Observed arrival · 2026-11-05
A draft sea-lamprey barrier-sizing tool
A web prototype for assessing existing sea-lamprey barriers and sizing a proposed structure from workbook inputs.
○Open
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$Paid
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✦Pretty
●Pro
◎Niche
◉Human
⚑Risk
ƒJS
- For
- Fishery engineers and technical reviewers
- Worth noticing
- It exposes workbook ranges and unresolved inputs, including a blank existing crest and an unverified vertical datum.
Field notes
The interface separates an existing-barrier assessment from proposed-structure sizing and exposes input readiness, imported ranges, and assumptions. It lists eight flood events (170–400 cfs), monthly duration-curve anchors, and a 20-year/1.50-foot criterion. The page says site identity and vertical datum remain unconfirmed, daily basis is assumed, and workbook macros were not run, so the analysis is explicitly preliminary.
Observed signals
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Editorial observations of this landing page, not a rating.
○OpenPublic substance visible
✦PrettyNotable craft visible
●ProPolished or operationally mature
◎NicheUnusually specific use
ƒJavaScriptBrowser-side code central
One card from the complete issue