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.
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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.
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