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Movement Won 1964–1973 Politics, 1960s

Concrete or Grass: The Fight Over Indian Bend Wash, 1964–1973

In the early 1960s the Corps of Engineers planned a concrete channel down Indian Bend Wash and Congress paid for it. A landscape architect's 1964 newspaper column, a citizen planning program and a failed county bond turned the city against it, and by 1973 Scottsdale was building parks in the floodway instead.

Illustration for The greenbelt fight: a city talks the army corps of engineers out of a concrete ditch

The 30-second version

  • The Corps' plan, sent to Congress in 1964 and authorized in the Flood Control Act of 1965 at $7.25 million, was a concrete channel about 170 feet wide through the middle of the city. The council endorsed a channel in 1962, the city's historic context says.
  • On February 8, 1964 landscape architect Bill Walton proposed in the Progress that the city buy the wash and make the flood channel 'a unique and outstanding park area.'
  • STEP's citizen committees opposed the concrete channel; a county bond to pay for it failed in 1966.
  • The city's engineer proposed an upstream reservoir and a grass-lined channel, the 'Erickson Plan,' and the 1969 STEP committee asked the council to adopt it.
  • After floods in 1970 and 1972, voters approved a greenbelt bond in April 1973, and the Corps joined in.

The question

Should the wash that flooded through the middle of Scottsdale be lined with a federal concrete channel, or shaped into parks that could take the floodwater?

The sides

The greenbelt side

A concrete channel would cut the city in two and be useless 360 days a year. Buy the wash, keep it open and grassed, and let it carry floods and serve as parkland at once. Land beside it would be worth more, not less.

“Planning and foresight could make the Indian Bend Wash flood control project more than just a concrete channel which would divide the city. A turfed channel can be designed so as to serve a variety of purposes.” Bill Walton, landscape architect, op-ed in the Scottsdale Daily Progress, February 8, 1964

Bill Walton

The Corps of Engineers and the county

A concrete-lined channel about 170 feet wide was the proven way to carry the wash's floods, and Congress authorized it in 1965. The county Flood Control District was to raise the local share.

“The project for flood protection on Indian Bend Wash, Maricopa County, Arizona, is hereby authorized substantially in accordance with the recommendations of the Chief of Engineers in House Document Numbered 303, Eighty-eighth Congress, at an estimated cost of $7,250,000.” Flood Control Act of 1965, October 27, 1965 (79 Stat. 1083)

How it ended

The county's bond for the channel failed in 1966. The city backed an engineer's grass-and-reservoir alternative, the Corps studied it from 1968 and came round, and after the floods of 1970 and 1972 voters approved a greenbelt bond in April 1973. The Indian Bend Wash Greenbelt was finished in 1985.

What holds it: Money June 22, 1972

The short version

Indian Bend Wash is the dry riverbed that runs north to south through the middle of Scottsdale. For most of the year it carries nothing; in a big storm it carries a river, and the subdivisions of the 1950s had been built across it. The federal answer, worked out by the Army Corps of Engineers in the early 1960s and authorized by Congress in 1965, was a concrete channel about 170 feet wide.

Scottsdale talked its way out of it. A landscape architect’s 1964 newspaper column proposed making the flood channel a park, the city’s citizen planners took up the idea, a county bond for the concrete failed in 1966, and the city backed an engineer’s alternative of grass and an upstream reservoir. It took two more floods and a 1973 bond to settle, and the greenbelt that resulted is the city’s best-known piece of planning.

The federal plan

The Corps and the county Flood Control District began public meetings about the wash in 1959, Joan Fudala writes. The city’s 2012 historic context dates the Corps’ plan to 1961: “a concrete channel, 23’ deep and 170’ wide, lining Indian Bend Wash.” A 1978 Christian Science Monitor account puts it in 1963 and calls it “a standard solution” of “sterile concrete canals.” The Corps’ report went to Congress as House Document 303 in May 1964, and the Flood Control Act of October 27, 1965 authorized the project “at an estimated cost of $7,250,000.” The council, the city’s context says, had voted to endorse the channel in 1962.

