Current Conditions
as of April 19, 2025 4:55am
0.0 in | 52.4° F | 60.5° F | WSW 0.3 MPH gust to 0.3 MPH | 98.87' above sea level
January 2024
LOC Communication regarding 2024 Assessment and Special Assessment
Following its annual review of Lake Oswego Corporation’s budget and expenses, the Board of Directors has approved a 2.5% increase in the 2024 annual dues assessment and revised down the second installment of the legal defense assessment to $400 per…
After a longer than normal draw down, it is finally time to allow the lake to start filling again. As Mark Rosenkranz mentions in his update (here), contractors working on the Blue Heron Sewer Rehabilitation Project are nearing completion of their…
In our last update we informed you of the court’s letter denying our motion to vacate the findings and conclusions from phase one of the trial. In response to that ruling, our attorneys filed a letter with the court which you can find here.
…Dear Shareholders and Easement Members,
We are looking forward to another great year on the lake in 2023. As promised in my previous message, the purpose of this email is to update you on our plans for the upcoming year. Areas of focus include budget, water quality, safety, events, etc. Please take the time to read it through. If any questions or comments arise, please reach out. We really want to hear from…
LOC Communication regarding 2023 Assessment and Special Assessment
Following its annual review of Lake Oswego Corporation’s budget and expenses, the Board of Directors has approved a 3.5% increase in the annual assessment to help offset rising costs due to inflation, as well as a special assessment to…
Boy has time flown by this summer. I can’t believe it is September already and the last update was way back in January when the lake was refilling from the drawdown. Sorry about that.
The lake has greened up over the last week. I started this update last week saying the lake looked pretty good, but conditions have changed so that by September 18 we were seeing cyanobacteria films on the water surface, as explained…
Our refill is going well this winter, and we should be full before the February 15 fill date from the 2021 refill. We had a fast start to our refill with a lot of rain in early December, but it slowed a bit the latter part of the month, dipping below the 2021 line, but our wet January is catching us up again. With the forecast for a wet weekend and potentially wetter system coming through next week we will be full soon.
<!– wp:image…We are well into our drawdown and plan to start refilling the first half of December. It has been an active drawdown so far with the city busy replacing a sewer line in Blue Heron Bay and LOC staff testing a dredge option in Oswego Canal. Our water testing goes on although it is limited to the Main Lake only, but it is important to capture conditions during our drawdown.
We had a late season cyanobacteria bloom that…
As you can see from the recent water quality update we realized a temporary benefit from the alum application the end of July that improved water clarity. We don’t have all the data from that time period (particularly nutrients and phytoplankton), but we do know the application stripped algae and cyanobacteria cells from the water column, taking them and the phosphorus contained inside to the lake bed. This led to…
Our new website is up and the water quality information you see will be a bit different than before. There will be weekly sampling summaries posted on the Lake Data page that provides graphical trends of water quality data. Certain data we collect are available the same day, but nutrients, phytoplankton, and zooplankton data need to be analyzed by an outside laboratory, which can take a few weeks. Charts will…
This has been a frustrating and disappointing year for water quality. My last posting on August 12 was somewhat positive about the potential for a good summer, hoping the alum treatment later in the month would stave off a serious cyanobacteria bloom. However, that is not how things turned out, with cyanobacteria still active in mid-October.
Historically our phytoplankton starts with a large population of diatoms in…
January 2024
Updated Penalty Point System
PLEASE READ AND SIGN ACKNOWLEDGEMENT BELOW
This must be completed to receive current year stickers
Lake Oswego Corporation (“LOC”) is adopting a new Penalty Point System as part of our lake patrol model for addressing…
Swimming season has arrived. As the weather warms, we are finding more people swimming, floating and playing in the open water (lake areas outside designated swim parks/areas). Whether you are a recreational swimmer going for a quick dip to cool down, or a competitive swimmer taking part in a training session, take these common-sense precautions to stay safe…
Providing a safe and clean environment for residents of Lake Oswego while preserving the natural resources of the lake since 1942.
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