A former Olympic canoeist who had been arrested in June on charges that he had vandalized the Lincoln Memorial Reflecting Pool has been indicted, according to court documents. He is charged with “destruction of property $1,000 or more,” a felony.

President Trump blamed vandals for the problems following a quick and costly makeover of the pool, and the canoeist, David Carter Hearn, 67, of Bethesda, Md., was among the first to be charged. The U.S. Park Police had arrested Mr. Hearn near the pool on June 19, and accused him of destroying government property. At the time, Mr. Hearn denied the charge in an interview with The New York Times.

In April, President Trump announced that he would be fixing “the once beautiful Reflecting Pool.”

The pool’s problems, including leakage and the routine algal blooms, had bedeviled previous administrations, including Barack Obama’s, but Mr. Trump declared that when he was done, the pool would be “much more beautiful than the day it was built!”

The administration awarded no-bid contracts to drain, resurface and refill the pool at a cost of $16.4 million, but by mid-June it was clear that things were not going according to plan.

The water was turning green, proof that the algae was still present. Chunks of the sealant, which had been recently applied to the pool’s concrete slabs, were spotted floating in the water in early June.

Past administrations have wrestled with keeping the pool free of algae, but experts said some of the current problems were because of decisions made during the pool’s rushed makeover. Mr. Trump blamed vandals, who he said, without citing evidence, had poured fertilizer into the water to nurture the algae.

The area was quickly surrounded by security officers. Federal officials have said that seven people, including Mr. Hearn, have been arrested on charges of vandalizing the pool.

This is a developing story. Check back for updates.

Clarence Williams contributed reporting.