County Levy Would Give Area Parks $33 Million : Government: Supervisors are studying a ballot measure to improve facilities such as Hansen Dam.

The Los Angeles County Board of Supervisors will consider putting a measure before the voters that would provide $33 million for San Fernando Valley parks, including $12.5 million for the long-sought redevelopment of the Hansen Dam Recreation Area.

The measure, which would levy a $12.52-a-year assessment on the average single-family homeowner in the county for 20 years, would also raise $20 million for parks and wildlife habitat in the Antelope and Santa Clarita valleys and northern Los Angeles County.

The supervisors Tuesday scheduled a March 3 hearing to decide whether to place the measure on the June ballot. The measure would provide $520 million for park and beach improvements and the purchase of bicycle, hiking and horseback riding trails.

The largest allocation in the Valley would be $12.5 million for the redevelopment of Hansen Dam, a popular recreation area that has deteriorated over the past decade and requires up to $35 million in improvements.

Hansen Dam “is an area that is seriously underserved,” said Esther Feldman, the prime mover behind the proposed measure and director of special projects for the Malibu-based Mountains Recreation and Conservation Authority. “Everyone agrees that that is a big-item project.”

Hansen Dam, which opened in the 1940s, was a thriving recreational area for nearly three decades. But over the past 12 years, the lake has been choked by debris washing into the basin and the surrounding park area has deteriorated.

The Army Corps of Engineers, which owns the site, is completing a master plan to redevelop the park, and contractors are expected to submit bids by November to build a 15-acre swimming lake in the first phase of the redevelopment.

Fausto Capobianca, an aide to Rep. Howard L. Berman (D-Panorama City), whose district includes Hansen Dam, said a combination of state and federal appropriation bills adopted last year raised $2.1 million for the swimming lake.

But Capobianca said the entire recreation area could use up to $35 million in improvements. He said the Army Corps of Engineers’ master plan calls for a second, 70-acre boating lake and improvements to 489 acres of open space.

The Hansen Dam improvements were included in a similar ballot measure that failed to receive the approval of two-thirds of voters and was defeated in November, 1990. The new measure, if placed on the ballot, would require a simple majority approval.

Other amounts for Valley projects in the proposed ballot measure are:

* $1.18 million for a community center in Agoura Hills.

* $1.24 million for a nature center in Burbank’s Stough Canyon.

* $3 million for a recreation facility, including tennis courts, in Calabasas.

* $250,000 for a youth baseball park in Calabasas.

* $400,000 to rehabilitate facilities at Dexter Park in San Fernando.

* $10 million to acquire and develop trails and parks around the San Fernando Valley and linked to Pasadena.

* $4.7 million to restore wildlife habitat and develop recreation facilities in the Sepulveda Basin.

Among the projects in the north county, Antelope and Santa Clarita valleys are:

* $1.5 million to rehabilitate picnic, restrooms, camping and lake areas at Castaic Park.

* $1.86 million to purchase 30 of 75 acres of desert habitat in Lancaster.

* $8 million for various projects in the north county, including a sports complex in the Lancaster-Palmdale area.

* $2.48 million to acquire and construct hiking trails, bike paths and equestrian trails along the Santa Clara River in Santa Clarita.

* $2.5 million to purchase 200 to 300 acres of wildlife habitat within a 7,000-acre woodland area in the Santa Clarita Valley.