A column in the Progress

On February 8, 1964 Bill Walton, a landscape architect who had moved to Scottsdale the year before, wrote in the Scottsdale Daily Progress: “I would urge city and civic leaders to buy land and begin planning now for recreational purposes, and, to be specific, to consider buying the complete five miles or so of the Indian Bend Wash in which the flood control project is to be placed and to make it into a unique and outstanding park area for Scottsdale.” He did not oppose flood control. “A turfed channel can be designed so as to serve a variety of purposes,” he wrote. “Let’s get bold; let’s plan ahead.”

The idea found a ready audience. The city’s new citizen-planning program, STEP, began that November, and the city’s context says a 1964 STEP committee “opposed the concrete channel and recommended that the city pursue a greenbelt solution instead.” The Monitor’s 1978 account agrees that citizens “meeting in neighborhood groups … decided that flood control precautions could be combined with park and recreational facilities.” In March 1965 the council appointed Walton to the Parks and Recreation Commission, where he chaired its wash committee.

The county bond and the Erickson Plan

In October 1965, the city’s context says, the council hired an engineer, John Erickson, to analyze the Corps plan. In 1966 a bond issue to pay the local share of the concrete channel failed. The context calls it a March county Flood Control District election lost three to one; Fudala says Scottsdale voters defeated it; the Monitor says city officials “voted the idea down by a resounding margin.” The same year the city acquired 55 acres on Miller Road that opened in 1967 as Eldorado Park, the first green piece of the wash.

Erickson’s design is described in the city’s 1969 STEP report: “the City Council proposed the upstream construction of a reservoir which could be drained slowly by a relatively small earth and grass-lined channel. This later design is the so-called Erickson Plan.” The committee recommended “That the Erickson Plan be adopted by the City Council,” with a lake and park of at least 40 acres at the Arizona Canal and green strips the length of the wash, keeping “a 170’ flood control channel” easement inside them. In 1968, the context says, the Corps had received money to study the alternative.

Settling it

The floods made the argument for the greenbelt side. The Labor Day flood of 1970 and the June 22, 1972 flood, which destroyed seventeen homes, came before the money did. In April 1973 voters approved a bond for the greenbelt, seven to one by the city’s context. (The same spring voters gave the city charter power to require developers to pay for flood control; no document says whether the bond shared that April 10 ballot.) Part of the price was paid in density: “Generally the Council has been willing to permit increase in the density of developable land in order to give developers incentive to construct the Indian Bend Green Belt Wash Floodway,” the city told its citizens that fall, and developers dug, turfed and deeded stretches of the channel. The context says the Corps had agreed in 1971 that the Erickson alternative would work; the Monitor says the Corps “abandoned its previous position and joined in” once the city was clearly going ahead, and quotes a Corps spokesman calling the result “the nation’s first floodway project to both reduce flood damage and build recreational facilities in the same design.” Its first real test came in the floods of March 1978: “It worked beautifully!” Mayor Bill Jenkins wrote to Congressman John Rhodes, and the areas it protected were “virtually unscathed.” The Indian Bend Wash Greenbelt was declared complete in 1985.

Who paid the price

The wash was not empty. Yaqui families who had moved there after the water users closed their last labor camp in 1956 lived in and beside it, and the city’s context says many lost their homes in flooding in September 1966. The 1969 STEP committee described their neighborhood as “deteriorated” by “flood hazards, low-income families, and poor construction techniques” and recommended federal redevelopment money. Houses were removed from the wash and new ones built nearby, and the families moved into them in the early 1970s; Vista del Camino Park took the land along the wash. No statement from the families about the flood plans survives.

The 1960s politics chapter sets the fight beside the decade’s other arguments, and the greenbelt lexicon entry explains the word.

