What If? The Emerald Canal

Emerald Canal model between Oak & Pearl to the Amazon channel (image source: pages.uoregon.edu/diethelm/CanalImages.html)
 

During my University of Oregon days, I became aware of a visionary plan to create an eleven-block-long canal through the heart of Eugene that would connect the eastern end of the old Millrace that courses along the backside of the fraternity and sorority houses north of 11th Avenue to the concrete drainage channel extension of Amazon Creek at 17th and Oak. This plan proposed, in the words of its champions, “a rich, local blend of historic millrace and San Antonio Riverwalk.” If realized, the project, which they dubbed “The Emerald Canal,” would be a 35’–40’ wide waterway with broad promenades on both sides meandering beneath native trees within an urban garden.
 
A related but formally separate proposal from the same era envisioned restoring the Millrace’s own downtown dead end near Ferry Street as the anchor for a new riverside district.(1) 
 
I thought the Emerald Canal concept was brilliant. Portions of the Millrace as it existed were navigable by canoe. How great would it be if my friends and I could row further through the city, perhaps pulling ashore along the way at a canal-side café for lattes? How much would such a linear water park and urban village add to Eugene’s identity and sense of place? I found the prospect of the project being realized someday incredibly attractive.
 
Chief among the plan’s proponents was Jerry Diethelm, now Professor Emeritus of Landscape Architecture & Community Service at the University of Oregon and both a registered architect and a registered landscape architect. The Emerald Canal was his decades-long personal campaign. Its origin story dates back to a 1977 graduate studio he taught called “The Amazon Corridor.” Community interest soon led to the formation in 1982 of a joint City of Eugene/Lane County Emerald Canal Feasibility Task Force, chaired by state senator Margie Hendriksen, with Jerry serving as the principal planning consultant. The task force studied the project for six months and determined it was feasible. The estimated cost back then to make it a reality? $22 million.(2) 
 
After I returned to settle in Eugene in 1988, I was excited to read further news about the Emerald Canal concept. Jerry continued to build the case for the project through the mid-1990s, teaching new design studios around the concept and conducting a series of associated planning studies for the City of Eugene and EWEB, which featured a restored millrace and a Millrace Park at the river confluence. Along with Charlie Porter and Jerry Rust, he formed the Emerald Waterways Citizens Committee, Inc. They had two large, elaborate models built to show around town, garnering support for the project. The wealthy Gloria Teichert became an enthusiastic patron, primed to invest in a water-related project after helping bankroll water-conservation work in Africa. With her backing, the committee rented a storefront space on West Broadway to show off their Emerald Canal models.(3) Then, in what Jerry called his favorite near-miss, Teichert and her brother fell seriously ill and moved to Canada, and the funding vanished with them.

 

Reversing the Canal for Amazon flood release (image source: pages.uoregon.edu/diethelm/reversible.html)

The pitch for the Emerald Canal was never just aesthetic; it promised hydrological benefits as a small but critical link in a regional water circuit: Willamette into the Millrace, through the Emerald Canal to the Amazon, past the Fairgrounds to Fern Ridge Lake, over the dam into the Long Tom River, and back into the Willamette north of Monroe. This circuit would be important for area farming, wetland habitat, and recreational boating access to Fern Ridge. The relatively short in-town connection would create a very large waterway system with benefits for the community everywhere along its course. That’s a testament to how comprehensive Jerry’s vision was.

 
The flood-control argument was the most concrete of the bunch, and probably the one that came closest to actually unlocking money. During a major flood in the Amazon Basin, when an overwhelmed Amazon Creek would back up into the city, a reversible Emerald Canal could carry the excess directly to the Willamette. Engineers at the time argued it was a cheaper fix than building dams upstream.(4) That argument has since been overtaken by events. Since the 1990s, the Amazon Basin’s flood-storage problem has largely been addressed a different way, through the West Eugene Wetlands Plan and the ongoing naturalization of sections of Amazon Creek, including the stretch between 19th and 24th avenues. The federal dollars that might once have built a canal went to restoring wetlands instead.
 
During the years that followed the initial bloom of public enthusiasm, Jerry wrote several pieces for The Register-Guard and Eugene Weekly about the concept. Undaunted but increasingly wry, these included a jab at the City of Eugene, calling it the “Home of the Historic Eugene Millrace Cover-Up,” and later, sardonically ranking the Emerald Canal and Millrace restoration as “No. 8” on the city’s perpetual to-do list.
 
Jerry’s doggedness has gone unrewarded. The Emerald Waterways Citizens Committee is no more, and there’s no next-generation advocate to reopen the conversation. In 2026, he is the plan’s sole institutional memory.
 
