City of Idaho Falls Requests Temporary Variance of Minimum Bypass Flow for Hydroelectric Project
Summary
The City of Idaho Falls has filed an application with FERC for a temporary variance of the minimum bypass flow requirement under Article 40 of the Idaho Falls Hydroelectric Project license (P-2842-047). The variance would allow cessation of required minimum flows to a bypassed reach at Upper Development Dam #1, with approximately 500 feet dewatered from August through December 2026 to facilitate cofferdam construction and inspection and repair of pelican gates. The public has until May 21, 2026 to submit comments, protests, or motions to intervene.
“The licensee is requesting a temporary variance of the required minimum flow to the bypassed reach at the Upper Development Dam #1 under Article 40 of the project license, for the construction of a cofferdam to facilitate in-kind maintenance activities on the pelican gates.”
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What changed
FERC has published a notice of application for a temporary variance of minimum bypass flow requirements for the Idaho Falls Hydroelectric Project on the Snake River in Bonneville County, Idaho. The application requests authorization to cease minimum flows to the bypassed reach and dewater approximately 500 feet from August through December 2026 for cofferdam construction and maintenance activities on pelican gates at Upper Development Dam #1. The variance is filed pursuant to Article 40 of the project license under the Federal Power Act.
Affected parties including federal, state, local, and tribal agencies with jurisdiction over environmental issues may file as cooperating agencies, though agencies that cooperate in environmental document preparation cannot intervene in the proceeding. Any person wishing to become a party to the proceeding must file a motion to intervene in accordance with FERC's Rules of Practice and Procedure. All comments, protests, or motions to intervene must be received by May 21, 2026 at 5:00 p.m. Eastern Time.
Archived snapshot
Apr 25, 2026GovPing captured this document from the original source. If the source has since changed or been removed, this is the text as it existed at that time.
Content
Take notice that the following hydroelectric application has been filed with the Commission and is available for public inspection:
a. Application Type: Temporary variance of minimum bypass flow.
b. Project No: 2842-047.
c. Date Filed: February 13, 2026.
d. Applicant: City of Idaho Falls, Idaho.
e. Name of Project: Idaho Falls Hydroelectric Project.
f. Location: The project is located on the Snake River in Bonneville County, Idaho, and occupies federal lands administered by the Bureau
of Land Management.
g. Filed Pursuant to: Federal Power Act, 16 U.S.C. 791a-825r.
h. Applicant Contact: Richard Malloy, 140 South Capital, Idaho Falls, Idaho 83402, rmalloy@ifpower.org.
i. FERC Contact: Brian Bartos, (202) 502-6679, brian.bartos@ferc.gov.
j. Cooperating agencies: With this notice, the Commission is inviting federal, state, local, and Tribal agencies with jurisdiction and/or special expertise
with respect to environmental issues affected by the proposal, that wish to cooperate in the preparation of any environmental
document, if applicable, to follow the instructions for filing such requests described in item k below. Cooperating agencies
should note the Commission's policy that agencies that cooperate in the preparation of any environmental document cannot also
intervene. See 94 FERC ¶ 61,076 (2001).
k. Deadline for filing comments, motions to intervene, and protests: May 21, 2026, 5:00 p.m. Eastern Time.
The Commission strongly encourages electronic filing. Please file comments, motions to intervene, and protests using the Commission's
eFiling system at http://www.ferc.gov/docs-filing/efiling.asp. Commenters can submit brief comments up to 6,000 characters, without prior registration, using the eComment system at http://www.ferc.gov/docs-filing/ecomment.asp. For assistance, please contact FERC Online Support at FERCOnlineSupport@ferc.gov, (866) 208-3676 (toll free), or (202) 502-8659 (TTY). In lieu of electronic filing, you may submit a paper copy. Submissions
sent via the U.S. Postal Service must be addressed to: Debbie-Anne A. Reese, Secretary, Federal Energy Regulatory Commission,
888 First Street NE, Room 1A, Washington, DC 20426. Submissions sent via any other carrier must be addressed to: Debbie-Anne
A. Reese, Secretary, Federal Energy Regulatory Commission, 12225 Wilkins Avenue, Rockville, MD 20852. The first page of any
filing should include the docket number P-2842-047. Comments emailed to Commission staff are not considered part of the Commission
record.
