Brian Nei

Open source web tools; all in one place! Work in progress.

Apps

what-utm

Find the UTM zone and projected coordinates for any point. Click a map or type WGS84 decimal degrees; get UTM in metres back.

Browser · Leaflet

BDRC Fitter

Fit stage-discharge rating curves with Bayesian estimation. Upload gauging points, choose the number of breakpoints, and fit. Admittedly inefficient, but it works.

R · Shiny

mannings

Solve Manning's equation for open-channel flow. Enter channel geometry, slope, and roughness to get discharge, velocity, or normal depth.

Browser