The Great Mussel Rescue of 2022

by Dan Haug | Oct 28, 2022

Updated 2022-11-14 with final count: 53 mussels rescued, 13 of them threatened species!

Three fun facts about freshwater mussels

Mussels keep streams clean. A mature freshwater mussel can filter 10 gallons of water a day, gobbling up algae and other microscopic organisms in the water. As this video shows, mussels can clean up muddy water, but too much silt in the water can bury them alive or clog their gills.
Mussels can hitch-hike long distances. Some mussel mamas have a special lure to flag down passing fish so that the baby mussels (glochidia) can hitch a ride as a parasite on the fish’s gills!
Mussels are in trouble. The United States is a hotspot for freshwater mussel biodiversity but many species were nearly wiped out by over-harvest for the button industry, dams and habitat loss, and too much silt in the water. For more about freshwater mussels, watch this PBS video.

Two state-threatened species of mussels have been found in Ioway Creek–the cylindrical papershell (Anodontoides ferussacianus) and the creek heelsplitter (Lasmigona compressa). An erosion control and stream restoration project is planned at Brookside Park in Ames, so the Department of Natural Resources required that they be relocated before construction begins. Mussel expert Brett Ostby of Daguna Consulting was hired to lead the effort, but finding all the mussels hiding in a patch of streambed is slow work, and there was a kilometer of stream to cover. We needed volunteers…

Volunteers collecting mussels in Ioway Creek

I had been planning volunteer events to monitor water in Ioway Creek and its tributaries and to pick up trash in West Indian Creek, but low water levels forced us to cancel. Low water levels make it easier to find mussels, so Prairie Rivers of Iowa and our partners at the Outdoor Alliance of Story County switched gears and recruited 12 volunteers to help. Five of the volunteers were students at Ames High School, where I’d been talking with earth science classes about runoff and water quality. Teachers Collin Reichert and Kean Roberts were kind enough to lend us some chest waders — essential gear if you’re planning to spend an hour or more in 45-degree water!

Since mussels can be buried in sand, we had to feel around or dislodge them with rakes. The three guys from Daguna Consulting used wet suits and snorkels to tackle some of the deeper pools. Volunteers helped when they were able over a three-day period. It’s slow, tedious work, leaving no stone unturned, but I can hardly complain about spending time in nature on a beautiful day. Ioway Creek has plenty of wildlife to see if you look long enough. I saw birds including a kingfisher, reptiles including a softshell turtle and northern water snake, and invertebrates including a hellgrammite, crayfish, and fingernail clams. For some of the students, being in the creek and seeing these critters was a new experience.

Mussels were fewer and farther between than we expected. We relocated 53 mussels (representing 5 species) to a stretch upstream of the park, where they seem to be more abundant.

8 Cylindrical papershell (Anodontoides ferussacianus)
5 Creek Heelsplitter (Lasmigona compressa)
1 Fragile Papershell (Leptodea fragilis)
37 Lilliput (Toxolasma parvum)
2 Pocketbook (Lampsilis caridum)

Compare that to the results of a DNR mussel survey this year in the Iowa River near Coralville (which found 28 species, and was catching an average of 22 mussels every hour) and it’s clear that the ecosystem in Ioway Creek is out of balance. Hopefully, this project will improve in-stream habitat so the populations grows. Our thorough search ensures that few will be lost during construction.

The Real Meaning of WOTUS

by Dan Haug | Oct 5, 2022

Last week at the Iowa Water Conference, I attended several sessions that illustrated of the consequences of paving over wetlands and streams.

This week, the Supreme Court is revisiting the question of which wetlands and streams are subject to the jurisdiction of federal agencies–another chapter in the Waters of the United States (WOTUS) controversy. The importance of this legal back and forth for agriculture and water quality has been greatly exaggerated. In practice, the definitions haven’t changed much and it mostly concerns Section 404 of the Clean Water Act: if your construction project involves running a bulldozer or backhoe in a stream or wetland, do you need to get a permit from the US Army Corps of Engineers?

