Feeds:
Posts
Comments

Posts Tagged ‘flooding’

BY BRADFORD MCKEE

FROM THE OCTOBER 2016 ISSUE OF LANDSCAPE ARCHITECTURE MAGAZINE.

 

“It’s happening again.” That was a repeated phrase May 27 on Twitter as a deluge of water came downhill on Main Street in Ellicott City, Maryland, carrying cars and garbage and ruining businesses that had rebuilt after a similar flood in 2016. This time, the historic town received more than seven inches of rain within a few hours; a Maryland National Guardsman was killed as he tried to help a woman rescue her cat.

Ellicott City has known flooding since its founding, though it now comes from above the town rather than creeping up from the Patapsco River below. Our editorial in October 2016 explains the problem, which officials still, apparently, have not been able to fix.

——

Main Street in Ellicott City, Maryland, has reopened, its historic storefronts repaired for the moment but its bigger problems unsolved. On July 30, almost six inches of rain fell in two hours right atop the 244-year-old former mill town—now a shopping and dining destination—which is built into a tight granite valley atop a network of streams that flow into the Patapsco River. The flood was a surprise. The water came not from the river but from upland, where suburban development in recent decades has hardened the ground. Main Street turned into a torrent within minutes. Dozens of people who had gone out to shop or eat had to be rescued, and two people died. The water shoved around a couple hundred cars and gouged out the streetscape, baring the infrastructure beneath about 100 ruined businesses. (more…)

Read Full Post »

BY ZACH MORTICE

Homes along old Highway A1A in Summer Haven, Florida. Photo courtesy St. Johns Public Works.

The McHarg Center—a new research initiative that will study the intersection of urbanism and ecology—is dedicated to studying how “urban growth and all of its related infrastructure can relate better and be better tuned to ecosystems,” says Richard Weller, ASLA, chair of the landscape architecture department at the University of Pennsylvania. The center is awaiting its formal launch next year with an exhibition, book, and conference timed to the 50th anniversary of Ian McHarg’s seminal book Design with Nature. In the meantime, the center, housed within PennDesign, has invited Jeff Goodell, the author of The Water Will Come: Rising Seas, Sinking Cities, and the Remaking of the Civilized World (Little, Brown, and Company, 2017), to visit for an inaugural lecture on March 29, at 6:00 p.m. in the lower gallery of Meyerson Hall.

In the spirit of McHarg’s research, Weller envisions the McHarg Center as an intensely multidisciplinary place. “When he completely overhauled the curriculum at Penn, he stacked the building with scientists,” Weller says. Likewise, Penn’s McHarg Center will invite scientists, designers, engineers, and public policy experts into an (more…)

Read Full Post »

BY RACHEL DOVEY

The team led by SCAPE proposes breaching levees to allow trapped sediment out, creating a stronger network of marshes and mudflats that can cushion developed areas. Image courtesy SCAPE/Public Sediment team.

They’re no stranger to wildfires and drought, but the cities around the San Francisco Bay haven’t been hit with a climate change-fueled disaster on par with Hurricanes Sandy or Harvey—yet. Still, sea-level rise won’t spare the metros. Even if they escape the drowning predicted by certain apocalyptic maps, Bay Area residents rely on freeways and rail lines built on soft, low-lying bay fill—areas particularly vulnerable to flooding and erosion. And the region’s tidal marshes and mudflats, which should act as natural barriers, are slowly losing sediment owing to poorly engineered dams.

“Unlike New York City, the Bay Area has all these slower and more invisible problems related to climate change,” says Gena Wirth, ASLA, the design principal at SCAPE Landscape Architecture.

The Resilient by Design Bay Area Challenge is bringing some of those unseen issues to light. Last year, judges selected 10 winning teams (SCAPE is the leader of one) made up of ecologists, designers, and landscape architects to imagine infrastructure that works with the region’s shifting landscape rather than against it. The challenge, which is funded by the Rockefeller Foundation, among others, is modeled on New York’s post-Sandy Rebuild by Design contest, with one key difference: This one is proactive, not reactive. Instead of waiting for federal funds to come in after a disaster, (more…)

Read Full Post »

THE RISING TIDEWATER

BY BRETT ANDERSON / PHOTOGRAPHY BY SAHAR COSTON-HARDY

Disparate but urgent efforts to address sea-level rise in the Virginia Tidewater, one of the country’s most important strategic centers, are striving to keep up with visible realities.

FROM THE DECEMBER 2017 ISSUE OF LANDSCAPE ARCHITECTURE MAGAZINE.

The first question that sprang to Ann C. Phillips’s mind soon after she moved to Norfolk, Virginia, in 2006 was, “Why, when it rains, does the whole place submerge?”

She wasn’t referring only to dramatic weather events, although Phillips, a retired rear admiral in the U.S. Navy, landed in Norfolk during a bumper crop of those: Norfolk saw more major coastal storms and hurricanes in the 2000s than in the four previous decades combined, according to the city government.

Harder to fathom were the floods caused by light rains and “blue sky floods” triggered by lunar tides. Tidal flooding affects low-lying areas of Norfolk nine times per year on average.

These more regular floods were unlike anything Phillips experienced growing up in Annapolis, Maryland. They’re an alarmingly routine part of life in Norfolk and the surrounding Hampton Roads area (more…)

Read Full Post »

This slideshow requires JavaScript.

