Category Archives: Stormwater

Rainfall and aquifers keep drought away from the Kitsap Peninsula

UPDATE: April 24, 2015
Cliff Mass, professor of atmospheric sciences at the University of Washington, says in his blog that it is too early to be predicting severe drought in Western Washington this summer because of possible late-spring rains:

“I believe the media and some local politicians have gotten a bit too worried about our ‘drought.’ We have NOT had a precipitation drought at all….we are in a snow drought due to warm temperatures. The situation is unique and I suspect we will weather this summer far better than expected.”

—–

The word seems to be getting around about the record-low snowpack in the mountains, which could create a shortage of drinking water and even lead to problems for salmon swimming upstream. Read about Gov. Jay Inslee’s expanded drought emergency, issued today, as well as the last update from the U.S. Department of Agriculture.

CK

Kitsap Peninsula and the islands of Puget Sound are in their own worlds, fairly insulated from what is happening in the higher elevations. In these lower elevations, the key to water supplies is rainfall, not snow, and the outlook for the year is normal so far.

As you can see from the charts on this page (click to enlarge), this year’s rainfall has been tracking closely the long-term average. If the rains are light and steady, much of the water will soak into the ground and recharge the aquifers where most area residents get their water. The aquifer levels tend to rise and fall over multiple years, depending on the rainfall.

Hansville

Casad Dam on the Union River, which supplies a majority of Bremerton’s water, filled in January, well ahead of schedule, said Kathleen Cahall, water resources manager for the city. The dam is scheduled for a normal drawdown, and Kathleen said she does not expect any water shortage.

“We filled the reservoir fairly early this year,” she said. “We are looking pretty good for the summer.”

Holly

October, the first month of the water year, was unusually wet, Kathleen said. December precipitation also was high. The other months were fairly normal for precipitation.

Precipitation in the Puget Sound region is expected to be below average for June, July and August, according to models by the NOAA’s Climate Prediction Center. Interestingly, large portions of the Central and Southwest U.S., Alaska and Florida can expect above-average precipitation. See U.S. map.

precip

Streams on the Kitsap Peninsula are fed by surface water flows and shallow aquifers. At the moment, most of the streamflows are near their historical average. That’s not the case for the larger rivers in the Northwest, which rush out of the mountains. Most are well below their normal flows, as shown by the map with the dots.

Low streamflows usually mean higher temperatures and stress for salmon. Low flows also can affect fish passage in some stretches of the rivers while also reducing spawning areas.

Streamflows

While things look fairly good on the Kitsap Peninsula now, things can change quickly. We have different vulnerabilities than elsewhere. Climate-change models predict that rains will grow more intense in the future without changing annual precipitation very much. That means more of the water will run off the land and less will soak in, potentially reducing aquifer levels over time. Managing those underground water supplies will become more and more critical.

Reducing toxics in fish involves politics, maybe more than science

When it comes to eliminating toxic pollution from our waterways and the foods we eat, almost everyone agrees that the best idea is to track down the chemicals, find out how they are getting into the environment and then make decisions about how to handle the situation.

Fish

It’s all common sense until politics comes into play.

If the chemicals are really hazardous and if substitutes for the chemicals are available, then a ban on their use may be the right decision. That has happened with pesticides, such as DDT, and solvents, such as PCBs.

In the case of PCBs, banning these chemicals is not enough, because they were used so widely and continue to hang around, both in old products still in use and in the open environment. Waiting for them to break down and disappear is not a practical approach.

The solution involves conducting chemical detective work to find out how the chemicals are traveling through the environment and ultimately getting into people and animals. Some toxic sinks for PCBs, such as old electrical equipment, can be identified and destroyed before the chemicals begin leaking out. Others, such as contaminated sediments at the bottom of Puget Sound, pose a more difficult problem.

Even when chemicals are banned, the ban is enforced with limits on concentration, below which the chemical can still be used. That’s the case with very low levels of PCBs found in some types of inks and dyes. So when paper is recycled, the PCBs may escape into the environment. We know that PCBs, which mimic hormones and can wreak havoc on the body, can build up in fish, killer whales and humans over time. The question for regulators becomes which sources are the most important to eliminate.

In Washington state, chemical detectives tackle the toxic compounds one at a time, compiling their findings into a chemical action plan. The chemical action plan for PCBs was completed earlier this year. Others have been done for mercury, lead, toxic flame retardants and polyaromatic hydrocarbons.

I bring all this up because Gov. Jay Inslee and Department of Ecology would like to increase the pace of studying potentially toxic chemicals, including finding out what harm they are doing, how they get into the food web and whether alternative chemicals are available.

New chemicals are finding their way into household products, cosmetics and other materials all the time, and studies continue to raise concerns about old chemicals that we have lived with for a long time. Some chemicals are the subject of vigorous and ongoing scientific debate.

