Concerns about flooding all along the San Joaquin River won't end anytime soon, and that has communities keeping a close eye on the levee that sits between them and the river.The portion of the San Joaquin River levee that runs behind Durham Ferry school in the Manteca area of San Joaquin County is facing a big test right now.“At Durham Ferry, they told me there was 10 to 12 boils that they had put sack rings around,” said Manteca city council member Charlie Halford. “They have seepage in other areas.”High river levels, a combination of months of storm activity, runoff and reservoir releases has created boils and seepage along the levee.More Like This | KCRA 3 Chief Meteorologist Mark Finan explains why snowmelt will keep San Joaquin River levels high “As the water level goes up, it increases the pressure and it looks for/finds channels to go under the levee,” Halford said.Water, finding its way into the area's sandy soil, has levee managers hoping that doesn't lead to levee failure or breaches. So they use sandbags and seepage blankets, they create booms and berms — all as a means of keeping the San Joaquin River water where it is and away from Durham Ferry school.“Where Durham Ferry is located, staff and administration is well-used to watching the weather, watching the river levels,” said Zack Johnson, public information officer with the San Joaquin County Office of Education.The San Joaquin County Office of Education started preparing for flooding starting last week, Johnson said.Students and their teachers were relocated to the office of education campus in Stockton. They moved livestock they work with at their rural campus offsite until the flooding threat on their campus subsides, but they realize that could be several more weeks or months away.“We are aware of the size of the snowpack, that reservoirs are releasing water,” Johnson said. "We're watching it very closely.”City and county governments, the area reclamation districts, fire departments, the Department of Water Resources and the Corps of Engineers are all coordinating as best as they can, according to Halford, to protect people and property.“We want to hope for the best. Plan for the worst,” he said. “Everybody is working really hard to prevent any levee breaches.” Emergency service planners say cooler temperatures in the area are actually helpful. They prevent the snowmelt from happening at a faster rate, which would also cause water levels to rise.