SANFORD, Fla. -- Even though Tropical Storm Hanna's track is more encouraging for Central Florida with record flooding along lakes and rivers even a small about of rain just adds to the misery.

Lake Monroe in Seminole County is still rising slightly.

Video: Hanna Making Flooded Residents Nervous

Water managers hope the lake will finally crest come Friday, but the expected crest has been a moving target because of the amount of water in the system.

The 7-foot seawall easily vanishes under nearly 8 feet of water.

Lake Monroe is expected to top out at just over 8 feet sometime on Friday, according to officials.

"This is the second time we've seen it. In 2004, it was not this high, but it was pretty high," resident Joe Provost said.

All along the St. John's River, people are dealing with high water.

The FEMA disaster recovery office is open, and people are encouraged to apply for both grants and loans.

"FEMA will give the homeowners money to make their home safe and secure, electrical, plumbing, things of that nature. Beyond that, they won't replace carpets or paint," Mike Price of FEMA said.

Low interest loans can cover what grants won't.

Some people cannot get to work.

"Two weeks now. The storm came in and we couldn't really drive through all that to get out there, and then the water started coming over the road and it just became a hazard," Ginger Howington said.

Howington is looking for a temporary job.

"You can really see how devastating it is," Sanford mayor Linda Kuhn said.

Kuhn surveyed the area by helicopter and saw homes on the brink.

Gov. Charlie Crist continued to urge state residents to be ready for Hanna -- or Ike or Josephine.

He said the state will remain in a state of emergency while these storms approach so it can be ready to respond immediately to any problems they could create.

Nearly 600 people remain in shelters all across the state.

There are still boil water notices for portions of Brevard, Osceola and Volusia counties.

Three disaster relief centers are open in Brevard County and one in Volusia County.

Video from Chopper 2 as it flew over Osteen in Volusia County showed that floodwaters are still rising from Tropical Storm Fay. So any new rain from Hanna or future storms will only add to the devastation.

In Flagler County, officials are still watching for beach erosion.

They're expecting higher than normal tides along the beach.

It wasn't that long ago Department of Transportation officials erected a granite rock revetment to protect scenic A1A.

Flooding and erosion are always a concern there. Flooding is also a concern in neighborhoods like Painter's Hill where nor'easters have been a concern in the past.

Flagler County officials may activate its emergency operation center on Friday, depending on the forecast.

Rising water levels also have Volusia County residents on edge.

Many residents still need assistance from FEMA in the wake of Tropical Storm Fay, and now there are several systems churning in the Atlantic.

A FEMA tent is set up in the parking lot of the Orange City Wal-Mart. Inside, flood victims can talk to representatives of several agencies able to provide help.

Flood victims in DeBary that are still waiting for the water to recede are finding it hard to relax.

"Now we've moved most of the furniture out of the house and what we still have in there we'll just put up on cinder blocks and raise it up about 10 inches, so if we get more water it wouldn't really matter anyway," one resident said.

Waters are slowing receding, but residents fear that one more heavy rain would put them back where they started.