UPDATE: The court’s decision on Sackett v. EPA was released in May of 2023. We discussed the ruling and shared some illuminating passages from the legal opinions in this post.

Prairie Rivers of Iowa generally avoids getting mixed up in politics and policy, but maybe I can shed some light on what’s at stake and what isn’t. Last week I was at the Iowa Water Conference with colleagues from Story County and the City of Ames to give a presentation on our locally-led water monitoring program. While at the conference, I attended several sessions that illustrated of the consequences of paving over wetlands and streams. Shout out to Michael Jansen of Strand Associates, Steve Brown from the City of Dubuque, and Tim Olson and Ryan Benjederdes of Bolton & Menck for sharing their projects.

In Dubuque, a creek called Bee Branch had been put into a pipe to build a business district and a residential neighborhood, but had the habit of backing up into the streets and basements whenever the Mississippi River was high and there was a summer downpour. What used to be the 100 year storm is now the 50 year storm, so the complaints from residents were getting louder and more frequent. The solution was to daylight the creek and turn it into an amenity. The Bee Branch Greenway is beautiful and very thoughtfully designed, but it took a decade to build and cost $250 million.

In a Minneapolis suburb, a wetland complex had been paved over for commercial development prior to the passage of the Clean Water Act. The water the wetlands used to store was regularly backing up into the streets: a 4 inch rain caused 3 feet of flooding). A new transit line opened up some redevelopment opportunities, but the water the wetlands used to store had to go somewhere, so they put it in massive underground chambers. The project included a lot of clever engineering to detain and treat the water within a limited footprint, and a lot of innovative construction to get it installed while keeping the restaurants and stores open, but it came at a cost of $10 million.

A highlight of the conference was seeing Tracy Peterson (who’s helped us with many watershed projects and events) get an award. As an engineer for the City of Ames, Tracy regularly deals with the consequences of past development on rivers in the City of Ames, overseeing projects to reduce flooding on South Duff, clean up runoff on Welch Ave, and control erosion on the South Skunk River and Ioway Creek.

Bottom line, when developers are allowed to pave over wetlands and streams without limit and without mitigation, we pay for it later with flooded basements or big infrastructure projects. There’s a debate to be had over what level of government has the authority to regulate construction in wetlands and waterways and how we should balance the competing interests, but that’s not the debate we’ve had. For a decade, some politicians and interest groups have been claiming that an expanded definition of WOTUS is a threat to farmers. I don’t get it.

In a previous job, I had the pleasure of reading boxes of old permit files and learning about what kinds of activities require a federal dredge/fill permit or state water quality certification. As I recall, farming activities are exempt except for cranberry bogs (this was Wisconsin) and some new drainage ditches. Best I can tell, this issue isn’t really about farmers, it’s about developers. It’s not really about water quality, it’s about flash flooding. It’s not really about the EPA, it’s about the US Army Corps of Engineers (correction: the USACE issues the permits, but the EPA enforces violations). It’s not just about federal overreach, it’s also about state under-reach.

This election season, remember the true meaning of WOTUS.

Autumn’s Spooky Species: How to Appreciate Misunderstood Wildlife this Season

by Jessica Butters | Oct 3, 2022

These Halloween icons are in reality quite charming, and provide us with valuable services!

The crisp October air brings the excitement of changing leaves and a changing season. While making yards and gardens cozy for wildlife braving the winter is a common discussion this time of year, we are focusing on what kinds of important wildlife you may notice this month! With Halloween around the corner, now is the perfect time to better understand some of the spooky (or maybe not-so-spooky-after-all) animals that you may see in autumn!

Owls

Soon leaves will fall to the ground, making it easier to spot this inquisitive bird of prey. The barred owl in particular hoots in a pattern that sounds like they’re asking “Who cooks for you? Who cooks for you all?”. I think we all wish the answer to that question was “someone else”. While this call at night may sound spooky, barred owls have some endearing qualities. This species mates for life, and lets its young stay near home longer than other species – up to six months! You can look for barred owls in Ames in mature tree stands near a water source. To help all owls, try to stop putting out rodent poison; owls eat rodents, and can consequently become sick from the poison. Healthy owls in your area may mean natural rodent control for you! Additionally, some owls utilize nesting boxes; you can contact Wild Birds Unlimited here in Ames to learn more!

