South Fork Eel River

SEI is supporting the California Water Action Plan by developing water allocation models, such as the South Fork Eel River Water Allocation Model (SEWAM), and the eWRIMS Analyzer tool. These tools allow policymakers to quantify trade-offs between ecosystem needs, such as in-stream flow requirements for species restoration, and the water availability for agriculture and rural communities. The work involves explicitly representing every water right to assess legal and illegal water use, including cannabis diversions, and using visualization software to analyze these impacts under various climate conditions.

• SEI developed the eWRIMS Analyzer tool to process California's water rights database, enabling the identification of data discrepancies, cataloging of beneficial uses, and estimation of both legal maximum and reported monthly water use.
• The South Fork Eel River Water Allocation Model (SEWAM), built using WEAP software, explicitly represents every water right to evaluate how in-stream flow requirements affect water availability for aquatic habitats, agriculture, and rural communities.
• SEI collaborated with the Water Board to estimate illegal water diversions for cannabis within the South Fork Eel watershed.
• In partnership with UC Davis and Utah State University, SEI is using Tableau software to create visualizations that help decision-makers analyze the spatial nature of water trade-offs under different climate conditions and uncertainties in water management.

APA

Stockholm Environment Institute (2020). South Fork Eel River. https://www.sei.org/projects/south-fork-eel-river/

Chicago

Stockholm Environment Institute. South Fork Eel River. 2020. https://www.sei.org/projects/south-fork-eel-river/.

Wikipedia

{{cite report |author=Stockholm Environment Institute |title=South Fork Eel River |date=5 May 2020 |url=https://www.sei.org/projects/south-fork-eel-river/ |access-date=23 October 2026 |via=Climate Insights Directory}}

BibTeX

@techreport{stockholmenvironmentinstitute2020south, author = {{Stockholm Environment Institute}}, title = {{South Fork Eel River}}, institution = {Stockholm Environment Institute}, year = {2020}, month = may, url = {https://www.sei.org/projects/south-fork-eel-river/}, urldate = {2026-10-23}, note = {Indexed by Climate Insights Directory} }