The Washington Legislature has been asked by the governor to fund Ecology for up to two chemical action plans per year. The other question before lawmakers is how much authority to give Ecology for banning chemicals and considering whether alternatives are available. These are issues I covered in a story last week for InvestigateWest, a nonprofit journalism group. The story was carried by the Kitsap Sun on Sunday.

This issue of chemical action plans has gotten tangled up with the need for Washington state to update its water-quality standards, required under the federal Clean Water Act. These standards, now under review by Ecology, determine which water bodies in the state are considered clean of toxic substances and which should be labeled “impaired.”

The standards also are used to develop discharge permits for industrial facilities, sewage-treatment plants and occasionally stormwater outfalls. The general implication is that if a discharge from a pipe meets the state’s water quality standards, then it won’t pollute the receiving waters.

Years ago, when most water pollution came from industrial and sewage discharges, the program was successful in making the waters substantially cleaner. More than 100 chemicals remain on the Environmental Protection Agency’s priority pollutants list. All these chemicals are still tested by dischargers, although the vast majority are not detectible in fish caught in Puget Sound. Meanwhile, other chemicals of growing concern are not on the list — so they are not subject to testing, let alone regulatory control.

We now know from various studies that most of the toxic pollution entering Puget Sound comes from stormwater, not discharges from pipes, while other toxics are still sitting on the bottom of Puget Sound. It will take a lot of money and a lot of time to address these sources. The effort is moving in that direction, but funding continues to be debated, including the current session of the Legislature.

Efforts to update the antiquated rules in the Clean Water Act to provide for a more rationale approach have been started and stopped many times. I suspect that environmental advocates fear that with the anti-government mood in Congress the result could be even less-effective controls on pollution — so we live with regulations structured more than 30 years ago.

Gov. Inslee tried to shift the focus of toxic cleanup from the federal approach to the state’s new approach with chemical action plans. While newly proposed water-quality standards are more stringent for 70 percent of the chemicals (PDF 392 kb) on EPA’s list, they would have been 10 times more stringent if his proposal had not changed a key factor in the equation that determines the standards. Going up against environmental advocates, Inslee proposed increasing the cancer-risk rate in the equation from one in a million to one in 100,000.

In other words, if a body of water barely meets the pollution standard for a given chemical, 10 in a million people — rather than 1 in a million — could develop cancer from eating a maximum assumed level of fish from the water. This is the increased lifetime risk from that one chemical.

Everyone agrees that we should do what we can to reduce our risk of getting cancer, and cutting down toxics in fish is an important step. In a two-part series I wrote for the Kitsap Sun in March, I began by describing the risks and benefits of eating fish from Puget Sound and other areas, then I proceeded to talk about the alternative approaches to cleaning up the water.

Increasing the excess cancer risk from one in a million to 10 in a million is worth discussing. That change is not insignificant. But getting to some kind of bottom line is not easy. Keep in mind that the overall risk of getting cancer from all causes is about 433,000 in a million (43.3 percent) for men and 228,000 in a million (22.8 percent) for women, according to the American Cancer Society.

Environmental and tribal officials would like the risk of eating fish to be as low as possible. Many are angered by 15 years of delay by state officials in updating the standards, which were based on poor estimates of how much fish people eat. The newly proposed change assumes a daily consumption of 175 grams (about 6 ounces) of fish, compared to the previous 6.5 grams (about a quarter of an ounce.) Tribal officials say many people in their communities eat more than 175 grams.

On the other hand, businesses operating industrial plants and local governments running sewage-treatment plants are worried about what it will take to comply with new standards if the cancer risk remains at 1 in a million. Increased costs for their treatment systems, ultimately passed along to their customers, are a primary concern.

So far, the regional office of the EPA has made it clear that it does not like the idea of increasing the cancer-risk rate from the level currently used by Washington state and most other states. See the agency’s comments dated March 23 (PDF 6.4 mb). The EPA seems to be taking the approach that if the technology does not exist or is too expensive to reduce chemical concentrations to levels demanded by the new standards, then dischargers should be given a variance or allowed additional time to come into compliance.

It isn’t clear how these issues will be resolved, and there are many technical and legal aspects to be considered. Washington state is on a course to complete its update to the standards by August, when the EPA could release its own plan for bringing the state into compliance.

Eating fish from Puget Sound may be safe — within prescribed limits

For the past few years, I’ve been hearing that Washington’s water-quality standards are grossly out of date, especially when it comes to assumptions about how much fish people eat. Water-quality standards are a set of criteria used to determine when a body of water is “impaired” and to establish limits for discharges from industrial facilities and sewage-treatment plants.

Fish

It was hard to understand how the Department of Ecology could assume that an average person was eating just 6.5 grams of fish a day. That’s less than a quarter-ounce. A typical meal of fish is commonly considered to be eight ounces (226.8 grams). So the assumption was that people were eating one meal of fish every 35 days.

The water quality standards come from an equation established to ensure that if you consumed a certain amount of fish, then your health would be protected. So it would seem logical that if you ate more than that amount, your health might be at risk.

