Category Archives: Stormwater

Floodplains by Design solves problems through careful compromise

Water

The water understands
Civilization well;
It wets my foot, but prettily,
It chills my life, but wittily,
It is not disconcerted,
It is not broken-hearted:
Well used, it decketh joy,
Adorneth, doubleth joy:
Ill used, it will destroy,
In perfect time and measure
With a face of golden pleasure
Elegantly destroy.

— Ralph Waldo Emerson (1803-1882)

Floodplains by Design, a new program that combines salmon restoration with flood control, is a grand compromise between humans and nature.

I got to thinking about this notion while writing a story for the Encyclopedia of Puget Sound regarding the need to protect and restore floodplains in order to improve habitat for salmon and other species. The story is part of a series on Implementation Strategies to recover Puget Sound. Check out “Floodplain projects open doors to fewer floods and more salmon.”

Floodplains by Design is an idea born from the realization that building levees to reduce flooding generally causes rivers to rush faster and flow higher. Under these conditions, the rushing waters often break through or overtop the levees, forcing people to rebuild the structures taller and stronger than before.

Flooding along the Snoqualmie River
Photo: King County

Salmon, which have evolved through untold numbers of prehistoric floods, were somehow forgotten in the effort to protect homes and farmland built close to a river. Absent the levees, floodwaters would naturally spread out across the floodplain in a more relaxed flow that salmon can tolerate. High flows, on the other hand, can scour salmon eggs out of the gravel and flush young fish into treacherous places.

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New brochure alerts landowners to landslide hazards and what to do

Geology experts in Washington and Oregon have produced an easy-to-read brochure that can help people understand landslide risks, the underlying geology of slides and precautions that could avoid a disaster.

I have written a lot of words about landslides through the years, often relating stories of people involved in a catastrophic slope failures. But this new publication excels as a concise discussion of what people need to know if they live on or near a steep slope.

After the Oso landslide in the Stillaguamish Valley three years ago, I wrote a piece in the Kitsap Sun to help residents of the Kitsap Peninsula understand the risks they could be facing. Now I can point people to this graphically rich pamphlet, called “A Homeowners Guide to Landslides for Washington and Oregon” (PDF, 3.8 mb). It was produced by the Washington Department of Natural Resources and the Oregon Department of Geology and Mineral Industries.

“Our job is to understand Washington’s complex geology and how it impacts the people who live here,” Washington State Geologist Dave Norman said in a news release. “We want to make sure we put that information into their hands.”

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Learning to create small habitats in Kitsap, Thurston, Pierce counties

Marianne Jackson, a personal trainer and yoga teacher, lives in a fairly typical residential neighborhood in Des Moines, about halfway between Seattle and Tacoma. Marianne has been interested in gardening for years. Recently, however, she decided to up her game by creating a backyard wildlife habitat.

A flowering currant in Marianne Jackson’s garden is a native plant that is good for birds. She says hummingbirds love it.
Photo: Marianne Jackson

That’s when Sarah Bruemmer, a habitat steward coordinator for the National Wildlife Federation, entered Marianne’s life. Sarah knows how to turn small outdoor spaces — or large ones, if available — into functioning habitats. She coordinates a training program that addresses issues from soils, gardening and invasive plants to birds, butterflies and water quality.

Sarah’s month-long program, which includes weekly classes with two Saturday field trips, is scheduled for April in Kitsap and Thurston counties and May in Pierce County. Only a few seats remain for the Kitsap training to be held in Silverdale.

Marianne, 56, took the course last year and came away with a much deeper knowledge of the ecosystem. She had already ripped out her grassy lawn years ago to create what became a series of connected gardens, but the classes taught her how native plant species and water features can help native birds and butterflies.

“I already had the interest,” she said. “Now I have a lot more knowledge that I can put to use. I’m planning to get my yard certified.”

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Hope is alive for restoration of Puget Sound shellfish beds

Officials in Washington state’s Shellfish Program have identified a clear pathway to meet a state goal of restoring 10,800 net acres of shellfish beds to a harvestable condition by 2020.

The 10,800-acre target, established by the Puget Sound Partnership, was considered overly ambitious by many people when the goal was approved in 2011. Many still believe that the shellfish restoration effort will go down in flames, along with other goals, such as increasing chinook salmon and killer whale populations by 2020.

In reporting on the Shellfish Implementation Strategy, a document still under development, I’ve learned that the goal is within reach if enough of the ongoing recovery efforts around Puget Sound continue to make progress. Please check out my latest stories “Bringing the shellfish back” and “Closing in on the magic number in Samish Bay,” both published in the Encyclopedia of Puget Sound.

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Petition seeks to revoke Department of Ecology’s clean-water authority

Citing pollution problems in Puget Sound, an environmental group is asking the Environmental Protection Agency to revoke Washington state’s authority to enforce the federal Clean Water Act.

Northwest Environmental Advocates, based in Portland, says a review of 103 discharge permits issued by the Washington Department of Ecology shows a failure to control nitrogen pollution. Excess nitrogen reduces oxygen levels in the water and triggers algae blooms, resulting in serious problems in Puget Sound, according to a petition submitted to the EPA.

“Ecology determined that over 80 percent of the human sources of nitrogen in Puget Sound comes from cities and towns, but it continues to issue discharge permits as if it were completely ignorant of these facts,” Nina Bell, the group’s executive director, said in a news release.

“It’s just flat out illegal to issue permits that contribute to harmful pollution levels,” she added. “These permits are the walking dead, existing merely to create the impression that the state is doing its job to control water pollution when it is not.”

