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Islands in the Street: Turning Gray Space Green

Each month, City Parks Alliance names one “Frontline Park” as a standout example of urban park excellence, innovation and stewardship from across the country. In recognition of its partnership and community engagement efforts, Avalon & Gage Park has been named a Frontline Park.

AG1IntAvalon & Gage is a vibrant, eco-friendly oasis and public green space situated on a traffic island at a busy intersection in South Los Angeles. Built in partnership between the City of Los Angeles, the Los Angeles Neighborhood Land Trust (LANLT), and nearly a dozen local organizations and businesses, this 1/3-acre lot has been transformed from a barren plaza into a welcoming neighborhood park with amenities for all ages.  Continue reading

Designing New Water-Smart Parks: Two Stories From California

The following is an excerpt from City Parks, Clean Water, a report by the Trust for Public Land’s Center for City Park Excellence that examines the role of urban parks in managing stormwater. This is the eighth installment in a series of 20 posts.

When it comes to green infrastructure, the easiest parks to work with are new ones — facilities that don’t yet exist and can be specifically designed with stormwater management in mind. Every park is different, from size to geography to the surrounding culture and politics, but when it comes to water-smart parks there are three main issues to be considered:

  • Is the physical relationship of the park to the surrounding community such that a redesign could reduce neighborhood flooding or the pollution of downstream waterways?
  • Does the park have any available space for water flow and storage?
  • Is the composition of the existing soils, water table and underlying rock such that the park can absorb a significant amount of water in the necessary amount of time?

    Tujunga pathway and stream - credit Water Education Foundation

    A recreated streambed at Tujunga Wash in Los Angeles helps revive depleted aquifers. (Water Education Foundation)

Continue reading

The Goals of Combining Parks and Stormwater

The following is an excerpt from City Parks, Clean Water, a report by the Trust for Public Land’s Center for City Park Excellence that examines the role of urban parks in managing stormwater. This is the seventh installment in a series of 20 posts.

City parks departments and water agencies both stand to benefit from designing parks for stormwater management. However, it isn’t always easy to meet the needs of both parties, as well as those of the citizen users of a park. For one thing, stormwater has a complex range of impacts, and the techniques for dealing with those impacts are not easy to carry out, or even to explain to the public. There are also many different kinds of park users who have vastly different opinions about what makes a park great and what degrades it. Continue reading

Public School 261, Brooklyn

The following is an excerpt from City Parks, Clean Water, a report by The Trust for Public Land’s Center for City Park Excellence that examines the role of urban parks in managing stormwater. This is the sixth installment in a series of 20 posts.

A schoolyard in New York is easing the burden on an overtaxed waterway while also providing additional community play space in a park-poor neighborhood.

Brooklyn’s P.S. 261, whose schoolyard had been paved over decades earlier, leaving a half-acre of asphalt and a deteriorated jungle gym for recess, was one of the few locations in its neighborhood that had a bit of open space. Fortunately, the site was a priority for two different city agencies — the city’s Department of Education (for playground renovation) and the Department of Environmental Protection (for water quality improvements from reduced sewer overflows) — as well as a private conservation group, The Trust for Public Land.

TPL has been working with New York City since 1996 to convert school playgrounds into after-school-hours community parks. In the early days of the partnership, the goal was merely to work with students, parents, teachers and community residents to create great play spaces with such amenities as fields, running tracks, gazebos, basketball and game courts, and even hair-braiding areas. Beginning in 2012, the mission was expanded to also include stormwater management.

P.S. 261 was the first of what became 40 schoolyard renovations carried out through the three-way partnership. Although the construction could have become a source of strife in the community, the public process and the many ancillary benefits to the neighborhood were so compelling that the reworked park was accepted enthusiastically. Permeable pavers reduce runoff from the hardtop, rain gardens and the artificial turf field absorb runoff, and the gazebo features a green roof and rain barrels to store runoff for irrigation during dry spells. The field itself consists of permeable artificial turf underlain with broken stone to store stormwater and perforated pipes for drainage. All told, the half-acre park can capture about 500,000 gallons of stormwater annually.