That’s what got me started looking into the nuances of this discussion about water-quality standards and eating fish, especially fish from Puget Sound. The result was a two-part series published Sunday and Monday in the Kitsap Sun (subscription) — Part 1 and Part 2 — and reprinted with permission on the website of Investigate West — Part 1 and Part 2.

I’ll talk about my new relationship with InvestigateWest at the bottom of this page, where I’ll also report on a new study about the protective effects of eating fish even when mercury levels are high.

The first thing to understand about water-quality standards is that the state has been relying on an equation created by the Environmental Protection Agency. That equation resulted in water quality standards used since 1992 across the nation and still in effect for some states (PDF 429 kb). The problem was that the EPA has not updated the nationwide standards, known as the National Toxics Rule, even while the federal agency has been pushing for states to come up with their own standards.

Obviously, the fish consumption rate was no longer valid, if it ever was. State and federal guidelines call for people to eat at least two or three meals of fish each week for health reasons. It is not uncommon for Native Americans to eat a meal of fish or more each day. Protecting the treaty rights of tribal members, which includes safely eating fish from their “usual and accustomed areas,” is a responsibility of the state and federal governments, I’m told.

Fish consumption is not the only issue, however. Other factors in the equation are also out of date. The EPA has updated estimates of toxicity for many of the 100 or so chemicals for which water-quality standards are listed. The weight of a person’s body in the equation also was changed.

Perhaps the most controversial change in the formula, as proposed by Gov. Jay Inslee, is to increase the cancer risk rate for human health from 1 in a million to 1 in 100,000.

I won’t go deeper into the calculation here, since you can read my story for more details, or look into the state’s “Overview of key decisions in rule amendment” (PDF 6.4 mb). But understand that all the assumptions taken together changed the final number for each of the 96 chemicals under review for Washington state. Also note that the vast majority of these chemicals are not even detectible in fish down to parts per billion.

Under Inslee’s proposal, the final number generated by the equation would be the new water-quality standard for a chemical if the number were lower (more protective) than the existing standard. For chemicals in which the number was higher (less protective), the old standard would remain.

The result was that 70 percent of the standards would become more stringent under Inslee’s proposal and 30 percent would stay the same, according to Ecology officials. To see the proposed changes between the old and new standards and whether the change in cancer risk would make a significant difference, check out “Human Health Criteria Review Documents” (PDF 2.9 mb).

Out of the 96 chemicals on the list, two create the greatest concerns for human health in Puget Sound waters. They are polychlorinated biphenyls (PCBs) and mercury. For these chemicals, Inslee’s proposal would keep the water-quality standards the same. This is controversial, but his thinking is that these chemicals are widespread in the environment, and reducing their concentrations in effluent would have little effect on improving the safety of fish.

The governor has proposed a separate planning process with funding from the Legislature to track down and reduce the sources of pollution that cause the greatest health concerns — including some chemicals not on the EPA’s list.

Eating fish is especially important for pregnant mothers and young children, as I described in the first part of the series. Omega-3 fatty acids found in fish tissue are considered essential for the proper development of the brain and neurological system, including memory and performance, as well as other health effects.

Health advisories tend to balance the beneficial effects of eating fish with the risks of getting too much PCBs, mercury and other harmful chemicals. The goal is to choose fish that are relatively low in toxic chemicals, knowing that practically all fish, meats and dairy products contain some contaminants.

New study on protective effects of fish

A new study in the Seychelles, an island country where people eat a lot of fish, suggests that polyunsaturated fatty acids in fish may provide some protection against the health risks of mercury, including neurological problems.

The study was published in the “American Journal of Clinical Nutrition.” The report’s co-author, Edwin van Wijngaarden, associate professor at the University of Rochester’s Department of Public Health Sciences, had this to say in a news release:

“These findings show no overall association between prenatal exposure to mercury through fish consumption and neurodevelopmental outcomes. It is also becoming increasingly clear that the benefits of fish consumption may outweigh, or even mask, any potentially adverse effects of mercury.”

Because the findings are so new, I chose to stick to the standard health advisories in my Sunday story.

Laura Riley, medical director of labor and delivery at Massachusetts General Hospital in Boston, said the advice to limit fish intake may not be warranted after all. But she is not ready to drop the cautionary approach, according to a story by Dennis Thompson of HealthDay magazine.

“More study needs to be done before you can convince me that the fish is actually protective,” she said. “I want to see the data.”

Legislative coverage

As most of you know, I have retired from the staff of the Kitsap Sun, but I’m still writing this blog and occasional stories for the newspaper, including the two-part series this week.

I was recently asked by InvestigateWest, a nonprofit journalism group, to cover some environmental issues being debated in the Washington Legislature. I started this new assignment this week and expect to continue coverage to the end of the legislative session. My work is being funded through a crowd-sourcing website called Beacon. All contributions are appreciated.

Kitsap to receive major funding for stormwater, sewer construction

Washington Department of Ecology is poised to award $229 million in grants and loans for projects that will help clean up waters throughout the state.