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Stream ‘bugs’ will help guide funding for future stream restoration

One of the goals established by the Puget Sound Partnership is to improve freshwater quality in 30 streams throughout the region, as measured by the Benthic Index of Biotic Integrity, or B-IBI.

Benthic invertebrates range in size from those easily seen with the naked eye to those that cannot be spotted without the use of a microscope. Photo: C. Dunagan
Benthic invertebrates range in size from those easily seen with the naked eye to those that cannot be spotted without the use of a microscope. // Photo: C. Dunagan

Simply described, B-IBI is a numerical measure of stream health as determined by the number and type of bottom-dwelling creatures that live in a stream. My latest article published in the Encyclopedia of Puget Sound describes in some detail how this index works. Here’s the basic idea:

“High-scoring streams tend to have a large variety of ‘bugs,’ as researchers often call them, lumping together the benthic species. Extra points are given for species that cannot survive without clean, cool water. On the other hand, low-scoring streams are generally dominated by a few species able to survive under the worst conditions.”

Because benthic invertebrates have evolved over time with salmon and other fish, many of these important “bugs” are primary prey for the fish that we value highly. Said another way, “healthy” streams — as measured by B-IBI — tend to be those that are not only cool and clean but also very good habitats for salmon.

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Stormwater projects in Silverdale offer hope for a degraded Clear Creek

Detailed planning and design, followed by thoughtful construction projects, have begun to tame the stormwater menace in Clear Creek, an important salmon stream that runs through Silverdale in Central Kitsap.

A renovated stormwater pond at Quail Hollow near Silverdale includes a walking trail and enhanced wildlife habitat. Photo: C. Dunagan
A renovated stormwater pond at Quail Hollow near Silverdale includes a walking trail and enhanced wildlife habitat. // Photo: C. Dunagan

Stormwater has been identified as the greatest pollution threat to Puget Sound. In Kitsap County, many folks believed that the dense development pattern in and around Silverdale has doomed Clear Creek to functioning as a large drainage ditch for runoff into Dyes Inlet.

But reducing stormwater pollution is not beyond the reach of human innovation, as I learned this week on a tour of new and planned stormwater facilities in the Clear Creek drainage area. The trick is to filter the stormwater by any means practical, according to Chris May, director of Kitsap County’s Stormwater Division and a key player in the multi-agency Clean Water Kitsap program.

Projects in and around Silverdale range from large regional ponds of several acres to small filtration devices fitted into confined spaces around homes and along roadways.

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What comes next under water-quality standards imposed by the EPA?

The Environmental Protection Agency approved new water-quality standards for Washington state this week, overriding a plan approved by Gov. Jay Inslee and the state Department of Ecology.

It was a rare posture for the EPA. Now the state will be pressured to appeal the EPA standards to federal court. Cities and counties as well as some industrial organizations are clearly unhappy with the EPA’s action, while environmental and tribal representatives got most of what they wanted.

The basic structure of polychlorinated biphenyls, where the number and location of chlorine atoms can vary.
The basic structure of polychlorinated biphenyls, where the number and location of chlorine atoms can vary.

The EPA action is especially unusual, given that this state is known for some of the strongest environmental regulations in the country. After much dispute, Ecology finally agreed to much higher fish-consumption rates without increasing the cancer-risk rate, leading to more stringent standards for many of the chemicals. But Ecology had its own ideas for the most troublesome compounds with implications for human health. They include polychlorinated biphenyls (PCBs), arsenic and mercury. For background, see Water Ways, Oct. 18, 2015.

Some news reports I saw this week said EPA’s action will lead to salmon that are safer to eat. But that’s not at all certain, and opponents say it is unlikely that the revised limits on chemical pollution will have any practical effect on compounds that affect human health.

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Understanding how rogue chemicals affect people and marine life

Scientists are just beginning to understand the profound impact that synthetic chemicals are having on humans and other animals in the Puget Sound region.

As a major predator, harbor seals accumulate more than their share of toxic chemicals, including flame retardants. A legal ban on certain chemicals seems to be reducing levels in their tissues. Photo: hj_west, www.flickr.com/photos/hjwest/
As a major predator, harbor seals accumulate more than their share of toxic chemicals, including flame retardants. A legal ban on certain chemicals seems to be reducing average levels in their tissues.
Photo: hj_west

My latest story for the Encyclopedia of Puget Sound addresses so-called chemicals of emerging concern. Please check out “Concerns rise over rogue chemicals in the environment.”

While talking to researchers and investigating a variety of biologically active compounds, I began to realize the complexity of the body’s internal chemistry. I thought I knew something about the endocrine system, but I never fully considered how one hormone can trigger responses in multiple organs, including the release of additional hormones, even creating feedback loops.

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Annual salmon watching is now on the fall agenda

Early and continuing rains in October have increased streamflows and brought coho and chum salmon into their spawning territories ahead of schedule this year.

Dickerson Creek
Dickerson Creek is undergoing restoration at the new bridge on Taylor Road. // Photo: Dunagan

I was out and about today, taking a look at some of the streams in Central Kitsap. I couldn’t pass up the chance to enjoy the sunny and warm weather, and I was pleased to encounter a lot of other folks doing the same thing. Adults of all ages, some with children, were out looking for the elusive salmon. That’s not something I ever saw 10 years ago while making my rounds to public salmon-viewing spots.

I believe the growing interest in salmon may result from ongoing promotions of salmon watching by governmental and volunteer organizations, as well as the news media. Why shouldn’t we go out to watch salmon swimming upstream and possibly, if one is lucky, catch a glimpse of spawning behaviors? After all, we live in one of the best areas for this enjoyable pastime.

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