History In The Making: Clean Up The Lake Expands To Eastern Sierra

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Diver cleaning up
Diver with a full trash bag of cans collected from the bottom of Lake Tahoe.

Partnering with government, nonprofits, businesses, Mammoth Lakes Tourism & more

The Clean Up The Lake (CUTL) dive team that completed the 72-mile SCUBA cleanup of Lake Tahoe in 2021-2022, has just finished months of work establishing strategic partnerships in the Mammoth Lakes region with government, nonprofits, businesses, and Mammoth Lake Tourism, all leading to the organization solidifying a successful expansion into the Eastern Sierra. With these partnerships now in place, the team has just completed its first round of clean-ups and research in the region.

Pilot research from 2021 indicated the need for a full cleanup in June Lake, so this September the nonprofit completed the lakeโ€™s first-ever, circumnavigated cleanup. The result was more than anyone expected. Comparatively speaking to other lakes in the Sierra, over five times the amount of litter was discovered beneath the surface of June Lake. This litter included over 6,522 pieces that weighed over 3,404 lbs; shockingly the majority of the trash included 3,071 bait jars and over 1,100 aluminum beer and soda cans. The saddest part was that thousands of pieces of litter had to be left behind under the surface, marked as hot spots as the dive teams prepare to return for removal with more time in the near future. โ€œIt was the โ€˜hottestโ€™ hot spot our dive teams have seen yet,โ€ said CUTL Founder & Executive Director Colin West.

The partnerships wonโ€™t end with June Lake. The CUTL dive team climbed over 9,000 feet and began conducting pilot research dives in four of the lakes in the Mammoth Lakes Basin including Lake George, Twin Lakes, Lake Mary and Lake Mamie. Pilot research in Lake George showed signs of typical, submerged litter while also being flagged for unusually concentrated amounts of fishing line, hooks, bobbers, lures, and more leading to wildlife entanglement. Multiple live trout were freed from the littered fishing line during the pilot dives. Each of these lakes showed its own unique signs of environmental issues that all warrant remediation and future protection.

โ€œWhen I sat down with Colin to discuss what he was doing, the stewardship program immediately resonated with me and our Mammoth Lakes Tourism efforts to mitigate visitor impacts, but more importantly to educate our guests on ways to show more respect for our environment. The Clean Up The Lake program will not only have immediate environmental impacts on our pristine mountain lakes, but it will also show visitors, and locals alike, how impacted they are just below the surface by trash that is out of sight and therefore, out of mind.โ€

– MLT Executive Director, John Urdi

After cleaning four lakes in the last two years throughout the Sierra, removing over 53,000 pounds and 46,000 pieces of litter, and finding over 770 heavy lift litter items like boats, engine blocks and illegal moorings that are GPS tagged for future removal, Clean Up The Lake has come to a very unsettling conclusion. There is a widespread litter problem that has been ignored for decades in freshwater lakes all across the Sierra, and very likely, the world.

Through the continued removal of litter and the initiation of surveying for aquatic invasive species and algal blooms, CUTL hopes to engage the community, improve water quality, protect animal species both below and above the surface, and spread awareness to prevent this level of pollution from continuing. Clean Up The Lake will always continue to expand its research programs, partnerships, and environmental efforts to other waterways around the world. โ€œI couldnโ€™t be any more proud and excited to be expanding into Mammoth Lakes Basin this fall, with more to come in 2023,โ€ said West.


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