Few people know that in the middle of the San Fernando Valley in Los Angeles, there’s 2½ miles of the Los Angeles River in a largely natural state, surrounded by 2,000 acres of wildlife reserves and recreation areas. The Sepulveda Basin, an area left undeveloped following the Los Angeles Flood of 1938, when the Sepulveda Dam was built and the river downstream was channelized, is more than twice the size of New York's Central Park. In precolonial times, the Basin was a paradise for its inhabitants – rich in deer, rabbits, trout and a wide variety of flora essential for everyday life, including oak trees with an abundance of acorns. Today, most of this area remains home to native wildlife and an important stop for avian migration.

A key element of the Sepulveda Basin Vision Plan, released by the City of Los Angeles in June 2024, is the re-wilding of the stretch of the Los Angeles River running through the basin. Another project in the Vision Plan calls for the restoration of Bull Creek, a tributary that cuts through Lake Balboa Park to the river.

The health of a river depends on many factors, including its tributaries. The restoration of Bull Creek provides an opportunity for school children to observe, and participate where appropriate, in a project that’s essential to the life of the Los Angeles River; and restores essential habitat.

In 2008, the Army Corps of Engineers and the City of Los Angeles embarked on a restoration plan for Bull Creek. For many years, the 50-acre Bull Creek site had been a regular site for bird watchers and lovers of nature; and the nesting site for Least Bell's Vireos, listed as endangered in 1986 due to extensive habitat loss and degradation associated with urban development, exotic plant invasion, and expansion of agricultural practices into riparian zones. Unfortunately, storms in 2009-2010 caused severe erosion and collapse of the east bank of the creek. This resulted in the eastern boundary being fenced, cutting off access to the pedestrian walkway and interpretive signs, and the influx of many non-native invasive plants.

With its restoration as one element of the Lake Balboa Park Project, a ranger station in the proposed adjacent community center to provide security - and an endowment to cover ongoing maintenance, a restored Bull Creek with a healthy native plant riparian zone to stabilize its banks, filter pollutants, provide shade and contribute to overall water quality, can once again be a beloved area for observing nature, including Least Bell's Vireos and other varieties of avian life.