Peter’s Take is a weekly opinion column. The views and opinions expressed in this column are those of the author and do not necessarily reflect the views of ARLnow.com
Arlington’s massive July 8 flash flooding — vividly captured by ARLnow.com in videos and photos — exposes yet again Arlington’s failed approach to stormwater planning. That is the emergency Arlington also should have declared last week.
Preliminary County government stormwater-damage estimates set repair costs for public infrastructure, particularly bridges in local parks, at $4.1 million. Actual costs are likely to be much higher. Flood damage to private property will add millions more.
Climate change and sea level rise are here. Wake up, Arlington!
Arlington is in a floodplain
Make Arlington’s flood-prevention approach proactive
Arlington residents are suffering:
“Alexandra Lettow was near tears as she described the losses her family suffered from Monday’s flooding to neighbors and county officials gathered at a home in Arlington’s Waverly Hills neighborhood….
“She and other residents say the county government has taken far too long to study the problem without making any fixes, especially in an era where climate change is triggering more intense and frequent storms….
“Five years ago, several projects to fix Arlington’s aged storm drain system were on the capital improvements program list, only to quietly fall off without explanation. The repairs would have addressed Spout Run stream overflows in Waverly Hills.
Implement mitigation strategies now
County government has chosen not to exercise legal powers that Arlington already possesses to reduce our rapidly growing environmental threats.
Arlington’s land use and development practices — which the County Board controls — exacerbate increases in the speed and volume of stormwater runoff. Whether or not flooded areas lie in FEMA-designated floodplains is immaterial. Board members must acknowledge nature’s latest wake-up call by strengthening County codes and planning to address increasingly unsafe conditions in Arlington.
Slow dramatic increases in impervious surfaces
As Arlington redevelops and adds density, one statistic stands out: between 2001 and 2017, the percentage of impervious surfaces covering Arlington has grown from an estimated 40% to 45%, with 3% of that increase occurring within the past 4 years.
According to County staff, the pace and intensity of redevelopment adds nearly 9 acres of impervious surface area each year–about 29 acres every three to four years, equal to the size of the Pentagon’s footprint.
“Preserving undisturbed vegetative cover during land development is a much more cost- effective approach than destroying these features and having to construct new stormwater management practices to replace the functions they originally provided,” says the Center for Watershed Protection.
Move more aggressively to protect our mature tree canopy
Extensive damage to public parks occurs even as County staff evade the most basic of planning tools by refusing to perform Environmental Assessments for park projects that substantially expand the existing footprint of park infrastructure, add impervious surfaces, and remove large numbers of mature trees.
Mature trees provide significant stormwater volume- and rate-control benefits through soil storage, interception, and evapotranspiration. A tree with a 25-foot diameter canopy and its associated soil can manage 1 inch of rainfall flowing from 2,400 square feet of impervious surface. Interception and evapotranspiration also decrease runoff volume, with larger trees providing exponentially greater benefits than smaller trees. See more details here and here.
Loss of trees and pervious surfaces leads to an increasingly unstable environment for Arlington residents.
Overhaul and reorient Arlington’s plans/analyses
- Global climate change/sea level rise
- Rapid local overdevelopment
To minimize the risk of repeating July 8’s catastrophe, Arlington should adopt stormwater management controls similar to Westchester County’s (NY) Flooding and Land Use Planning guide. See more details here.
Arlington residents deserve a safer and environmentally sustainable future. Passing resolutions decrying climate change won’t cut it.
To address our emergency, Arlington must immediately:
- measure and publish impervious surface increases annually for public and private land
- slow the rate of impervious surface increases
- preserve and grow our mature tree canopy
- reorient stormwater planning and update analyses to confront climate change and measure and weigh development costs
- substantially increase investments in stormwater infrastructure
Peter Rousselot previously served as Chair of the Fiscal Affairs Advisory Commission (FAAC) to the Arlington County Board and as Co-Chair of the Advisory Council on Instruction (ACI) to the Arlington School Board. He is also a former Chair of the Arlington County Democratic Committee (ACDC) and a former member of the Central Committee of the Democratic Party of Virginia (DPVA). He currently serves as a board member of the Together Virginia PAC-a political action committee dedicated to identifying, helping and advising Democratic candidates in rural Virginia.
Image via MWCOG
Everyone has flat screen TVs already so how about a more interesting Black Friday special? The ARLnow Press Club for free, to try out the daily Early Morning Notes email…
There’s not a whole lot going on in Arlington today, save for activity at local shopping centers, so we’re going to fast forward right to the top story countdown. Here…
Statues of Liberty gives thanks this holiday season and grateful for a few things this year.
It’s turkey time. Thanksgiving Eve is upon us and extra revelry can be expected at some local bars tonight, ahead of the holiday. Please be careful on the roads and…
The Optimist Club of Arlington is holding its 76th annual Christmas tree sale!
This year, the tree sale will be held at the Knights of Columbus (5115 Little Falls Road). The lot opens for sales on November 25th. The Optimist Club is selling small and large trees ranging from tabletop size to huge 14 foot tall trees! Wreaths, garlands, tree stands, and White House Christmas ornaments will also be for sale.
100% of all proceeds go towards helping Arlington County youth.
For more information, please visit the Arlington Optimists website at https://optimistclubofarlingtonva.org/.
Art House 7 is a small art studio in Arlington – offering instruction in painting, ceramics, sewing and more. We are looking for kind, dedicated people who love both creating and teaching.
Ceramic Teachers are needed to teach wheel-throwing to adults and 6-12th graders and to teach hand building to elementary grades. Classes have 3-8 students.
Drawing teachers are needed to teach either kids or adults. For kids, we offer cartooning, manga or traditional drawing. For adults, we only offer traditional drawing.
Painting teachers are needed to teach either kids or adults. We offer oil, acrylic or watercolor for adults or teens. All elementary classes use acrylic and tempera.
NCE’s Holiday Concert will bring the finest classical masterpieces and holiday favorites together for the whole family. The festivities begin with Leroy Anderson’s classic “Sleigh Ride” and “Chanukkah Festival”, music from the Nutcracker and by J.S. Bach.
Outstanding Young Artist