Penn State’s Living Filter

I participated in this event as part of my commitment to Centred Outdoor’s Outdoor Leadership Cohort. I recommend participating in their events throughout the Summer and Fall seasons. You can check out their schedule on their website. Please consider supporting Centred Outdoors and Clearwater Conservancy today.

Last Sunday, I packed a bag and dashed out the door to reach Penn State’s Living Filter in time for the 1:00pm guided tour. I wasn’t sure what to expect… I had gathered from promotional materials that the Living Filter was an experiment, yet also an established wastewater management practice. From the guided walk, I learned the Living Filter was much more than what met my eye.

Dr. Preisendanz from the Department of Agricultural and Biological Engineering met us at the sign-in station to share the history of the Living Filter. For almost four decades, Penn State has used their wastewater effluent as forest and crop irrigation. The hope is that after nourishing the plants and crops, the water will recharge groundwater aquifers. Wastewater is sprayed over the foliage using aboveground pipe systems. This wastewater is some of the cleanest wastewater around- Penn State recently upgraded their wastewater treatment facility to better treat the wastewater from University Park campus and part of State College.

Penn State staff, faculty, and researchers play an active role in maintaining the Living Filter. To ensure proper safety and security of the pipes, staff manually turn on and off the sprayer systems and handle the collection of samples for researchers. Working together, they have managed to eliminate the direct discharge of wastewater into streams and assist in maintaining the base flow of Spring Creek. Plus, this system supports different crops which are used to nourish research animals, eliminating the need to purchase and transport commercial feed.

During our walk, we soaked in the lush foliage around the service roads. Thick bushes of jewelweed lined our walking path. Grain crops emanated a warm and comforting glow over the hills. Climbing up over the grain fields, we passed into fields of tall, strong corn. While the hedgerows were not perfect, they were tidy. However, not all plants love the nutrient-rich water. Some trees, most of species that prefer dryer territory, were fading or even already dead. Penn State technical service staff maintain the safety of the Living Filter by removing any dead trees before, or immediately after a tree goes down.

While the Living Filter is an inspiring facility, what caught me by surprise was the investment of the community members attending the outing. Our small crowd was certainly a mix of ages, experiences, and knowledge. We stopped multiple times during the walk to ask Dr. Preisendanz questions, which she met with enthusiasm. I felt comfortable in this group of (mostly) strangers, and happy to listen to the discussion surrounding wastewater management and sustainable agriculture. I learned that the morning group was larger and had even more questions than us. The 11:00 am group took over an hour, while ours was just under!

On my way home from the outing, I drove past the site of the old Radio Astronomy Building. Now a decommissioned special services building, the area of what used to study celestial objects using radio waves now is the home of the Living Filter’s second half. I didn’t stop to check it out as I was unsure of the permissions one would need to see it for themselves. The initial portion of the Living Filter, on State Game Lands 176, is publicly available. However, be warned that the sprayers are turned on for all other days- even in the middle of winter.

I enjoyed my visit to Penn State’s Living Filter. The “lesson” was fun, the walk was easy, and the attendees were interesting. While this place is checked off my To-Visit List for the Summer, it’s on my To-Visit List for the Winter. Dr. Preisendanz shared the area is a winter wonderland starting in December and worth the trip. For now, when I wash my dishes in the breakroom sink, I know the water will exit the system at the Living Filter!

A Weekend at Gifford Pinchot State Park

In April, I attended the Pennsylvania Outdoor Content Creator Meetup at Gifford Pinchot State Park. This event was organized by Christian from the Hemlocks to Hellbenders podcast and sponsored by Explore York PA. The drive, while long, was easy. I listened to The Ghost Furnace Podcast and The American Birding Podcast. A little after 1 o’clock, I rolled up to the camping cottage to unload my stuff.

Dragonfly Cottage is at the back of the campground on the shore of the lake. As I hopped out of my car, a Bald Eagle took off from a snag across the water. Spotting the eagle felt like a good omen for the weekend. In a flash, I unloaded my bags and set up my bunk. I was set to share with Sara from Hiking Outdoor Family, Britt from Britt Around Town, and Michele from Adventures Abound.

