Presentation on theme: "Lacamas Lake Water Quality Is Lacamas Lake safe to swim in?"— Presentation transcript:
Lacamas Lake Water Quality Is Lacamas Lake safe to swim in?
I began this project with the assumption that Lacamas Lake was safe to swim in but is it? This spot is so beautiful with a boat launch, pier, picnic areas and trails. After studying this area for a few weeks my opinion started to change. Is all of this beauty just lipstick on a pig?
This lake is 65 feet deep and 315 acres. It extends from Hockinson on the North end to Camas on the South. This watershed flows through forest, farm, industrial and residential areas. Poor land management and development has allowed sediment and toxins to spill into the lake causing algae growth and eutrophication below 18 feet. High nitrogen, phosphorus and ammonia levels have been recorded. Lake health has not improved much since clean up efforts in the 80s and 90s.
Sedimentation in Lake
Land Use Around Lacamas Lake
Heritage trail is 3.5 miles of beautiful scenery and well maintained green space.
Macro-invertebrates We were disappointed after evaluating the macro-invertebrates in the lake. Finds: 4 aquatic worms 2 blackfly larvae 3 midge larvae These are all tolerant This would indicate that the water quality is poor.
Summary The biggest surprise for me was that I cultured e coli in Lacamas Lake twice of the three tests. I contacted the health department both times and they didnt seem too concerned, also surprising. I had no idea that Lacamas Lake was so polluted or that it was eutrophic. It is good information for me to have when planning to go swimming. Too bad the general public doesnt have this information readily available. I was able to find out with some difficulty that Lacamas is only monitored once a month from May to December by volunteers. When looking for the results of this testing, I could only find a water study from It would be helpful to the public to be able to access this data so they could make an informed choice about where to swim in the summer.
Is Lacamas Lake safe to swim? In my opintion no, except for dogs.