Grants

Grants to Kitsap County include $4.2 million for planned stormwater projects, plus another $4.6 million to lay sewer lines designed to protect shellfish beds in South Kitsap’s Yukon Harbor.

This level of funding for a single round of water-quality grants demonstrates that elected officials are serious about cleaning up Puget Sound and other water bodies throughout the state. The Legislature must still approve the funding for the proposed grants and loans.

The Yukon Harbor project is interesting, because Kitsap County officials were able to show that residents of the South Kitsap area would face a severe hardship if forced to pay for a new sewer line and all the connections themselves.

Yukon Harbor has been the subject of pollution identification and correction projects by the Kitsap Public Health District. Fixing septic systems and cleaning up pollution from animals allowed 935 acres of shellfish beds to be reopened in 2008. See Kitsap Sun, Sept. 25, 2008. But recent studies show that the pollution is growing worse again as some systems continue to have problems. Officials say the best answer is to run a sewer line to properties on or near the beach.

The grant will pay for the sewer line and pump station to carry sewage to the Manchester sewage treatment plant. Some money will be used to help residents pay for the costs of connections to their homes.

Without the state grant, officials estimate that each of the 121 property owners would need to pay about $70,000 to complete the project, according to David Tucker of Kitsap County Public Works. Without the “severe hardship” grant, the project probably would not get done.

One nice thing about this project is that residents will not be required to hook up to the sewer, Dave told me. Those who have upgraded or replaced their septic systems or have systems still working well may continue to use their own on-site systems.

“The common infrastructure will be covered by the grant,” Tucker said, “and people can make a choice about whether they want to connect. Everybody’s septic system is in a different state of condition.”

In addition to the $4.6 million grant, the county will receive a low-interest loan of $432,000 for the remainder of the $5 million needed for the project. Design is scheduled to begin this year, followed by construction in 2017 if things go well.

Meanwhile, stormwater projects continue to gain attention, because they can address both pollution and streamflow problems. In Kitsap Countyu, grants were proposed for the following stormwater projects, which require a 25-percent local match:

  • Clear Creek project, known as Duwe’iq Stormwater Treatment Wetland, which will use a $937,000 grant to create a stormwater wetland off Silverdale Way near Ross Plaza to collect water from 18 acres of commercially developed property.
  • Ridgetop Boulevard Green Streets project, which will use $1 million in a second phase of construction to create biofiltration systems in the median of Ridgetop Boulevard in Silverdale.
  • Silverdale Way Regional Stormwater Facility project will use $1.5 million for new stormwater ponds north of Waaga Way to collect stormwater running off steep hills in the area.
  • Chico and Dickerson creeks project will receive $500,000 to complete the second phase of a project to replace two culverts on David and Taylor roads and establish floodplains to take excess water during heavy rainstorms.
  • Bay Shore Drive and Washington Avenue Filterra project will use $277,000 to install 15 Filterra planter-box stormwater filters to reduce pollution coming off streets in Old Town Silverdale.

Kitsap County also was successful in obtaining a low-interest loan of $3.8 million to replace three aging pump stations and upgrade a sewer line on the beach near Manchester. Since the line is part of the Manchester system, the loan will be repaid through sewer fees.

In all, Ecology received 227 applications requesting more than $352 million in grants and loans. Some $143 million went into loans, and $21 million went into grants allocated to 165 projects statewide. About 110 of the projects involve stormwater pollution.

A public meeting on all the projects will be held at 1 p.m. March 4 at Pierce County Library, 3005 112th St. E., Tacoma. Comments will be taken until March 15. For information and a list projects, check Ecology’s website.

Climate change disrupts steady streamflows, adds problems for chinook

Climate change appears to be altering the flow characteristics of Puget Sound salmon streams, and the outcome could be an increased risk of extinction for chinook salmon, according to a new study.

I’ve long been interested in how new housing and commercial development brings more impervious surfaces, such as roads, driveways and roofs. The effect is to decrease the amount of water that infiltrates into the ground and to increase surface flows into streams.

Chinook salmon Photo: Bureau of Land Management
Chinook salmon
Photo: Bureau of Land Management

Stormwater experts talk about how streams become “flashy,” as flows rise quickly when it rains then drop back to low levels, because less groundwater is available to filter into the streams.

The new study, reported in the journal “Global Change Biology,” suggests that something similar may be happening with climate change but for somewhat different reasons.

Climate models predict that rains in the Puget Sound region will become more intense, thus causing streams to rise rapidly even in areas where stormwater is not an issue. That seems to be among the recent findings by researchers with NOAA’s Northwest Fisheries Science Center and Washington Department of Fish and Wildlife:

“Over the last half century, river flows included in our analysis have become more variable — particularly in winter — and these changes are a stronger predictor of chinook population growth than changes in average winter flows or climate signals in the marine environment.

“While other impacts to this ecosystem, such as habitat degradation, may be hypothesized as responsible for these trends in flow variation, we found support for increasing flow variation in high-altitude rivers with relatively low human impacts.”