A little later, I headed over to the Conewago Day Use area to meet everyone. I explored the area around our pavilion, finding lots of spring ephemerals. My favorites in this area were Virginia Springbeauty and Azure Bluets. Moss and lichens covered the diabase rocks scattering the area. Introductions were made, and before dinner we went on a hike along Lakeside Trail. Dinner was had, and then we loaded up to visit the vernal pools of Gifford Pinchot.

As Park Educator Beth spoke about vernal pools, I resisted the urge to dip my hands in the dark water. I wanted to hold tadpoles in my hands like a little girl. After she finished speaking, Beth let us explore the pool. I checked out the two citizen science projects there. On the far end is a CrowdHydrology station, and the near end a Chronolog station.

After we finished exploring, I headed back to our cabin to head to bed. I fell asleep fast – as I drifted off, I could hear the night calls of birds and a light patter of rain on the cottage roof.  

The following morning started with a shower and coffee. One of the creators, oneeyewanderz/itravel4coffee, brought an espresso machine. Yes, you read that right- an ENTIRE, ACTUAL espresso machine. He made me a latte, which energized me for our hike to Boulder Point.

Boulder Point is a unique geological feature at the park. It’s a “balanced rock” created by spheroidal weathering and repeated freeze-thaw cycles. About 200 million years ago, molten rock shot through Triassic-aged materials. Thousands of years of erosion revealed the diabase rocks. Keeping age in mind, these rocks may be a periglacial feature. 75 thousand years ago, a huge part of Pennsylvania lie under a glacier. The proximity to permafrost and dramatic freeze-thaw cycles would have accelerated erosion… leaving behind the rocks we see today.

While hiking, the huge variety of spring ephemerals growing at the park delighted me. I saw many species, including: Jack-in-the-Pulpit, trilliums, Wild Geranium, and Wild Pinks. Virginia Bluebells grew in masses- some of the plots also had pink and white varieties. White bluebells are rare, and carry the scientific name Mertensia virginica forma berdii. I saw many clumps of white bluebells, again feeling it was a good omen.

Back at the pavilion, we lunched and enjoyed a variety of interesting talks and programs. Our highlight was DCNR Secretary Cindy Adams Dunn. She stopped to visit with us on her way to check on the forest fires in Michaux State Forest. Her words filled me with inspiration, and I thought about them often throughout the rest of the day.

During a break, I needed to rest and dry my feet. I attempted to take a brief nap, but instead relaxed at the picnic table at Dragonfly Cottage. With my polarized sunglasses, I watched bluegill and bass dart in the water close to shore. Further off, a Green Heron stalked the shallows. The air was full of the calls of Red-bellied Woodpeckers and Red-winged Blackbirds. My heart and soul felt restored while enjoying the peace around me.

Later after dinner, we met Dr. Reigner from the Office of Outdoor Recreation and Executive Director Blischke from the Pennsylvania Council on the Arts. Their session was a facilitated discussion, and I learned a lot from the others in our group. Compared to everyone else, I’m a “baby” creator. The mentorship I was receiving from this session alone… priceless.

The following morning, we packed up and carried on in own ways- and I decided to go birding. At Boat Mooring Area #1, I picked up new lifers: Northern Parula and Yellow-rumped Warbler. On the drive between areas, I saw a Brown Thrasher in a bush! At the Quaker Race Day Use Area, I watched a Cooper’s Hawk get mobbed by a huge flock of crows.

I continued on to the Dam Overlook, hoping to spot more wilderness and forest species. I only saw and heard Tree Swallows. A tall chain-link fence separated visitors from the actual dam area. The fencing eliminated the chance for a scenic overlook. I understand safety concerns, yet it felt out-of-place. Disappointed, I left as a group of peppy flyfishermen started their hike down to the water.

Once I finished birding, I set off for home. I listened to more podcasts- my favorite one from was a Ghost Furnace episode on a sasquatch sighting. I also re-listened to Think Outside with the Pennsylvania Parks & Forests Foundation. I made an impromptu stop at another park, which I’ll share about soon. I stopped at Red Rabbit for lunch, turned off the GPS, and cruised home to my cat, fiancé, and hot shower.

I recommend visiting Gifford Pinchot State Park. There’s a little bit of everything for everyone. With plenty of water, you can kayak, canoe, and fish to your heart’s content. A variety of hiking trails will entertain any level of hiker. Be sure, though, to pack a padded sleeping bag- the camping cottage bunks are unforgiving!

