Ford, now 51, delivered the information in a letter to Rep. Anna Eshoo (D-Calif.) and Sen.
Grassley was forced to postpone a planned committee vote on Kavanaugh's nomination scheduled for September 20 after Democrats and some of his GOP colleagues demanded the committee investigate the allegations.
The other women who spoke at the event described Kavanaugh as a family man who coaches a girls' basketball team, tutors children, goes to neighborhood barbeques and attends church.
Republican lawmakers are trying to win Senate confirmation for Kavanaugh ahead of the court's start of a new term on October 1 or, if not by then, ahead of the November 6 nationwide congressional elections, to show Republican voters they have made good on campaign promises to place conservative judges like Kavanaugh on the Supreme Court.More news: Fire tornado sucks hose into the air
Collins is an important player because she and a handful of other borderline senators could make the difference in the final vote on Kavanaugh in the Senate. Kavanaugh has denied the allegations. The Judiciary Committee offered to send its investigators out to talk privately with Ford at a place where she's comfortable.
The woman accusing Supreme Court nominee Brett Kavanaugh of sexually assaulting her three decades ago when they were in high school wants to testify next week before a Senate panel, her lawyers told committee aides Thursday. "In the last hour, the president is tweeting, questioning Dr. Ford's account - why didn't she go to the police?"
Miranda later removed the post, explaining, cryptically, that the post "served its goal", and that she "was not ready" for the media attention the post garnered - even though NBC News and other outlets reported Miranda's claims as a major break in the Kavanaugh story.
In a series of tweets, Trump defended the conservative Kavanaugh as under assault by "radical left wing politicians" seeking to "destroy and delay" his confirmation as a Supreme Court justice.
"Facts don't matter", added Trump, who himself faces regular accusations of twisting the truth.
Professor Ford alleges that at a party when they were teenagers 30 years ago, a drunken Mr Kavanaugh held her down on a bed, tried to remove her clothing and clapped his hand over her mouth when she tried to scream before she managed to escape.More news: French Court Orders Psychiatric Evaluation for Marine Le Pen Over ‘Dangerous’ Tweets
Republicans want to conclude the nomination process quickly.
The stakes are high.
More than 50 protesters opposing the confirmation of Brett Kavanaugh to the Supreme Court have been arrested on Capitol Hill.
Conway told CNN on Friday, "Let's not conflate the larger #MeToo movement with whatever did nor did not happen in the summer of 1982".
If two Republicans vote against Mr Kavanaugh, his nomination could fail.
But they're eager to avoid the spectacle of 11 Republican men cross-examining a woman who says she's been victimized by a man.More news: Marko Arnautovic an injury doubt for West Ham's clash with Chelsea