The Commission's Rules of Practice and Procedure require all intervenors filing documents with the Commission to serve a copy
of that document on each person whose name appears on the official service list for the project. Further, if an intervenor
files comments or documents with the Commission relating to the merits of an issue that may affect the responsibilities of
a particular resource agency, they must also serve a copy of the document on that resource agency.
l. Description of Request: The licensee is requesting a temporary variance of the required minimum flow to the bypassed reach at the Upper Development
Dam #1 under Article 40 of the project license, for the construction of a cofferdam to facilitate in-kind maintenance activities
on the pelican gates. This request is similar in its scope and timeframe to the licensee's prior request, filed December 2,
2024, supplemented on February 7, 2025, that it withdrew due to delays obtaining local permits and approvals.
The variance would entail cessation of the required minimum flows to the bypass reach, of which approximately 500 feet would
be dewatered from approximately August through December 2026. This variance should allow adequate time for cofferdam construction,
dewatering, and inspection and repair of the gates. The licensee has reinitiated consultation with the resource/permitting
agencies, Tribes, and stakeholders for the work, including consultation for cultural resources. The licensee consulted with
Idaho Fish and Game to survey the dewatered reach to capture and relocate any stranded fish and place gravel in the dewatered
bypass reach for fisheries spawning restoration and enhancement. The licensee would perform the proposed work using best management
practices to protect water quality and prevent erosion of project lands or sedimentation of project waters.
m. Locations of the Application: This filing may be viewed on the Commission's website at http://www.ferc.gov using the “eLibrary” link. Enter the docket number excluding the last three digits in the docket number field to access the
document. You may also register online at http://www.ferc.gov/docs-filing/esubscription.asp to be notified via email of new filings and issuances related to this or other pending projects. For assistance, call 1-866-208-3676
or email FERCOnlineSupport@ferc.gov, for TTY, call (202) 502-8659. Agencies may obtain copies of the application directly from the applicant.
n. Individuals desiring to be included on the Commission's mailing list should so indicate by writing to the Secretary of
the Commission.
o. Comments, Protests, or Motions to Intervene: Anyone may submit comments, a protest, or a motion to intervene in accordance with the requirements of Rules of Practice and
Procedure, 18 CFR 385.210, .211, .214, respectively. In determining the appropriate action to take, the Commission will consider
all protests or other comments filed, but only those who file a motion to intervene in accordance with the Commission's Rules
may become a party to the proceeding. Any comments, protests, or motions to intervene must be received on or before the specified
comment date for the particular application.
p. Filing and Service of Documents: Any filing must (1) bear in all capital letters the title “COMMENTS”, “PROTEST”, or “MOTION TO INTERVENE” as applicable; (2)
set forth in the heading the name of the applicant and the project number of the
application to which the filing responds; and (3) otherwise comply with the requirements of 18 CFR 385.2001 through 385.2005.
All comments, motions to intervene, or protests must set forth their evidentiary basis. Any filing made by an intervenor must
be accompanied by proof of service on all persons listed in the service list prepared by the Commission in this proceeding,
in accordance with 18 CFR 385.2010.
q. For public inquiries and assistance with making filings such as interventions, comments, or requests for rehearing, contact
the Office of Public Participation at (202) 502-6595 or OPP@ferc.gov.
(Authority: 18 CFR 2.1)
Dated: April 21, 2026. Debbie-Anne A. Reese, Secretary. [FR Doc. 2026-08089 Filed 4-23-26; 8:45 am] BILLING CODE 6717-01-P
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