Bats

Could we truly celebrate Halloween properly this month without bats? From décor to Dracula, this fuzzy animal’s image will be seen everywhere this month. However, the animals themselves will be seen less and less. Bats remaining in Iowa during winter are now looking for cozy spots for hibernation, especially as the amount of insects declines this month. Bats are great at gobbling down mosquitos and other pesky insects (the bat pictured here can eat 600 insects in an hour!), and their babies are called “pups”! These animals are much more helpful and cute than they are spooky.

To help bats, consider building a bat box for fun! If a bat gets in your home, remember that they will not fly into you; they are expert navigators and will avoid you while they try to fly up and away. Calmly open a door or window for it to fly back outside and stand still at a distance until it leaves. If it can’t find the exit, call the Iowa Wildlife Center (515-233-1379) or other wildlife societies to have experts remove the bat in a humane way.

Spiders

Many people try their best to be open-minded towards insects, but most find spiders hard to appreciate (spiders are not technically “insects” – they’re “arachnids”). During late summer and early fall, you may see spiders more often, but don’t panic. They are not “coming in” to escape cool temperatures. Most spiders you see indoors are specifically adapted to survive indoors, where there is little food and water. Outdoor spiders are not well-adapted to live inside our homes, and are not trying to sneak in; their food is outside, and that’s where they’ll stay! If they accidentally wander in, they will not survive more than a few days, and won’t reproduce. What you are probably seeing are indoor spiders that have been inside this whole time, not bothering you at all.

This time of year is beautiful in Iowa, and it’s the perfect time to find ways to appreciate the beauty of living things that continue to serve our needs, despite our fear of them. Happy Fall!

Household Tip: To truly understand any animal/insect you see in or around your house, look up information from science-based sources, such as university extension websites, rather than pest-control companies. Pest-control websites are likely to present alarming information, possibly to encourage use of their services. A majority of the time, whatever you are seeing is not only common, but harmless as well.

Links in Text:

Leave The Leaves! Xerces Society blogpost, by Justin Wheeler:

https://xerces.org/blog/leave-the-leaves

Wild Birds Unlimited, Ames (515-956-3145) Website:

https://ames.wbu.com/?utm_source=google&utm_medium=local&utm_campaign=localmaps&utm_content=279

Woodworking for Wildlife, Iowa State University, link to PDF file on how to build a bat box:

https://naturalresources.extension.iastate.edu/wildlife/woodworking-wildlife

PRI Iowa Water Quality Specialist Awarded as a New Voice in Water Quality

by Mike Kellner | Aug 31, 2022

The Conservation Learning Group, a think tank based at Iowa State University Extension and Outreach has announced the 2022 winners of its New Voices in Water Quality Awards. Prairie Rivers of Iowa Water Quality Specialist Dan Haug is one of 15 Iowans being awarded. Haug was recognized for his excellence in youth and/or community water education.

In a recent Conservation Learning Group release, its director Jacqueline Comito said, “Each of these individuals was nominated by peers and recognized for their efforts, achievements and passion for improving and restoring water quality.”

Hear about Dan’s early experiences and present work leading up to this award.
5-minute video

The Outdoor Alliance of Story County (OASC) has worked with Prairie Rivers of Iowa, and particularly Haug, on a number of projects. In their nomination letter, the board cited Haug for his expertise at analysis and reporting, his role as an outstanding communicator and his leadership during water quality monitoring and creek cleanup events. “We recall a cold April morning when Dan trained volunteers on identifying macroinvertebrates from Ioway Creek. His enthusiasm was infectious, and the volunteers had fun collecting and examining the samples despite the very cold water,” the OASC further states in the letter.

Volunteers searching for macroinvertebrates.

Haug teaching water quality testing.

