4.6 miles
veterans home
75 degrees
What a morning! Blue sky, sun, shade, legs and lungs that work. During my warm-up walk towards the river, I was surprised by the absence of birds. Where are they this morning? Maybe it’s because I got a late start: after 10. Continue to feel better about my runs. I’m finding ways to slow down and lower my heart rate. A new goal: be able to keep my bpm below 165 for more (most?) of the run. Right now, it’s around 168-170.
Heard, but didn’t see the falls, both at minnehaha and locks and dam no. 1. Ran past a stopped surrey. Thought about stopping at the park bathroom, but didn’t. Encountered some big branches blocking part of the trail under the ford bridge on the trail just below wabun. Passed by a group of workers in bright yellow vests painting the fence. Enjoyed the sound and feel of soft, sandy dirt under my feet as I ran beside the paved path.
to swim or not to swim?
Yesterday, I received an email from open swim club that unacceptable levels of blue-green algae were found at the main beach and that Minneapolis Parks has issued an advisory. They are not closing the beach, just encouraging people to use caution. For context, when the e-coli is too high, they close the beach. It’s a little unclear, but it looks like open swim club is still happening. An advisory didn’t stop open swim club in 2022. I just searched in my log and found mentions of it — and me not caring about it — on July 26 and 28, 2022. I guess 2022 Sara was much chiller than 2024 Sara. Sigh. That means I definitely have to go and swim at open swim tonight!
I think at least 3 factors have contributed to my worries around blue-green algae: 1. swimming through the green goo last week. It was so gross and unsettling!, 2. my unfortunate willingness to google things and read descriptions of what can happen to you in blue-green algae — I need to stop doing this!, and 3. reading this passage in a beautiful essay about swimming:
Sometimes, in the lakes and the tarns where I like to swim, there is another kind of blue. The blue-green of algal bloom. The Environment Agency and the Lake District National Park tell us that this algal bloom is a naturally occurring phenomenon. That is true, in the same way that cholera is a naturally occurring phenomenon. They tell us this because they do not want us to worry. Algal blooms are made up of cyanobacteria, a kind of naturally occurring photosynthetic organism. It ranges, apparently, from unicellular and filamentous to colony-forming species. (I like those words: unicellular, filamentous. Sometimes I imagine my thinking has become filamentous.)
Some types of blue-green algae produce toxins. You cannot tell whether it is toxic or not by looking at a Harmful Algal Bloom—toxic to me or to wildlife or to the dog over there that is now swimming through the water to fetch the stick I threw in before I’d even noticed the blue-green bloom.
One website tells me that “In humans,” algal blooms “have been known to cause rashes after skin contact and illnesses if swallowed.” I know this to be true because once, before any of us swimmers knew what an algal bloom was or what it might do, I swam through the blue-green scum. My skin began to burn, then it came up in large blotches of red, and some of them began to blister. I thought if I stayed in the cooling water, it would stop. It didn’t. I had seen the bluegreen water but had not known, and anyway, if I had known, apparently you can’t tell only by looking. I got out of the water and drove to the doctor’s surgery. He couldn’t tell. He poked the blotches and asked how long I’d had them and more of those kinds of questions because in those days even doctors didn’t know the right kind of questions to ask.
When the levels of the lakes fall because of the lack of rain, or when there has been another extended period of unusually hot weather, that’s when the algae come out to play. To make us not know which one is which. Sometimes the algae are the result of human sewage build-up in the lake. This one is not nice to play in. And sometimes the algae occur because of agricultural fertilizers running off from the surrounding fields and fells that have built up over time. So yes, it is natural. Of a kind.
According to scientists, cyanobacteria and the toxins they produce “represent one of the most hazardous waterborne biological substances that produce a range of adverse health effects from mild skin irritations to severe stomach upsets and even fatal consequences.” And it doesn’t end there. If the bloom lasts and continues to build, it blocks sunlight from the water, depriving fish and the plants that bloom in their own funny, unseen way on the bottom of the lakes and tarns, and aquatic insects too. If it all goes on too long, the plants can’t obtain oxygen and can’t assimilate the blue-green-grey filtered light of the sun.
Kinds of Blue: On the Human Need to Swim / Karen Lloyd
filamentous (def): thread-like; the backs of feathers are filamentous
Thinking that is filamentous? Thread-like — small, tenuous ideas combining. Is a net filamentous? I’m reminded of my month with dirt and this bit from 21 April 2022:
many fungi live in the soil, where their thread-like filaments, called hyphae, spread into fans and tangle into cords through the dirt. If you could make the soil liquid and transparent and walk into the ground, you would find yourself surrounded by nets of fungal hyphae (137).
Mushrooms at the End of the World
Thought about imagining the soil was liquid and transparent and then entering it, surrounded by nets of fungal hyphae. What if I could swim in the soil? Swim through these nets of fungal hyphae?
Some nets I’d like to swim through, some I don’t!
Also, I think the blue-green algae in lake nokomis is because of lawn fertilizer run-off.
24 pools
Here’s some more Olympic swimming facts to put next to my discussion of water quality in the Seine from last week. Olympic swimming events start tomorrow and, apparently, some swimmers are concerned about the depth of the pool: deeper = faster = less waves and the Paris pool is just barely over the minimum required depth: 2.15 meters/2 meter min req). While reading this article on swimswam, Paris Swimming Pool Depth Raises First Concerns, I discovered this delightful fact: there are 24 pools for the Paris Olympics, including competitions pools and warm-up pools. Wow!
bike: 8.5 miles
lake nokomis and back
82 degrees
My first solo bike ride to the lake this year. Hard to believe. Some of it was because Scott has been coming with me to run while I swim and some of it was because I thought my tires were leaking air. I think it might be that I’m not pumping them up properly. The bike ride was great. I wasn’t worried about seeing at all. No scary moments, wondering where the curve was or having to check again and again and again before passing someone. Also, no pain in my left leg during the bike. In past years, this has been an unexplained problem.
swim: 4 loops
lake nokomis open swim
82 degrees
I did it! It was a beautiful night for a swim. There were some open water swimmers, but not as many as on Tuesday. Lots of non-club members wading in the swimming area, even with the advisory. I watched out for blue-green algae as I swam, but didn’t notice any anywhere. A few times, I had an itchy-prickly sensation — a toe, my calf, a finger. Was I imaging it? I decided the reason I’m more nervous about the algae this year is because I swam through so much of it last week.
So, the algae wasn’t a problem. Instead, I had to contend with swan boats pedaling and boarder paddling across the swimming area. When I first sighted them, I often mis-identified them as lifeguard boats. Also a problem — well, maybe not a problem, but a challenge — was the sun. Not only bright, but doing something to the air so everything looked hazy. Difficult to see anything, especially on the way back to the big beach. The stretch between the first and second orange buoys was strange. The sun was hitting my goggles in such a way that caused a weird red streak underwater in my left eye. Not bright red, just red.
Other than streaks of red, the water was a pale, almost yellow, green. Low visibility. No sparkle friends or bubbles, barely a view of my hands. The water was full of swells. No waves crashing into me or going over my head, but a lot of rocking. Occasionally I had to breathe just on one side to avoid inhaling water.