Strategic Large-Basin Management for Multiple Benefits

The report highlights Lake Winnipeg's extreme vulnerability to upstream pressures due to its very low volume relative to its massive drainage basin. It argues that managing the lake in isolation is insufficient and recommends a transboundary, basin-wide framework that treats land as 'ecological infrastructure.' By implementing distributed storage and wetland restoration, the region can mitigate floods, capture nutrients, and buffer against climate change while supporting hydroelectric generation. The document draws on case studies from the Columbia River and Murray-Darling basins to illustrate how integrated water resources management (IWRM) and ecosystem services can balance competing economic and environmental needs.

• Lake Winnipeg has the smallest water storage capacity relative to its basin size among the world's large lakes, making it exceptionally vulnerable to upstream influences.
• Climate change is expected to increase the frequency and intensity of both droughts and floods in the Lake Winnipeg Basin, which poses significant financial risks to Manitoba Hydro's electricity generation.
• Upstream flooding is a primary driver of nutrient loading in Lake Winnipeg; high runoff in the Red River Basin since the mid-1990s may have caused up to a 32% increase in phosphorus concentration.
• Wetland drainage significantly increases peak flows and nutrient export; restoring wetlands in the Little Saskatchewan watershed could reduce phosphorus loading by up to 34.1%.
• Distributed water storage options, such as back-flooded dams, are highly cost-effective, with benefit:cost ratios ranging from 128 to 371 percent.
• The Columbia River Basin serves as a model for balancing energy demands with ecosystem needs through the Northwest Power and Conservation Council, which uses power revenues to fund fish and wildlife programs.
• The Murray-Darling Basin Authority utilizes an adaptive framework and economic mechanisms, such as water quantity trading and government buybacks, to ensure environmental flows.
• An IISD analysis of seven transboundary basins found that most integrated water resources management (IWRM) frameworks focus on traditional needs like hydropower and navigation rather than non-conventional ecosystem services like water purification.

APA

Zubrycki, K., Roy, D., Venema, H. D., & Grosshans, R. (2015). Strategic Large-Basin Management for Multiple Benefits. International Institute for Sustainable Development. https://www.iisd.org/system/files/publications/strategic-large-basin-management-multiple-benefits.pdf

Chicago

Zubrycki, Karla, Dimple Roy, Henry David Venema, and Richard Grosshans. Strategic Large-Basin Management for Multiple Benefits. International Institute for Sustainable Development, 2015. https://www.iisd.org/system/files/publications/strategic-large-basin-management-multiple-benefits.pdf.

Wikipedia

{{cite report |last1=Zubrycki |first1=Karla |last2=Roy |first2=Dimple |last3=Venema |first3=Henry David |last4=Grosshans |first4=Richard |title=Strategic Large-Basin Management for Multiple Benefits |publisher=International Institute for Sustainable Development |date=March 2015 |url=https://www.iisd.org/system/files/publications/strategic-large-basin-management-multiple-benefits.pdf |access-date=23 October 2026 |via=Climate Insights Directory}}

BibTeX

@techreport{zubrycki2015strategic, author = {Zubrycki, Karla and Roy, Dimple and Venema, Henry David and Grosshans, Richard}, title = {{Strategic Large-Basin Management for Multiple Benefits}}, institution = {International Institute for Sustainable Development}, year = {2015}, month = mar, url = {https://www.iisd.org/system/files/publications/strategic-large-basin-management-multiple-benefits.pdf}, urldate = {2026-10-23}, note = {Indexed by Climate Insights Directory} }