US Water Program

Summer 2026 WEAP training

Event on 01 July – 15 July / SEI scientists will host a four-day training on WEAP, SEI's flagship water modelling software, in July. Register today.

Spring 2026 WEAP training: register today

Past event / SEI scientists will host a four-day training on WEAP, SEI's flagship water modelling software, on 7, 9, 14 and 16 April. Register today.

SEI at AGU25 Annual Meeting

Past event / SEI US water researchers will share their latest findings and ongoing projects at the AGU25 Annual meeting 15–19 December in New Orleans, Louisiana.

Call for abstracts: water research at AGU25

Past event / SEI researchers seek abstracts from interested researchers and agents for two session at the annual American Geophysical Union conference.

WEAP for adaptation planning: water and climate resilience

SEI brief / WEAP is a tool for policymakers and stakeholders to assess climate impacts on water systems, explore adaptation options, and measure water conservation.

Transformational adaptation: a new age of the Water Evaluation and Adaptation Planning (WEAP) platform

Feature / SEI's water modelling tool WEAP has a new name and new website that showcases its utility in climate adaptation.

Predicting California water-year types using seasonal climate forecasts

Journal article / This journal article proposes better hydroclimate forecasts for informing water allocating decisions in the state of California.

A new methodology to estimate the level of water stress (SDG 6.4.2) by season and by sub-basin avoiding the double counting of water resources

Journal article / This journal article details a method to assess water stress at the sub-basin level through developing a new feature for WEAP.

Predictability of cottonwood recruitment along a dynamic, regulated river

Journal article / This article investigates the use of different algorithms to predict cottonwood growth around river banks and its implications in river conservation.