South Hermiston hyperscale data center overlay (810-acre UGB expansion)
About 810 acres, zoned for farm use and partly railroad-owned, that Hermiston and Umatilla County moved into the city's growth boundary in 2025 with a hyperscale data center overlay. Also known as: Comprehensive Plan Map Amendment P-140-25, Zone Map Amendment Z-327-25, Hermiston Ordinance 2374, Umatilla County Ordinance 2025-11.
Who is behind it
The record, newest first
The Hermiston Herald reported Morgan projecting $500 million to $1 billion in lost revenue for local taxpayers and the state school fund from 2030 to 2050, tied to this annexed area, and said the city and partner agencies were weighing legal options. (Hermiston Herald, Nov. 4, 2026)
OPB reported Mark Morgan, whom it called city manager, as saying Amazon dropped plans for several new Hermiston data centers after news of the state permit pause, and estimating about $550 million in lost future local fees; the report does not say which land was involved. (OPB, Oct. 22, 2026)
Assistant City Manager Mark Morgan told OPB no data center was on the land yet and guessed at site work on some of it within a couple of years. (OPB (Think Out Loud), Aug. 21, 2026)
The Hermiston Herald reported that the expansion and annexation became official in January. (Hermiston Herald, Sept. 29, 2026)
The county Board of Commissioners held its hearing and co-adopted the change through Ordinance 2025-11, moving the land from Exclusive Farm Use to city Heavy Industrial with a Hyperscale Data Center overlay. (Umatilla County, Oct. 15, 2025; Umatilla County Board of Commissioners, Oct. 15, 2025)
The county planning commission recommended co-adoption 6-0 with one abstention. (Umatilla County Planning Commission, Sept. 25, 2025)
Hermiston's council adopted the expansion and annexation 7-1, after a 7-1 first reading following the Aug. 25 hearing; OPB reported no one spoke against it at the hearing and the one dissent cited local water supply. (City of Hermiston, undated; Hermiston Herald, Sept. 8, 2025; OPB, Sept. 10, 2025)
Umatilla County commissioners waived $2,000 of the $4,000 fee for the application, 2-1. (Umatilla County Board of Commissioners, Sept. 3, 2025)
Hermiston's planning commission unanimously recommended Ordinance 2374 (growth boundary) and Ordinance 2375 (annexation). (City of Hermiston Planning Commission, Aug. 13, 2025)
Hermiston adopted an economic opportunities analysis finding a need for 1,210 acres of data center sites. (Oregon Department of Land Conservation and Development, Feb. 24, 2026)
Conflicts and open questions
- No company is attached in the records opened. OPB said in September 2025 that no company was attached to the land; in August 2026 its introduction said the land was annexed to AWS.
- August 2025 planning materials describe five suitable sites in three tracts with 643 suitable acres; their acreage figures are not fully consistent.
- County records list the owners as Union Pacific Railroad, JB Land LLC and Umatilla Basin Properties; city materials say the last is a subsidiary of Umatilla Electric Cooperative. Staff said no property was being purchased at that stage.
- The county ordinance copy reviewed does not show a vote count.
- The map point is approximate, within the described boundaries.
The full record
- Status note
- The land is annexed and zoned for hyperscale data centers; nothing was built as of August 2026, and no site plan was found.
- Power note
- No power figure in the records opened.
- Evidence
- Primary public records
- Size class
- 50 MW or more (tracker scope)