NEW! As of Jan. 1, 2013, Diamond Lake is open to year-round fishing. Use of live bait fish is prohibited.
- Season Limits: 8 trout/day, 8-inch minimum length with one over 20 inches and 2 daily limits in possession.
- Holdover trout: More than 400,000 trout 10 inches and longer.
- Fish stocking: 166,000 fingerlings.
- Boat speed limit: 10 mph.
- NO LIVE FISH USED FOR BAIT!
In 2006, ODFW used rotenone to rid Diamond Lake of 95 million tui chub, a bait fish illegally introduced in the late 1980s. The treatment was a success and no tui chub have been found since then.
Golden shiners, another bait fish, showed up in ODFW’s trap nets in 2008. Although it’s difficult to predict whether or not shiners would have a negative impact on the lake, they were also discovered in 1977 and never became a problem in Diamond Lake. Research shows that golden shiners are less successful in establishing large populations in natural lakes.
ODFW will continue using a variety of methods to monitor and remove shiners during peak spawning. Staff will also conduct creel surveys and educate boaters and anglers on invasive species prevention.
Keeping Diamond Lake “fishable and swimmable” is in the hands of everyone who enjoys it. Anglers and lake users should clean their boat, fishing and swimming equipment before entering Diamond Lake.
Report any use of live bait fish to Oregon State Police at 541-440-3334.
The Joe Merchep Umpqua River Foundation is offering a reward for anyone providing information leading to the arrest and conviction of a person who unlawfully places or plants or causes to be placed or planted any live fish in Diamond Lake. Contact Oregon State Police or the TIP line at 1-800-452-7888.
ODFW monitoring plans for this summer includes creel surveys, golden shiner sampling, trout stomach contents study, benthic macroinvertebrate sampling, invasive species boat surveys, trout growth rates and trout condition factors.
With our partners, including the U.S. Forest Service, Portland State University, and MaxDepth Aquatics, monitoring for 2011 will also include zooplankton, phytoplankton, and water quality sampling.