The watershed in your yard: the WaterLA 2018 Annual Report

February 23, 2018 § Leave a comment

waterlacover

Books! OK… well – Reports! Part 3, the final of my recommended reads – the practical, the lyrical and

The Celebratory (also, yes, the Nerdy): Water LA 2018 Report

WaterLA , a project spearheaded by the River Project, champions making watershed management local. Hyper local. Your front yard local. The team there combines community outreach with effective, tested permaculture and landscape design techniques to harvest and retain water in yards and street planting strips. Rain gardens, rain barrels, grey water systems and permeable paving are among the solutions used at multiple sites across LA’s Valley. WaterLA organizers locate community members ready to pitch in and engage in work parties, so that everyone’s working together – building community while building resilience.

This year’s WaterLA Annual Report, then, is a celebration of the gains to individuals, families and our water supply delivered through participation in the project. You see, all those small projects add up to groundwater enhancement, and reductions in peak runoff when it rains – dampening the effect of most floods. The Annual Report quantifies water savings and relates project costs to other, more costly, regional approaches currently in use. Native plant and permaculture folks may be excited to see the conversions of lawns to habitat and foodscapes, community-minded folks may find some inspiration in its projects, and fiscally-minded folks may be encouraged to see creative, affordable solutions to expensive regional problems. A worthy project that would benefit all if it could be applied on a larger scale.

Check it out.

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Restoring Neighborhood Streams: a book that LA could use

February 19, 2018 § 7 Comments

Maker:L,Date:2017-9-16,Ver:5,Lens:Kan03,Act:Kan02,E-Y

Creekfreaks! If you, like me, have resolved to pull away a bit from the netflix-amazonprime-hulu bingefests that serve as a daily nonpharma escapist (are we really living these political times?) opiate, and if maybe you, like me, are rediscovering those magical things called books – then I have a few reads for you! They range from  practical, to lyrical, to celebratory. Personally, I find them all inspirational. In today’s post, I give you –

The Practical: Restoring Neighborhood Streams; Planning, Design, and Construction

Restoring Neighborhood Streams; Planning, Design, and Construction (2016, Island Press), builds on author A.L. Riley’s decades of engagement and effort in the restoring and daylighting of streams in urban and suburban areas. This Creekfreak was especially influenced by Riley and her work. Her previous book, Restoring Streams in Cities, is well dog-eared in my library, and has been an important go-to reference for how to think about stream function and restoration design. This new book provides case studies that illuminate fundamental questions that should be the basis for planning and design of urban stream restoration:

  • Is it physically feasible to restore?
  • Is it financially feasible?
  • Does the public support (I’d add: political will) exist to support land use changes to support a live river or stream?

« Read the rest of this entry »

El Niño Doesn’t Correspond to L.A. River Flooding, La Niña Does

February 29, 2016 § 1 Comment

The interview as it appeared in Friends of the L.A. River's Current News nearly 20 years ago

The interview as it appeared in Friends of the L.A. River’s Current News nearly 20 years ago. Click to enlarge.

Something came up in a recent discussion I was having about current spate of U.S. Army Corps of Engineers make-work projects to degrade the L.A. River in the name of El Niño. If you haven’t seen it, the cutting vegetation and installing dirt-fill barriers along the edges of parts of the river, resulting in nutty bike path detours.

What makes me sad is that the L.A. River generally hasn’t flooded during El Niño years, but instead mostly during La Niña years.

I know this from an excellent interview that FoLAR bird expert Dan Cooper did with climatology professor Richard Minnich back in 1998. I ran excerpts from this in 2010 – a drier La Niña year with some big storms. Below is the whole article.

Talkin’ El Niño
An interview with Dr. Richard Minnich of University of California Riverside, by Dan Cooper

Richard Minnich is a professor of biogeography and climatology in the Department of Earth Sciences at UC Riverside. He has been studying weather patterns and landscape ecology in Southern California and Baja for the past two decades, and recently spoke with FoLAR’s Technical Advisory Board chair, Dan Cooper, in Riverside on March 6, 1998

Dan: Dr. Minnich, let’s begin with the basics – what causes flooding in L.A.?

Rich: Two components are involved, long-term and short-term causes. In the long-term, the ground has to get completely saturated by rain; water hitting dry ground won’t do a thing. Now, in the short term, it’s the hourly rates throughout the day that are important. These rates are what cause catastrophic flooding like we had in 1938.

Dan: What kind of rain are we talking about?

Rich: Ballpark rates, maybe 20 inches in a day in the Transverse Ranges (incl. the San Gabriel and San Bernardino Mtns.).

Dan: Twenty inches in one day? That’s typically what we get in a year.

Rich: In January ’43, it rained 20″ in the mountains, but it was on dry ground so nothing happened. Now downing the coastal plain where everyone lives, all that concrete has led to the potential for flash flood conditions – the water has nowhere to go but into the channels. But even without concrete, major floods are possible – the floods in ’38 occurred before the whole plain was concrete and the rivers were completely channelized.

Dan: So 1938 must have been a big El Niño year…

Rich: Pretty neutral, actually. Neither El Niño nor La Niña conditions were recorded that year. Another neutral year was the winter of 1966-67 – the Transverse Range got 30 inches in December of ’66. The Transverse Range got 30 inches in December of ’66.

Dan: So El Niños don’t coincide with flooding in the L.A. Basin?

