Two of these are becoming businesses: Hydrohistorian, which makes Colorado’s water record readable, and Alcyone, which advises a treatment plant on its daily chemical doses. The rest are tools I built because I wanted them to exist. All of them are held to the same bar: genuinely useful, honest about what they do, careful with your data.
hydrohistorian.com
A century of Colorado water, made readable. All 78 water districts on one map; the river drawn as a flow network you can trace headgate by headgate; decreed rights, administration numbers, and the call record back to 1950; 469 gages at full period of record, the longest starting in 1899; trends, drought, snow, groundwater, and an address lookup that tells you which ditches serve your ground. Every page shows where its numbers came from.
alcyone.us.com
A dosing advisor for drinking-water treatment plants. It predicts settled turbidity, aluminum, and manganese from the day’s raw water, recommends the cheapest set of doses that still clears the plant’s limits, and keeps the ledger of recommended against fed against produced. Mechanistic chemistry calibrated to the plant’s own lab record, with honest prediction intervals — and it never writes a setpoint. The operator decides.
The early-retirement planner for the years before 59½. It maps the bridge-years access rules most tools skip — Rule of 55, 72(t)/SEPP, the Roth-conversion ladder, the ACA subsidy cliff — and stress-tests the plan with Monte Carlo and a 1928–2025 historical backtest. Every number sourced to the IRS/CMS; runs locally, nothing uploaded.
A single-manager project-management and “scrum master” tool that keeps your whole portfolio prioritized across today, this week, month, quarter, and year — with realistic forecasts, two-way calendar sync, and a coach, not a nag. Runs locally; your data stays yours.
Describe a piece in plain English — flat-pack furniture, a solid-hardwood chair or table, even a whole electric guitar — and get back a checked design and machine-ready cut files for a desktop CNC router. Made-to-measure, with the geometry, structure, joint-fit, and cut-safety troubleshooting done for you, and honest about what only a real test cut can confirm.
A computer-vision tool that turns a photo of a wall into a mapped, shareable climbing route — making it easier to record and find lines at the crag. Early days; more as it comes together.
A finder for the overlooked outdoor places — quiet trailheads, swimming holes, and viewpoints that don’t show up on the usual lists. Still taking shape.
There’s research behind the water products, too — rainfall statistics for every dam in the country, run so the numbers can be checked. See the research →
Curious about one of these, or have something you wish existed? Get in touch — I like hearing what people are trying to solve.
