If you are unable to attend the meeting and would like to provide feedback on the proposed treatment, email DWR Southern Region Aquatic Director Richard Hepworth at [email protected]
The proposed rotenone treatment for Lake Navajo, a popular fishing destination in Kane County, would tentatively take place in mid-October. Rotenone is a natural substance that comes from the roots of a tropical plant in the bean family. It’s a respiratory toxin for fish, but it’s not harmful to humans, pets, or other wildlife, especially in the extremely low amounts that biologists will use to treat the lake.
Utah’s chub have invaded Lake Navajo – which make up over 90% of the water body’s fish – and currently outnumber trout – rainbow, speckled trout, moulac and tiger trout – which are stored there.
“Trout are the preferred species to fish in this lake, which is why we are working to restore Lake Navajo as a prize trout fishery,” Hepworth said. “With the low water levels this year due to the drought, this treatment to reset the fishery would be much more cost effective, so we thought it would be a good time. We have exhausted all of our other tools and efforts to restore the fishery, so this is our last option. “
Rotenone treatments have proven to be an effective management tool when water bodies are invaded by certain species of fish. The DWR increased the daily fishing limit to 16 trout (any size) on July 28 to give anglers the ability to capture and retain additional fish from Lake Navajo prior to the proposed rotenone treatment. This change is in effect until October 31, 2021.