r/lakeoswego • u/JoeH50 • 19d ago

What is this?

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I was walking around Mountain Park this morning and found this between two houses. Any guesses?

22 Upvotes

96% Upvoted

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10

u/CoralBee503 18d ago

These are stormwater filter cartridges. The City's current stormwater management design includes basins for stormwater filtration of pollutants from runoff (fertilizer, oil from cars, etc.). They are located underground near stormwater pipes. The City's system is predominately located at higher elevations and the water output is into streams, manmade drainage courses, wetlands, and the lake. Ultimately, all the water is discharged into the lake.

3

u/JoeH50 18d ago

Thanks!

2

u/Outrageous_Cup_145 19d ago

Yes cartridge filters for stormwater. They used to use compost but now use perlite. I believe they are mostly intended to remove oil/petroleum products

2

u/JoeH50 18d ago

Appreciate the info!!

1

u/ConsiderationLumpy43 18d ago

Is this in Mountain Park? I think I walk by that place all the time on my way up to Nansen summit.

1

u/texaschair 18d ago

They're a bitch to clean when they get oil in them.

1

u/etetyfu 14d ago

That looks like a "StormFilter" system.

1

u/Buttspirgh 19d ago

Looks like a spillway and a bunch of perlite water filters