Joseph Anderson of WDFW, an author of the report, told me that chinook salmon, listed as threatened under the Endangered Species Act, may be particularly vulnerable to dramatic changes in streamflows. That’s because spawning chinook tend to show up before winter storms arrive — when the rivers at their lowest levels. The fish are forced to lay their eggs in a portion of the river that will undergo the most forceful flows once the rains begin to fall.

High flows can scour eggs out of the gravel and create serious problems for emerging fry, Joe said. Other factors may come into play, but the researchers found a strong correlation between the sudden variation in streamflows and salmon survival.

In the lower elevations, where development is focused, flow variability could result from both impervious surfaces on the land and more intense rainstorms. Efforts to infiltrate stormwater into the ground will become even more important as changes in climate bring more intense storms.

Stormwater management is an issue I’ve written about for years, including parts of last year’s series called “Taking the Pulse of Puget Sound.” See Kitsap Sun, July 16, 2014. Rain gardens, pervious pavement and infiltration ponds are all part of a growing strategy to increase groundwater while reducing the “flashiness” of streams.

Other strategies involve restoring rivers to a more natural condition by rebuilding side channels and flood plains to divert excess water when streams are running high.

According to the report’s findings, the variability of winter flows has increased for 16 of the 20 rivers studied, using data from the U.S. Geological Survey. The only rivers showing less variability were the Cedar, Duwamish, Upper Skagit and Nisqually.

The effect of this streamflow variability was shown to be a more critical factor for chinook survival and growth than peak, total or average streamflow. Also less of a factor were ocean conditions, such as the Pacific Decadal Oscillation and related ocean temperature.

Eric Ward, of Northwest Fisheries Science Center and lead author on the study, said many researchers have focused attention on how higher water temperatures will affect salmon as climate change progresses. High-temperature and drought conditions in California, for example, could damage the organs of salmon, such as their hearts.

Salmon swimming up the Columbia River and its tributaries could encounter dangerously warm waters as they move east into areas growing more arid. Some salmon species are more vulnerable to temperature, while streamflow may be more important for others. Coho salmon, for example, spend their first summer in freshwater, which makes extreme low levels a critical factor.

Eric told me that further studies are looking into how various conditions can affect each stage of a salmon’s life, conditions that vary by species. One goal is to build complex life-cycle models for threatened species, such as chinook and steelhead, to determine their needs under the more extreme conditions we can expect in the future.

Culvert replacement costs loom as a budget problem for lawmakers

While funding for Washington’s “basic education” remains a potential budget-buster, some legislators are beginning to worry about a $2.4-billion financial pitfall involving culverts and salmon streams.

Culverts that block significant habitat are represented by dots on the map. Washington State Department of Transportation
Culverts blocking significant habitat are represented by dots on the map of Western Washington.
Washington State Department of Transportation

In 2013, a federal judge ordered Washington state to replace nearly 1,000 culverts that block or impede fish passage along Western Washington streams. The $2.4-billion cost, as estimated by the Washington State Department of Transportation, amounts to about $310 million per biennium until the deadline of 2030.

Nobody has even begun to figure out how to come up with that much money, although the WSDOT has pretty well spelled out the problem for lawmakers.

In the current two-year budget, the state is spending about $36 million to replace fish-passage barriers, according to Paul Wagner, manager of the department’s Biology Branch. That’s not including work on major highway projects.

WSDOT is asking to shift priorities around in its budget to provide $80 million per biennium for fixing culverts.

Meanwhile, Gov. Jay Inslee’s 12-year transportation plan calls for increasing revenues to provide money for various improvements throughout the state, including $360 million for culverts spread over the 12-year period.

BEFORE, where a 5-foot round culvert carried Twanoh Falls Creek under Highway 106. Washington Department of Transportation
BEFORE, a 5-foot round culvert carried Twanoh Falls Creek under Highway 106 into Hood Canal.
Photo: Washington State Department of Transportation

Even if all that funding comes to pass, the state would only make it about halfway to the goal set by the court when the 2030 deadline passes.

Although funding is a serious matter, the effect of fixing the culverts sooner rather than later could boost salmon habitat and help with salmon recovery, transportation officials acknowledge.

Out of 1,982 fish barriers identified in the state highway system, more than three-quarters are blocking “significant” habitat — defined as more than 200 meters (656 feet). That’s from a fact sheet called “Accelerating Fish Barrier Correction: New Requirements for WSDOT culverts” (PDF 4.6 mb).

AFTER, a 20-foot bottomless culvert allows stream to flow more naturally Washington State Department of Transportation
AFTER, a 20-foot bottomless culvert allows the stream to flow more naturally.
Photo: Washington State Department of Transportation

As of 2013, the agency had completed 282 fish-passage projects, improving access to nearly 1,000 miles of upstream habitat. Another 10 projects were added in 2014.

