Clean Water Act discharge permit · NPDES MTR108273

YELLOWSTONE PARK, West Yellowstone, MT: NPDES MTR108273 discharge permit, effluent exceedances, inspections, penalties

EffectivePermit status
MinorDischarger class
0Pollutants under a numeric limit
0Pollutants with an effluent exceedance
0Inspections on file
0Formal enforcement actions

YELLOWSTONE PARK, held by Montana Department of Transportation, holds NPDES permit MTR108273, which discharges to Grayling Creek. EPA’s file records it issued March 11, 2020 and expiring December 31, 2022.

YELLOWSTONE PARK, West Yellowstone, Montana: Coverage under a general permit MTR108273, held by Montana Department of Transportation; Construction stormwater; Effective; issued March 11, 2020, term to December 31, 2022; discharges to GRAYLING CREEK.

Montana holds 2,848 Construction stormwater coverages of this permit type in EPA’s file; 1,304 were issued before MTR108273. Montana Department of Transportation holds 67 permits in Montana.

Other permits held by Montana Department of Transportation

MDT - MS4 STATEWIDE, Helena: MT0031844
HUSON - EAST, Frenchtown: MTR107134, issued January 12, 2018
RARUS/SILVER BOW CREEK STRUCTURES, Butte: MTR107185, issued March 13, 2018
ZIMMERMAN TRAIL, Billings: MTR107360, issued June 26, 2018
BAINVILLE SOUTH S327 FROM JCT W HWY #2 TO ND BORDER, Bainville: MTR107624, issued November 15, 2018
TOSTON STRUCTURES, Toston: MTR107728, issued March 14, 2019
JCT MT 217 SOUTH, GALATA, Galata: MTR107896, issued June 3, 2019
27TH STREET - 1ST AVE S TO AIRPORT, Billings: MTR107935, issued June 17, 2019
BAD ROUTE INTERCHANGE - NE, Fallon: MTR108054, issued August 16, 2019
LOHMAN - E & W, Chinook: MTR108138, issued November 1, 2019

Coverages issued nearest MTR108273

February 13, 2020: SILVERBROOK ESTATES PHASE 2B, Kalispell, MTR108235, held by LHC INC
February 18, 2020: BORDER CROSSING, Whitewater, MTR108222, held by TRANSCANADA KEYSTONE PIPELINE LP
February 18, 2020: SOUTH BEND 16-INCH CRUDE OIL PIPELINE, Wibaux, MTR108229, held by Bridger Pipeline LLC
February 18, 2020: JUNCTION S - 437 - N & S, Toston, MTR108236, held by Montana Department of Transportation
February 28, 2020: HELLGATE VILLAGE SUBDIVISION, Missoula, MTR108262, held by GRANT CREEK EXCAVATING LLC
March 11, 2020: BRIDGER BREWING, Three Forks, MTR108277, held by Bridger Brewing
March 26, 2020: CROW DAM SPILLWAY MODIFICATION AREA 3, Ronan, MTR10I02Q, held by Confederated Salish and Kootenai Tribes Safety of Dams Program
April 8, 2020: CROW DAM SPILLWAY MODIFICATION AREA 2, Ronan, MTR10I02T, held by Confederate Salish and Kootenai Tribes Safety of Dams Program
April 13, 2020: GLACIER PIPELINE REPLACEMENT MP 50-64 NEAR LAVINA, Lavina, MTR108312, held by PHILLIPS 66 PIPELINE LLC
April 14, 2020: SOUTH YELLOWSTONE RIVER VALVE, Laurel, MTR108329, held by WBI ENERGY TRANSMISSION INC

YELLOWSTONE PARK among its neighbors

EPA’s permit file holds 1 discharge permits in the Gallatin River-Snowslide Creek subwatershed (HUC 100200080103), MTR108273 among them. Its county holds 780, 1 of them major permits; MTR108273 is a minor permit.

What the register holds for YELLOWSTONE PARK: its NPDES ID, its permit type and status, its dates, its address in West Yellowstone, Montana, its receiving water. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES MTR108273.

Identity

Facility as filed	YELLOWSTONE PARK
Permittee as filed	Montana Department of Transportation
NPDES ID	MTR108273
Permit status	Effective
Permit type	Coverage under a general permit
Discharger class	Minor discharger
Facility type	Not a publicly owned treatment works
Program	Construction stormwater
Issued	March 11, 2020
Expiration date	December 31, 2022
Address	West Yellowstone, MT 59758
Receiving water	GRAYLING CREEK
Subwatershed	Gallatin River-Snowslide Creek (HUC 100200080103)

Effluent limits and exceedances

0Pollutants on file
0Under a numeric limit
0With a violation of any kind
0With an effluent exceedance

EPA’s limits and effluent violation files hold no pollutant row for NPDES MTR108273.

Inspections, violations and enforcement

0Single-event violations

EPA’s single-event violation file, as loaded, holds no violation for NPDES MTR108273.

Inspections

EPA’s inspection file holds no inspection for NPDES MTR108273.

Formal enforcement and penalties

0 formal actions, 0 of them with a penalty assessed. Federal and state penalties are separate figures from separate authorities and are shown as each was filed, never added together.

Informal enforcement

EPA’s informal enforcement file holds no action for NPDES MTR108273.

Watch this permit

One permit holder, $99/month. Watch the register for one permit holder and the places and receiving waters tied to its permits. Choose “One permit holder” and enter this permit’s NPDES ID, MTR108273.

Start the watch

How we handle your data → Privacy

Nearby on the register

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

YELLOWSTONE PARK is one of only 1 NPDES permit in the Gallatin River-Snowslide Creek subwatershed, the one included, and it sits among 600 storm water construction permits in Gallatin County. Of the 579 storm water construction permits in the county, this one included, 39.2% were issued earlier than this permit, and the permit records no pollutants under a numeric limit and no effluent exceedances.