This December LAM is under (and around and in) water. The feature well is saturated with new ideas about designing with and through water. The Port of Baltimore is open to designing with its dredge materials and has green-lit a pilot project for Mahan Rykiel’s sustainable and social enhancement of the Chesapeake’s Hart-Miller Island. Along the lakeshore, Chicago’s Navy Pier is putting aside its tourist-magnet past, with a redesign by James Corner Field Operations that now attracts native Chicagoans and visitors alike. And a handful of local efforts aim to combat the persistent encroachment of sea-level rise in the vulnerable communities surrounding Hampton Roads, Virginia, one of the most important strategic sites in the United States.

In Water, the EPA’s Campus RainWorks Challenge draws out creative solutions from landscape architecture students for treating and managing stormwater. Four landscape architects discuss the benefits and challenges of working in multidisciplinary firms in Office. In Materials, a quirky relic of an industrial past gets a glittery makeover for a Seattle park. And this year’s Landslide campaign from the Cultural Landscape Foundation calls attention to public landscapes and national monuments in immediate danger of erasure. All this plus our regular Books, Now, and Goods columns. The full table of contents for December can be found here.

As always, you can buy this issue of Landscape Architecture Magazine at more than 700 bookstores, including many university stores and independents, as well as at Barnes & Noble. You can also buy single digital issues for only $5.25 at Zinio or order single copies of the print issue from ASLA. Annual subscriptions for LAM are a thrifty $59 for print and $44.25 for digital. Our subscription page has more information on subscription options.

Keep an eye out here on the blog, on the LAM Facebook page, and on our Twitter feed (@landarchmag), as we’ll be posting December articles as the month rolls out.

Credits: “Pier Review,” Sahar Coston-Hardy; “Dredging Up the Future,” Mahan Rykiel Associates; “The Rising Tidewater,” Sahar Coston-Hardy; “The Biggest Smallest Move,” Mutuus Studio; “It Always Rains on Campus,” Cory Gallo, ASLA; “In the Mix,” Joe Ben; “Not Gone. Yet,” Jeff Katz

Read Full Post »

BY ZACH MORTICE

Texas National Guard and Texas Task Force responders conduct aerial search and rescue in Rockport, Holiday Beach, and the Port Aransas area. Image courtesy of Wikimedia Commons, photo by the Texas National Guard.

An unprecedented storm that dumped more than 50 inches of rain onto Texas over just a few days, Harvey was the kind of hurricane that worsening climate change promises to bring back for a sequel. And if and when that happens, the next round of  recovery and resilience calculus might best begin with the results of the National Science Foundation’s series of research grants dedicated to studying the storm’s effects.

Last month, the agency handed out just over $5 million across 59 research projects prompted by Hurricanes Harvey and Irma, including several that deal with the ecological and landscape fallout of catastrophic storms. Each promises to generate valuable information about flora and fauna left reeling from extreme weather events. But these studies (four of which are detailed here) are even more vital as mile markers down the path toward a future besieged by climate change—either as guidance on forestalling it or living better within its confines.

Anna Armitage of Texas A&M Galveston is studying how the transition from salt marsh wetlands to mangroves might change how hurricanes affect the coast. In Texas, low, marshy wetlands are common, whereas dense mangroves are rare. That balance is shifting, however, as climate change heats up these ecosystems. As mangroves expand their footprint, Armitage (and researchers at Florida International University and the University of Houston) wonders if they might offer coastal ecosystems and human settlement more protection from hurricane winds and rain—at a cost of biodiversity. “It probably doesn’t provide the same value for birds, fish, and shrimp,” she says.

Climate Change Big Picture: If mangroves do offer more protection for coastal ecosystems in a climate of increasingly severe storms, then Armitage says the next question is, “Should we be planting them in restoration sites?” These kinds of “living shorelines,” she says, could be “more resilient, longer-lasting, and nicer looking protection for our communities” than concrete barriers.

Grant amount: $122,935

Paul Montagna of Texas A&M Corpus Christi is studying the inundation of fresh water (via rainfall) into saltwater ecosystems that Hurricane Harvey caused. From initial measurements after the rain, he’s observed increased amounts of dissolved organic matter in these waterways, and has seen (more…)

Read Full Post »

Hurricane Harvey flooding and damage. Image by Jill Carlson (jillcarlson.org) from Roman Forest, Texas, USA [CC BY 2.0], via Wikimedia Commons.

BY BRADFORD MCKEE

FROM THE OCTOBER 2017 ISSUE OF LANDSCAPE ARCHITECTURE MAGAZINE.

Michael D. Talbott wasn’t shy in showing his hand about climate change. For 18 years, Talbott, an engineer, served as the head of the Harris County Flood Control District in Texas until his retirement in 2016. He flatly dismissed any links between climate change and the frequent extreme storms—four of them now since 2015—to hit Harris County, the nation’s third most populated county, and its seat, Houston, the nation’s fourth-largest city. The month he retired, Talbott told a team of reporters with ProPublica and the Texas Tribune that the flood control district did not plan to look at ways climate may be driving the extreme weather that affected Harris County. “I don’t think it’s the new normal,” he said of these weather extremes. (The person to follow him in the job of executive director, Russell A. Poppe, “shares his views,” according to the report.) People who are saying it’s the new normal, Talbott said, have “an agenda” to fight development.

Just as remarkable as Talbott’s denial of climate breakdown was his acquittal of the role that urban development patterns play in worsening or relieving floods. When Hurricane Harvey sat on the region for days in late August, many indignant arguments arose online that Houston’s development habits either most certainly or in absolutely no way helped create the hazards that flooded Texas Gulf Coast neighborhoods from Katy in the west (31 inches of rain) to Beaumont and Port Arthur in the east (47 inches), with Cedar Bayou (more…)

Read Full Post »

Older Posts »