Because the lawsuit was brought by 21 Western Washington tribes, the court order applies to 989 Western Washington culverts, of which 825 involve significant habitat. The case is related to the Boldt decision (U.S. v Washington), which determined that tribes have a right to take fish, as defined by the treaties, and that the state must not undermine the resource.

The court adopted a design standard for culverts known as the “stream simulation” model, which requires that the culvert or bridge be wider than the stream under most conditions and be sloped like the natural channel.

In an effort to gear up for culvert work, the Department of Transportation established four design teams to prepare plans for 34 fish-passage projects for the next biennium and scope out another 75 projects. State officials hope that by having teams to focus on culverts and bridges, design work will become more efficient. Agencies also are working together to streamline the permitting process.

In Kitsap County, the Highway 3 culvert over Chico Creek presents a real challenge for the department, Paul Wagner told me. Everyone recognizes the importance of Chico Creek, the most productive salmon stream on the Kitsap Peninsula. But replacing the undersized culvert with a new bridge would cost more than $40 million — more than the entire budget for culverts in the current biennium.

A culvert under Kittyhawk Drive was removed last summer next to the Highway 3 culvert. Kitsap Sun photo by Larry Steagall
A culvert on Kittyhawk Drive was removed last summer next to the Highway 3 culvert, which continues to affect the flow of Chico Creek.
Kitsap Sun photo by Larry Steagall

“There are a lot of culverts,” Wagner said, “and our challenge is that those on the state highway system are more complicated and involved.”

Not only are the state highways the largest, he said, but they usually cannot be shut down during construction. State highways typically have more complicated utilities and drainage systems, and work may require buying new right of way.

Those are all issues for Chico Creek, which was rerouted when the highway was built in the 1960s. The stream was directed into a new channel parallel to the highway, crossing under the roadway at a 90-degree angle.

The new design would restore the original channel, crossing under the road at a steep angle that makes for a longer bridge. The new route also could involve changing the interchange at Chico Way.

“That project is definitely one we need to get at,” Wagner said, “but it eats up a lot of the money we need for other projects.”

Removal of a county culvert under Kittyhawk Drive has increased interest in removal of the state highway culvert, which lies immediately upstream of the newly opened channel where the county culvert was removed. See Kitsap Sun (subscription), Aug. 26, 2014.

The Legislature will determine how much money will be allocated to culverts and to some extent which ones get replaced first. New taxes could be part of the equation for the entire transportation budget, a major subject of debate this session.

Overall, last year was very warm in Washington state

Last year, Washington state experienced its fifth-hottest year in 120 years of records maintained by the National Oceanic and Atmospheric Administration.

Meanwhile, records for average temperatures were broken in California, Arizona and Nevada, which lived through the highest averages in 120 years. Oregon had just one hotter year on record, while Idaho had three years with higher averages.

Temps

In Washington, the average temperature for the year was 48.4 degrees Fahrenheit, or 2.3 degrees above the long-term average. Hotter years were 1934 with 49.1 degrees; 1958, 49.0 degrees; 1992, 48.7 degrees; and 1998, 48.6 degrees. In 2004, the average temperature was 48.4, the same as this year.

California’s record high was based on an average temperature of 61.5 degrees, with Arizona at 62.3 and Nevada at 53.1. Oregon’s average of 49.5 degrees was exceeded only in 1934, when the annual average was 49.9 degrees.

For the nation as a whole, the average temperature in 2014 was tempered by some fairly extreme low temperatures in the Midwest, stretching into the Mississippi Valley. For the contiguous United States, the average temperature was 52.6 degrees — 0.5 degrees higher than the long-term average and tied with 1977 as the 34th warmest year on record, according to information from NOAA’s National Climatic Data Center.

Despite several months of record and near-record lows across the middle of the country, no state had an annual average that set a record for cold or even ranked among their five coolest years.

For the contiguous U.S. as a whole, last year was the 18th year in a row with an average temperature above the 120-year average. The last year with a below-average temperature was 1996. Since 1895, the temperature has risen an average of 0.13 degrees F per decade.

Precipitation across the contiguous U.S. was 30.76 inches last year, or 0.82 inch above the 120-year average. That makes it the 40th wettest year on record. On average, precipitation has increased by 0.14 inch per decade.

Precip

For Washington state, 2014 was the 16th wettest year on record. The average across the state was 48.73 inches, some 6.7 inches above the 120-year average.

Above-average precipitation occurred across the northern states last year, while the Southern Plains and Central Appalachians experienced below-average conditions.

Drought conditions continue in California, despite near-average annual precipitation. Exacerbating the problem is a three-year rainfall deficit combined with record-high temperatures this past year.

Meanwhile, drought conditions improved across the Midwest and Central Plains, though both improvements and declines were observed in various parts of the Southern Plains, Southwest and Southeast.

Washington state had its fourth-wettest spring on record, while Kansas had its third-driest spring. Other seasonal conditions can be found on the NCDC’s “National Overview” for 2014. The “Climate at a Glance” page can help you break down the data by state and time period.