Girls play jump rope at P.S. 261 Playground

Student drawings inspired the art on the schoolyard’s new, permeable blacktop. The outdoor classroom space and gardens are visible in the background.(Pedro Diez)

Fortunately, even in the cramped quarters of an inner-city schoolyard, it’s not either/or — play or store. “Stormwater management features always rank high on kids’ priority
lists. They like green spaces,” explained Mary Alice Lee, New York playground program
director for TPL. “It’s not a tradeoff between basketball courts and rain gardens since we
can squeeze both into even a small space.”

Each renovated schoolyard costs about $1 million (including $650,000 for construction) and is funded primarily by the two agencies with supplemental donations raised by TPL. As with other schoolyards renovated through the initiative, P.S. 261 must be open to the general public outside of the school day from dawn to dusk and on weekends, vacations, and holidays; the school’s custodian receives extra compensation from the city for taking on added responsibilities in the schoolyard.

“There are always growing pains in taking a successful program to scale,” explained
DEP assistant commissioner Angela Licata, “but our only challenge has been managing
construction delays against our strict consent decree deadlines. This was such a
clear win-win situation for us and the school that we’d like to see participatory design
and stormwater management become standard practice in every schoolyard capital
improvement in New York.”

Students perform hand stands at P.S. 261 Playground

(Pedro Diez)

 

Cromwell Park, Shoreline, Wash.

Cromwell Park

(City of Shoreline)

The following is an excerpt from City Parks, Clean Water, a report by The Trust for Public Land’s Center for City Park Excellence that examines the role of urban parks in managing stormwater. This is the fifth installment in a series of 20 posts.

After the Seattle suburb of Shoreline passed a parks and open space levy in 2006, the city sought renovation projects that could meet multiple city goals. One opportunity arose at 9-acre Cromwell Park, a flat field on the site of a former school in a neighborhood with frequent floods. The surrounding Meridian Park community had already been targeted for a major stormwater upgrade by the city’s public works department.

CromwellDrainageProblem before

Before renovations. (City of Shoreline)

“It was filled with a lot of dead grass and not much else,” laughed Kirk Peterson, who oversaw the project for the parks and recreation department. The two agencies partnered on Cromwell Park’s redesign, radically restoring the site’s natural topography and redirecting runoff to a wetland for treatment. They built new inlets from adjacent residential streets and a nearby county building, where most of the runoff percolates into the ground. (In a deluge an overflow outlet releases excess water to the sewer system.) The 1.33-acre wetland can hold an acre-foot of water (almost 435,000 gallons), enough to eliminate the neighborhood flooding problem.

Most noticeable to residents are the recreational improvements. The renovation added a new playground, a full-size basketball court, and a new baseball field. Walking trails encircle the wetland, even crossing it on a bridge. Neighbors were adamant that the wetlands not be fenced off, Peterson noted, although the city eventually had to install safety cables by a particularly steep-sided section. One of the best investments, Peterson added, was the selection of diverse, native wetland vegetation that makes the park look good even in dry spells.

Changes in the park sacrificed some recreational space, but Peterson said the wetlands have become one of its most popular features. “In the design process, neighbors were skeptical. They were worried about mosquitoes and bad smells. But now people love the space. There is often interesting wildlife, and people are fascinated to see the basins fill up with water after a rainstorm.”

Design and construction, which lasted from 2007 to 2010, cost $1.6 million, with about
two-thirds coming from the park bond and one-third from the Surface Water Utility Fund. The two agencies share maintenance responsibilities, with the park costing about $60,000 a year and the stormwater features about $11,000.

Cromwell Park credit City of Shoreline

This sculpture helps show the wetlands’ work, disappearing and reappearing with fluctuations in water levels. (City of Shoreline)

 

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