Who was in it

  • Bill Walton Landscape architect whose 1964 column proposed the park; chaired the Parks and Recreation Commission's wash committee 1964–1973
  • John Erickson Engineer the council hired in October 1965 to analyze the Corps plan, whose alternative became the "Erickson Plan" 1965
  • STEP committees Citizen planners who opposed the concrete channel in 1964 and asked the council to adopt the Erickson Plan in 1969 1964–1970
  • B. L. "Bud" Tims Mayor through the Corps' change of mind and the 1973 bond mayor 1966–1974

By the numbers

About 170 ft wide

Corps channel, as planned

$7.25 million (1965)

Authorized by Congress

Failed, 1966

County channel bond

1985

Greenbelt finished

What the record doesn’t show

  • The Corps' own case for the concrete channel, in House Document 303 (88th Congress, 1964), was not read; the Corps side here speaks through the statute and one 1978 spokesman. · Happened off the books
  • The date and vote of the council's 1962 endorsement of the channel, and the years of Ordinance 181 and Resolution 348, which barred subdividing and building in the wash. The numbering points to 1964; the city's historic context gives only the months.
  • Who John Erickson was and the terms of his 1965 contract.
  • The canvass of the 1966 county bond election. The city's context says it failed three to one county-wide; a 1978 newspaper account says city officials, not voters, voted the idea down.
  • When the Corps accepted the greenbelt: the city's context says 1971, the Christian Science Monitor after the 1973 bond.
  • What the Yaqui families living in the wash thought of the flood plans and of their relocation; no statement from them survives from these years. · Happened off the books

The timeline

  1. 1959

    The Corps and the county Flood Control District begin public meetings on Indian Bend Wash flooding, by Joan Fudala's account.

  2. Early 1960s

    The Corps plans a concrete-lined channel down the wash (1961 in the city's historic context, 1963 in a 1978 newspaper account). The council endorses it in 1962, the context says.

  3. 1964

    Bill Walton's February 8 column proposes buying the wash for a park; STEP's committees oppose the concrete channel; the Corps' report goes to Congress as House Document 303 in May.

  4. 1965

    Walton joins the Parks and Recreation Commission in March and chairs its wash committee. Congress authorizes the concrete channel on October 27. The council hires engineer John Erickson to analyze the Corps plan.

  5. 1966

    The county Flood Control District's bond for the channel fails. The city acquires 55 acres on Miller Road that become Eldorado Park.

  6. 1967

    Eldorado Park opens, the first piece of a green wash.

  7. 1968

    The Corps receives money to study the Erickson alternative, the city's context says.

  8. 1969

    A STEP committee recommends 'That the Erickson Plan be adopted,' with a lake and park at the Arizona Canal and green strips the length of the wash.

  9. 1970–72

    The Labor Day flood of 1970 and the June 22, 1972 flood show what the wash can do.

  10. 1973

    Voters approve a greenbelt bond in April, seven to one by the city's context.

  11. 1985

    The Indian Bend Wash Greenbelt is declared complete.

Questions people actually ask

Who came up with the Indian Bend Wash Greenbelt?

The idea is usually traced to Bill Walton, a landscape architect who on February 8, 1964 wrote in the Scottsdale Daily Progress that the city should buy the wash and design the flood channel as a park. Citizen planning committees took it up, and the city's engineer, John Erickson, turned it into a design. The word 'greenbelt' does not appear in Walton's column.

Did voters reject the concrete channel?

A county bond to pay the local share of the channel failed in 1966; the city's historic context says it was a county Flood Control District election in March and lost three to one. Congress had already authorized the channel in 1965, so the vote stopped the money, not the plan.

When did the Army Corps of Engineers accept the greenbelt?

The city's context says the Corps studied the alternative from 1968 and agreed in 1971 that it would work. A 1978 Christian Science Monitor story says the Corps joined in once it was clear the city was going ahead, after the 1973 bond.

Was the greenbelt free of concrete?

Mostly. The plan the 1969 STEP committee endorsed kept a 170-foot flood channel easement inside the green strip and added an upstream reservoir to slow the water, with lakes, parks and golf courses on the banks.

Sources

Vernacular & LexiconThe WashThe GreenbeltChaparral Lake / EldoradoCharter city and home ruleThe Arizona CanalThe Salt River

Facts checked: October 22, 2026 • Written by • Every side is given in its own words from the public record; the site takes no side. Corrections are welcome.