State Water Resources Control Board demonstrates open-source LSPC watershed modeling to support drought planning

Feb 24, 2026

Board staff demonstrated an open-source Loading Simulation Program in C++ (LSPC) workflow that pairs calibrated hydrologic models with cleaned diversion records to estimate water supply and demand across 18 California watersheds; a $15 million contract with Paradigm Environmental was cited to expand work and draft model reports will be posted for public review.

The full story

State Water Resources Control Board staff demonstrated an open-source hydrologic modeling workflow designed to give state and local water managers a consistent baseline for planning and drought response.

Free newsletter

Sign up to keep reading.

Your free newsletter brings you what your city council, county, and school board discussed and decided.

or
Already have an account? Sign in