Global data and analyses from NCDC are scheduled to be released tomorrow.

Five big projects planned for the Skokomish River

The Army Corps of Engineers is moving forward on a $40-million restoration program along the Skokomish River, as I mentioned in Water Ways last week.

According to Rachel Mesko of the Army Corps of Engineers, two major projects have been dropped from the “tentatively selected plan” for the Skokomish, which flows into the south end of Hood Canal. That leaves five major projects to advance forward for a likely recommendation to Congress.

Skok watershed

Rachel presented a status report on the program during a recent meeting of the Skokomish Watershed Action Team.

It’s hard to remember how long I’ve been writing about the Army Corps of Engineers’ involvement in the Skokomish. So I looked it up. The agency completed a flood analysis in 1988, considered dredging options in 1995 and began work on the current “general investigation” in 2000.

Before I talk about the projects being proposed, I’d like to recall what is at stake in the Skokomish, often cited as the most frequently flooded river in Washington state. Many people believe that the restoration of Hood Canal, a gem of an ecosystem, cannot be successful without first fixing the Skokomish, where individual restoration projects have been underway for years.

Here’s a brief description of the problems from the feasibility report on the Skokomish River Basin Ecosystem Restoration (PDF 5.3 mb).

“High sediment load, reduced flows and encroachment on the floodplain by man-made structures are causing continued degradation of natural ecosystem structures, functions, and processes necessary to support critical fish and wildlife habitat throughout the basin.

“The decline in populations has resulted in the listing of four anadromous fish species under the Endangered Species Act — chinook salmon, chum salmon, steelhead, and bull trout — that use the river as their primary habitat.

“The impaired ecosystem has adversely affected riverine, wetland, and estuarine habitats that are critical to these and other important fish and wildlife species such as bears, bald eagles and river otters to name a few.”

Let me list some of the specific problems:

  • Historical removal of large woody debris has simplified the stream, wiping out pools, eliminating places for young fish to hide and reducing nutrients, which feed aquatic insects and support an entire food web.
  • Logging along the river has eliminated the supply of large woody debris, the shade to cool the stream and the overhanging vegetation, a key part of the food web. Logging also has increased erosion which prevents new vegetation from taking hold, smothers salmon eggs and fills in pools, where salmon can rest.
  • Levees built to protect farmland from flooding halted the natural movement of the river, known as channel migration, and prevented the formation of new habitats.
  • Logging upstream in the South Fork of the Skokomish River and Vance Creek increased erosion and movement of sediment into the lower river, cutting off fish access to side channels, wetlands and other aquatic habitats.
  • The Cushman Dam Project blocked 25 percent of the mainstem habitat and 18 percent of tributary habitat available for salmon in the North Fork of the Skokomish River. Reduced flows below the dam increased sedimentation in the lower Skokomish. As a result, about a mile of the river dries up about two months each summer, blocking salmon migration.
  • Highways 101 and 106 disrupted natural floodplains that can be used by fish to find food and to escape high flows and then find their way back to the river.

Five projects designed to reduce these problems are being proposed by the Army Corps of Engineers:

Car body levee removal: This levee was built with old cars at the confluence where the North Fork flows into the mainstem of the Skokomish. Some 5,000 feet of the levee would be removed. A small channel would be created to allow water from the mainstem to flow into the North Fork and return at the existing confluence. Large woody debris would help direct water into the channel. Estimated cost: $7.5 million.

Large woody debris: Upstream of the confluence with the North Fork, large woody debris would be installed. Large clusters of trees with root wads, as well as some single trees, would be placed between river mile 9 and 11, as measured from the estuary in Hood Canal. Estimated cost: $3.2 million.

Setback levee at river mile 9: The existing levee would be breached in four locations, and a new levee would be built some 200 to 300 feet farther away. The levee would allow for minor over-topping but would not increase the flood risk. Estimated cost: $2.4 million.

Grange levee: Larger breeches are planned for the levee near the Grange hall at river mile 7.5 to 8, compared to the levee at river mile 9. A new levee, up to 10 feet tall and 2,900 feet long, would be constructed 1,200 feet farther back with no increase in flood risk. Locations are still under discussion. Estimate cost $3.3 million.

Side channel connection near Highway 101: An old remnant channel between river mile 4 and 5.6 would be restored to take water from the mainstem at high flows. Woody debris would help define the inlet and outlet to the channel, which would become a ponded wetland at low flows. Estimated cost: $3.1 million.

The costs above were taken from the feasibility study and do not include design, planning and related costs.

You might note that the River Mile 9 levee and the Grange levee fit the concept of “Floodplains by Design,” an idea supported by The Nature Conservancy and funded by the Washington Legislature with $44 million. Check out the Associated Press story.

After discussions with nearby property owners, two projects were removed from the preliminary list. They involve excavation work on both Hunter and Weaver creeks to restore the tributaries to more nature flows.

