Dan Scott (he/him)
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geomorphdan.bsky.social
Dan Scott (he/him)
@geomorphdan.bsky.social
Fluvial geomorphologist. Wood, sediment, and everything else a river is. Senior Geomorphologist at Watershed Science and Engineering, Research Scientist at Colorado State University.
#Drone folks - any considerations on a Mavic 3E vs 3M? I collect orthomosaics of rivers for ecogeomorphic mapping. I'm leaning towards 3M even though I'll rarely use the multispectral cams, since the cost is very similar to 3E, main cam is identical, and I can't see use case for the 3E zoom cam.
November 6, 2025 at 7:41 PM
For more context here, this is an image (from a few years ago) of what I mean by forest dispersing flow. The channel steepens just downstream of this forest (second image) - that looks to me like a headcut arrested simply by obstruction-forced widening upstream.
November 5, 2025 at 3:53 PM
They do! Holy cow - never even occurred to me. Would take some absolutely beastly giant beaver to move these logs, though - I don't think even Casteroides ever got that strong, haha.
November 5, 2025 at 3:47 PM
Here's another one. Side channels in the floodplain have been there, and much shorter than the mainstem, for close to 30 years (inc. a 50-yr flood). Wood plays a big role here, but so does the vigorous floodplain forest, which disperses flow and inhibits headcuts that would otherwise drive avulsion.
November 5, 2025 at 3:22 PM
It's a buckle down, turn on some Chappell Roan, and measure some rivers kind of morning. This looks like a normal meander cutoff, right? Wrong! The channel that lost flow (left side of image) is expanding again, just a few years after what I thought was a full avulsion. What's the culprit? Wood?
November 5, 2025 at 3:22 PM
Is anyone aware of a private river science and/or consulting company that is organized as a worker-owned cooperative or worker self-directed non-profit? Is anyone else in my field prefiguring an alternative to capitalism?
September 30, 2025 at 7:59 PM
Longmont, CO showed up today to say "NO KINGS!" loud and clear!
June 14, 2025 at 10:20 PM
Ever been surprised by a river in a bad way, like a flood? I help folks understand rivers and not get surprised so they don't get hurt or lose stuff. NOAA, USDA, and NSF fund the work I do. If those agencies stop working, people become endangered.
May 6, 2025 at 2:07 AM
I'm not really *that kind* of geologist but this one really captivated me. Basal basalt, then sandstone/conglomerate, then basalt, more sandstone (the bright red/white), then more basalt! And then tuff to mantle it all! What a cool spot - Frijoles Canyon, NM.
April 14, 2025 at 5:13 PM
#timelapse camera folks, got any good recommendations for a timelapse camera that will last for a year unattended at a 15-60min day/night interval (15 preferred)? Been using Bushnell for years, but build quality has declined recently and I'm looking for something new.
February 21, 2025 at 3:02 PM
Been severely overworked for about 10 months now, and my recent writing (my primary output) is clearly worse than my past work. My writing's hurried, more focused on "what" than "why," less concise. This sucks. I feel like this river (more work than I can keep up with).
January 16, 2025 at 4:20 PM
Big snow avalanches deliver tons of wood to streams. How much of it sticks around? How do these huge wood pulses affect the wood regime? Or, do they? Are they mostly just mulched trees, with very few large logs? We're working on it. Images show the same 300m-long slide deposit in 2019 and 2024.
November 20, 2024 at 3:44 AM
What makes beaver dams so effective? They're outstandingly effective structures. Is it how they're built? Materials? Where they're located? No. It's care. Careful attention, day in and day out, by beavers. Stewardship. So why do we think process-based restoration is a one-and-done sort of thing?
November 14, 2024 at 9:39 PM
Straight-up Stranger-Things level stuff going on with this burned tree.
December 1, 2023 at 5:04 PM
Looking for writing mentoring suggestions. I've taught technical communication, but mentoring junior scientists/engineers one-on-one is another ball-game. Tips on guiding someone towards clearer technical communication would be much appreciated!
November 8, 2023 at 10:53 PM
Unvegetated sand dunes can deliver tons of sediment to adjacent streams. E.g., North Sand Creek, CO, where sand pulses on the order of 10k m^3 (4 olympic swimming pools!) can move downstream annually. Log jams attenuate these pulses, but a downstream diversion ditch is still getting well-buried.
November 1, 2023 at 7:26 PM