American Canyon City Manager Dana Shigley is retiring after six years as chief executive in the county’s second-largest city.

“After much discussion, my husband [Paul] and I have decided to take the plunge and retire,” she told the City Council Tuesday night. “I am excited to move on to new adventures and yet sad to leave the fantastic team we have at the city.”

She didn’t set a specific date for her retirement and said she would stay in office as long as it takes to find a replacement, a process that usually takes at least several months.

“I have enjoyed my six years as City Manager,“ she said, “but look forward to having more time for the things I enjoy.”

Shigley, 54, was hired in October of 2011 and took office the following January. She had previously served a variety of positions, ultimately city manager, with the city of Anderson, a Central Valley community with a population of about 10,000.

Shigley’s tenure at American Canyon has coincided with a maturing of the city, which celebrated its 20th anniversary in 2014. She and Mayor Leon Garcia have talked extensively about building a sense of community in the city, which has struggled to find a cohesive identity.

“Overall, I think my focus was on reconnecting with the community and tremendously improving our relationship with the community,” Shigley said before the council meeting. “We do a much better job of informing our community about what is happening and soliciting their feedback. We haven’t met all our community goals, but our residents know what is going on and can get involved.”

After a period of explosive growth in its early years, American Canyon has had to wrestle with increasing congestion on Highway 29, an issue that has loomed large for Shigley and her staff. They also had to deal with a number of major development projects, including an expansion of the complex that is home to the Wal-Mart and also planning for the Watson Ranch, which could add more than 1,200 homes to the city.

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Her administration was challenged by the prolonged drought that gripped California for almost five years. Unlike the other incorporated areas of Napa County, American Canyon has no reservoir of its own, depending entirely on deliveries from state sources. That made it tricky to find enough water to supply the city during the driest years of 2013-15.

Shigley said she and her husband plan to relocate to Santa Rosa, where they recent bought a house.

“I am appreciative for the opportunity to work here and will miss American Canyon,” Shigley said on Tuesday.