He died from Canoeing.
http://ngothelinh.tripod.com/wcolby.htmOr.......
William Colby
Director of Central Intelligence (ret)
Died - April 27(?), 1996
William Colby had been the DCI from 1973 to 1976 under Nixon and Ford.
At age 76, Colby had found a new career and had just started writing for Strategic Investment at the time of his death. This had worried many insiders in the intelligence community who felt that Colby had already divulged too many of the CIA's secrets in the preceding years. Indeed, his dismissal by Ford because of his over-cooperation with Congressional investigations into CIA wrongdoing. It was Colby who had revealed to Congress the plans to kill Fidel Castro, the spying on American citizens (in direct violation of the CIA charter) and the conducting of biological tests by the CIA on unsuspecting citizens. George Bush replaced him.
According to the original CNN report, Colby was reported missing by neighbors who "recovered" his canoe, by one story from under the dock at Colby's house, by another report, 1/4 of a mile downstream from Colby's home.
Colby was by all report a methodical, tidy man, yet police found his home unlocked, his computer on, and a partly eaten dinner on the table. The official story is that Colby just put down his fork and decided to drop everything and go canoeing.
Colby at 76 was still a world-traveler and consultant to many corporations. He recently became an editor of an important financial newsletter, "Strategic Investment," which covered the Vince Foster "suicide" in detail. Its editors hired three renowned handwriting experts to investigate Foster's suicide note, which hadn't been found when his briefcase was first searched, but later materialized, torn into pieces, with no fingerprints on any of the pieces. Upon comparing this document with others of Foster's writings, these experts declared it was a forgery, and a not very good one at that.
Colby had old enemies as well as new, with plenty of motives for his extermination. He was in charge of the infamous Operation Phoenix during the Vietnam War, in which more than 20,000 South Vietnamese citizens -- supposedly Vietcong sympathizers -- were rounded up, tortured and executed. In the 1970s he opened some of the secrets of the CIA to Congress: "Colby insisted on going public about the agency's role in tapping the telephones and opening the mail of Americans; plotting the assassination of Fidel Castro, and using human guinea pigs for mind-control experiments involving LSD," the Times reports.
On Monday, May 6th, Colby's body was found just 20 yards from where his canoe had been recovered, in an area that had been thoroughly searched several times by helicopters and search teams.
Most notable about the body was the absence of a life jacket, which according to his wife, Colby always wore on the water.
As has since been proven to have happened in the JFK Jr. case false stories were being deliberatly planted in the media, including one quoting Mrs. Colby herself as having been told by William Colby by phone that he was going canoeing. Mrs. Colby denied any such story. The week that he died, Colby was scheduled to meet with the Disclosure Project.