070518 Three Oaks (MA)

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David Elsner of McHenry swims with grandson Charlie Elsner, 4, at Three Oaks Recreation Area on Thursday, July 5, 2018 in Crystal Lake. The National Weather Service listed a high of 89 degrees on Thursday.

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Diana Jaimes (left) and Ryan Vette, both of Crystal Lake, lay out in the sand to soak up some sun at Three Oaks Recreation Area on Thursday, July 5, 2018 in Crystal Lake. The National Weather Service listed a high of 89 degrees on Thursday.

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Paddleboarders explore the lake at Three Oaks Recreation Area on Thursday, July 5, 2018 in Crystal Lake. The National Weather Service listed a high of 89 degrees on Thursday.

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Leslie Rossi (right) digs in the sand with her daughter, Josie Knuth, 6, both of Schaumburg, at Three Oaks Recreation Area on Thursday, July 5, 2018 in Crystal Lake. The National Weather Service listed a high of 89 degrees on Thursday.

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Kristen Hansen-Elsner smiles as she plays with daughter Abigale Elsner at Three Oaks Recreation Area on Thursday, July 5, 2018 in Crystal Lake. The National Weather Service listed a high of 89 degrees on Thursday.

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Children and adults take turns jumping from the floating dock at Three Oaks Recreation Area on Thursday, July 5, 2018 in Crystal Lake. The National Weather Service listed a high of 89 degrees on Thursday.

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Beachgoers pack the facility at Three Oaks Recreation Area on Thursday, July 5, 2018 in Crystal Lake. The National Weather Service listed a high of 89 degrees on Thursday.

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David Elsner of McHenry swims with grandson Charlie Elsner, 4, at Three Oaks Recreation Area on Thursday, July 5, 2018 in Crystal Lake. The National Weather Service listed a high of 89 degrees on Thursday.

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David Elsner of McHenry swims with grandson Charlie Elsner, 4, at Three Oaks Recreation Area on Thursday, July 5, 2018 in Crystal Lake. The National Weather Service listed a high of 89 degrees on Thursday.

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David Elsner of McHenry swims with grandson Charlie Elsner, 4, at Three Oaks Recreation Area on Thursday, July 5, 2018 in Crystal Lake. The National Weather Service listed a high of 89 degrees on Thursday.

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Beachgoers pack the facility at Three Oaks Recreation Area on Thursday, July 5, 2018 in Crystal Lake. The National Weather Service listed a high of 89 degrees on Thursday.

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at Three Oaks Recreation Area on Thursday, July 5, 2018 in Crystal Lake.

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Diana Jaimes (right) and Ryan Vette, both of Crystal Lake, lay out in the sand to soak up some sun at Three Oaks Recreation Area on Thursday, July 5, 2018 in Crystal Lake. The National Weather Service listed a high of 89 degrees on Thursday.

hnews_0705_Three_Oaks_

Diana Jaimes (right) and Ryan Vette, both of Crystal Lake, lay out in the sand to soak up some sun at Three Oaks Recreation Area on Thursday, July 5, 2018 in Crystal Lake. The National Weather Service listed a high of 89 degrees on Thursday.

hnews_0705_Three_Oaks_

Diana Jaimes (right) and Ryan Vette, both of Crystal Lake, lay out in the sand to soak up some sun at Three Oaks Recreation Area on Thursday, July 5, 2018 in Crystal Lake. The National Weather Service listed a high of 89 degrees on Thursday.