Arlington County residents on Tuesday voted to borrow more than $150 million to build swimming pools, schools and streets while voters in Fairfax agreed to spend $30 million to protect a flood-prone neighborhood and Alexandria approved another term for Mayor Bill Euille.

Throughout Northern Virginia, voters agreed to issue bonds to raise money for a variety of projects, including $50 million in Arlington to build a colossal aquatics center along the Potomac River. More than 60 percent of voters approved the parks and recreation bond issue, unofficial counts show.

The $80 million center will be part of Long Bridge Park in Crystal City and will include four pools, an indoor water park and glass walls overlooking the Potomac and the Washington monuments.

(See a photo gallery of renderings for the proposed swimming complex)

In Fairfax County, more than 75 percent of voters approved $185 million worth of bonds, including $30 million to build a levee and install a pumping station in the flood-prone Huntington neighborhood, which was struck again recently by Superstorm Sandy. The Huntington project was approved by voters after three members of the Fairfax County Board voted against it in May, saying it cost too much and benefited too few residents.

Board Chairwoman Sharon Bulova, who supported the flood-protection bond, said it was "one of the few ways the county could fund infrastructure" to protect Huntington residents from massive flooding.

Also Tuesday, Alexandria residents voted to retain incumbent Mayor Bill Euille, who defeated his independent challenger Andrew Macdonald. Macdonald, who sharply criticized Euille's vision for the city's Waterfront Plan, was his first challenger since 2003.

Democrats ousted Republican incumbents Alicia Hughes and Frank Fannon to sweep the Alexandria City Council race, as well. Democratic incumbents Del Pepper and Paul Smedberg were victorious, as well as Justin Wilson, Allison Silberberg, John Taylor Chapman and Tim Lovain.

Elsewhere, in Arlington, Democratic incumbent Libby Garvey received roughly 58 percent of the vote to defeat Republican Matt Wavro and Green Party candidate Audrey Clement to retain her seat on the county board. Garvey, who was elected to the board in March after then-member Barbara Favola won a seat in the state Senate, has been a vocal opponent of Arlington's proposed streetcar system.

"I'm thrilled to have won my own four-year term," Garvey said. "There are a lot of important decisions ahead of us, and I'm honored to represent the people of Arlington."