Health managers have said they have every confidence Grantham's maternity unit will be able to stay open.
Opponents say cuts would damage health services
There will be a review of services but officials said, with better promotion, they thought they could increase use of the unit to make it sustainable.
Earlier this year managers proposed midwifery-led services in Grantham were at unsustainably low levels.
Grantham Hospital will stay open but emergency general surgery, which was suspended in March, will cease.
Thousands of people have already marched through the town over plans to close the department.
Officials met in Woodhall Spa on Monday to discuss the results of a public consultation which ended in August.
They confirmed the unit would stay open, and a separate review would be held into its future, probably next year.
They said the number of births there needed to increase and they would try to promote the service more.
Officials pledged Grantham Hospital's future was secure.
But it is not clear exactly what services will be provided there in the future.
Campaigners from Save Grantham Hospital said they wanted to see more improvements in the accident and emergency department and the maternity service, but said it was good news there would more day surgery.
Dr Martin McShane of Lincolnshire Primary Care Trust said: "We do provide A and E at Grantham. We have increased the number of day cases and the number of elective operations in Grantham.
"There are a very small number of people who require emergency general surgery who have to be transported elsewhere on grounds of safety.