Canyon Lake Phosphorus Management Program

Updates on The Alum Treatment Project for Canyon Lake from Aquatechnex

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Fall 2017 Alum Treatment is Scheduled for week of September 25th

Aquatechnex biologists will be treating Canyon Lake with Aluminum sulfate to sequester and remove phosphorus as part of the TMDL management plan.

The work will start on the main lake and that is expected to take from Monday through Wednesday.  The east arm and the north Ski areas will be targeted on Thursday and Friday.  We will be demobilizing on Friday.

We will be posting daily updates as we get going at this site.


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Rapping Up First 2017 Alum Treatment Today

Aquatechnex will be demobilizing from the lake this afternoon after completing the first Alum treatment of 2017.  The silt load from the recent rains generally carries a considerable phosphorus load.  The objective of early treatment was to get in the water prior to spring Algae Bloom that has been a treatment issue in the past.  Water transparency started the week about 2 inches and was measured at 3 feet today using a Secchi disk.

At this point the second treatment is scheduled for September of this year.  We will be using this page to communicate again as that work gets closer.

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Looks like we are go for tomorrow

Aquatechnex will begin the 2017 first Alum Treatment tomorrow in the East Arm from the East Boat ramp.  It is expected to take tomorrow and Thursday morning to complete applications to those areas.  The team will then move to the main lake for the balance of Thursday and Friday.  The north Ski Area will be treated on Monday.

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Update on Treatment for Week of Feb. 6

Our team has arrived at the lake and are organizing to begin treatments.  As today there is rain in the mix, we will be evaluating where to start treatments tomorrow based on whether or not the dam is overflowing.

If there is no overflow in the morning we will probably start in the north end of the main lake working out of Holiday Harbor Boat ramp.  If conditions are such that there is water spilling over the dam, we will start in the East Arm of the lake working from the East Boat ramp Tuesday and part of Wednesday and mobilize to the main lake later in the week after spillage has stopped.


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Canyon Lake First 2017 Alum Treatment is go for next week

Aquatechnex at the direction of the Lake Elsinore and San Jacinto Watershed Authority will be mobilizing to treat Canyon Lake with Aluminum Sulfate this coming week.  We will be getting organized on Monday and should be starting treatments on Tuesday.

At this point we are not sure where treatments will start.  There is a small rain event forecast for Monday, if this results in the dam spilling, we will start in the East Arm of the lake.  If there is no spill we will be starting on the main lake from Holiday Harbor.

If your interested, keep reviewing this page and we will update you daily.  If you have not seen the video published on this project and are interested in more information you can click on this link.

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Canyon Lake Alum Treatment for Winter 2017

We are tentatively scheduled to begin the 2017 Alum treatment for Canyon Lake the week of February 6th, 2017.  The tentative plan will be to mobilize equipment to Canyon Lake on Monday February 6th.  Alum treatments will begin on the main lake on Tuesday February 7th.  We should be done on the main lake Wednesday afternoon or Thursday morning, move to the East Bay on Thursday and complete that Thursday and Friday if necessary.

This treatment was to have occurred last week, but water levels and the flo0ding conditions causes us to consider delaying it.  There is one water quality testing event that will happen on Thursday of this week that may impact the schedule.  Interested parties should check back to this web site on Friday and we will have an update. 

This treatment should help with the sediment suspended in the lake to some degree as well.  Sediments can carry significant amounts of phosphorus.

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Day Three and Four

On Wednesday September 28th, we will be treating the north end of the main lake, working from Holiday Harbor.  We will also be using one boat to go through the tunnel into the East Arm and start working the western end of the arm.

We will be moving loading operations to the East Boat Ramp on Thursday Morning, will finish the East Arm Thursday and do the North Ski Area in the early afternoon, we will then demobilize from the lake and see you again in the spring as the group wants to keep the Alum treatments going.