The Columbia River, from its headwaters in British Columbia to its mouth on Oregon’s north coast, is the second largest river in the country. The Willamette River – whose valley is home to the majority of Oregon’s population – is volumetrically the 10th largest river in the U.S. With that amount of water flowing through the state, it’s hard to imagine that Oregon is going to run out of water any time soon, particularly west of the Cascades.

The importance of regional planning and collaboration
Oregon has a panoply of water sources, from reservoirs to rivers to groundwater wells. In the tri-county Portland-metropolitan area these supplies are managed by a collection of water districts, public utility districts and cities.
In the early 1990s water planners saw the writing on the wall as the diversity of readily available water rights narrowed. Federal legislation, the Clean Water and Endangered Species Acts, pressure from environmental groups, land-use planning regulations, population growth, and the sheer number of water providers motivated a collective examination of assumptions held about secure water rights for the future. In response, water providers in the Portland-metro area created the Regional Water Supply Plan, a comprehensive, integrated framework of technical information, resource strategies and implementation actions to meet the region’s water supply needs to the year 2050.

As a means to implement the plan, water providers formed the Regional Water Providers Consortium in 1997. Over the last 12 years, this group of 24 water providers plus the regional government has worked on critical water supply issues and collaborated on emergency preparedness planning. The Consortium also implements a robust conservation program that utilizes two-thirds of the group’s $740,000 annual budget.

Focusing on mutually beneficial activities while retaining each water provider’s authority to operate and upgrade its individual system and infrastructure has allowed the Consortium to weather changing political tides and meet institutional priorities that affect all providers.

Addressing the impacts of climate change and population growth
In Oregon, longer summers will present challenges, even for rain-fed water supplies. This will be especially notable when the demand for drinking water is balanced with other needs, from agriculture to habitat to recreation. In Oregon, the time of year when we need the most water – summer – is the season of least precipitation.

Also, if climate change impacts pan out the way some scientists are predicting, it could mean displacement of human populations to the point where Oregon – especially west of the Cascades – is going to look really attractive to those living in increasingly hot, dry areas in the country. Researchers and land-use planners are just beginning to study this aspect of migration and its impact on existing population forecasts.