The Green Monster

Adored in Fenway, Not in Lincoln City

Since we have now made it to the end of the 2012 recreational season it’s time to make a few observations. The season began with two public hearings; the first in May and a second in June where record numbers of the public provided comment on summertime lake levels.  At the conclusion of these sessions the board voted to change the target summertime lake level from 9.6 to 9.0 which began on June 15th.  In the August board meeting the board established an ending summer lake level target of 8.8 to accommodate the terms of the Districts impoundment permit.  The current lake level is at the 8.8 target.  In a week the District will remove what remains of the impoundment structure.

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As a result of this decision we know by observation that the lake was much lower this year.  We know this lower level impacted people as we got many reports from lake uses on how this lower lake level negatively impacted their boating experience.  There was however a more significant, more noticeable contrast in the lake this year from previous years. What happened to our lake this year?

On July 26th the District delivered the first Harmful Algal Bloom Surveillance (HABS) report by email as the season’s historic Blue-Green Algae bloom began.  This bloom quickly grew into large patches of thick green goo floating around the lake.  Early morning visitors to the lake this summer saw significant levels of floating algae over the entire surface of the lake.  Significant suspended algae can be found in the water column at almost any location on the lake on any day this summer.  Universally residents around the lake communicated their observations that they had never seen water that was in worse shape than this year.

Despite the terrible condition of the water, the lake was never posted beyond a moderate risk.  That is because the board changed their methodology for posting where one sample taken at Sand Point on August 28th exceeded cell count standards but did not exceed microcyctin parameters.  I support these new guidelines because they are now based on microcyctin levels, there is no real reason to scare the public if there are no toxins in the water threatening their health.  This year even though the lake looked terrible, the microcystin levels never topped .9ppb when over 8ppb is the health Department threshold.  The mess did however impact most people’s enjoyment of the lake, who would be covered with green dots as they exit the water.  So while not toxic the algae was very bothersome.

Another observation this year is related to the temperature of the lake.  According to the District’s own measurements the lake saw a 3% increase in the temperature this summer over last summer when levels were higher.  This spring, many predicted that lake temperatures would rise with lower water levels.  It appears that that this did occur.  With different weather this difference in lake temperature could have been more dramatic as average air temperature for Lincoln City were 2% lower this year when compared to the previous year. Lincoln City experienced similar amounts of rainfall during the period of impoundment with 1.6” in 2011 and 1.8” in 2012.  This is illustrated in the charts below, click for a larger version.

Devils Lake Temperature

Lincoln City Temp

Lincoln City Precip

There was a presentation given to the Board of Directors at the September meeting which characterized this summers results somewhat differently than we have here.  Let just say that we see the situation from a different viewpoint.  So in conclusion we cannot say with absolute certainty that the lower lake levels authorized by the DLWID board resulted in the observed higher temperatures and higher levels of summer green algae.  It can be said that the board decision on lake level did nothing to improve water quality this summer.


Filed under DLWID, Lake Level, Water Quality

2 responses to “The Green Monster

  1. Phillip R Haueter

    The lake level is too low!!!!! No surprise that algae growth and temperature would increase with shallower water!!!! This level is ridiculous and has ruined our recreational times on the lake. This must be changed or we must remove the current management and replace it.
    We have been on the lake for over forty years and never have seen it this bad shape.
    We have had our house on the market all summer and now it has come to our attention that buyers are not interested in mudfront property, because of the lake level.
    We are considering a lawsuit for damages!!!

  2. Jack Strayer - Lake Drive - Lincoln City

    The Devils lake Navigator is too kind. The DLWID Board has taken action to lower the lake level – which was authorized by the Oregon Water Master – by releasing over 200,000,000 gallons of water at the start of the summer. There should be little surprise that we have higher water temperature, lower lake levels [mud front property] and scum so thick that you can cut with a knife. My family was not able to use our property for children swimming or use our boat lift [low water] since the start of August. Every one should let the DLWID Board know how this summers poor lake conditions have impacted them by emailing the Board [known by some as scum-baggers] at Please the only way to drive some sense into lake management is to let your voice be heard – loud and clear.

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