Have you visited Gifford Pinchot State Park before?

Early Spring at Millbrook Marsh

Some days call for a microadventure. I had one such day last week- on my way home, I made the impulse decision to stop at Millbrook Marsh Nature Center and enjoy the warm weather before spring rain rolled into Centre County.

I was delighted by what I found at the 62-acre site: skunk cabbages, good birding, and plenty of peace. From the moment I parked my car, a sense of relaxation washed over me. Over the sounds of the stadium, the raspy oak-a-lee of Red-winged Blackbirds filled the air. As I wandered to the boardwalk, American Robins implored me to go cheerily and cheer-up.

Close to the boardwalk, tributaries of Thompson Run and Slab Cabin Run flowed by. Near their banks sprouted skunk cabbage. While many folks dislike the smell of these Spring flowers, I don’t mind at all. The smell reminds me of my grandfather’s trapping shed and my college-era fieldwork. Despite the smell, skunk cabbage flowers are beautiful. They look like someone speckled lime-green leaves with burgundy wine.

I love the plethora of platforms along the boardwalk. If I hadn’t been wearing work clothes, I would have jumped in to wade and splash. I admit to laying flat on the boardwalk to snap pictures of skunk cabbage and dip my hands in the water. The cool water was refreshing, and helped connect me to the habitat around me. The grasses were soft and smooth, species unknown to me.

Continuing along, I had several close encounters with birds. A White-breasted Nuthatch hustled in a tree directly over my head. I stopped to observe it lifting up hanging bark to search for insects, bouncing from spot to spot. The bird had a bite at least ten times in a minute. I wondered how sharp its eyesight is in comparison to my own. Further down the boardwalk, some American Goldfinches foraged for seeds, unaware of me. I stood as still as I could for several minutes. Eventually, my phone vibrated, and the rustle of my windbreaker scared off the flock of five birds.

There’s many spots along the boardwalk to jump down and go fishing. While fishing with a trout stamp is permitted, all fish must be released unharmed. I stared into the water for some time, trying to catch a glance of a trout. I didn’t see anything except a pair of Mallards, urging me along with loud quacks.

Slab Cabin Run has been under restoration by Trout Unlimited since 2024. Streambank restoration has been the main focus. Slab Cabin Run suffers from agricultural runoff and excess sedimentation. This is a typical problem for streams in Centre County. The new rock vanes and cross vanes are helping channelize the stream and hold back sediments. My inner hydrologist admired the quality of the work and wondered about how the water would test in a lab.

In total, I explored Millbrook Marsh for over an hour, strolling the boardwalk and birding. I left as the sun began to dip towards the mountains, casting a golden glow over the marsh. Before hopping in my car, I paused to soak in the light and start to plan my next trip here in another season.

Late Winter at Hort Woods

The March winds pushed me as I hurried down the sidewalk to Hort Woods. Traffic zipped by, and students shivered as they ran from dorm to dorm. Even though I’ve taken hundreds of walks on campus, I’ve never taken a dedicated walk through Hort Woods. This past Thursday I spent a half-hour in this historic grove of trees at University Park.

In 2001, Hort Woods earned “Heritage Grove” status at Penn State. In the 1800s, Hort Woods stretched from central campus to the Penn State Arboretum site. The original Hort Woods was cleared for construction. The remaining patch of land contains some surviving trees, or at least their progeny. Yet, by the 2010s, the area had become degraded by invasive plants. The Penn State Eco Action Club partnered with Penn State OPP to rehabilitate Hort Woods. Supplemental funding from the Penn State Student Fee Board helped the project along. Rehabilitation included removing invasive species and replanting with the Miyawaki Method.

On my walk, I followed the sidewalks surrounding and through Hort Woods. Despite the dormant landscape, the tract of trees was humming with life. I first spotted a Red-Bellied Woodpecker digging through a snag. Right after, a Downy Woodpecker flitted over my head. I heard the high calls of American Goldfinches and House Finches in the canopy. A Merlin recording revealed more species: Black-capped Chickadees, Dark-eyed Juncos, and White-breasted Nuthatches.

Along the sidewalk in some areas, small green plants were pushing up through the leaf litter. A check with iNaturalist revealed them to be Japanese Pachysandra. In other sections, English Ivy trailed along the ground and up the trunks of trees. English Ivy, while pretty, is difficult to eradicate. The ivy reminded me that eradicating invasive species requires many years of effort. Penn State is making that effort by implementing a sustainable landscape plan.