Iowa State University (retired) Teaching Assistant Professor of Agronomy Laura Merrick said of Haug, “Dan has been my closest collaborator starting in 2017 on a variety of citizen-science and community-based water quality monitoring and watershed-centered coalition-building initiatives. He has grown to serve in a central guidance role to transform the nature of community collaboration for monitoring and sustainable improvement of our regional water quality in surface rivers and streams and to promote youth and community water education.”

Among Haug’s many accomplishments, starting in the spring of 2020 he was instrumental in assembling in Story County a 24-member planning team that developed a 10-year water monitoring plan with Haug as its primary author. He then subsequently authored its first annual report.

“As nice as it is to be recognized by the Conservation Learning Group as part of this dedicated group of water professionals, it was even more gratifying to know that nine friends and colleagues in seven different organizations sent nomination letters on my behalf. It really speaks to the level of collaboration we have around water monitoring and watershed projects,” Haug modestly relates.

According to Prairie Rivers of Iowa Director Penny Brown Huber, “Trying to solve critical water quality problems takes dedicated people to understand what is happening. Dan is a key link to helping the public build their understanding so change can happen to improve water quality.”

To meet all the New Voices in Water Quality Award winners visit newvoicesinwater.org.

Water quality Education at City of Ames Open House

Water quality demonstration at water plant open house.

Haug helping with Ioway Creek cleanup.

Watershed education at Ames Eco Fair.

A Mother’s Love: The Race to Provide

by Jessica Butters | Aug 28, 2022

A speck of sunlight warmed the face of a mother, causing her to wake and stand up. She took a few steps toward the sunlight, letting it warm her cold legs in her tunnel. Looking back at the wall of her nursery, she knew she had limited time to finish her work. Behind that wall was a row of rooms, one for each of her eggs. Each nursery room was provisioned with pollen and walled off from the others, providing a safe place to hatch, overwinter, and hopefully emerge next year. Her antennae started twitching excitedly. She tried beating her wings; they buzzed. She was warm and ready for another day’s work.

She cautiously peeped over the lip of her nest entrance. She was a metallic green sweat bee, and just last week she watched as a parasitic bee invaded one of her neighbors’ nests, ending the hope of a future generation from that mother. To keep all her efforts from being in vain, she had to leave and enter her nest in complete secrecy. She scanned the area around her, checking for someone perched on the tops of rocks or hidden in the shaded spaces between grass stems. So far so clear. She stepped out of her nest, allowing the sun to warm her entire body. Looking around once more, and seeing no sign of threat, she zipped off to start her chores.

Gathering pollen was her favorite chore. She had already started a new nursery cell; all there was left to do was to lay an egg and provide a provision of food. Using the sun as a compass, she navigated to a large patch of gold that she had seen yesterday. The yellow rays of one unoccupied flower caught her eye, and she flew into its center, landing on a blanket of brown bristles topped with yellow tufts of pollen. The buzzing of other insects at neighboring flowers reverberated in the air around her, and caused the flower to tremble even more in the breeze. The air was slowly growing cooler each day. It was taking her longer and longer to warm up enough to fly in the mornings. The frantic buzzing of other insects confirmed a sense of fear she didn’t quite understand. She sensed that she must hurry.

Thinking of her young ones back at the nest, she worked as quickly as possible, picking up pollen and snatching a mouthful for herself every now and then. As she moved across the flower, she let her body brush against as much pollen as possible. She paused periodically to comb this pollen from her abdomen, head, and feet to tuck it onto her back legs where she had thicker, hooked hair that was much better at holding pollen in place. The sun shone on, warming her even more. Through the race to gather and provide for her family, it was nice to be out in the sun and surrounded by velvety gold rays. The bristled brown underneath felt good on her feet and belly. Once she was through gathering here, she remembered a bright purple area that had looked promising.

After a while, the little sweat bee had as much pollen as she could carry. Pushing off the sunflower, she flew back toward her nest, only pausing once for a breath on a stand of purple flowers. Back on the ground, she felt around with her antennae until she found her own nest entrance. She peered inside her dark nest. All was quiet, just how she left it. She glanced behind her. No one had seen her; her family was safe.