The disappointing part of this story, besides the fact that the Emerald Canal is not a reality today, is what it says about ambition and its limitations in Eugene. I want to believe that imaginative, farsighted people can, with popular support, still make dreams come true. That this is increasingly difficult goes without saying. Regardless, I can lament the shrinking of our ambitions while still retaining hope that realizing them remains possible.
 
Chicago architect Daniel Burnham (1846–1912) famously said the following about visionary ideas:

“Make no little plans; they have no magic to stir men’s blood, and probably themselves will not be realized. Make big plans; aim high in hope and work, remembering that a noble, logical diagram once recorded will never die, but long after we are gone will be a living thing, asserting itself with ever-growing insistency. Remember that our sons and grandsons are going to do things that would stagger us. Let your watchword be order and your beacon beauty. Think big.”(5)

Burnham wished to inspire large-scale civic planning and bold thinking. This was more attainable in his day than it is now. The reality is that grand visions and big projects aren’t financed the Burnham way anymore, through a single civic will imposing itself on private land. The post-war urban renewal era caused real damage, including here in Eugene. That era’s legacy fueled the apparatus of environmental review, historic preservation law, mandatory public comment, and eminent domain restrictions. This apparatus is necessary, but it has handcuffed those community leaders who have harbored ambitious dreams.

San Antonio's Riverwalk (image source: Library of Congress - public domain)

 

The city can still build big things, but typically only on ground it already controls, with private-sector partners. The Downtown Riverfront development is the case in point. That site was a vacant industrial brownfield: one owner, EWEB, and no other properties to buy out. The Emerald Canal, by contrast, would have run through built-up urban fabric. Digging an open waterway through eleven or twelve blocks of the West University neighborhood would have meant acquiring dozens of parcels, relocating infrastructure, and disrupting a part of town that’s only gotten denser and more expensive since Jerry first proposed the project nearly fifty years ago. Lacking an overwhelming public mandate, the city can no longer draw a diagram through occupied city blocks and proclaim eminent domain. And, tellingly, the Downtown Riverfront’s own master plan, for all its ambition, includes no reopened millrace, no daylighted canal, no flowing water at all beyond the river’s own edge.  
 
Money was and is always an issue, too. The Emerald Canal’s funding path largely depended on passage of a countywide general obligation bond measure, which never occurred. Tax-increment financing wasn’t an option, either, since much of the proposed route lay outside the Downtown Urban Renewal District.
 
The one piece of Jerry’s vision still alive today is the University of Oregon’s own millrace restoration, a concept plan for a bio-habitat-focused Millrace Natural Area, with implementation still in the planning and incremental restoration stage rather than full construction. It’s a worthy project on its own terms. It is also, unmistakably, the shrunken remnant of something much larger: campus-bound, ecological rather than civic, with no ambition to reconnect to downtown at all.
 
Eugene once had the imagination for a project like the Emerald Canal but lacked the means. Today, it is a case study that reads less like a missed chance than a measure of how far Eugene’s civic capacities have contracted. Jerry’s idea was sound, its benefits clear, and his advocacy persisted for nearly fifty years. The problem is that the machinery that might once have carried a project of its scale no longer exists here. My “what if” isn’t a prompt for nostalgia so much as a note on the distance between the Eugene some could imagine and the Eugene that could never build it.

(1) The Emerald Canal plan proper ran from the Millrace’s blunted end near 10th and Ferry to Amazon Creek at 17th and Oak. The separate Millrace Park / lower-Millrace restoration idea, tied to the mid-1990s Ferry Street Corridor and South Bank planning process, would have daylighted the Millrace down to the Willamette on EWEB-owned land, the same parcel now redeveloped as Eugene’s Downtown Riverfront district.

(2) Figure and task force account per Jerry's own 1998 Register-Guard commentary, “Millrace for the Millennium.” Accounting for inflation alone, $22 million is about $70 million today. This understates the current reality, as urban construction and right-of-way costs in a dense, developed corridor have outpaced general inflation for decades. A 2026 estimate that prices in property acquisition would probably run into hundreds of millions.

(3) Sourced to Jerry's own retelling in “Emerald Canal Diary,” Eugene Weekly, June 30, 2005 (reprinted June 27, 2013).

(4) The hydrology was run by LCOG and confirmed by the Army Corps of Engineers at the time, per Jerry's own account.

(5) The quote’s own provenance is shakier than its fame suggests. It first appeared in print nine years after Burnham’s death, in a 1921 biography, with no citation, and historians long suspected an associate had assembled it from letters and speeches rather than recorded it verbatim. A 1910 Chicago newspaper account of a Burnham speech, unearthed in 2019, closes with nearly the same words, which is generally taken as confirming he really did say something close to this.