I recently read that there are storm drains that extend into puget sound (unlike many other cities where the end of the storm drain ends with a grate above water and is visible somewhere). Anybody know where these are and how many? How far do they extend into the water?
Puget Sound divers - question about storm drains
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There are thousands of storm drains extending into Puget Sound ... most dumping stormwater runoff, untreated, directly into the Sound.
I work for a municipality that functions like that ... we have a pair of 98" pipes that dump millions of gallons of untreated stormwater into the Thea Foss Waterway (at the end of Commencement Bay) every time it rains. Many parts of King County are likewise ... right at the steps where a diver enters the water at Redondo for example, there's a 36" drain pipe that is an outlet for stormwater running down the hill from Pacific Highway and all the associated side roads.
A couple years ago I was working on a project that had me researching a lot of documents from the Dept. of Ecology. In one such document I read a finding that stormwater runoff dumps the equivalent of one Exxon Valdez worth of pollutants into Puget Sound every two years.
It's a big problem ... possibly the biggest environmental problem our area faces today ...
... Bob (Grateful Diver)
I work for a municipality that functions like that ... we have a pair of 98" pipes that dump millions of gallons of untreated stormwater into the Thea Foss Waterway (at the end of Commencement Bay) every time it rains. Many parts of King County are likewise ... right at the steps where a diver enters the water at Redondo for example, there's a 36" drain pipe that is an outlet for stormwater running down the hill from Pacific Highway and all the associated side roads.
A couple years ago I was working on a project that had me researching a lot of documents from the Dept. of Ecology. In one such document I read a finding that stormwater runoff dumps the equivalent of one Exxon Valdez worth of pollutants into Puget Sound every two years.
It's a big problem ... possibly the biggest environmental problem our area faces today ...
... Bob (Grateful Diver)
I work for King County and we don't have that many storm drains discharging directly to Puget Sound, but the ones we do have are very large.
The "pipeline" dive site at 64th Ave and Alki Dr. is actually one of them. Its large enough (96+") to easily swim into the open end and terminates in about 35ft of water.
Almost all of the storm sewers in Seattle are combined effluent (sewage and stormwater runoff). Only a few are seperated. The combined sewer outfalls are frequently marked with a 12x8" sign directly ashore. Signs advise remaining out of the water follwoing rain events.
The "pipeline" dive site at 64th Ave and Alki Dr. is actually one of them. Its large enough (96+") to easily swim into the open end and terminates in about 35ft of water.
Almost all of the storm sewers in Seattle are combined effluent (sewage and stormwater runoff). Only a few are seperated. The combined sewer outfalls are frequently marked with a 12x8" sign directly ashore. Signs advise remaining out of the water follwoing rain events.
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