Beginning Monday, sport fishing on Campbell, Chester (including University Lake) and Sixmile creek drainages will be closed until June 14 to protect small populations of native rainbow trout. For the remainder of the year, only catch-and-release fishing will be permitted.

"Campbell and Chester creeks are urban creeks with paved trail access along good portions of their reaches, making them popular spring and summer fisheries," assistant area management biologist Chuck Brazil wrote in a press release. "These small populations of wild rainbow are particularly vulnerable during spawning."

On other Anchorage area lakes, anglers can take five rainbows per day, one of which can be 20 inches or longer.

Sixmile Creek on Elmendorf Air Force Base is closed from its mouth upstream to Lower Six Mile Lake.

Other angling restrictions beginning Monday include:

• Closing Bird Creek through July 13 to protect a small wild return of king salmon that has averaged only 128 fish since 2000, down from nearly 200 the preceding decade. State fishery biologists say illegal and incidental king harvests have thinned the kings. A favorite spot for silver and pink salmon anglers, Bird Creek will reopen July 14.

• Ship Creek upstream of the Chugach Power Plant to the upstream side of the Reeve Boulevard bridge will be closed through Sept. 30 to protect wild populations of spawning rainbow trout. Poor returns of king and silver salmon the last two years and illegally or accidentally caught salmon "have made broodstock goals difficult to meet," Brazil said. Fish and Game collects broodstock from salmon returning to Ship Creek. Salmon smolt and fingerlings reared from Ship Creek broodstock are used for stocking in the Anchorage area as well as Mat-Su, Prince William Sound, Resurrection Bay and the Kenai Peninsula.

• Symphony Lake high in the Chugach Mountains will close to all sport fishing until July 1 while its population of grayling spawn undisturbed. Afterwards, anglers will be limited to two fish daily, with only one exceeding 12 inches.

The 35.6-acre lake lacked fish until it was stocked in 2001 and 2003 -- and Symphony's 2,648-foot elevation keeps the lake ice-covered into summer.

"It's a beautiful setting, the fishing is really good and it's a very productive lake," Brazil said.

Despite a 12-mile roundtrip hike to reach Symphony, "angling pressure has increased vastly," Brazil said.

The most recent catch estimate is 3,000 grayling in 2008. Brazil hopes restrictions will preserve a range of young and older grayling that can sustain themselves. "We don't want to get a population that becomes stunted with a bunch of small fish," he said.

In recent years, complaints of anglers exceeding what was previously a five-fish limit contributed to Fish and Game's decision to impose restrictions.