Rich Geiger, engineer for Mason Conservation District, said the Skokomish restoration program seems to have wide support among landowners in the Skokomish Valley as well as among interest groups, including the Skokomish Watershed Action Team. As a result, he expects that the project will maintain momentum all the way to Congress.

“It is fairly rare to have a watershed working together,” Rich said at the SWAT meeting. “The ones that are difficult are when you have two parties, one saying ‘yes’ and other saying, ‘Don’t you dare.’

“There is support (for the Skok project) through the Corps chain of command and all the way up to the national level,” he added.

If things go well, a final plan for the Skokomish could be ready by late next summer, according to Rachel Mesko.

By the way, I would like to publicly thank the SWAT for the “certificate of appreciation” I was given for my reporting on Skokomish River through the years. It’s an honor to be associated with this group of men and women who are fully committed to seeing the Skokomish River restored to a healthy ecosystem.

Coho show off their jumping skills, but they can’t swim up a pipe

Prompted by stream biologist Jon Oleyar. my grandson, Kevin Jeffries, and I visited Gorst Creek today during a break in the heavy rains.

As I reported in Water Ways yesterday, Jon, who counts salmon for the Suquamish Tribe, had observed an unusual number of coho salmon swimming upstream in Gorst Creek.

Because of heavy rains, the creek was running high and very fast this afternoon, and the waters were a muddy brown. In fact, the sediment load was so heavy that we spotted only a few fish swimming upstream. We suspected that a lot of them were hunkered down in deep pools, waiting for the flows to decline and the stream to become more passable.

Although we did not see a lot of fish, it was exciting to watch coho salmon trying to jump up into an outlet pipe that discharges water from the salmon-rearing raceways in the park. Coho, wearing their spawning colors of red, are known as jumping fish, but these guys were going nowhere fast. Check out the video on this page.

I’m looking forward to returning to the stream after the rains decline and the waters clear up a little bit. The coho may or may not be gone by then, but Jon expects that we should be able to see chum salmon in Gorst Creek at least until Christmas.

Kitsap rains: not too much, not too little for salmon and aquifers

The on-and-off rains over the past two weeks are nearly perfect for both spawning salmon and for recharging shallow groundwater supplies, experts say.

Chum salmon in Chico Creek. Kitsap Sun photo
Chum salmon in Chico Creek.
Kitsap Sun photo

For October, total rainfall ranges from about 5 inches at Hansville to 12 inches at Holly, according to rain gauges managed by the Kitsap Public Utility District. Fortunately, those rains have not been delivered to us in only a few days.

The intermittent nature of October rains has allowed the streams to maintain their flows without flooding. They’ve also allowed infiltration into the ground without excessive runoff.

“It is the good kind of rain,” said Bob Hunter, interim manager of Kitsap PUD. “We’ve had a couple of days when we’ve had 2-plus inches, but we haven’t seen the streams flash.”

In other words, the streams have not risen excessively fast. Bob attributes that to how dry the ground was before the rains began. Soils were able to absorb much of the early rainfall before stormwater runoff began to increase. Pauses between the rainstorms allowed more of the water to soak into the ground.

“It just goes to show you the variability that we have around here,” Bob told me.

October marks the beginning of the 2015 “water year.” Although we are just a month into the start of the year, the rainfall has been closely tracking all-time highs at some rain gauges — including Holly, which has been monitored since 1999. (See charts below.)

Meanwhile, the rain pattern in October was nearly perfect for salmon, said Jon Oleyar of the Suquamish Tribe, who walks the East Kitsap streams to count migrating salmon as they arrive.

“It seems like we’ve had storms coming in every couple of days, so they are not right on top of each other,” Jon said. “That gives the streams some time to recede.”

When there is not adequate flow, the salmon often wait for the streams to rise. On the other hand, too much flow can wash salmon eggs out of the streambed.

Last week’s rains got the chum salmon moving into most of the East Kitsap streams, Jon told me.

“I checked Chico Creek on Wednesday, and there were almost 11,000 fish in there and going up about as far as they can get,” he said.

A good escapement for the Chico Creek system is between 12,000 and 15,000 chum, and there is still more than a month left — assuming a typical timing of the run, he said. But things are looking a little different this year, he noted, and the bulk of the run may have arrived already.

One indication that timing could be different this year is that Gorst Creek already has a fair number of chum salmon — perhaps 500 — yet the Gorst Creek run usually comes in later and continues well into December.

Is it possible that all or most of the salmon runs are coming in early? It’s a question that only time will answer.

Jon told me that he’s a bit water-logged at the moment, trying to count fish in the rain with the streams running high.

“I’m pretty happy about it,” Jon said. “I have my fish up where they need to be, but it’s just hard to count them right now. If you’re a fish, this is really working for you.”

In the charts below, found on the Kitsap PUD’s website, you can see that October’s rainfall has been tracking the record high rainfall at these stations. Of course, the “water year” has barely begun, so anything can happen. (Click on images to enlarge.)

Rain-Holly

Rain-CK

Rain-Hansville