Clean Water Act discharge permit · NPDES MTG589201

U.S.BUREAU OF RECLAMATION-FORT SMITH YELLOWTAIL FIELD OFFICE, Yellowtail, MT: NPDES MTG589201 discharge permit, effluent exceedances, inspections, penalties

Administratively continuedPermit status
MinorDischarger class
10Pollutants under a numeric limit
1Pollutants with an effluent exceedance

U.S.BUREAU OF RECLAMATION-FORT SMITH YELLOWTAIL FIELD OFFICE, held by U.S. Bureau of Reclamation-Fort Smith Yellowtail Field Office, holds NPDES permit MTG589201. EPA’s file records it issued April 25, 2016 and expiring December 31, 2020. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 15, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.

Identity

Facility as filed	U.S.BUREAU OF RECLAMATION-FORT SMITH YELLOWTAIL FIELD OFFICE
Permittee as filed	U.S. Bureau of Reclamation-Fort Smith Yellowtail Field Office
NPDES ID	MTG589201
Permit status	Administratively continued (past its expiration date and still in force until reissued)
Permit type	Coverage under a general permit
Discharger class	Minor discharger
Facility type	Federal facility
Issued	April 25, 2016
Expiration date	December 31, 2020
Address	Yellowtail, MT 59035
Subwatershed	Bighorn River-War Man Creek (HUC 100800150302)

Cited to the EPA ICIS-NPDES permit file (ECHO download).

Effluent limits and exceedances

10Pollutants on file
10Under a numeric limit
10With a violation of any kind
1With an effluent exceedance

An effluent exceedance is a discharge monitoring report value over the permit’s numeric limit (EPA’s violation code E90). A violation of any kind also counts a report not filed. Each row is EPA’s own count for that pollutant.

Pollutant or measure	Limits	Violations, any kind	Effluent exceedances	Latest exceedance	Largest exceedance, as filed
Solids, total suspended	2	3	1	June 30, 2023	30% over the limit
Temperature, water deg. centigrade	2	2	0
BOD, 5-day, 20 deg. C	2	2	0
pH	2	2	0
Nitrogen, ammonia total [as N]	2	2	0
Flow, total	2	2	0
Oil & Grease	1	1	0
Nitrogen, total [as N]	1	1	0
Phosphorus, total [as P]	1	1	0
Oil and grease visual	1	1	0

Cited to the EPA ICIS-NPDES limits and effluent violations files (ECHO download); up to 60 rows shown, most exceedances first.

Inspections, violations and enforcement

0Single-event violations

EPA’s single-event violation file, as loaded, holds no violation for NPDES MTG589201.

Velarion’s copy of EPA’s ICIS-NPDES files does not include the inspections, formal enforcement actions and informal enforcement actions files, so this page shows none of them. EPA’s free Detailed Facility Report on ECHO lists this permit’s inspections, enforcement actions and penalties.

Cited to the EPA ICIS-NPDES violation, inspection and enforcement files (ECHO download); up to 50 rows of each shown, newest first.

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EPA publishes a free Detailed Facility Report for every permit on ECHO: its compliance status quarter by quarter, its inspections, and its enforcement actions and penalties. EPA also sends free notices of new inspections and enforcement actions through ECHO Notify; enter NPDES ID MTG589201 there.

Nearby on the register

Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.

This public-records page covers NPDES permit MTG589201, held by U.S. Bureau of Reclamation-Fort Smith Yellowtail Field Office in Yellowtail, MT, with a status of administratively continued and a discharger class of 10 minor. The permit lists 1 pollutant under a numeric limit and 1 pollutant with an effluent exceedance, and it is associated with the Bighorn River-War Man Creek subwatershed (HUC 100800150302).