As she pulled pollen off her legs and rolled it into a loaf, she had a sense that this may be the last nest she would finish. She felt much more tired compared to a few weeks ago. She was particularly proud of this nest: it was in a well-hidden location, its walls were smooth, and she had a good mix of pollen from different flowers within each loaf she had made for her children. Although she would never get to meet them, she was glad they would have all the nutrition they would need to start a successful life. She hoped they would find the yellow and purple flower patches. She grew more tired. Maybe one more pollen collecting trip before she turned in for the day.

Six Tips to Enjoy Iowa Lakes

by Dan Haug | Aug 23, 2022

There is no better way to relieve stress and get an attitude adjustment than spending time by a lake, whether you’re fishing, swimming, paddling, watching wildlife, or watching the sunset. But it’s hard to enjoy a lake if it’s choked with toxic blue-green algae. Cleaning up Iowa lakes so we can enjoy them will require some shifts to our attitudes.

1. Don’t Panic

I’m sure you’ve all heard about the “brain-eating amoeba” Naegleria fowleri. Iowa and Nebraska both had their first cases in 2022 (both fatal), contracted at the Lake of the Three Fires and the Elkhorn River, respectively. While scary, cases are also extremely rare. Nationwide there have only been 157 cases in the past 60 years, concentrated in the South. And even where the amoeba is known to be present, there are ways to enjoy the water while minimizing risk.

2. Check Where the Beaches are Cleanest

Iowa Environmental Council maintains a map and puts out a weekly report showing where there are beach advisories. The map also shows many lakes with no advisories (the blue umbrellas). For example, in Story County, the beach house at Hickory Grove Lake is sometimes closed due to high E. coli levels, but at Peterson Park, E. coli has been consistently below the detection limit. Not every lake in Iowa is hopelessly polluted, and even the most troubled lakes will have their good days. Take advantage of them!

The beach at Peterson Park in Story County

3. Help clean up dirty lakes at the local level

Having spent some time enjoying a clean lake, hopefully, you are in a better frame of mind to tackle the not-so-clean lakes. There are lake improvement efforts all over the state that need the support of taxpayers or the help of landowners in the watershed. For example, Story County is planning a complete renovation of McFarland Park Lake, which recently suffered an algae bloom and fish kill.

“The renovation will: remove sediment, stabilize shoreline, increase lake depth, and improve lake habitat for aquatic plants and animals. Work will increase overall health of the lake, reduce the number of fish die offs in the future, and improve recreational opportunities.”

4. Keep clean lakes clean at the state and national level

It does no good to dredge out a lake if farmers in the watershed are going to plow up the hillsides around it. This is what happened to Lake of the Three Fires, as related by Chris Jones. When a third of the county was converted from pasture to corn ground, the lake gradually returned to its former shade of brown. We can’t do much about naturally occurring amoebas, but we can take a hard look at the policies, business and purchasing decisions, and attitudes that shape farming practices across Iowa.

5. Think globally, act locally

The warmer the water, the more cases of Naegleria fowleri. The same goes for harmful algae blooms, a much more common problem in Iowa that is getting even more common. If we don’t reduce our greenhouse gas emissions fast, hotter temperatures and more intense spring rainstorms will continue to worsen our water quality woes. Fortunately, there are opportunities to reduce greenhouse gas emissions in Iowa while at the same time improving water quality in the short term by planting more deep-rooted perennials and cover crops, building up organic matter in the soil, and using less nitrogen fertilizer.

6. Share your favorite water memories

A friend was visiting from out-of-state when I wrote this article. A family vacation to Iowa of course included time with the grandparents and a visit to the Iowa State Fair, but he also set aside time to take his kids wading in Ioway Creek, where they caught minnows and marveled at the weirdness of dragonfly nymphs. For my friend, time spent outdoors in creeks and lakes was an essential part of growing up in Iowa, and he wanted his children to share that experience.

What a wonderful mindset to cultivate as we work to improve water quality!

The Community Academy explores Ioway Creek

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