Rich: The three spectacular El Niños we’ve seen this century have been 1940-1, 1982-3, and again in the past season [1997-8]. Not one of them caused extensive flooding in the basin.

« Read the rest of this entry »

Hurricane Sandy’s Jersey City Debris Line

November 2, 2012 § 6 Comments

(Note to L.A. folks: this former L.A. resident is now spending time living with my fiance in Downtown Jersey City. I’ll be posting occasional east coast pieces that I think may be interesting to L.A.’s Creek Freaks. For more information on recent changes at LACF, see this earlier post.)

I’ve spent the last month living in Jersey City, a place that was hard-hit by Hurricane Sandy. I am not going to go over all the damage done by Sandy nor the environmental factors likely responsible for second “storm of the century” in two years here… but I wanted to share one small observation about debris – because Sandy’s debris lines resemble those I’ve seen on the L.A. River after storms.

The good news is that my fiance and I are safe and dry, and suffered nearly no serious damage. We did have a day-long blackout, and train service is still out. Neighbors’ places flooded, but our basement stayed dry. At least right here on our street, near Hamilton Park in Downtown Jersey City, we got some strong winds but very little rain. The flooding issues here (and in nearby Hoboken, Manhattan, etc.) were the result of a surge of the waters of the Hudson River. The hurricane pushed water upstream, overflowing the banks and flooding low-lying areas. The surge added to already high-tide conditions on the Hudson – in this area a tidally-influenced river.

Hurricane Sandy’s debris line along a level contour at Jersey City’s Liberty State Park

After the storm, we bicycled around – stretching our legs and checking out downed trees and other damage. We frequently bike at Liberty State Park – a low-lying park along the Hudson, just west of the Statue of Liberty and Ellis Island. The park has great views of the Manhattan skyline. The park contains the Liberty Science Center, located on a small hill. Along the base of the hill (see above photo), we spotted a debris line running along a level contour around the hill. The river pushed its flotsam as far as it could, and then receded, leaving a telltale line.  « Read the rest of this entry »

Upcoming Sediment Removal Meeting: Big Tujunga Dam

June 18, 2012 § 2 Comments

OK, thanks to Rick Grubb, I’m getting this with time for you to put it on your calendars!!

The County of LA is having a joint meeting with the USFS on sediment removal of Big Tujunga Dam.  Dirt’s all the rage here at LA Creek Freak, as you know.  Rick’s also communicated that he wants to see Arroyo Toad back in his region, one of many species that have been impacted by our flood control system.

Here’s the details:

Tuesday, July 24, 2012  6 to 8 p.m.
 
City of Los Angeles – City Council District 2
Sunland-Tujunga Field Office
7747 Foothill Blvd.
Tujunga, CA 91042 (map)
The United States Forest Service (USFS) and the County of Los Angeles Department of Public Works (DPW) will jointly present the Big Tujunga Reservoir Sediment Removal Project.  Information will be provided about the project, the National Environmental Policy Act (NEPA) and the California Environmental Quality Act (CEQA).  The public will have the opportunity to ask questions of the USFS and DPW and comment on the project.  Please plan to join us for this meeting.
For More Information:

Explorations of the Colorado River #4: The Design Studio

June 15, 2012 § 2 Comments

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Done with our touring of the Colorado River (1, 2, 3) and speed-reading about its issues, my 2nd year graduate landscape architecture design studio dove into planning and design solutions for the river.  In the analysis phase, over and over, it was observed that the river ecosystem needed to regain its flooding and sediment dynamics.  And over and over, it was observed that the political, human dimension would almost certainly never allow that to happen -regardless of the ecological desert created at the river’s mouth, and regardless of the obvious and dire future of the watershed due to climate change, population growth, and accumulating pollutants (including radioactive spoils behind reservoirs ya’ll!)

Clearly designing for what humans want usually comes at an environmental cost.  The ecosystem loses!  Even when it’s billed as sustainable, it’s more likely the design is about incrementally less harm to the ecosystem.  So in this studio, designers were challenged with having the Colorado River as their Client.  How do you work to meet human needs within that mandate?  It becomes a much different conversation.  Since many students don’t wish to explore “visionary” projects (visionary of course being the polite synonym for politically impossible, er, unrealistic), the studio was structured so that students could also provide concepts that inch us toward’s the River’s restored state, accommodating more of contemporary human uses while weaning us from an unhealthy allocation system.   This combination of visionary plotting (mwaahaha) and phased steps towards rehabilitation put together make for a nice master plan.

You can read more about the studio and download most of the studio’s presentations at When the River is Client:  Design Explorations of the Lower Colorado River.  I hope you will! There’s some great ideas the students came up with.

 

Sediment Management Strategic Plan Open for Public Comment Until May 30

May 15, 2012 § 6 Comments

20-Year Planning Quantities and Remaining Capacity at Sediment Placement Sites (Source: LADPW)

On the heels of a critical piece of writing by Emily Green on the state of sediment management in Los Angeles (published in the May 14th edition of High Country News), the L.A. County Department of Public Works has completed (as of April) its draft 20-year Sediment Management Strategic Plan for 2012-2032 and is currently soliciting public comments until Wednesday, May 30th. The enormous document (524 pages) is available for download at www.LASedimentManagement.com (the downloadable document entitled “Community Meeting Boards” is a conveniently concise summary of the larger plan). « Read the rest of this entry »

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