Derek K., Senior Landscape Architect and Eco Action Club Adviser, shared the University Park Campus Sustainable Landscape Implementation Plan with me via email. The plan mentions “Restoring the Legacy of Hort Woods” as a major action item. The goal of the project is to restore native species and develop the area into a 4-acre swath of healthy habitat. The action plan utilizes straightforward management techniques familiar to non-foresters like myself. Penn State is focusing on soil decompaction, low- or no-till methods, and composting. From my experience, I know these plans will be executed as carefully and thoughtfully as funding permits.

Late winter can be a depressing time of year. My walk tempered this feeling, and I left hopeful for what is in store for Hort Woods. By exploring this one patch of wood, I learned I’m one of many that care deeply for Penn State’s landscapes. Hort Woods is now a part of my walks, and I’m excited to observe the changes as we transition into Spring.

Works Cited

Penn State University. (2014, November 8). Heritage tree groves: G-6. The Pennsylvania State University. https://web.archive.org/web/20141108064008/http://lorax.opp.psu.edu/trees/heritage/groves/hgrove.jsp?ID=G-6

Penn State University. (2012, February 13). Hort Woods rehabilitation project to begin soon. https://www.psu.edu/news/university-park/story/hort-woods-rehabilitation-project-begin-soon

Stephen Stimson Associates Landscape Architects, Inc., Phyto Studio, Climate Positive Design, & The Pennsylvania Horticultural Society. (2024). University Park Campus Sustainable Landscape Implementation Plan. Penn State University.

Midwinter at the Arboretum

Lime-green stalks of bamboo greeted me as I entered the Arboretum at Penn State. This wonderful, ever-changing botanical garden always captures my attention and imagination. Even at midwinter, I enjoy spending my midday break walking among the dormant plants.

I always start with the Oasis Garden. Taking the first left, I wandered through and spun the ice on the Lotus Pool. The walls protected me from the wind as I poked around the plants. Very little was growing here, with most fading away into the mulch. The Rose and Fragrance Garden was more promising. The little buds peeping from the tips of branches signal oncoming Spring. As I finish looping through, a gust of wind shakes the waxy magnolia leaves, causing them to clack like bones.

The walled gardens lead into the Pollinator and Bird Garden. Here the wind gusted, unobstructed by trees or hedges. I pull my shawl closer to my neck and continue to the pond by the Pollinator Plaza. From the top of the willow house, a Song Sparrow calls, spinning around on its perch to watch me. Most other birds are flitting overhead, or on a beeline to the Bird House.

The small wooden building is a relief from the wind. Another visitor is sitting on the porch, so I veer to the back and rest on the bench to watch the feeders. Dark-Eyed Juncos were tumbling over each other as they dig through the mulch for seeds. From the tops of the evergreen trees, a Blue Jay crunched a peanut. After a few minutes, a trio of Black-Capped Chickadees swept in to chase House Finches. I could- and I have- spent hours in this exact spot. Yet with my break ticking to a close, I knew I needed to keep going.

The Pollinator and Bird Garden connects to an esplanade with a giant sundial. The sidewalks border the Children’s Garden. I veered left into the Children’s Garden and entered the faux cave. Cold water dripped from the ceiling, most likely ice melting from the roof. The path carved through the cave, then out and behind the Glass House. Grey and black squirrels danced in the trees overhead as I walked. An employee was tending to the garden, and I stayed out of their way as best as I could.

From the Children’s Garden, I followed the the Strolling Garden path to the Poplar Court. The Black Poplars stretched high into the sky over my head. I wove in and out between the trees, admiring the neon yellow and neon orange lichens. Most appeared to be a species from genus Candelaria. (I’m still waiting for some confirmations on iNaturalist now.) I took as many pictures as I could before I hurried back to work.

Xanthoria parietina (Common Sunburst Lichen)

Even though there were few blooming flowers, the Arboretum is still full of life in winter. From lichens to songbirds, there is a little bit of something for everyone. During my walk, I found a pamphlet rack, which had a booklet on trails in Hartley Wood. As I’ve been walking, I’ve been planning the rest of this year’s adventures… which won’t take me very far at all!